* { margin: 0; padding: 0; box-sizing: border-box; }

/* === Theme Variables === */
:root {
    --bg: #e8eaed;
    --bg-grad: linear-gradient(160deg, #dfe5ed 0%, #e6e4e0 50%, #e0e6eb 100%);
    --bar-bg: rgba(255,255,255,0.66);
    --bar-border: rgba(0,0,0,0.06);
    --card: rgba(255,255,255,0.62);
    --card-border: rgba(0,0,0,0.07);
    --card-shadow: 0 4px 24px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
    --inset-shadow: inset 0 2px 4px rgba(0,0,0,0.04);
    --text: #1e1e1e;
    --text-secondary: #4a4a4a;
    --text-muted: #8a8a8a;
    --input-bg: rgba(255,255,255,0.52);
    --input-border: rgba(0,0,0,0.1);
    --input-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
    --code-bg: rgba(255,255,255,0.38);
    --code-text: #333;
    --accent: #2f8fa3;
    --accent-hover: #26788a;
    --dropdown-bg: rgba(255,255,255,0.94);
    --dropdown-border: rgba(0,0,0,0.08);
    --dropdown-hover: rgba(0,0,0,0.04);
    --scroll-thumb: #c0c0c0;
    --divider: rgba(0,0,0,0.06);
    --btn-bg: rgba(255,255,255,0.54);
    --btn-border: rgba(0,0,0,0.08);
    --top-action-width: 130px;
    --copy-accent: #357fbd;
    --jar-accent: #2f9b73;
    --local-accent: #c0792a;
    --home-accent: #5f6f82;
    --footer-text: #888;
    --blur: 0px;
}

[data-theme="dark"] {
    --bg: #171b22;
    --bg-grad: linear-gradient(160deg, #151920 0%, #1c2028 50%, #171d24 100%);
    --bar-bg: rgba(32,36,45,0.78);
    --bar-border: rgba(148,163,184,0.12);
    --card: rgba(35,39,49,0.82);
    --card-border: rgba(148,163,184,0.13);
    --card-shadow: 0 4px 24px rgba(0,0,0,0.3), 0 1px 4px rgba(0,0,0,0.15);
    --inset-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
    --text: #e4e6ea;
    --text-secondary: #a0a4ab;
    --text-muted: #838b98;
    --input-bg: rgba(18,22,29,0.64);
    --input-border: rgba(148,163,184,0.13);
    --input-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
    --code-bg: rgba(18,22,29,0.68);
    --code-text: #bcc1c9;
    --accent: #65b6c8;
    --accent-hover: #54a2b4;
    --dropdown-bg: rgba(48,51,58,0.96);
    --dropdown-border: rgba(255,255,255,0.06);
    --dropdown-hover: rgba(255,255,255,0.05);
    --scroll-thumb: #4a4e56;
    --divider: rgba(148,163,184,0.12);
    --btn-bg: rgba(50,53,60,0.58);
    --btn-border: rgba(148,163,184,0.13);
    --top-action-width: 128px;
    --copy-accent: #5b9fd4;
    --jar-accent: #4dba8a;
    --local-accent: #d4943e;
    --home-accent: #8498aa;
    --footer-text: #5a5e66;
}

body.app-decrypt {
    --mode-accent: var(--accent);
    --mode-accent-2: #5bb8c9;
    --mode-soft: rgba(74,144,164,0.10);
    --mode-border: rgba(74,144,164,0.24);
    --mode-shadow: rgba(74,144,164,0.25);
}

body.app-encrypt {
    --mode-accent: var(--accent);
    --mode-accent-2: #5bb8c9;
    --mode-soft: rgba(74,144,164,0.10);
    --mode-border: rgba(74,144,164,0.24);
    --mode-shadow: rgba(74,144,164,0.25);
}

[data-theme="dark"] .content-toolbar {
    background: var(--bar-bg);
    box-shadow: 0 8px 18px rgba(0,0,0,0.26);
}

[data-theme="dark"] .btn-home {
    color: var(--text-secondary);
    background: rgba(50,53,60,0.7);
}

body {
    background-color: var(--bg);
    background-image:
        linear-gradient(rgba(74,144,164,0.10) 1px, transparent 1px),
        linear-gradient(90deg, rgba(74,144,164,0.10) 1px, transparent 1px),
        var(--bg-grad, none);
    background-size: 32px 32px, 32px 32px, auto;
    background-position: center;
    background-attachment: scroll;
    color: var(--text);
    font-family: -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100dvh;
    overflow-x: hidden;
    transition: background 0.35s, color 0.35s;
}
body::after {
    display: none;
}
/* --- View Transition: circle expand from button --- */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}
::view-transition-new(root) {
    clip-path: circle(0px at var(--vt-x, 50%) var(--vt-y, 50%));
    animation: vtCircleIn 0.35s ease-out forwards;
}
::view-transition-old(root) {
    z-index: 1;
}
::view-transition-new(root) {
    z-index: 9999;
}
@keyframes vtCircleIn {
    to { clip-path: circle(var(--vt-r, 100vmax) at var(--vt-x, 50%) var(--vt-y, 50%)); }
}

/* --- Floating glow orbs background --- */
.glow-bg {
    display: none;
}
.glow {
    position: absolute;
    border-radius: 50%;
    filter: none;
    will-change: auto;
}
.g1 {
    width: 500px; height: 500px;
    background: rgba(74,144,164,0.22);
    top: -5%; left: -5%;
    animation: none;
}
.g2 {
    width: 420px; height: 420px;
    background: rgba(57,154,135,0.14);
    top: 40%; right: -8%;
    animation: none;
}
.g3 {
    width: 350px; height: 350px;
    background: rgba(111,132,150,0.12);
    bottom: -5%; left: 30%;
    animation: none;
}

[data-theme="dark"] .g1 { background: rgba(74,144,164,0.15); }
[data-theme="dark"] .g2 { background: rgba(57,154,135,0.10); }
[data-theme="dark"] .g3 { background: rgba(111,132,150,0.10); }

@keyframes glowDrift1 {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(60px, 40px) scale(1.15); }
}
@keyframes glowDrift2 {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-50px, -30px) scale(1.1); }
}
@keyframes glowDrift3 {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, -50px) scale(1.2); }
}

/* --- Page Layout --- */
.page-wrapper {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100dvh;
    padding: clamp(12px, 2.5dvh, 24px) clamp(12px, 2.2vw, 20px);
}

