/* Base & Variables */
:root {
    --bg-dark: #09090b;
    /* Zinc 950 */
    --bg-panel: rgba(24, 24, 27, 0.6);
    /* Zinc 900 */
    --bg-panel-strong: rgba(24, 24, 27, 0.85);

    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;

    --primary-accent: #8b5cf6;
    /* Violet */
    --primary-glow: rgba(139, 92, 246, 0.5);

    --secondary-accent: #0ea5e9;
    /* Sky */
    --secondary-glow: rgba(14, 165, 233, 0.5);

    --tertiary-accent: #ec4899;
    /* Pink */

    --border-light: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(139, 92, 246, 0.5);

    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.4;
    animation: float 20s infinite alternate ease-in-out;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--primary-accent) 0%, transparent 70%);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--secondary-accent) 0%, transparent 70%);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 60%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--tertiary-accent) 0%, transparent 70%);
    animation-delay: -10s;
    opacity: 0.2;
}

@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(5%, 5%) scale(1.05);
    }

    66% {
        transform: translate(-5%, 10%) scale(0.95);
    }

    100% {
        transform: translate(10%, -5%) scale(1);
    }
}

/* Typography & Utils */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--text-primary) 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-container .gradient-text {
    background: linear-gradient(135deg, #fff 0%, var(--primary-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hidden {
    display: none !important;
}

/* Modal 使用 opacity/pointer-events 做淡入淡出，覆蓋 .hidden 的 display:none */
.modal-overlay.hidden {
    display: flex !important;
    opacity: 0;
    pointer-events: none;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Layout framework */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Glassmorphism */
.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.glass-panel-strong {
    background: var(--bg-panel-strong);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: sticky;
    top: 1rem;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo i {
    font-size: 1.5rem;
    color: var(--primary-accent);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.25rem;
    border-radius: var(--radius-full);
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--border-light);
    color: var(--text-primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Pages */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.page {
    flex: 1;
    padding: 3rem;
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    margin-bottom: 2.5rem;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Forms */
.dynamic-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 800px;
}

.form-row {
    display: flex;
    gap: 1.5rem;
}

.form-group.half {
    flex: 1;
}

.form-group {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.required {
    color: var(--error);
}

input[type="text"],
textarea,
select {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 1rem;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    outline: none;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

input:focus,
textarea:focus,
select:focus {
    background: rgba(0, 0, 0, 0.4);
    border-color: var(--border-focus);
}

.focus-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
    transition: width 0.4s ease;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    opacity: 0;
}

input:focus~.focus-border,
textarea:focus~.focus-border {
    width: 100%;
    opacity: 1;
}

/* Select & Checkboxes */
.select-wrapper {
    position: relative;
}

.select-wrapper select {
    appearance: none;
    cursor: pointer;
    padding-right: 2.5rem;
}

.select-wrapper i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-secondary);
}

.checkbox-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.custom-checkbox {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    transition: all 0.2s;
    user-select: none;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.custom-checkbox:has(input:checked) {
    border-color: var(--primary-accent);
    background: rgba(139, 92, 246, 0.1);
}

.custom-checkbox:has(input:checked) .checkbox-label {
    color: var(--primary-accent);
}

.custom-checkbox:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

/* Buttons */
.primary-btn {
    background: linear-gradient(135deg, var(--primary-accent) 0%, var(--secondary-accent) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 1.2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--primary-glow);
}

.primary-btn:active {
    transform: translateY(0);
}

.glow-effect::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 60%);
    transform: rotate(45deg);
    opacity: 0;
    transition: opacity 0.3s;
}

.primary-btn:hover::before {
    opacity: 1;
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Calendar Grid */
.header-with-actions {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.calendar-placeholder {
    grid-column: 1 / -1;
    min-height: 400px;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    opacity: 0.5;
    margin-bottom: 1rem;
    display: block;
}

.day-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.day-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-accent);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4), inset 0 0 15px rgba(139, 92, 246, 0.1);
    background: rgba(139, 92, 246, 0.05);
}

.day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.day-num {
    font-weight: 700;
    color: var(--primary-accent);
    font-size: 1.2rem;
}

.day-type {
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
}

.day-topic {
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.day-footer {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-top: auto;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 1;
    transition: opacity 0.3s ease;
}




