:root {
    --bg: #08090a;
    --surface: #0d0e10;
    --card: #17181b;
    --card-hover: #1d1e22;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --text: #e6e6e6;
    --text-muted: #8a8f98;
    --text-faint: #5c5f66;
    --accent: #5e6ad2;
    --accent-hover: #6a76d8;
    --danger: #f2555a;
    --radius-lg: 12px;
    --radius-md: 8px;
    --radius-sm: 6px;
    --c-red-bg: rgba(242, 85, 90, 0.12);
    --c-red-border: rgba(242, 85, 90, 0.28);
    --c-red-border-hover: rgba(242, 85, 90, 0.5);
    --c-orange-bg: rgba(245, 158, 92, 0.12);
    --c-orange-border: rgba(245, 158, 92, 0.28);
    --c-orange-border-hover: rgba(245, 158, 92, 0.5);
    --c-yellow-bg: rgba(233, 201, 89, 0.12);
    --c-yellow-border: rgba(233, 201, 89, 0.28);
    --c-yellow-border-hover: rgba(233, 201, 89, 0.5);
    --c-green-bg: rgba(126, 217, 134, 0.12);
    --c-green-border: rgba(126, 217, 134, 0.28);
    --c-green-border-hover: rgba(126, 217, 134, 0.5);
    --c-teal-bg: rgba(88, 205, 199, 0.12);
    --c-teal-border: rgba(88, 205, 199, 0.28);
    --c-teal-border-hover: rgba(88, 205, 199, 0.5);
    --c-blue-bg: rgba(94, 144, 237, 0.14);
    --c-blue-border: rgba(94, 144, 237, 0.32);
    --c-blue-border-hover: rgba(94, 144, 237, 0.55);
    --c-purple-bg: rgba(167, 139, 250, 0.14);
    --c-purple-border: rgba(167, 139, 250, 0.32);
    --c-purple-border-hover: rgba(167, 139, 250, 0.55);
    --c-pink-bg: rgba(238, 130, 195, 0.12);
    --c-pink-border: rgba(238, 130, 195, 0.28);
    --c-pink-border-hover: rgba(238, 130, 195, 0.5);
    --board-glow: transparent;
    --board-glow-soft: transparent;
    color-scheme: dark;
}

:root[data-board-color] {
    --board-glow: color-mix(in srgb, var(--c-bo) 50%, transparent);
    --board-glow-soft: color-mix(in srgb, var(--c-bo) 16%, transparent);
}

:root[data-board-color][data-theme="light"] {
    --board-glow: color-mix(in srgb, var(--c-bo) 26%, transparent);
    --board-glow-soft: color-mix(in srgb, var(--c-bo) 8%, transparent);
}

:root[data-board-color="red"] { --c-bo: #f44336; }
:root[data-board-color="orange"] { --c-bo: #ff9800; }
:root[data-board-color="yellow"] { --c-bo: #ffd600; }
:root[data-board-color="green"] { --c-bo: #4caf50; }
:root[data-board-color="teal"] { --c-bo: #00bcd4; }
:root[data-board-color="blue"] { --c-bo: #4285f4; }
:root[data-board-color="purple"] { --c-bo: #9c27b0; }
:root[data-board-color="pink"] { --c-bo: #e91e63; }

