:root {
    --bg: #0f1419;
    --bg-soft: rgba(255, 255, 255, 0.08);
    --panel: rgba(20, 27, 36, 0.95);
    --line: rgba(255, 255, 255, 0.1);
    --text: #eaeaea;
    --text-secondary: #a0a8b8;
    --accent: #ff9966;
    --accent-deep: #ff7733;
    
    /* Categories */
    --cat-work: #64b5f6;
    --cat-work-light: rgba(100, 181, 246, 0.15);
    --cat-academic: #ba68c8;
    --cat-academic-light: rgba(186, 104, 200, 0.15);
    --cat-personal: #f48fb1;
    --cat-personal-light: rgba(244, 143, 177, 0.15);
    
    /* Status colors */
    --success: #81c784;
    --danger: #e57373;
    --muted-warm: #9e9e9e;
    --warning: #ffb74d;
    
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
    --radius: 20px;
    --radius-sm: 12px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, #0a0e13 0%, #141a24 100%);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
    font: inherit;
}

input,
textarea,
select {
    width: 100%;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    background: rgba(30, 40, 50, 0.8);
    color: var(--text);
    transition: border-color 0.2s ease;
}

input:not([type="checkbox"]):not([type="radio"]):focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 153, 102, 0.15);
}

textarea {
    resize: vertical;
    font-family: inherit;
}

select {
    cursor: pointer;
}

/* Layout */
.page-shell {
    width: min(1200px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

/* Topbar */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg-soft);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand strong {
    font-size: 1.2rem;
    color: var(--text);
}

.brand small {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.brand-mark {
    width: 4px;
    height: 32px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--accent) 0%, var(--success) 100%);
}

.topbar-actions {
    display: flex;
    gap: 0.75rem;
}

.topbar-actions form {
    margin: 0;
}

/* Headings */
h1,
h2,
h3 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    margin: 0 0 0.5rem;
}

h2 {
    font-size: 1.5rem;
    margin: 0;
}

.eyebrow {
    display: block;
    margin: 0 0 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
}

/* Buttons */
.ghost-button,
.primary-button,
.secondary-button,
.status-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1.5px solid transparent;
    border-radius: 999px;
    padding: 0.85rem 1.25rem;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    gap: 0.5rem;
    white-space: nowrap;
}

.primary-button {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 119, 51, 0.4);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 119, 51, 0.6);
}

.secondary-button {
    background: var(--bg-soft);
    border-color: var(--line);
    color: var(--text);
}

.secondary-button:hover {
    border-color: var(--accent);
    background: rgba(255, 153, 102, 0.1);
}

.ghost-button {
    background: transparent;
    border-color: var(--line);
    color: var(--text);
}

.ghost-button:hover {
    background: var(--bg-soft);
}

.status-button {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--line);
    font-size: 0.9rem;
    padding: 0.7rem 1rem;
}

.status-button:hover {
    background: white;
    border-color: var(--accent);
}

.status-button.active {
    background: rgba(213, 109, 49, 0.15);
    border-color: var(--accent);
    color: var(--accent-deep);
    font-weight: 600;
}

.status-button.success {
    color: var(--success);
    border-color: rgba(22, 163, 74, 0.3);
    background: rgba(22, 163, 74, 0.08);
}

.status-button.success:hover {
    border-color: var(--success);
    background: rgba(22, 163, 74, 0.15);
}

.status-button.success.active {
    background: rgba(22, 163, 74, 0.25);
    border-color: var(--success);
    font-weight: 600;
}

.status-button.danger {
    color: var(--danger);
    border-color: rgba(220, 38, 38, 0.3);
    background: rgba(220, 38, 38, 0.08);
}

.status-button.danger:hover {
    border-color: var(--danger);
    background: rgba(220, 38, 38, 0.15);
}

.status-button.danger.active {
    background: rgba(220, 38, 38, 0.25);
    border-color: var(--danger);
    font-weight: 600;
}

/* Hero/Header sections */
.hero,
.detail-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: linear-gradient(135deg, rgba(255, 153, 102, 0.08) 0%, rgba(100, 181, 246, 0.05) 100%);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.hero-copy {
    max-width: 55ch;
    margin: 1rem 0 0;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* date picker on dashboard */
.day-jump-form {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: auto auto auto;
    align-items: center;
    gap: 0.5rem;
}