/* --- Top Bar --- */
.top-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    max-width: 920px;
    padding: clamp(10px, 1.6dvh, 14px) 24px;
    margin-bottom: 0;
    background: var(--bar-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid var(--card-border);
    border-bottom: none;
    border-radius: 14px 14px 0 0;
    z-index: 20;
    box-shadow: 0 -1px 0 rgba(255,255,255,0.06) inset;
    transition: background 0.3s, border-color 0.3s;
}

.top-bar-center {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.top-bar-title {
    font-size: 18px;
    font-weight: 750;
    color: var(--text);
    letter-spacing: 0;
    white-space: nowrap;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.title-accent {
    background: linear-gradient(135deg, var(--accent), #2f9b73);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    padding: 0 2px;
    margin: 0 1px;
}

.top-bar-sub {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.2;
}

.top-bar-qr {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.top-bar-qr img {
    display: block;
    width: clamp(40px, 5dvh, 48px);
    height: clamp(40px, 5dvh, 48px);
    max-width: 48px;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: transform 0.15s, box-shadow 0.15s;
}

.top-bar-qr:hover img {
    transform: scale(1.08);
    box-shadow: 0 3px 12px rgba(0,0,0,0.12);
}

/* --- Top Bar Actions --- */
.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.top-bar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 9px;
    border: 1px solid var(--btn-border);
    background: var(--btn-bg);
    color: var(--text-muted);
    text-decoration: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    cursor: pointer;
}

.top-bar-btn:hover {
    background: var(--dropdown-hover);
    color: var(--accent);
    border-color: var(--accent);
}

/* --- Theme Toggle --- */
.theme-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--btn-border);
    border-radius: 9px;
    background: var(--btn-bg);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    padding: 0;
}

.theme-toggle:hover {
    background: var(--dropdown-hover);
    border-color: var(--accent);
}

.top-bar-btn:focus-visible,
.theme-toggle:focus-visible,
.decrypt-button:focus-visible,
.toolbar-toggle:focus-visible,
.tb-btn:focus-visible,
.view-btn:focus-visible,
.search-nav:focus-visible,
.search-close:focus-visible,
.sib-copy-btn:focus-visible,
.action-button:focus-visible {
    outline: 3px solid rgba(74,144,164,0.24);
    outline-offset: 2px;
}

.icon-sun { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* --- Container (Glass Card) --- */
.container {
    background: var(--card);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid var(--card-border);
    border-top: 1px solid var(--divider);
    padding: clamp(14px, 2.4dvh, 22px) clamp(18px, 3vw, 28px) clamp(14px, 2.6dvh, 24px);
    border-radius: 0 0 14px 14px;
    width: 100%;
    max-width: 920px;
    display: flex;
    flex-direction: column;
    gap: clamp(10px, 1.4dvh, 14px);
    box-shadow: var(--card-shadow);
    transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

/* --- Top Section --- */
.top-section {
    position: relative;
    z-index: 5;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) var(--top-action-width);
    column-gap: 12px;
    row-gap: 6px;
    align-items: start;
    justify-content: start;
}

body.app-encrypt .top-section {
    grid-template-columns: auto 0px var(--top-action-width);
}

.mode-switch {
    position: relative;
    grid-column: 1;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    min-height: 44px;
    border: 1px solid var(--card-border);
    border-radius: 9px;
    background: var(--input-bg);
    flex-shrink: 0;
    align-self: start;
    margin-top: 23px;
    overflow: hidden;
}

.mode-switch::before {
    content: '';
    position: absolute;
    top: 3px;
    bottom: 3px;
    left: 3px;
    width: calc((100% - 8px) / 2);
    border-radius: 6px;
    background: var(--mode-accent, var(--accent));
    box-shadow: 0 2px 8px var(--mode-shadow, rgba(74,144,164,0.22));
    transform: translateX(0);
    transition: transform 0.26s cubic-bezier(.2,.8,.2,1), background 0.2s, box-shadow 0.2s;
    will-change: transform;
}

body.app-encrypt .mode-switch::before {
    transform: translateX(calc(100% + 2px));
}

.mode-btn {
    position: relative;
    z-index: 1;
    min-height: 36px;
    padding: 0 14px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    font-weight: 650;
    font-family: inherit;
    transition: color 0.18s ease-out;
    touch-action: manipulation;
}

.mode-btn.active {
    background: transparent;
    color: #fff;
    box-shadow: none;
}

.mode-btn:focus-visible {
    outline: 2px solid rgba(74,144,164,0.35);
    outline-offset: 2px;
}

.input-container {
    position: relative;
    grid-column: 2;
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    overflow: hidden;
    max-height: 92px;
    transition: max-height 0.3s ease-out, opacity 0.24s ease-out, transform 0.3s cubic-bezier(.2,.8,.2,1);
}

body.app-decrypt .input-container {
    overflow: visible;
}

body.app-encrypt .input-container {
    max-height: 0;
    opacity: 0;
    transform: translateX(-26px);
    pointer-events: none;
}

body.app-encrypt .suggestions-dropdown {
    display: none !important;
}

body.mode-layout-moving .input-container {
    will-change: transform, opacity, max-height;
}

.input-label {
    font-size: 13px;
    font-weight: 650;
    color: var(--text);
    line-height: 1.2;
}

.input-hint {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.35;
}

.interface-input-wrap {
    position: relative;
    width: 100%;
}

.interface-input-wrap::after {
    content: '';
    position: absolute;
    right: 14px;
    top: 50%;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid var(--text-muted);
    border-bottom: 1.5px solid var(--text-muted);
    transform: translateY(-64%) rotate(45deg);
    pointer-events: none;
    opacity: 0.75;
    transition: border-color 0.16s, opacity 0.16s;
}

.interface-input-wrap:focus-within::after {
    border-color: var(--mode-accent, var(--accent));
    opacity: 1;
}

.input-field {
    width: 100%;
    min-height: 44px;
    padding: 11px 34px 11px 14px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    color: var(--text);
    border-radius: 9px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    box-shadow: var(--input-shadow), 0 1px 3px rgba(0,0,0,0.04);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.3s;
}

.input-field::placeholder { color: var(--text-muted); }

.input-field:focus {
    border-color: var(--mode-accent, var(--accent));
    box-shadow: 0 0 0 3px var(--mode-soft, rgba(74,144,164,0.1)), var(--input-shadow);
}

.decrypt-button {
    grid-column: 3;
    align-self: start;
    margin-top: 23px;
    min-height: 44px;
    width: var(--top-action-width);
    min-width: 0;
    padding: 11px 18px;
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--mode-accent, var(--accent)) 0%, var(--mode-accent-2, #5bb8c9) 100%);
    color: #fff;
    border-radius: 9px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    white-space: nowrap;
    box-shadow: 0 2px 8px var(--mode-shadow, rgba(74,144,164,0.25)), inset 0 1px 0 rgba(255,255,255,0.15);
    transition: background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.18s ease-out, opacity 0.18s ease-out;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.15);
    letter-spacing: 0;
}