:root[data-theme="light"] {
    --bg: #f6f7f8;
    --surface: #ffffff;
    --card: #ffffff;
    --card-hover: #f2f3f5;
    --border: rgba(0, 0, 0, 0.1);
    --border-strong: rgba(0, 0, 0, 0.18);
    --text: #1f2328;
    --text-muted: #656d76;
    --text-faint: #8b949e;
    --accent: #4f5bd5;
    --accent-hover: #4550c4;
    --danger: #d1242f;
    --c-red-bg: rgba(239, 68, 68, 0.07);
    --c-red-border: rgba(239, 68, 68, 0.3);
    --c-red-border-hover: rgba(239, 68, 68, 0.5);
    --c-orange-bg: rgba(234, 141, 69, 0.07);
    --c-orange-border: rgba(234, 141, 69, 0.3);
    --c-orange-border-hover: rgba(234, 141, 69, 0.5);
    --c-yellow-bg: rgba(202, 172, 48, 0.09);
    --c-yellow-border: rgba(202, 172, 48, 0.32);
    --c-yellow-border-hover: rgba(202, 172, 48, 0.55);
    --c-green-bg: rgba(74, 176, 85, 0.07);
    --c-green-border: rgba(74, 176, 85, 0.3);
    --c-green-border-hover: rgba(74, 176, 85, 0.5);
    --c-teal-bg: rgba(45, 161, 155, 0.07);
    --c-teal-border: rgba(45, 161, 155, 0.3);
    --c-teal-border-hover: rgba(45, 161, 155, 0.5);
    --c-blue-bg: rgba(59, 103, 209, 0.08);
    --c-blue-border: rgba(59, 103, 209, 0.32);
    --c-blue-border-hover: rgba(59, 103, 209, 0.55);
    --c-purple-bg: rgba(139, 92, 246, 0.08);
    --c-purple-border: rgba(139, 92, 246, 0.32);
    --c-purple-border-hover: rgba(139, 92, 246, 0.55);
    --c-pink-bg: rgba(226, 92, 175, 0.07);
    --c-pink-border: rgba(226, 92, 175, 0.3);
    --c-pink-border-hover: rgba(226, 92, 175, 0.5);
    color-scheme: light;
}

:root[data-theme="light"] .header {
    background: rgba(255, 255, 255, 0.8);
}

:root[data-theme="light"] .board-title:hover,
:root[data-theme="light"] .add-card-btn:hover,
:root[data-theme="light"] .card-menu-item:hover,
:root[data-theme="light"] .list-menu-item:hover,
:root[data-theme="light"] .icon-btn:hover {
    background: rgba(0, 0, 0, 0.06);
}

:root[data-theme="light"] .add-list-btn:hover {
    background: rgba(0, 0, 0, 0.04);
}

:root[data-theme="light"] .card-menu-item-danger:hover {
    background: rgba(209, 36, 47, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1200px 500px at 50% -10%, rgba(94, 106, 210, 0.07), transparent 60%),
        var(--bg);
    transition: background 0.3s ease, color 0.3s ease;
}

.header {
    background: rgba(10, 11, 13, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    position: sticky;
    top: 0;
    z-index: 10;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand {
    font-weight: 600;
    letter-spacing: 0.02em;
    font-size: 1rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    user-select: none;
}

.logo {
    height: 34px;
    width: auto;
    display: block;
    color: var(--text-muted);
}

.brand-btn {
    background: none;
    border: none;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s;
}

.brand-btn:hover {
    background: rgba(255, 255, 255, 0.06);
}

.brand-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.header-sep {
    width: 1px;
    height: 22px;
    background: var(--border-strong);
}

.board-title-wrap {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.board-title {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.15s;
}

.board-title:hover {
    background: rgba(255, 255, 255, 0.06);
}

.board-title-input {
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 5px 10px;
    width: 100%;
    outline: none;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-faint);
    font-size: 0.95rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    line-height: 1;
    transition: color 0.15s, background 0.15s;
}

.icon-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
}

.theme-toggle {
    margin-left: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-moon,
.icon-sun {
    display: none;
}

:root[data-theme="dark"] .icon-sun {
    display: block;
}

:root[data-theme="light"] .icon-moon {
    display: block;
}

.board {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 20px;
    overflow-x: auto;
    min-height: calc(100vh - 62px);
    background:
        radial-gradient(900px 480px at 50% -8%, var(--board-glow, transparent), transparent 70%),
        linear-gradient(180deg, var(--board-glow-soft, transparent), transparent 50%);
    transition: background 0.3s ease;
}

.board-column {
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex-shrink: 0;
}