.day-jump-form label {
    font-weight: 500;
    white-space: nowrap;
}

.day-jump-form input[type="date"] {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    width: auto;
}

.day-jump-form button {
    padding: 0.4rem 0.8rem;
}

@media (max-width: 450px) {
    .day-jump-form {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }
    .day-jump-form button {
        justify-self: start;
    }
}

/* Grid layouts */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.time-lane {
    margin-bottom: 2rem;
}

.time-lane-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.time-lane-header h2 {
    margin: 0;
    font-size: 1.2rem;
}

.time-lane-header .muted {
    margin: 0;
    font-size: 0.9rem;
}

/* simplified card summaries */
.day-card-summary {
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
    transition: background 0.2s ease, transform 0.2s ease;
}

.day-card-summary.is-today {
    border-color: var(--accent);
}

.day-card-summary:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
}

.day-card-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    color: inherit;
    text-decoration: none;
}

.day-card-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.day-card-date {
    font-size: 1.25rem;
    font-weight: 600;
}

.day-card-weekday {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.day-card-stats {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.day-card-stat {
    min-width: 34px;
    height: 24px;
    padding: 0 0.45rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text);
    background: rgba(255,255,255,0.08);
}

.day-card-stat-icon {
    font-size: 0.7rem;
    line-height: 1;
}

.day-card-stat.pending {
    color: var(--accent);
}

.day-card-stat.done {
    color: var(--success);
}

.day-card-stat.not-done {
    color: var(--danger);
}

.day-card-stat.canceled {
    color: var(--muted-warm);
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

/* Detail layout */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .detail-layout {
        grid-template-columns: 1fr 1fr;
    }
}

/* Day statistics */
.day-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--line);
}

.stat-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.stat-icon.pending {
    background: rgba(255, 153, 102, 0.2);
    color: var(--accent);
}

.stat-icon.done {
    background: rgba(129, 199, 132, 0.2);
    color: var(--success);
}

.stat-icon.not_done {
    background: rgba(229, 115, 115, 0.2);
    color: var(--danger);
}

.stat-icon.canceled {
    background: rgba(158, 158, 158, 0.2);
    color: var(--muted-warm);
}

.stat-icon::before {
    content: '';
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: currentColor;
}

.stat-label {
    margin: 0 0 0.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.stat-value {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text);
}

/* Form styles */
.add-task-form,
.stack-form {
    display: grid;
    gap: 1rem;
}

.form-group {
    display: grid;
    gap: 0.5rem;
}

.form-group label {
    margin: 0;
}

.full-width {
    width: 100%;
}

/* Tasks section */
.tasks-section {
    margin-top: 3rem;
}

.tasks-section h2 {
    margin: 0 0 1.5rem 0;
    color: var(--text);
    font-size: 1.3rem;
}

.category-task-group {
    margin-top: 1.5rem;
}

.category-task-group:first-of-type {
    margin-top: 0.75rem;
}

.category-group-title {
    margin: 0 0 0.75rem;
    font-size: 1rem;
}

/* filter controls above task list */
.task-filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: center;
}

.task-filter-form label {
    font-weight: 500;
}

.task-filter-form select {
    padding: 0.35rem 0.6rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
}

@media (max-width: 550px) {
    .task-filter-form {
        flex-direction: column;
        align-items: flex-start;
    }
}

.task-list {
    display: grid;
    gap: 0.75rem;
}

/* Task item - simplified */
.task-item {
    display: flex;
    align-items: stretch;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: rgba(30, 40, 50, 0.4);
    transition: all 0.2s ease;
}

.task-item:hover {
    background: rgba(30, 40, 50, 0.7);
    border-color: rgba(255, 153, 102, 0.3);
}

/* colored edge according to task category */
.task-item.work {
    border-left: 4px solid var(--cat-work);
}
.task-item.academic {
    border-left: 4px solid var(--cat-academic);
}
.task-item.personal {
    border-left: 4px solid var(--cat-personal);
}

.task-main {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    flex: 1;
}

.task-check {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 0.2rem;
}

.task-content {
    display: grid;
    gap: 0.35rem;
    flex: 1;
}

.task-title-row {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.task-title {
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.4;
}

