/* ==========================================================================
   TeamSchedule 全站統一設計系統與 Theme Tokens
   (基於 首頁設計參考.html 與 前端色彩與深淺色模式_AI設計規範.md)
   ========================================================================== */

:root,
[data-bs-theme="light"] {
    color-scheme: light;
    --canvas: #f5f7fa;
    --surface-1: #ffffff;
    --surface-2: #ffffff;
    --surface-3: #eef2f6;
    --surface-raised: #ffffff;
    --text-primary: #17202a;
    --text-secondary: #3f4b59;
    --text-muted: #667382;
    --text-disabled: #929ca7;
    --text-on-accent: #ffffff;
    --border-subtle: #d9e0e7;
    --border-strong: #aeb9c5;
    --accent: #0b62d6;
    --accent-hover: #094fae;
    --accent-active: #073f8b;
    --accent-soft: #e7f0ff;
    --success: #18794e;
    --success-soft: #e5f6ed;
    --warning: #8a5700;
    --warning-soft: #fff3d6;
    --danger: #b4232c;
    --danger-soft: #fdebec;
    --info: #096b83;
    --info-soft: #e4f5fa;
    --focus-ring: #2563eb;
    --shadow-color: 16 24 40;
    --shadow-sm: 0 1px 3px rgb(16 24 40 / 0.12);
    --shadow-md: 0 14px 36px rgb(16 24 40 / 0.14);

    --calendar-available-fill: rgb(24 121 78 / 0.34);
    --calendar-available-line: #18794e;
    --calendar-available-text: #0f5132;

    --calendar-busy-fill: rgb(180 35 44 / 0.30);
    --calendar-busy-line: #b4232c;
    --calendar-busy-text: #842029;

    --calendar-maybe-fill: rgb(138 87 0 / 0.30);
    --calendar-maybe-line: #8a5700;
    --calendar-maybe-text: #664d03;

    --calendar-unset-fill: rgb(102 115 130 / 0.18);
    --calendar-unset-line: #667382;
    --calendar-unset-text: #41464b;
}

[data-bs-theme="dark"] {
    color-scheme: dark;
    --canvas: #0f141b;
    --surface-1: #151b23;
    --surface-2: #1b232d;
    --surface-3: #24303d;
    --surface-raised: #293645;
    --text-primary: #f4f7fb;
    --text-secondary: #c7d0db;
    --text-muted: #9eabb9;
    --text-disabled: #707d8b;
    --text-on-accent: #ffffff;
    --border-subtle: #344150;
    --border-strong: #526274;
    --accent: #74a9ff;
    --accent-hover: #91bbff;
    --accent-active: #a9c9ff;
    --accent-soft: #19385f;
    --success: #63d69b;
    --success-soft: #143b2b;
    --warning: #f2c464;
    --warning-soft: #493814;
    --danger: #ff8b93;
    --danger-soft: #4b2025;
    --info: #67d2e8;
    --info-soft: #133d48;
    --focus-ring: #8ab4ff;
    --shadow-color: 0 0 0;
    --shadow-sm: 0 1px 3px rgb(0 0 0 / 0.35);
    --shadow-md: 0 16px 40px rgb(0 0 0 / 0.45);

    --calendar-available-fill: rgb(99 214 155 / 0.27);
    --calendar-available-line: #63d69b;
    --calendar-available-text: #63d69b;

    --calendar-busy-fill: rgb(255 139 147 / 0.25);
    --calendar-busy-line: #ff8b93;
    --calendar-busy-text: #ff8b93;

    --calendar-maybe-fill: rgb(242 196 100 / 0.25);
    --calendar-maybe-line: #f2c464;
    --calendar-maybe-text: #f2c464;

    --calendar-unset-fill: rgb(158 171 185 / 0.16);
    --calendar-unset-line: #9eabb9;
    --calendar-unset-text: #c7d0db;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 10% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 32rem),
        var(--canvas);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif;
    transition: background-color 0.25s ease, color 0.25s ease;
}

a {
    color: var(--accent);
    text-underline-offset: 0.18em;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
}

:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   App Navbar & Brand
   -------------------------------------------------------------------------- */
.app-navbar {
    background: color-mix(in srgb, var(--surface-1) 88%, transparent);
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.75rem;
    color: white;
    background: linear-gradient(145deg, var(--accent), #7357ff);
    box-shadow: var(--shadow-sm);
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary) !important;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    padding: 4.5rem 0 3rem;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.75rem;
    border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border-subtle));
    border-radius: 999px;
    color: var(--accent);
    background: var(--accent-soft);
    font-weight: 700;
    font-size: 0.875rem;
}

.hero-title {
    max-width: 14ch;
    margin: 1.25rem 0;
    font-size: clamp(2.3rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.045em;
    color: var(--text-primary);
}

.hero-copy {
    max-width: 38rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

/* --------------------------------------------------------------------------
   Buttons & Badges
   -------------------------------------------------------------------------- */
.btn-app-primary {
    color: white !important;
    background: var(--accent) !important;
    border-color: var(--accent) !important;
}

.btn-app-primary:hover,
.btn-app-primary:active {
    color: white !important;
    background: var(--accent-hover) !important;
    border-color: var(--accent-hover) !important;
}

.btn-app-secondary {
    color: var(--text-primary) !important;
    background: var(--surface-2) !important;
    border-color: var(--border-strong) !important;
}

.btn-app-secondary:hover {
    color: var(--text-primary) !important;
    background: var(--surface-3) !important;
    border-color: var(--border-strong) !important;
}