.decrypt-button.mode-motion {
    transition: transform 0.32s cubic-bezier(.2,.8,.2,1), box-shadow 0.2s, opacity 0.18s ease-out;
}

.decrypt-button:hover:not(:disabled) { box-shadow: 0 4px 16px var(--mode-shadow, rgba(74,144,164,0.35)), inset 0 1px 0 rgba(255,255,255,0.2); transform: translateY(-1px); }
.decrypt-button:active:not(:disabled) { transform: translateY(0); box-shadow: 0 1px 4px rgba(74,144,164,0.2), inset 0 2px 4px rgba(0,0,0,0.1); }
.decrypt-button:disabled:not(.loading) {
    cursor: not-allowed;
    transform: none;
    background: var(--mode-soft, var(--input-bg));
    border-color: var(--mode-border, var(--card-border));
    color: var(--mode-accent, var(--accent));
    box-shadow: none;
    filter: none;
    opacity: 0.72;
    text-shadow: none;
}

/* --- Content --- */
.main-section {
    position: relative;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.content-shell {
    position: relative;
    min-width: 0;
    contain: layout paint;
}

.content-guide {
    display: flex;
    align-items: center;
    min-height: 26px;
    padding: 5px 10px;
    border: 1px solid var(--mode-border, var(--card-border));
    border-radius: 8px;
    background: var(--mode-soft, var(--input-bg));
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.45;
}

body.app-encrypt .content-guide {
    border-color: rgba(47,155,115,0.22);
    background: rgba(47,155,115,0.08);
}

[data-theme="dark"] .content-guide {
    background: rgba(101,182,200,0.08);
    border-color: rgba(101,182,200,0.18);
    color: #aeb7c5;
}

.content-area {
    width: 100%;
    height: clamp(260px, 46dvh, 480px);
    min-height: 220px;
    background: var(--code-bg);
    border: 1px solid var(--card-border);
    border-radius: 9px;
    padding: 14px 14px 58px;
    font-size: 12.5px;
    line-height: 1.58;
    color: var(--code-text);
    resize: vertical;
    overflow: auto;
    white-space: pre;
    word-wrap: normal;
    font-family: 'Cascadia Mono', Consolas, 'Courier New', monospace;
    outline: none;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.04);
    scroll-padding-bottom: 58px;
    transition: border-color 0.2s, background 0.3s, color 0.3s;
}

.content-area::placeholder { color: var(--text-muted); }
.content-area:focus { border-color: var(--mode-accent, var(--accent)); }

.content-area::-webkit-scrollbar { width: 6px; height: 6px; }
.content-area::-webkit-scrollbar-track { background: transparent; }
.content-area::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 3px; }

.encrypt-options {
    display: none;
    align-items: center;
    gap: 10px;
}

body.app-encrypt .encrypt-options {
    display: flex;
}

.encrypt-type-switch {
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background: var(--input-bg);
}

.encrypt-type-btn,
.cover-upload {
    min-height: 36px;
    border: 0;
    border-radius: 6px;
    padding: 0 13px;
    font: inherit;
    font-size: 13px;
    font-weight: 650;
    color: var(--text-muted);
    background: transparent;
    cursor: pointer;
}

.encrypt-type-btn.active,
.cover-upload {
    color: #fff;
    background: var(--mode-accent, var(--accent));
}

.cover-upload {
    display: none;
    align-items: center;
    max-width: min(320px, 100%);
}

body.encrypt-image-mode .cover-upload {
    display: inline-flex;
}

.cover-upload input {
    display: none;
}

#cover-upload-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- Content Toolbar --- */
.content-toolbar {
    display: none;
    position: absolute;
    top: 10px;
    left: 8px;
    z-index: 12;
    flex-wrap: nowrap;
    align-items: center;
    gap: 4px;
    padding: 4px;
    background: var(--bar-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: 0 8px 18px rgba(0,0,0,0.10);
    transition: background 0.2s, border-color 0.2s, opacity 0.18s, transform 0.18s;
}
.content-toolbar.active { display: flex; }
.content-toolbar.toolbar-collapsed .toolbar-left {
    display: none;
}

.toolbar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    min-width: 30px;
    min-height: 30px;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s, transform 0.15s;
}
.toolbar-toggle:hover {
    background: var(--dropdown-hover);
    color: var(--mode-accent, var(--accent));
}
.toolbar-toggle svg {
    transition: transform 0.18s cubic-bezier(.2,.8,.2,1);
}
.content-toolbar.toolbar-collapsed .toolbar-toggle svg {
    transform: rotate(180deg);
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: none;
    min-width: 0;
    flex-wrap: nowrap;
}

.view-switch {
    display: inline-flex;
    align-items: center;
    padding: 0;
    gap: 3px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    flex-shrink: 0;
}

.view-btn {
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    font-family: inherit;
    line-height: 1;
    width: 32px;
    min-width: 32px;
    min-height: 32px;
    padding: 0;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
}

.view-btn.active {
    background: var(--mode-accent, var(--accent));
    color: #fff;
}

.view-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.tb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 0;
    width: 32px;
    min-width: 32px;
    min-height: 32px;
    border: 1px solid var(--btn-border);
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.view-btn span,
.tb-btn span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}
.tb-btn:hover {
    border-color: var(--mode-border, var(--accent));
    color: var(--mode-accent, var(--accent));
    background: var(--mode-soft, var(--input-bg));
}
.tb-btn.active {
    background: var(--mode-accent, var(--accent));
    color: #fff;
    border-color: transparent;
    box-shadow: none;
}
.tb-btn svg { flex-shrink: 0; opacity: 0.8; }
.tb-btn:hover svg,
.tb-btn.active svg { opacity: 1; }

.tb-sep {
    width: 1px;
    height: 18px;
    background: var(--divider);
    margin: 0 4px;
    flex-shrink: 0;
}

.toolbar-stats {
    display: none;
    width: 100%;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'Cascadia Mono', Consolas, monospace;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    padding: 4px 2px 2px;
    border-top: 1px solid var(--divider);
    margin-top: 2px;
}
.toolbar-stats:empty { display: none; border-top: none; margin-top: 0; padding: 0; }

.stat-chip {
    display: inline-flex;
    align-items: center;
    min-height: 22px;
    padding: 2px 7px;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    background: var(--input-bg);
    color: var(--text-muted);
    line-height: 1;
}