.list {
    background: var(--list-bg, var(--surface));
    border: 1px solid var(--list-border, var(--border));
    border-radius: var(--radius-lg);
    width: 272px;
    min-width: 272px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 90px);
    align-self: start;
    cursor: grab;
    transition: border-color 0.15s, background-color 0.25s ease, box-shadow 0.15s;
}

.list:hover {
    border-color: var(--list-border-hover, var(--border-strong));
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.list[data-color="red"] {
    --list-bg: var(--c-red-bg);
    --list-border: var(--c-red-border);
    --list-border-hover: var(--c-red-border-hover);
}

.list[data-color="orange"] {
    --list-bg: var(--c-orange-bg);
    --list-border: var(--c-orange-border);
    --list-border-hover: var(--c-orange-border-hover);
}

.list[data-color="yellow"] {
    --list-bg: var(--c-yellow-bg);
    --list-border: var(--c-yellow-border);
    --list-border-hover: var(--c-yellow-border-hover);
}

.list[data-color="green"] {
    --list-bg: var(--c-green-bg);
    --list-border: var(--c-green-border);
    --list-border-hover: var(--c-green-border-hover);
}

.list[data-color="teal"] {
    --list-bg: var(--c-teal-bg);
    --list-border: var(--c-teal-border);
    --list-border-hover: var(--c-teal-border-hover);
}

.list[data-color="blue"] {
    --list-bg: var(--c-blue-bg);
    --list-border: var(--c-blue-border);
    --list-border-hover: var(--c-blue-border-hover);
}

.list[data-color="purple"] {
    --list-bg: var(--c-purple-bg);
    --list-border: var(--c-purple-border);
    --list-border-hover: var(--c-purple-border-hover);
}

.list[data-color="pink"] {
    --list-bg: var(--c-pink-bg);
    --list-border: var(--c-pink-border);
    --list-border-hover: var(--c-pink-border-hover);
}

.list:active {
    cursor: grabbing;
}

.list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 4px 10px;
    user-select: none;
}

.list.dragging {
    opacity: 0.35;
    border-color: var(--accent);
    position: relative;
    z-index: 5;
    box-shadow:
        0 0 0 2px var(--accent),
        0 0 18px 4px rgba(94, 106, 210, 0.7);
    transition: opacity 0.15s ease, border-color 0.15s ease;
}

.list-title {
    font-weight: 500;
    font-size: 0.92rem;
    padding: 4px 6px;
    color: var(--text);
    border-radius: var(--radius-sm);
    cursor: text;
    transition: background 0.15s;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.list-title:hover {
    background: rgba(255, 255, 255, 0.06);
}

.list-title-input {
    font-size: 0.92rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 4px 6px;
    flex: 1;
    min-width: 0;
    outline: none;
}

.list-menu-wrap {
    position: relative;
    flex-shrink: 0;
}

.list-menu-btn {
    color: var(--text-faint);
}

.list-menu-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
}

.list-menu {
    position: absolute;
    top: 30px;
    right: 0;
    z-index: 20;
    min-width: 176px;
    background: var(--card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    padding: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.list-menu-item {
    background: none;
    border: none;
    text-align: left;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s;
}

.list-menu-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.list-menu-item-danger {
    color: var(--danger);
}

.list-menu-item-danger:hover {
    background: rgba(242, 85, 90, 0.1);
}

.list-menu-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    padding: 6px 10px 2px;
}

.list-color-picker {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 6px 10px 10px;
}

.list-color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.15);
    cursor: pointer;
    padding: 0;
    position: relative;
    transition: transform 0.1s, box-shadow 0.15s;
}

.list-color-swatch:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.list-color-swatch[data-swatch="red"] {
    background: #f2555a;
}

.list-color-swatch[data-swatch="orange"] {
    background: #f0945c;
}

.list-color-swatch[data-swatch="yellow"] {
    background: #d9b64a;
}

.list-color-swatch[data-swatch="green"] {
    background: #6cc27a;
}

.list-color-swatch[data-swatch="teal"] {
    background: #45b8b0;
}

.list-color-swatch[data-swatch="blue"] {
    background: #5b8fe8;
}

.list-color-swatch[data-swatch="purple"] {
    background: #9778f5;
}

.list-color-swatch[data-swatch="pink"] {
    background: #e88ac4;
}

.list-color-swatch.active {
    box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--text);
}