/* --------------------------------------------------------------------------
   Cards & Previews
   -------------------------------------------------------------------------- */
.app-card {
    background: var(--surface-2) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    color: var(--text-primary);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.preview-card {
    position: relative;
    overflow: hidden;
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
}

.preview-card::before {
    position: absolute;
    top: -6rem;
    right: -6rem;
    width: 14rem;
    height: 14rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    content: "";
}

.mini-toolbar,
.section-heading {
    position: relative;
    z-index: 1;
}

.calendar-preview {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.calendar-day {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    border-radius: 1rem;
    background: var(--surface-1);
}

.calendar-day__header {
    min-height: 5.75rem;
    padding: 0.85rem;
    background: var(--surface-1);
}

.calendar-day__date {
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.calendar-day__meta {
    margin-top: 0.45rem;
    color: var(--text-muted);
    font-size: 0.78rem;
}

.calendar-day__fill {
    display: flex;
    height: 7rem;
    flex-direction: column;
    justify-content: flex-end;
}

.fill-unset { background: var(--calendar-unset-fill); }
.fill-busy { background: var(--calendar-busy-fill); }
.fill-maybe { background: var(--calendar-maybe-fill); }
.fill-available { background: var(--calendar-available-fill); }

.calendar-fill-container {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    border-radius: 12px;
}

.fill-segment {
    width: 100%;
}

.team-calendar-day-card > div:not(.calendar-fill-container) {
    position: relative;
    z-index: 1;
}

.hover-lift,
.transition-hover {
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.hover-lift:hover,
.transition-hover:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md) !important;
}

.tracking-wider {
    letter-spacing: 0.1em;
}

.recommended {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
}

.calendar-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.calendar-scroll .calendar-grid {
    min-width: 560px;
}

.calendar-scroll .team-calendar-grid {
    min-width: 700px;
}

.recommended .calendar-day__date::after {
    margin-left: 0.4rem;
    color: var(--accent);
    content: "★";
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.legend-dot {
    width: 0.7rem;
    height: 0.7rem;
    border-radius: 999px;
}

.section-block {
    padding: 2.5rem 0;
}

.section-title {
    margin-bottom: 0.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-secondary);
}

.quick-card {
    height: 100%;
    padding: 1.3rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.quick-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong) !important;
}

.quick-icon {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.85rem;
    color: var(--accent);
    background: var(--accent-soft);
    font-size: 1.25rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-primary);
}

.muted {
    color: var(--text-muted) !important;
}

.activity-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-subtle);
}

.activity-item:last-child {
    border-bottom: 0;
}

.activity-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 0 0 3.25rem;
    height: 3.25rem;
    border-radius: 0.9rem;
    color: var(--accent);
    background: var(--accent-soft);
    font-weight: 800;
    line-height: 1.1;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.status-open {
    color: var(--warning);
    background: var(--warning-soft);
}

.status-confirmed {
    color: var(--success);
    background: var(--success-soft);
}

.theme-menu .dropdown-menu {
    color: var(--text-primary) !important;
    background: var(--surface-2) !important;
    border-color: var(--border-subtle) !important;
}

.theme-menu .dropdown-item {
    color: var(--text-primary) !important;
}

.theme-menu .dropdown-item:hover {
    background: var(--surface-3) !important;
}

footer {
    margin-top: 3rem;
    padding: 2rem 0;
    color: var(--text-muted);
    border-top: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   Calendar Grids & Badges (Personal & Team Detail Views)
   -------------------------------------------------------------------------- */
.calendar-day-header,
.team-calendar-day-header {
    text-align: center;
    font-weight: 600;
    padding: 10px;
    background-color: var(--surface-1);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    color: var(--text-secondary);
}

.calendar-day-card,
.team-calendar-day-card {
    background-color: var(--surface-2);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.bg-available {
    background-color: var(--success-soft) !important;
    color: var(--calendar-available-text) !important;
    border: 1px solid var(--calendar-available-line) !important;
}

.bg-busy {
    background-color: var(--danger-soft) !important;
    color: var(--calendar-busy-text) !important;
    border: 1px solid var(--calendar-busy-line) !important;
}

.bg-maybe {
    background-color: var(--warning-soft) !important;
    color: var(--calendar-maybe-text) !important;
    border: 1px solid var(--calendar-maybe-line) !important;
}

.bg-unset {
    background-color: var(--surface-3) !important;
    color: var(--calendar-unset-text) !important;
    border: 1px solid var(--calendar-unset-line) !important;
}

.text-dark {
    color: var(--text-primary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.text-primary {
    color: var(--accent) !important;
}

.bg-body-tertiary,
.bg-light {
    background-color: var(--surface-3) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-subtle) !important;
}

.table-light {
    background-color: var(--surface-3) !important;
    color: var(--text-primary) !important;
}

.form-control,
.form-select {
    background-color: var(--surface-1) !important;
    border-color: var(--border-strong) !important;
    color: var(--text-primary) !important;
}

.form-control::placeholder {
    color: var(--text-muted) !important;
    opacity: 1;
}

.form-control:focus,
.form-select:focus {
    color: var(--text-primary) !important;
    background-color: var(--surface-1) !important;
    border-color: var(--focus-ring) !important;
    box-shadow: 0 0 0 0.25rem rgb(37 99 235 / 0.2) !important;
}

.validation-summary-valid {
    display: none !important;
}

@media (max-width: 991.98px) {
    .hero {
        padding-top: 3.5rem;
    }

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

@media (max-width: 575.98px) {
    .calendar-preview {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2.5rem;
    }
}