.toolbar-stats .mode-note {
    color: var(--mode-accent, var(--accent));
    border-color: var(--mode-border, var(--card-border));
    background: var(--mode-soft, var(--input-bg));
}

/* Search bar */
.search-bar {
    display: none;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 0;
    box-shadow: none;
    transition: background 0.3s, border-color 0.3s;
}
.search-bar.active { display: flex; }

.search-input {
    flex: 1;
    min-width: 0;
    min-height: 36px;
    padding: 5px 10px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text);
    font-size: 12px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}
.search-input:focus { border-color: var(--accent); }
.search-input::placeholder { color: var(--text-muted); }

.search-count {
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'Cascadia Mono', Consolas, monospace;
    white-space: nowrap;
    min-width: 40px;
    text-align: center;
}

.search-nav {
    padding: 3px 8px;
    min-width: 32px;
    min-height: 32px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background: var(--btn-bg);
    color: var(--text-secondary);
    font-size: 10px;
    cursor: pointer;
    transition: all 0.15s;
}
.search-nav:hover { background: var(--dropdown-hover); color: var(--text); }

.search-close {
    padding: 3px 8px;
    min-width: 32px;
    min-height: 32px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.15s;
}
.search-close:hover { color: var(--text); }

/* Search highlight */
.json-view mark {
    background: rgba(255,213,79,0.4);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}
.json-view mark.current {
    background: rgba(255,152,0,0.6);
    outline: 1px solid rgba(255,152,0,0.8);
}

/* --- Search Info Bar (inline, second row of search-bar) --- */
.search-info-bar {
    display: none;
    width: 100%;
    align-items: center;
    gap: 8px;
    padding: 5px 2px 2px;
    border-top: 1px solid var(--divider);
    margin-top: 2px;
}
.search-info-bar.active { display: flex; }
.search-info-bar.copied .sib-copy-btn { background: #34c759; }

.sib-label {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    color: var(--text-secondary);
}

.sib-copy-btn {
    flex-shrink: 0;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    color: #fff;
    padding: 4px 14px;
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    min-height: 30px;
    transition: background 0.15s, opacity 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.sib-copy-btn:hover { opacity: 0.88; }
.sib-copy-btn:active { opacity: 0.75; }

@media (max-width: 640px) {
    .content-toolbar { top: 8px; left: 6px; padding: 3px; gap: 3px; border-radius: 7px; }
    .toolbar-left { width: auto; flex: none; gap: 3px; }
    .view-switch { width: auto; flex: none; }
    .toolbar-toggle,
    .view-btn,
    .tb-btn { flex: none; width: 30px; min-width: 30px; min-height: 30px; padding: 0; border-radius: 6px; }
    .toolbar-toggle svg,
    .view-btn svg,
    .tb-btn svg { width: 14px; height: 14px; }
    .tb-sep { display: none; }
    .toolbar-stats { display: none; }
    .search-bar { padding: 5px 8px; }
    .search-input { flex: 1 1 100%; order: -1; min-height: 42px; }
    .search-count { margin-left: auto; }
    .search-nav,
    .search-close { min-width: 40px; min-height: 40px; }
    .sib-copy-btn { min-height: 36px; padding: 5px 16px; font-size: 13px; }
    .main-section { gap: 6px; }
    .content-guide { min-height: 32px; padding: 7px 10px; font-size: 11px; }
    .json-view { flex-grow: 1; height: auto; min-height: 0; }
    .msg-overlay { flex-grow: 1; height: auto; min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}

/* --- Preview State Panel --- */
.msg-overlay {
    display: none;
    width: 100%;
    height: clamp(260px, 46dvh, 480px);
    min-height: 220px;
    background: var(--code-bg);
    border: 1px solid var(--card-border);
    border-radius: 0 0 10px 10px;
    padding: 24px;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.04);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    transition: background 0.3s, border-color 0.3s;
}
.msg-overlay.active { display: flex; }
.msg-overlay.loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 2px;
    width: 42%;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.85;
    animation: stateSweep 1.6s ease-in-out infinite;
}

.msg-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    position: relative;
    margin-bottom: 4px;
}
.msg-icon.error   { color: #d93b32; background: rgba(255,59,48,0.09); }
.msg-icon.warn    { color: #b86b00; background: rgba(255,149,0,0.10); }
.msg-icon.info    { color: var(--accent); background: rgba(74,144,164,0.09); }
.msg-icon.loading {
    color: var(--accent);
    background: rgba(74,144,164,0.09);
}
.msg-icon.loading::before,
.msg-icon.loading::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: currentColor;
}
.msg-icon.loading::before {
    width: 6px;
    height: 6px;
    animation: stateDot 1.1s ease-in-out infinite;
}
.msg-icon.loading::after {
    width: 6px;
    height: 6px;
    opacity: 0.28;
    transform: translateX(10px);
    animation: stateDotSoft 1.1s ease-in-out infinite;
}

.msg-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.35;
}
.msg-detail {
    font-size: 13px;
    color: var(--text-secondary);
    max-width: 500px;
    line-height: 1.55;
}
.msg-suggestion {
    font-size: 12px;
    color: var(--text-muted);
    max-width: 500px;
    line-height: 1.5;
    margin-top: 2px;
}
.msg-suggestion:empty { display: none; }

.empty-guides {
    display: none;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

.msg-overlay.info .empty-guides {
    display: flex;
}

.empty-guides span {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 5px 10px;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    background: var(--input-bg);
    color: var(--text-secondary);
    font-size: 12px;
}

.msg-url {
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'Cascadia Mono', Consolas, monospace;
    word-break: break-all;
    max-width: 560px;
    margin-top: 4px;
    opacity: 0.82;
}
.msg-url:empty { display: none; }

@keyframes stateDot {
    0%, 100% { transform: translateX(-7px); opacity: 0.35; }
    50% { transform: translateX(0); opacity: 1; }
}

@keyframes stateDotSoft {
    0%, 100% { transform: translateX(7px); opacity: 0.35; }
    50% { transform: translateX(0); opacity: 0.85; }
}

@keyframes stateSweep {
    0% { transform: translateX(-120%); }
    100% { transform: translateX(240%); }
}

[data-theme="dark"] .msg-overlay {
    background: var(--code-bg);
}

@media (max-width: 640px) {
    .msg-overlay { height: 300px; padding: 18px; }
    .msg-title { font-size: 16px; }
    .msg-detail, .msg-suggestion { max-width: 100%; }
}

/* --- Progress Panel --- */
.progress-panel {
    display: none;
    flex-direction: column;
    width: 100%;
    height: clamp(260px, 46dvh, 480px);
    min-height: 220px;
    background: var(--code-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--inset-shadow);
    transition: background 0.3s, border-color 0.3s;
}
.progress-panel.active { display: flex; }