.swatch-none {
    background: var(--card);
    border: 1px solid var(--border-strong);
    overflow: hidden;
}

.swatch-none::after {
    content: '';
    position: absolute;
    left: 15%;
    right: 15%;
    top: 50%;
    height: 2px;
    background: var(--text-faint);
    transform: translateY(-50%) rotate(-45deg);
}

.cards {
    flex: 1;
    min-height: 40px;
    overflow-y: auto;
    padding: 2px;
    border-radius: var(--radius-md);
    transition: background 0.15s;
}

.cards:empty::before {
    content: "Drop cards here";
    display: block;
    text-align: center;
    color: var(--text-faint);
    font-size: 0.82rem;
    padding: 16px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    margin-bottom: 8px;
    cursor: pointer;
    font-size: 0.88rem;
    line-height: 1.4;
    white-space: pre-wrap;
    word-break: break-word;
    transition: background 0.1s, border-color 0.1s, transform 0.1s, box-shadow 0.15s;
}

.card:hover {
    background: var(--card-hover);
    border-color: var(--border-strong);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.card:active {
    transform: scale(0.98);
}

.card,
.list {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

body.touch-dragging {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.card-title {
    display: block;
    font-size: 0.88rem;
    line-height: 1.4;
}

.card-description-icon {
    display: inline-flex;
    align-items: center;
    margin-top: 6px;
    color: var(--text-faint);
}

.card-link-preview {
    display: block;
    margin-top: 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s;
}

.card-link-preview:hover {
    border-color: var(--border-strong);
}

.card-link-image {
    display: block;
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--card-hover);
}

.card-link-title {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 8px 10px 4px;
    color: var(--text);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-link-desc {
    font-size: 0.72rem;
    color: var(--text-muted);
    padding: 0 10px;
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-link-domain {
    font-size: 0.7rem;
    color: var(--text-faint);
    padding: 0 10px 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.card-link-favicon {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
}

.card-has-preview {
    padding-bottom: 32px;
}

.card.dragging {
    opacity: 0.35;
    border-color: var(--accent);
    box-shadow:
        0 0 0 2px var(--accent),
        0 0 18px 4px rgba(94, 106, 210, 0.7);
    transition: opacity 0.15s ease, border-color 0.15s ease;
}

.drag-preview {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    pointer-events: none;
    opacity: 0.96;
    transform-origin: top center;
    will-change: transform;
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
    user-select: none;
    -webkit-user-select: none;
}

.add-card-btn {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 8px 10px;
    margin-top: auto;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    font-family: inherit;
    transition: background 0.15s, color 0.15s;
}

.add-card-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}

.add-list-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: var(--radius-lg);
    padding: 12px 14px;
    width: 272px;
    min-width: 272px;
    align-self: start;
    cursor: pointer;
    font-size: 0.88rem;
    font-family: inherit;
    text-align: left;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.add-list-btn:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-strong);
    color: var(--text);
}

.composer {
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: composer-in 0.15s ease;
}

@keyframes composer-in {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.composer-list {
    width: 272px;
    min-width: 272px;
    align-self: start;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 10px;
}

.composer textarea {
    width: 100%;
    background: var(--card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    font-family: inherit;
    font-size: 0.88rem;
    color: var(--text);
    resize: vertical;
    outline: none;
    transition: border-color 0.15s;
}

.composer textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(94, 106, 210, 0.25);
}

.composer-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    background: var(--card);
    color: var(--text);
    transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
    background: var(--card-hover);
    border-color: var(--border-strong);
}

.btn-primary {
    background: var(--accent);
    border-color: transparent;
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: transparent;
}