.task-description {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    padding: 0.5rem 0.5rem;
    border-left: 2px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
}

.task-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.task-status-buttons {
    display: flex;
    gap: 0.25rem;
}

.status-form-inline {
    margin: 0;
}

.status-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid var(--line);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
}

.status-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--line);
}

.pending-btn {
    color: var(--accent);
}

.pending-btn.active {
    background: rgba(255, 153, 102, 0.2);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: bold;
}

.done-btn {
    color: var(--success);
}

.done-btn.active {
    background: rgba(129, 199, 132, 0.2);
    border-color: var(--success);
    color: var(--success);
    font-weight: bold;
}

.not-done-btn {
    color: var(--danger);
}

.not-done-btn.active {
    background: rgba(229, 115, 115, 0.2);
    border-color: var(--danger);
    color: var(--danger);
    font-weight: bold;
}

.canceled-btn {
    color: var(--muted-warm);
}

.canceled-btn.active {
    background: rgba(158, 158, 158, 0.2);
    border-color: var(--muted-warm);
    color: var(--muted-warm);
    font-weight: bold;
}

.task-edit-link {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid var(--line);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.task-edit-link:hover {
    border-color: var(--accent);
    background: rgba(255, 153, 102, 0.15);
    color: var(--accent);
}

.task-edit-link svg {
    width: 16px;
    height: 16px;
}

/* Empty state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3rem;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--line);
    background: rgba(255, 255, 255, 0.02);
    text-align: center;
    min-height: 200px;
}

.empty-state svg {
    opacity: 0.2;
}

.empty-state p {
    margin: 0;
    color: var(--text-secondary);
}

/* Cards and Panels */
.day-card,
.panel {
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(6px);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.day-card:hover {
    border-color: rgba(213, 109, 49, 0.4);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.day-card.is-today {
    border: 1.5px solid var(--accent);
    background: linear-gradient(135deg, rgba(255, 153, 102, 0.1) 0%, rgba(255, 153, 102, 0.05) 100%);
}

.day-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.panel-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.day-label {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Status chips */
.status-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
}

.status-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.status-chip.pending {
    color: var(--accent);
    background: rgba(255, 153, 102, 0.15);
}

.status-chip.done {
    color: var(--success);
    background: rgba(129, 199, 132, 0.15);
}

.status-chip.not_done {
    color: var(--danger);
    background: rgba(229, 115, 115, 0.15);
}

.status-chip.canceled {
    color: var(--muted-warm);
    background: rgba(158, 158, 158, 0.2);
}

.status-chip.neutral {
    color: var(--text-secondary);
    background: rgba(160, 168, 184, 0.1);
}

.status-chip.highlight {
    color: white;
    background: linear-gradient(135deg, var(--accent) 0%, var(--success) 100%);
    box-shadow: 0 4px 12px rgba(255, 119, 51, 0.4);
}

.status-chip.deadline {
    background: rgba(255, 99, 71, 0.2);
    color: var(--danger);
    font-weight: 600;
}

/* highlight task container when the deadline is soon */
.task-item.due-soon {
    box-shadow: 0 0 0 2px var(--danger);
}

/* Category chips */
.category-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
}

.category-chip.work {
    color: var(--cat-work);
    background: var(--cat-work-light);
}

.category-chip.academic {
    color: var(--cat-academic);
    background: var(--cat-academic-light);
}

.category-chip.personal {
    color: var(--cat-personal);
    background: var(--cat-personal-light);
}

.category-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

/* Task preview/list */
.task-preview,
.task-list,
.stack-form {
    display: grid;
    gap: 1rem;
}

.task-line {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.task-line:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--line);
}

.task-dot {
    flex-shrink: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(35, 24, 12, 0.15);
    transition: all 0.2s ease;
}

.task-dot.pending {
    background: var(--accent);
    box-shadow: 0 0 8px rgba(255, 153, 102, 0.5);
}

.task-dot.done {
    background: var(--success);
    box-shadow: 0 0 8px rgba(129, 199, 132, 0.5);
}

.task-dot.not_done {
    background: var(--danger);
    box-shadow: 0 0 8px rgba(229, 115, 115, 0.5);
}