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-shrink: 0;
}
.progress-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0;
}
.progress-pct {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    font-family: 'Cascadia Mono', Consolas, monospace;
    background: rgba(74,144,164,0.1);
    padding: 3px 10px;
    border-radius: 10px;
    line-height: 1;
}

.progress-track {
    width: 100%;
    height: 6px;
    background: var(--input-bg);
    border-radius: 3px;
    overflow: hidden;
    flex-shrink: 0;
}
.progress-fill {
    height: 100%;
    width: 0%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), #5ec4d4);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 8px rgba(74,144,164,0.25);
}
.progress-fill.success { background: linear-gradient(90deg, #34c759, #30d158); box-shadow: 0 0 8px rgba(52,199,89,0.25); }
.progress-fill.error   { background: linear-gradient(90deg, #ff3b30, #ff6b6b); box-shadow: 0 0 8px rgba(255,59,48,0.25); }

.progress-status {
    font-size: 12px;
    color: var(--text-muted);
    margin: 8px 0 14px;
    min-height: 16px;
    font-family: 'Cascadia Mono', Consolas, monospace;
    flex-shrink: 0;
    transition: color 0.2s;
}

.progress-steps {
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex: 1;
    overflow-y: auto;
    margin: 0 -6px;
    padding: 0 6px;
}

@keyframes stepIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: 8px;
    background: transparent;
    transition: background 0.15s;
    animation: stepIn 0.25s ease-out both;
}

/* Phase heading */
.step-item.heading {
    font-weight: 700;
    color: var(--text);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0;
    padding: 14px 12px 6px;
    margin-top: 4px;
    gap: 8px;
    position: relative;
}
.step-item.heading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 12px;
    right: 12px;
    height: 1px;
    background: var(--divider);
}
.step-item.heading:first-child { margin-top: 0; padding-top: 6px; }
.step-item.heading:first-child::before { display: none; }

/* Compact mode for file download steps */
.step-item.compact {
    padding: 4px 10px;
    font-size: 12px;
    line-height: 1.4;
    gap: 8px;
    animation-duration: 0.15s;
}
.step-item.compact .step-icon {
    width: 16px;
    height: 16px;
    font-size: 9px;
}
.step-item.compact .step-text { font-family: 'Cascadia Mono', Consolas, monospace; }
.step-item.compact .step-label { font-family: inherit; }

.step-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    margin-top: 1px;
}
.step-icon.info    { background: rgba(74,144,164,0.12); color: var(--accent); }
.step-icon.success { background: rgba(52,199,89,0.12); color: #34c759; }
.step-icon.error   { background: rgba(255,59,48,0.12); color: #ff3b30; }
.step-icon.warn    { background: rgba(255,149,0,0.12); color: #ff9500; }
.step-icon.skip    { background: rgba(142,142,147,0.08); color: #8e8e93; }
.step-icon.loading { background: rgba(74,144,164,0.12); color: var(--accent); animation: spin 0.8s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

.step-text { flex: 1; word-break: break-all; }
.step-text .step-label { color: var(--text-muted); font-size: 12px; }
.step-text .step-size {
    color: var(--accent);
    font-size: 11px;
    font-family: 'Cascadia Mono', Consolas, monospace;
    background: rgba(74,144,164,0.08);
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: 4px;
}

.step-item.done { background: rgba(52,199,89,0.04); }
.step-item.fail { background: rgba(255,59,48,0.04); }

.progress-summary {
    margin-top: 10px;
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 13px;
    line-height: 1.7;
}
.progress-summary.success { background: rgba(52,199,89,0.07); color: #34c759; border: 1px solid rgba(52,199,89,0.12); }
.progress-summary.error   { background: rgba(255,59,48,0.07); color: #ff3b30; border: 1px solid rgba(255,59,48,0.12); }
.progress-summary.warn    { background: rgba(255,149,0,0.07); color: #ff9500; border: 1px solid rgba(255,149,0,0.12); }
.progress-summary .summary-title { font-weight: 700; display: block; margin-bottom: 4px; }
.progress-summary .summary-detail { color: var(--text-secondary); font-size: 12px; white-space: pre-line; }

.progress-steps::-webkit-scrollbar { width: 5px; }
.progress-steps::-webkit-scrollbar-track { background: transparent; }
.progress-steps::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 3px; }

@media (max-width: 640px) {
    .progress-panel { height: 300px; padding: 16px; }
    .step-item.compact { padding: 3px 8px; font-size: 11px; }
    .step-item.compact .step-icon { width: 14px; height: 14px; font-size: 8px; }
}

/* --- Bottom Buttons --- */
.bottom-section {
    position: absolute;
    left: 12px;
    bottom: 12px;
    z-index: 18;
    display: flex;
    align-items: center;
    gap: 6px;
    width: auto;
    max-width: calc(100% - 24px);
    margin-top: 0;
    padding: 4px;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: rgba(255,255,255,0.46);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    opacity: 0.62;
    transition: opacity 0.16s, background 0.2s, border-color 0.2s;
}

[data-theme="dark"] .bottom-section {
    background: rgba(28,32,40,0.58);
    box-shadow: 0 8px 22px rgba(0,0,0,0.24);
}

.main-section:hover .bottom-section,
.main-section:focus-within .bottom-section,
.bottom-section:hover {
    opacity: 0.96;
}

.bottom-section > button,
.bottom-section > a {
    min-width: 0;
}

.action-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    padding: 7px 10px;
    --action-color: var(--text-secondary);
    --action-soft: var(--btn-bg);
    --action-border: var(--btn-border);
    --action-ready-bg: var(--action-color);
    --action-ready-border: var(--action-color);
    --action-shadow: rgba(0,0,0,0.12);
    --action-disabled-text: var(--text-muted);
    border: 1px solid var(--action-border);
    border-radius: 8px;
    background: var(--action-soft);
    color: var(--action-color);
    cursor: pointer;
    font-size: 12px;
    font-weight: 650;
    font-family: inherit;
    text-decoration: none;
    white-space: nowrap;
    width: auto;
    box-sizing: border-box;
    overflow: hidden;
    transform: translate3d(0, 0, 0);
    box-shadow: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s, filter 0.15s, opacity 0.3s ease-out, transform 0.3s cubic-bezier(.2,.8,.2,1), padding 0.3s cubic-bezier(.2,.8,.2,1), border-width 0.3s cubic-bezier(.2,.8,.2,1);
    touch-action: manipulation;
}