.btn-danger {
    background: transparent;
    border-color: transparent;
    color: var(--danger);
}

.btn-danger:hover {
    background: rgba(242, 85, 90, 0.1);
    border-color: transparent;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    padding: 20px;
    overflow-y: auto;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: backdrop-in 0.2s ease;
}

.modal-card {
    position: relative;
    margin: auto;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    width: 100%;
    min-width: 960px;
    max-width: 960px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modal-in 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.modal.closing .modal-backdrop {
    animation: backdrop-in 0.15s ease reverse;
}

.modal.closing .modal-card {
    animation: modal-in 0.15s ease reverse;
}

@keyframes backdrop-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modal-in {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.modal-title-input {
    display: block;
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    padding: 4px 48px 12px 48px;
    font-family: inherit;
    font-size: 1.4rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text);
    outline: none;
    resize: none;
    overflow: hidden;
    transition: border-color 0.15s;
}

.modal-title-input:focus {
    border-color: var(--accent);
}

.description-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    margin: 32px 0 8px;
}

.description-view {
    min-height: 96px;
    padding: 10px 12px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: text;
    font-size: 0.88rem;
    line-height: 1.5;
    transition: border-color 0.15s, background 0.15s;
}

.description-view:hover {
    border-color: var(--border-strong);
}

.description-view.empty {
    color: var(--text-faint);
}

.modal-textarea {
    width: 100%;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    font-family: inherit;
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--text);
    resize: none;
    overflow: hidden;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.description-actions {
    position: sticky;
    bottom: -24px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    padding: 12px 0;
    background: var(--surface);
    border-top: 1px solid transparent;
    transition: border-color 0.15s;
}

.description-actions .btn {
    opacity: 0;
    pointer-events: none;
    transform: translateY(4px);
    transition: opacity 0.15s, transform 0.15s;
}

.description-actions.editing {
    border-top-color: var(--border);
}

.description-actions.editing .btn {
    opacity: 1;
    pointer-events: auto;
    transform: none;
}

.modal-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(94, 106, 210, 0.25);
}

.modal-shell {
    position: relative;
    margin: 48px auto;
}

.header-menu-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.header-menu-btn {
    color: var(--text-faint);
}

.header-menu {
    position: absolute;
    top: 40px;
    right: 0;
    z-index: 20;
    min-width: 176px;
    background: var(--card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    padding: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.board-picker .list-color-swatch[data-swatch="red"] {
    background: #ff5252;
}

.board-picker .list-color-swatch[data-swatch="orange"] {
    background: #ff9800;
}

.board-picker .list-color-swatch[data-swatch="yellow"] {
    background: #ffd600;
}

.board-picker .list-color-swatch[data-swatch="green"] {
    background: #4caf50;
}

.board-picker .list-color-swatch[data-swatch="teal"] {
    background: #00bcd4;
}

.board-picker .list-color-swatch[data-swatch="blue"] {
    background: #4285f4;
}

.board-picker .list-color-swatch[data-swatch="purple"] {
    background: #9c27b0;
}

.board-picker .list-color-swatch[data-swatch="pink"] {
    background: #e91e63;
}

.board-drawer {
    position: fixed;
    inset: 0;
    z-index: 40;
    visibility: hidden;
    pointer-events: none;
}

.board-drawer.open {
    visibility: visible;
    pointer-events: auto;
}

@media (prefers-reduced-motion: no-preference) {
    .board-drawer {
        transition: visibility 0s linear 0.28s;
    }

    .board-drawer.open {
        transition: visibility 0s linear 0s;
    }
}

.drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.board-drawer.open .drawer-backdrop {
    opacity: 1;
}

.drawer-panel {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 88vw);
    background: var(--surface);
    border-right: 1px solid var(--border-strong);
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.3, 1);
    z-index: 1;
}

.board-drawer.open .drawer-panel {
    transform: none;
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 16px 12px;
}

.drawer-title {
    font-weight: 600;
    font-size: 1rem;
}

.board-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.board-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.board-list-item:hover {
    background: var(--card);
    border-color: var(--border);
}

