/* ChairTime Shared Design System */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --ink: #0a0a0a;
    --cream: #faf8f5;
    --gold: #c4975a;
    --gold-light: #e8d5b8;
    --warm-gray: #8a8279;
    --soft-white: #f2ede7;
    --blush: #f5ebe3;
    --green: #4a8c6f;
    --green-light: #e8f5e9;
    --red: #c45a5a;
    --red-light: #fde8e8;
    --blue: #5a7ec4;
    --blue-light: #e8eef5;
}

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--cream);
    color: var(--ink);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.grain {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    z-index: 999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* NAV */
.app-nav {
    padding: 1.5rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gold-light);
    background: var(--cream);
    position: sticky;
    top: 0;
    z-index: 100;
}
.logo {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: -0.02em;
    color: var(--ink);
    text-decoration: none;
}
.logo span { color: var(--gold); }

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}
.nav-links a {
    font-size: 0.85rem;
    color: var(--warm-gray);
    text-decoration: none;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--gold);
}

/* PAGE CONTAINER */
.page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 4rem;
}

.page-header {
    margin-bottom: 3rem;
}
.page-label {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    font-weight: 500;
    margin-bottom: 0.75rem;
}
.page-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}
.page-subtitle {
    font-size: 1.05rem;
    color: var(--warm-gray);
    margin-top: 0.75rem;
    font-weight: 300;
    line-height: 1.6;
}

/* CARDS */
.card {
    background: white;
    border: 1px solid var(--gold-light);
    border-radius: 12px;
    padding: 2rem;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.card-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* FORM ELEMENTS */
.form-group {
    margin-bottom: 1.5rem;
}
.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 0.5rem;
}
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--gold-light);
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.95rem;
    color: var(--ink);
    background: white;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(196, 151, 90, 0.1);
}
.form-textarea {
    min-height: 100px;
    resize: vertical;
}
.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--warm-gray);
    opacity: 0.6;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    border: none;
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}
.btn-primary {
    background: var(--ink);
    color: var(--cream);
}
.btn-primary:hover {
    background: #1a1a1a;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(10, 10, 10, 0.15);
}
.btn-gold {
    background: var(--gold);
    color: white;
}
.btn-gold:hover {
    background: #b38849;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(196, 151, 90, 0.3);
}
.btn-outline {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--gold-light);
}
.btn-outline:hover {
    border-color: var(--gold);
    color: var(--gold);
}
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* BADGES */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.badge-new { background: var(--blue-light); color: var(--blue); }
.badge-responded { background: var(--gold-light); color: var(--gold); }
.badge-booked { background: var(--green-light); color: var(--green); }
.badge-confirmed { background: var(--green-light); color: var(--green); }
.badge-cancelled { background: var(--red-light); color: var(--red); }
.badge-needs_manual_response { background: var(--red-light); color: var(--red); }

/* STAT CARDS */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}
.stat-card {
    background: white;
    border: 1px solid var(--gold-light);
    border-radius: 12px;
    padding: 1.5rem;
}
.stat-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--warm-gray);
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--ink);
}
.stat-value.gold { color: var(--gold); }

/* TABLE */
.table-wrapper {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--warm-gray);
    font-weight: 500;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gold-light);
}
td {
    padding: 1rem;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--soft-white);
    vertical-align: top;
}
tr:last-child td {
    border-bottom: none;
}
tr:hover td {
    background: var(--blush);
}

/* GRID LAYOUTS */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* ALERTS */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}
.alert-success {
    background: var(--green-light);
    color: var(--green);
    border: 1px solid rgba(74, 140, 111, 0.2);
}
.alert-error {
    background: var(--red-light);
    color: var(--red);
    border: 1px solid rgba(196, 90, 90, 0.2);
}

/* AI RESPONSE CARD */
.ai-response {
    background: var(--blush);
    border: 1px solid var(--gold-light);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
}
.ai-response-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold);
    font-weight: 500;
    margin-bottom: 0.75rem;
}
.ai-response-text {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--ink);
    white-space: pre-wrap;
}

/* EMPTY STATE */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--warm-gray);
}
.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}
.empty-state h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.5rem;
}
.empty-state p {
    font-size: 0.9rem;
    font-weight: 300;
}

/* TIME SLOTS GRID */
.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.slot-btn {
    padding: 0.6rem;
    border: 1px solid var(--gold-light);
    border-radius: 8px;
    background: white;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--ink);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}
.slot-btn:hover {
    border-color: var(--gold);
    background: var(--blush);
}
.slot-btn.selected {
    background: var(--gold);
    color: white;
    border-color: var(--gold);
}

/* LOADING */
.loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--warm-gray);
    font-size: 0.9rem;
}
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gold-light);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* TABS */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--gold-light);
    margin-bottom: 2rem;
}
.tab {
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--warm-gray);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: 'DM Sans', sans-serif;
}
.tab:hover {
    color: var(--ink);
}
.tab.active {
    color: var(--gold);
    border-bottom-color: var(--gold);
}

/* SUCCESS PAGE */
.success-container {
    max-width: 600px;
    margin: 4rem auto;
    text-align: center;
}
.success-icon {
    width: 80px;
    height: 80px;
    background: var(--green-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 2rem;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .app-nav { padding: 1rem 1.5rem; }
    .nav-links { gap: 1rem; }
    .nav-links a { font-size: 0.75rem; }
    .page { padding: 2rem 1.5rem; }
    .grid-2 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}