.action-button span {
    min-width: 0;
    max-width: none;
    overflow: hidden;
    text-overflow: ellipsis;
}

.action-button svg { flex-shrink: 0; opacity: 0.85; }
.icon-download-action { display: none; }
body.app-encrypt.encrypt-image-mode .btn-copy .icon-copy-action { display: none; }
body.app-encrypt.encrypt-image-mode .btn-copy .icon-download-action { display: block; }
.action-button:not(:disabled) {
    border-color: var(--action-ready-border);
    background: var(--action-ready-bg);
    color: #fff;
    box-shadow: 0 3px 10px var(--action-shadow);
}

.action-button:not(:disabled):hover {
    border-color: transparent;
    color: #fff;
    filter: brightness(0.96);
}
.action-button:active { filter: brightness(0.96); }
.action-button:disabled {
    opacity: 1;
    cursor: not-allowed;
    filter: none;
    box-shadow: none;
    background: var(--action-soft);
    color: var(--action-disabled-text);
    border-color: var(--action-border);
}

.btn-copy  {
    --action-color: var(--copy-accent);
    --action-soft: rgba(53,127,189,0.095);
    --action-border: rgba(53,127,189,0.20);
    --action-ready-bg: var(--copy-accent);
    --action-ready-border: var(--copy-accent);
    --action-shadow: rgba(53,127,189,0.20);
    --action-disabled-text: rgba(53,127,189,0.62);
}
.btn-jar {
    --action-color: var(--jar-accent);
    --action-soft: rgba(47,155,115,0.095);
    --action-border: rgba(47,155,115,0.20);
    --action-ready-bg: var(--jar-accent);
    --action-ready-border: var(--jar-accent);
    --action-shadow: rgba(47,155,115,0.20);
    --action-disabled-text: rgba(47,155,115,0.62);
}
.btn-local {
    --action-color: var(--local-accent);
    --action-soft: rgba(192,121,42,0.10);
    --action-border: rgba(192,121,42,0.22);
    --action-ready-bg: var(--local-accent);
    --action-ready-border: var(--local-accent);
    --action-shadow: rgba(192,121,42,0.22);
    --action-disabled-text: rgba(192,121,42,0.64);
}
.btn-home  {
    --action-color: #66768a;
    --action-soft: rgba(100,116,139,0.095);
    --action-border: rgba(100,116,139,0.20);
    --action-ready-bg: #66768a;
    --action-ready-border: #66768a;
    --action-shadow: rgba(100,116,139,0.20);
    --action-disabled-text: rgba(100,116,139,0.62);
}

body.app-encrypt .btn-jar,
body.app-encrypt .btn-local {
    opacity: 0;
    transform: translate3d(-12px, 0, 0);
    pointer-events: none;
    width: 0;
    min-width: 0;
    flex-basis: 0;
    padding-left: 0;
    padding-right: 0;
    border-left-width: 0;
    border-right-width: 0;
}

body.app-encrypt .bottom-section > .btn-copy {
    width: 100%;
}

body.app-encrypt .bottom-section {
    gap: 6px;
}

body.app-encrypt .content-toolbar,
body.app-encrypt .content-area,
body.app-encrypt .json-view,
body.app-encrypt .progress-panel {
    border-color: var(--card-border);
}

/* --- Dropdown --- */
.suggestions-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--dropdown-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid var(--dropdown-border);
    border-radius: 8px;
    z-index: 10;
    max-height: 240px;
    overflow-y: auto;
    overflow-x: hidden;
    margin-top: 4px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    animation: dropSlideIn 0.15s ease-out;
    -webkit-overflow-scrolling: touch;
}
@keyframes dropSlideIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.suggestions-dropdown::-webkit-scrollbar { width: 5px; }
.suggestions-dropdown::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 3px; }

.suggestion-item {
    color: var(--text-secondary);
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    cursor: pointer;
    font-size: 13px;
    text-decoration: none;
    border-bottom: 1px solid var(--divider);
    transition: background 0.12s;
    min-height: 44px;
    touch-action: manipulation;
}
.suggestion-item:focus-visible {
    outline: 2px solid rgba(74,144,164,0.28);
    outline-offset: -2px;
    background: var(--dropdown-hover);
}
.suggestion-loading {
    justify-content: center;
    color: var(--text-muted);
    cursor: wait;
}
.suggestion-heading {
    padding: 8px 14px 5px;
    font-size: 11px;
    color: var(--text-muted);
    background: var(--dropdown-hover);
    letter-spacing: 0;
}
.suggestion-item .sg-name {
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.suggestion-title {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}
.sg-badge {
    flex-shrink: 0;
    padding: 2px 5px;
    border-radius: 5px;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    font-size: 10px;
    line-height: 1;
    font-family: 'Cascadia Mono', Consolas, monospace;
}
.sg-tags {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}
.sg-badge.secure {
    color: #2d9d6f;
    border-color: rgba(45,157,111,0.24);
    background: rgba(45,157,111,0.08);
}
.sg-badge.cn {
    color: var(--accent);
}
.suggestion-item .sg-url {
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'Cascadia Mono', Consolas, monospace;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.suggestion-item:last-child { border-bottom: none; }
.suggestion-item:hover, .suggestion-item:active { background: var(--dropdown-hover); }
.suggestion-item:hover .sg-name, .suggestion-item:active .sg-name { color: var(--accent); }

/* --- Page Footer --- */
.page-footer {
    width: 100%;
    max-width: 920px;
    margin-top: 16px;
    padding: 0 0 4px;
    text-align: center;
}

.page-footer .copyright {
    font-size: 12px;
    color: var(--footer-text);
}
.page-footer .footer-sub {
    font-size: 11px;
    color: var(--footer-text);
    opacity: 0.55;
    margin-top: 3px;
}