.modal-content {
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    padding: 2.5rem;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transform: scale(1);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.hidden .modal-content {
    transform: scale(0.95);
}

.close-modal {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.close-modal:hover {
    color: var(--text-primary);
}

.modal-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.date-badge {
    font-weight: 700;
    color: var(--primary-accent);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.post-meta {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.badge {
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.badge-type {
    background: rgba(139, 92, 246, 0.2);
    color: #c4b5fd;
}

.badge-time {
    background: rgba(14, 165, 233, 0.2);
    color: #bae6fd;
}

.time-reason {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Tabs inside Modal */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 1rem;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    font-weight: 500;
    position: relative;
    transition: color 0.2s;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-accent);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-accent);
    box-shadow: 0 0 10px var(--primary-accent);
}

.platform-toggles {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.platform-btn {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.platform-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.platform-btn.active {
    background: var(--border-focus);
    border-color: var(--primary-accent);
    color: white;
}

.content-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    min-height: 200px;
    color: var(--text-primary);
    font-size: 1.05rem;
    line-height: 1.7;
    white-space: pre-wrap;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
    overflow-y: auto;
    max-height: 40vh;
}

.content-box:focus {
    border-color: var(--primary-accent);
}

.data-audit-warn {
    border-bottom: 2px dotted var(--warning);
    background: rgba(245, 158, 11, 0.1);
    cursor: help;
    position: relative;
}

.box-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1rem;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.action-btn.copy-btn:hover {
    border-color: var(--success);
    color: var(--success);
}

/* Audit Panel */
.audit-panel {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--warning);
    padding: 1rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-top: 1.5rem;
}

.audit-header {
    color: var(--warning);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.audit-list {
    margin-left: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.audit-list li {
    margin-bottom: 0.3rem;
}

/* Loader */
.loader {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Tracking Page — Stats */
.tracking-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: border-color 0.3s, transform 0.2s;
}

.stat-card:hover {
    border-color: var(--primary-accent);
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 1.6rem;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card:nth-child(1) .stat-icon {
    background: rgba(244, 63, 94, 0.15);
    color: #fb7185;
}

.stat-card:nth-child(2) .stat-icon {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

.stat-card:nth-child(3) .stat-icon {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
}

.stat-card:nth-child(4) .stat-icon {
    background: rgba(168, 85, 247, 0.15);
    color: #c084fc;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
}

/* Tracking Page — Filters */
.tracking-filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.filter-btn {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

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

.filter-btn.active {
    background: var(--border-focus);
    border-color: var(--primary-accent);
    color: var(--text-primary);
}

/* Tracking Page — Table */
.tracking-table-wrap {
    white-space: normal;
    padding: 0;
    min-height: 0;
    max-height: 60vh;
    overflow-y: auto;
}

.tracking-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.tracking-table thead {
    position: sticky;
    top: 0;
    z-index: 2;
}

.tracking-table th {
    padding: 1rem 1.2rem;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    background: rgba(15, 15, 25, 0.95);
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}

.tracking-table td {
    padding: 0.8rem 1.2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    vertical-align: middle;
}

.tracking-table tbody tr {
    transition: background 0.15s;
}

.tracking-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.tracking-table .day-label {
    font-weight: 600;
    color: var(--primary-accent);
    white-space: nowrap;
    font-size: 0.9rem;
}

.tracking-table .topic-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tracking-input {
    width: 72px;
    padding: 0.5rem 0.6rem;
    text-align: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.tracking-input:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

.tracking-input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.tracking-placeholder {
    padding: 3rem;
    text-align: center;
}

.tracking-table tbody tr.filled .day-label::after {
    content: '✓';
    margin-left: 0.4rem;
    color: var(--success);
    font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        padding: 1rem;
    }

    .page {
        padding: 1.5rem;
    }

    .form-row {
        flex-direction: column;
        gap: 1rem;
    }

    .app-header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
        top: 0;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    }

    .modal-content {
        padding: 1.5rem;
        width: 95%;
        height: auto;
        max-height: 95vh;
    }

    .tracking-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .tracking-table .topic-label {
        max-width: 120px;
    }

    .tracking-input {
        width: 56px;
    }
}