.board-list-item.active {
    background: var(--card);
    border-color: var(--border-strong);
}

.board-list-item.active .board-list-name {
    font-weight: 500;
}

.board-list-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--text-faint);
}

.board-list-dot[data-color="red"] { background: #ff5252; }
.board-list-dot[data-color="orange"] { background: #ff9800; }
.board-list-dot[data-color="yellow"] { background: #ffd600; }
.board-list-dot[data-color="green"] { background: #4caf50; }
.board-list-dot[data-color="teal"] { background: #00bcd4; }
.board-list-dot[data-color="blue"] { background: #4285f4; }
.board-list-dot[data-color="purple"] { background: #9c27b0; }
.board-list-dot[data-color="pink"] { background: #e91e63; }

.board-list-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.board-list-count {
    color: var(--text-faint);
    font-size: 0.78rem;
    flex-shrink: 0;
}

.board-list-delete {
    background: none;
    border: none;
    color: var(--text-faint);
    font-size: 1rem;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
    flex-shrink: 0;
}

.board-list-item:hover .board-list-delete {
    opacity: 1;
}

.board-list-delete:hover {
    color: var(--danger);
    background: rgba(242, 85, 90, 0.1);
}

.drawer-footer {
    padding: 12px 16px 16px;
}

.new-board-btn {
    width: 100%;
}

@keyframes board-swap {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.board-swap {
    animation: board-swap 0.22s ease;
}

.card-menu-btn,
.modal-close-btn {
    position: absolute;
    top: 28px;
    z-index: 5;
    font-size: 1.9rem;
    line-height: 1;
    padding: 0;
    width: 37px;
    height: 37px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-menu-btn {
    right: 12px;
}

.modal-close-btn {
    left: 20px;
}

.card-menu {
    position: absolute;
    top: 72px;
    right: 12px;
    z-index: 5;
    min-width: 150px;
    background: var(--card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    padding: 4px;
    display: flex;
    flex-direction: column;
}

.card-menu-item {
    background: none;
    border: none;
    text-align: left;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s;
}

.card-menu-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.card-menu-item-danger {
    color: var(--danger);
}

.card-menu-item-danger:hover {
    background: rgba(242, 85, 90, 0.1);
}

.markdown > *:first-child {
    margin-top: 0;
}

.markdown > *:last-child {
    margin-bottom: 0;
}

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4,
.markdown h5,
.markdown h6 {
    color: var(--text);
    font-weight: 600;
    line-height: 1.3;
    margin: 16px 0 8px;
}

.markdown h1 { font-size: 1.15rem; }
.markdown h2 { font-size: 1.05rem; }
.markdown h3 { font-size: 0.98rem; }
.markdown h4, .markdown h5, .markdown h6 { font-size: 0.9rem; }

.markdown p {
    margin: 8px 0;
}

.markdown ul,
.markdown ol {
    margin: 8px 0;
    padding-left: 22px;
}

.markdown li {
    margin: 4px 0;
}

.markdown code {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 5px;
    font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
    font-size: 0.82em;
}

.markdown pre {
    background: #0a0b0c;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px;
    overflow-x: auto;
    margin: 10px 0;
}

.markdown pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.82em;
    line-height: 1.5;
}

.markdown blockquote {
    margin: 10px 0;
    padding: 2px 12px;
    border-left: 3px solid var(--accent);
    color: var(--text-muted);
}

.markdown a {
    color: var(--accent-hover);
    text-decoration: none;
}

.markdown a:hover {
    text-decoration: underline;
}

.markdown hr {
    border: none;
    border-top: 1px solid var(--border-strong);
    margin: 14px 0;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

::selection {
    background: rgba(94, 106, 210, 0.35);
}

.hidden {
    display: none !important;
}

@media (max-width: 640px) {
    .header {
        padding: 10px 12px;
    }

    .header-inner {
        gap: 12px;
    }

    .logo {
        height: 28px;
    }

    .board-title {
        font-size: 0.95rem;
        padding: 4px 8px;
    }

    .board-title-input {
        width: 100%;
        font-size: 0.95rem;
        padding: 4px 8px;
    }