/* === Responsive === */
@media (max-width: 640px) {
    :root { --top-action-width: 112px; }
    .page-wrapper { padding: max(12px, env(safe-area-inset-top)) 10px max(12px, env(safe-area-inset-bottom)); min-height: 100dvh; justify-content: flex-start; overflow-x: hidden; box-sizing: border-box; }
    .top-bar { padding: 10px 12px; gap: 10px; margin-bottom: 0; border-radius: 10px 10px 0 0; border-bottom: none; flex-shrink: 0; width: 100%; max-width: 100%; box-sizing: border-box; }
    .top-bar-title { font-size: 14px; letter-spacing: 0; }
    .top-bar-sub { font-size: 10px; }
    .top-bar-qr img { width: 40px; height: 40px; border-radius: 10px; }
    .top-bar-btn { width: 44px; height: 44px; border-radius: 9px; }
    .top-bar-btn svg { width: 14px; height: 14px; }
    .top-bar-actions { gap: 4px; }
    .theme-toggle { width: 44px; height: 44px; padding: 0; }
    .container { width: 100%; max-width: 100%; min-height: 0; padding: 16px; padding-bottom: 12px; gap: 12px; border-radius: 0 0 10px 10px; border-top: none; flex-grow: 1; display: flex; flex-direction: column; }
    .top-section { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start; flex-shrink: 0; gap: 8px; transition: none; }
    body.app-encrypt .top-section { grid-template-columns: auto minmax(0, 1fr); }
    .mode-switch { width: fit-content; align-self: start; grid-row: 1; grid-column: 1; margin-top: 0; }
    .mode-btn { flex: 0 0 auto; min-width: 54px; padding: 0 10px; }
    .decrypt-button { width: auto; min-width: 108px; justify-self: end; align-self: start; grid-row: 1; grid-column: 2; padding: 10px 14px; margin-top: 0; }
    .input-container { width: 100%; grid-column: 1 / -1; grid-row: 2; max-height: 92px; transition: max-height 0.28s ease-out, opacity 0.2s ease-out, transform 0.28s ease-out; }
    body.app-encrypt .input-container { display: flex; max-height: 0; opacity: 0; transform: translateY(14px); }
    .content-area,
    .json-view,
    .msg-overlay,
    .progress-panel { flex-grow: 1; height: clamp(230px, 42dvh, 360px); min-height: 220px; }
    .encrypt-options { flex-wrap: wrap; gap: 8px; }
    .encrypt-type-switch { flex: 0 0 auto; }
    .cover-upload { flex: 1 1 160px; justify-content: center; }
    .bottom-section { left: 8px; bottom: 8px; gap: 4px; max-width: calc(100% - 16px); padding: 3px; border-radius: 8px; overflow: visible; }
    body.app-encrypt .bottom-section { gap: 4px; }
    body.app-encrypt .btn-jar,
    body.app-encrypt .btn-local { transform: translate3d(0, 10px, 0); }
    .bottom-section > button,
    .bottom-section > a { min-width: 0; }
    .action-button { width: 38px; min-width: 38px; min-height: 38px; padding: 0; font-size: 12px; gap: 0; border-radius: 7px; }
    .action-button span {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }
    .action-button svg { width: 14px; height: 14px; }
    .page-footer { gap: 8px; }
    .suggestions-dropdown { position: absolute; top: 100%; left: 0; right: 0; max-height: min(220px, 36dvh); margin-top: 4px; border-radius: 6px; }
    .suggestion-item { padding: 12px 14px; font-size: 14px; }
    .suggestion-item .sg-url { white-space: normal; word-break: break-all; font-size: 11px; }
    /* 移动端性能优化：关闭高耗 GPU 效果 */
    body { transition: none; }
    ::view-transition-new(root) {
        animation: none;
        clip-path: none;
    }
    body::after { display: none; }
    .glow { animation: none; filter: none; opacity: 0; }
    .top-bar,
    .container,
    .content-toolbar,
    .content-area,
    .json-view,
    .msg-overlay,
    .progress-panel,
    .action-button {
        box-shadow: none;
    }
    .top-bar, .container { backdrop-filter: none; -webkit-backdrop-filter: none; }
    .content-area,
    .json-view {
        padding: 12px 12px 52px;
        font-size: 12px;
        line-height: 1.5;
        scroll-padding-bottom: 52px;
        will-change: auto;
    }
    .msg-overlay.loading::before,
    .msg-icon.loading::before,
    .msg-icon.loading::after,
    .step-item {
        animation: none;
    }
    .progress-fill {
        transition: none;
        box-shadow: none;
    }
}

@media (max-width: 400px) {
    .top-bar { padding-left: 12px; padding-right: 12px; }
    .container { padding-left: 14px; padding-right: 14px; }
    .content-toolbar { top: 6px; left: 4px; padding: 2px; gap: 2px; }
    .toolbar-left,
    .view-switch { gap: 2px; }
    .toolbar-toggle,
    .view-btn,
    .tb-btn { width: 28px; min-width: 28px; min-height: 28px; }
    .content-area,
    .json-view { font-size: 11.5px; line-height: 1.5; }
    .decrypt-button { min-width: 100px; padding-left: 12px; padding-right: 12px; }
    .action-button { min-height: 38px; padding: 6px; font-size: 11px; }
    .action-button svg { width: 13px; height: 13px; }
}

/* --- QR Popup --- */
.qr-popup {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(0,0,0,0.45);
    align-items: center;
    justify-content: center;
    animation: qrFadeIn 0.2s ease-out;
}
.qr-popup.active { display: flex; }
.qr-popup-card {
    background: var(--card);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 16px 48px rgba(0,0,0,0.2);
    animation: qrScaleIn 0.25s ease-out;
    max-width: 260px;
}
.qr-popup-card img {
    width: 180px;
    height: 180px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    display: block;
    margin: 0 auto 12px;
}
.qr-popup-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}
.qr-popup-text strong {
    color: var(--text);
}
@keyframes qrFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes qrScaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

/* --- Decrypt button loading state --- */
.decrypt-button.loading {
    pointer-events: none;
    cursor: wait;
    opacity: 0.7;
    position: relative;
}
.decrypt-button .btn-spinner {
    display: none;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    flex-shrink: 0;
}
.decrypt-button.loading .btn-spinner { display: inline-block; }

/* --- JSON Syntax Highlight (read-only overlay) --- */
.json-view {
    display: none;
    width: 100%;
    height: clamp(260px, 46dvh, 480px);
    min-height: 220px;
    background: var(--code-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 14px 14px 58px;
    font-size: 12.5px;
    line-height: 1.58;
    color: var(--code-text);
    overflow: auto;
    white-space: pre;
    word-wrap: normal;
    font-family: 'Cascadia Mono', Consolas, 'Courier New', monospace;
    box-shadow: var(--inset-shadow);
    transition: border-color 0.2s, background 0.3s;
    cursor: text;
    user-select: text;
    outline: none;
    caret-color: transparent;
    scroll-padding-bottom: 58px;
}
.json-view.active { display: block; }
.json-view.image-preview-view {
    padding: 14px;
    white-space: normal;
}
.image-preview {
    width: 100%;
    height: 100%;
    min-height: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
}
.image-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
}
.json-view::-webkit-scrollbar { width: 6px; height: 6px; }
.json-view::-webkit-scrollbar-track { background: transparent; }
.json-view::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 3px; }