.task-dot.canceled {
    background: var(--muted-warm);
    box-shadow: 0 0 8px rgba(158, 158, 158, 0.5);
}


/* Messages */
.messages {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.message {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--line);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(6px);
    box-shadow: var(--shadow);
}

.message.success {
    border-color: rgba(129, 199, 132, 0.4);
    background: rgba(129, 199, 132, 0.1);
    color: var(--success);
}

.message.error {
    border-color: rgba(229, 115, 115, 0.4);
    background: rgba(229, 115, 115, 0.1);
    color: var(--danger);
}

/* Forms */
.stack-form {
    display: grid;
    gap: 1.25rem;
}

.category-create-form {
    margin-top: 1rem;
    display: grid;
    gap: 0.6rem;
}

.category-create-row {
    display: grid;
    grid-template-columns: 1fr 170px;
    gap: 0.6rem;
    align-items: center;
}

.category-manage {
    margin-top: 1rem;
    display: grid;
    gap: 0.6rem;
}

.category-manage h3 {
    margin: 0 0 0.2rem;
    font-size: 1rem;
}

.category-manage-item {
    display: grid;
    grid-template-columns: 1fr 140px;
    gap: 0.6rem;
    align-items: center;
    padding: 0.55rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
}

.category-manage-form {
    display: grid;
    grid-template-columns: 1fr 130px;
    gap: 0.6rem;
}

.category-manage-form input {
    margin: 0;
}

.category-manage-form .secondary-button {
    width: 100%;
}

.category-manage-action {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.category-manage-action form {
    width: 100%;
    margin: 0;
}

.category-manage-action .ghost-button {
    width: 100%;
}

.category-manage-action .status-chip {
    width: 100%;
    text-align: center;
    justify-content: center;
}

.stats-list {
    display: grid;
    gap: 0.5rem;
}

.stats-list p {
    margin: 0;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
}

.stats-table th,
.stats-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
}

.stats-table thead th {
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.stats-table tbody tr:last-child td {
    border-bottom: 0;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text);
}

.category-select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2em;
    padding-right: 2.5rem;
}

/* Muted text */
.muted {
    color: var(--text-secondary);
}

.qr-box {
    display: inline-flex;
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: #fff;
    margin-bottom: 1rem;
}

.qr-box svg {
    width: 220px;
    height: 220px;
}

.secret-key {
    margin: 0 0 1rem;
    padding: 0.8rem 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(30, 40, 50, 0.8);
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Responsive */
@media (max-width: 768px) {
    .page-shell {
        width: calc(100% - 1rem);
        padding: 1rem 0 2rem;
    }

    .topbar {
        flex-direction: row;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.75rem;
        padding: 0.9rem 1rem;
    }

    .brand {
        min-width: 0;
        flex: 1 1 auto;
        gap: 0.65rem;
    }

    .brand small {
        display: none;
    }

    .topbar-actions {
        width: 100%;
        display: flex;
        flex-wrap: nowrap;
        gap: 0.45rem;
        overflow-x: auto;
        padding-bottom: 0.2rem;
        -webkit-overflow-scrolling: touch;
    }

    .topbar-actions a,
    .topbar-actions form,
    .topbar-actions form button {
        width: auto;
        flex: 0 0 auto;
    }

    .topbar-actions .ghost-button,
    .topbar-actions .secondary-button,
    .topbar-actions .primary-button {
        width: auto;
        padding: 0.58rem 0.82rem;
        font-size: 0.86rem;
        white-space: nowrap;
    }

    .hero,
    .detail-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1.5rem;
    }

    .ghost-button,
    .primary-button,
    .secondary-button,
    .status-button {
        width: 100%;
    }

    .task-item-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .task-edit-btn {
        width: 100%;
    }

    .task-status-buttons {
        grid-template-columns: 1fr;
    }

    .detail-layout {
        grid-template-columns: 1fr;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .time-lane-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.35rem;
    }

    .category-create-row {
        grid-template-columns: 1fr;
    }

    .category-manage-item,
    .category-manage-form {
        grid-template-columns: 1fr;
    }

    .category-manage-action {
        justify-content: stretch;
    }
}

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