    .board {
        padding: 16px 12px;
        gap: 12px;
        min-height: calc(100vh - 58px);
        min-height: calc(100dvh - 58px);
    }

    .board-column {
        gap: 12px;
    }

    .list {
        max-height: calc(100vh - 84px);
        max-height: calc(100dvh - 84px);
    }

    .list-color-swatch {
        width: 28px;
        height: 28px;
    }

    .modal {
        padding: 8px;
    }

    .modal-shell {
        width: 100%;
        margin: 24px auto;
    }

    .modal-card {
        min-width: 0;
        max-width: 100%;
        padding: 20px 16px;
        max-height: calc(100vh - 16px);
        max-height: calc(100dvh - 16px);
    }

    .description-actions {
        bottom: -20px;
    }

    .description-label {
        margin: 20px 0 6px;
    }

    .modal-title-input {
        font-size: 1.2rem;
    }
}

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

/* Sign-in / sign-up modal */
.auth-modal {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    padding: 20px;
    overflow-y: auto;
}

.auth-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: backdrop-in 0.2s ease;
}

.auth-panel {
    position: relative;
    margin: auto;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 380px;
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modal-in 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.auth-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.auth-title {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.auth-tabs {
    display: flex;
    gap: 4px;
    padding: 3px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 18px;
}

.auth-tab {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-faint);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 7px 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.auth-tab.active {
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.auth-label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-faint);
    margin-top: 10px;
}

.auth-label:first-child {
    margin-top: 0;
}

.auth-input {
    width: 100%;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 9px 12px;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.auth-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(94, 106, 210, 0.25);
}

.auth-error {
    font-size: 0.82rem;
    color: var(--danger);
    margin-top: 10px;
}

.auth-submit {
    margin-top: 14px;
}

.auth-note {
    font-size: 0.78rem;
    color: var(--text-faint);
    margin-top: 12px;
    line-height: 1.4;
}

.auth-modal:not(.auth-closable) .auth-close {
    display: none;
}

@media (max-width: 600px) {
    .auth-panel {
        max-width: 100%;
        padding: 20px 16px;
    }
}

/* Settings modal */
.settings-modal {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    padding: 20px;
    overflow-y: auto;
}

.settings-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: backdrop-in 0.2s ease;
}

.settings-panel {
    position: relative;
    margin: auto;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 380px;
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modal-in 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.settings-title {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.settings-section {
    margin-bottom: 18px;
}

.settings-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    margin-bottom: 8px;
}

.settings-segmented {
    display: flex;
    gap: 4px;
    padding: 3px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.settings-segment {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-faint);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 7px 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.settings-segment.active {
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
    border-top: 1px solid var(--border);
}

.settings-row-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    cursor: pointer;
}

.settings-row-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
}

.settings-row-desc {
    font-size: 0.78rem;
    color: var(--text-faint);
}

.settings-switch {
    appearance: none;
    -webkit-appearance: none;
    flex-shrink: 0;
    width: 40px;
    height: 22px;
    border-radius: 999px;
    background: var(--border-strong);
    position: relative;
    cursor: pointer;
    outline: none;
    transition: background 0.15s;
}

.settings-switch::before {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    transition: transform 0.15s;
}

.settings-switch:checked {
    background: var(--accent);
}

.settings-switch:checked::before {
    transform: translateX(18px);
}

.settings-switch:focus-visible {
    box-shadow: 0 0 0 3px rgba(94, 106, 210, 0.25);
}

/* Confirm dialog */
.confirm-panel {
    position: relative;
    margin: auto;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 320px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modal-in 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.confirm-message {
    font-size: 0.92rem;
    color: var(--text);
    line-height: 1.45;
    margin-bottom: 18px;
}

.confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.btn-danger {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    filter: brightness(1.08);
}