.json-view .jk { color: #9b2c2c; font-weight: 500; }  /* key — 深红 */
.json-view .js { color: #2d8f6f; }  /* string value — 绿 */
.json-view .jn { color: #2563eb; }  /* number — 蓝 */
.json-view .jb { color: #b45309; font-style: italic; }  /* bool/null — 橙棕+斜体 */
.json-view .jc { color: var(--text-muted); }  /* colon */
.json-view .jp { color: #6b7280; }  /* brackets, comma — 灰 */

[data-theme="dark"] .json-view .jk { color: #f07178; font-weight: 500; }
[data-theme="dark"] .json-view .js { color: #c3e88d; }
[data-theme="dark"] .json-view .jn { color: #82aaff; }
[data-theme="dark"] .json-view .jb { color: #ffcb6b; font-style: italic; }
[data-theme="dark"] .json-view .jc { color: #676e7b; }
[data-theme="dark"] .json-view .jp { color: #676e7b; }

@media (max-width: 640px) {
    .content-area,
    .json-view,
    .msg-overlay,
    .progress-panel {
        height: clamp(220px, 40dvh, 340px);
        min-height: 210px;
    }
    .content-area,
    .json-view {
        padding-bottom: 52px;
        scroll-padding-bottom: 52px;
    }
}

@media (max-height: 760px) {
    .page-wrapper { padding-top: 10px; padding-bottom: 10px; }
    .top-bar { padding-top: 10px; padding-bottom: 10px; }
    .container { padding-top: 14px; padding-bottom: 14px; gap: 10px; }
    .content-area,
    .json-view,
    .msg-overlay,
    .progress-panel {
        height: clamp(210px, 38dvh, 320px);
        min-height: 200px;
    }
    .page-footer { margin-top: 10px; }
}

@media (max-height: 680px) {
    .top-bar-title { font-size: 16px; }
    .top-bar-qr img { width: 40px; height: 40px; }
    .container { padding-top: 12px; padding-bottom: 12px; gap: 8px; }
    .content-area,
    .json-view,
    .msg-overlay,
    .progress-panel {
        height: clamp(190px, 36dvh, 290px);
        min-height: 180px;
    }
    .page-footer { margin-top: 8px; }
}

/* Action row stays at the bottom; editor fills the space above it. */
.container,
.main-section,
.content-shell {
    min-height: 0;
}

.container {
    flex: 1 1 auto;
}

.content-shell {
    display: block;
    flex: 1 1 0;
    min-height: 220px;
}

.content-shell > .content-area,
.content-shell > .json-view,
.content-shell > .msg-overlay,
.content-shell > .progress-panel {
    height: 100%;
    min-height: 0;
    overflow: auto;
}

.content-shell > .content-area,
.content-shell > .json-view {
    resize: none;
    padding-bottom: 14px;
    scroll-padding-bottom: 14px;
}

.bottom-section {
    position: static;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr) minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-self: stretch;
    width: 100%;
    max-width: none;
    margin-top: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    transition: grid-template-columns 0.3s cubic-bezier(.2,.8,.2,1), gap 0.3s cubic-bezier(.2,.8,.2,1), opacity 0.16s;
}

.bottom-section:hover,
.main-section:hover .bottom-section,
.main-section:focus-within .bottom-section {
    opacity: 1;
}

.action-button {
    width: auto;
    min-height: 44px;
    padding: 8px 12px;
    gap: 6px;
}

.action-button span {
    position: static;
    width: auto;
    height: auto;
    min-width: 0;
    max-width: none;
    clip: auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 640px) {
    .content-shell {
        flex-basis: 0;
        min-height: 190px;
    }

    .content-shell > .content-area,
    .content-shell > .json-view,
    .content-shell > .msg-overlay,
    .content-shell > .progress-panel {
        min-height: 0;
    }

    .content-shell > .content-area,
    .content-shell > .json-view {
        padding-bottom: 12px;
        scroll-padding-bottom: 12px;
    }

    .bottom-section {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-self: stretch;
        gap: 8px;
        max-width: 100%;
    }

    .action-button {
        width: auto;
        min-width: 0;
        min-height: 40px;
        padding: 7px 8px;
        gap: 5px;
    }

    .action-button span {
        position: static;
        width: auto;
        height: auto;
        clip: auto;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

body.app-encrypt .bottom-section {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0fr) minmax(0, 0fr) minmax(0, 1fr);
    gap: 6px;
}

@media (max-width: 640px) {
    body.app-encrypt .bottom-section {
        grid-template-columns: minmax(0, 1fr) minmax(0, 0fr) minmax(0, 0fr) minmax(0, 1fr);
        gap: 4px;
    }
}

/* Mode action buttons */
.mode-switch {
    gap: 4px;
    padding: 4px;
    border-radius: 10px;
    background: rgba(255,255,255,0.48);
    border-color: rgba(47,143,163,0.16);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.34), 0 2px 6px rgba(0,0,0,0.05);
}

.mode-switch::before {
    top: 4px;
    bottom: 4px;
    left: 4px;
    width: calc((100% - 12px) / 2);
    border-radius: 7px;
}

body.app-encrypt .mode-switch::before {
    transform: translateX(calc(100% + 4px));
}

.mode-btn {
    min-height: 36px;
    padding: 0 16px;
    border-radius: 7px;
}

.mode-btn:not(.active) {
    background: rgba(255,255,255,0.32);
    color: var(--text-secondary);
}

.mode-btn:not(.active):hover {
    background: rgba(47,143,163,0.10);
    color: var(--mode-accent, var(--accent));
}

.decrypt-button {
    border-color: rgba(255,255,255,0.26);
    box-shadow: 0 6px 14px var(--mode-shadow, rgba(74,144,164,0.20)), inset 0 1px 0 rgba(255,255,255,0.20);
}

.decrypt-button:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px var(--mode-shadow, rgba(74,144,164,0.28)), inset 0 1px 0 rgba(255,255,255,0.22);
}

[data-theme="dark"] .mode-switch {
    background: rgba(18,22,29,0.52);
    border-color: rgba(101,182,200,0.16);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

[data-theme="dark"] .mode-btn:not(.active) {
    background: rgba(255,255,255,0.03);
}

.mode-btn,
.encrypt-type-btn,
.cover-upload,
.sib-copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.mode-btn svg,
.encrypt-type-btn svg,
.cover-upload svg,
.sib-copy-btn svg,
.primary-icon {
    flex-shrink: 0;
}

.primary-icon-encrypt {
    display: none;
}

body.app-encrypt .primary-icon-decrypt {
    display: none;
}

body.app-encrypt .primary-icon-encrypt {
    display: block;
}

.decrypt-button.loading .primary-icon {
    display: none !important;
}