/* ============================================================
   design-tokens.css — Unified design system (Apple/Stripe dark)
   All tokens prefixed --ds-  ·  Utility classes prefixed .ds-
   ============================================================ */

/* --- Design tokens (global) --- */
:root {
    --ds-bg:            #0d1117;
    --ds-surface:       #161b22;
    --ds-surface-hover: #1c2333;
    --ds-border:        rgba(255,255,255,.08);
    --ds-border-hover:  rgba(255,255,255,.14);

    --ds-text:          #e6edf3;
    --ds-text-muted:    #8b949e;
    --ds-text-dim:      #484f58;

    --ds-accent:        #58a6ff;
    --ds-green:         #34c759;
    --ds-red:           #dc3d4a;
    --ds-yellow:        #f0c000;

    --ds-radius:        12px;
    --ds-radius-sm:     8px;
    --ds-radius-xs:     6px;
    --ds-shadow:        0 1px 3px rgba(0,0,0,.24), 0 4px 14px rgba(0,0,0,.18);
    --ds-shadow-hover:  0 4px 12px rgba(0,0,0,.35), 0 8px 24px rgba(0,0,0,.22);
    --ds-transition:    .2s cubic-bezier(.4,0,.2,1);
}

/* --- Animations --- */
@keyframes ds-fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes ds-slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: none; }
}

/* --- Card utility --- */
.ds-card {
    background: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius);
    box-shadow: var(--ds-shadow);
    animation: ds-fadeIn .45s ease;
}
.ds-card:hover {
    border-color: var(--ds-border-hover);
}

/* Card with left status border */
.ds-card-status {
    background: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-left: 3px solid var(--ds-green);
    border-radius: var(--ds-radius);
    box-shadow: var(--ds-shadow);
    transition: background var(--ds-transition),
                border-color var(--ds-transition),
                box-shadow var(--ds-transition),
                transform var(--ds-transition);
    animation: ds-slideUp .4s ease both;
}
.ds-card-status:hover {
    background: var(--ds-surface-hover);
    border-color: var(--ds-border-hover);
    box-shadow: var(--ds-shadow-hover);
    transform: translateY(-2px);
}
.ds-card-status.--occupied { border-left-color: var(--ds-red); }
.ds-card-status.--waiting  { border-left-color: var(--ds-yellow); }
.ds-card-status.--success  { border-left-color: var(--ds-green); }
.ds-card-status.--accent   { border-left-color: var(--ds-accent); }

/* --- Badge utility --- */
.ds-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: var(--ds-radius-xs);
    text-transform: uppercase;
    letter-spacing: .3px;
    display: inline-block;
}
.ds-badge-green {
    background: rgba(52,199,89,.12);
    color: var(--ds-green);
}
.ds-badge-red {
    background: rgba(220,61,74,.12);
    color: var(--ds-red);
}
.ds-badge-yellow {
    background: rgba(240,192,0,.12);
    color: var(--ds-yellow);
}
.ds-badge-accent {
    background: rgba(88,166,255,.12);
    color: var(--ds-accent);
}
.ds-badge-muted {
    background: rgba(139,148,158,.12);
    color: var(--ds-text-muted);
}

/* --- Button utilities --- */
.ds-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    font-weight: 600;
    font-size: 14px;
    border: none;
    border-radius: var(--ds-radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--ds-transition),
                transform var(--ds-transition),
                box-shadow var(--ds-transition);
}
.ds-btn:hover {
    transform: translateY(-1px);
    text-decoration: none;
}

.ds-btn-primary {
    background: var(--ds-accent);
    color: #fff;
}
.ds-btn-primary:hover {
    background: #79b8ff;
    color: #fff;
    box-shadow: 0 4px 12px rgba(88,166,255,.3);
}

.ds-btn-danger {
    background: var(--ds-red);
    color: #fff;
}
.ds-btn-danger:hover {
    background: #e5555f;
    color: #fff;
    box-shadow: 0 4px 12px rgba(220,61,74,.3);
}

.ds-btn-success {
    background: var(--ds-green);
    color: #fff;
}
.ds-btn-success:hover {
    background: #4dd66c;
    color: #fff;
    box-shadow: 0 4px 12px rgba(52,199,89,.3);
}

.ds-btn-ghost {
    background: rgba(255,255,255,.06);
    color: var(--ds-text);
    border: 1px solid var(--ds-border);
}
.ds-btn-ghost:hover {
    background: rgba(255,255,255,.1);
    color: var(--ds-text);
    border-color: var(--ds-border-hover);
}

/* --- Form inputs --- */
.ds-input,
.ds-select {
    background: rgba(0,0,0,.25);
    color: var(--ds-text);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    transition: border-color var(--ds-transition),
                box-shadow var(--ds-transition);
}
.ds-input::placeholder { color: var(--ds-text-dim); }
.ds-input:focus,
.ds-select:focus {
    border-color: var(--ds-accent);
    box-shadow: 0 0 0 3px rgba(88,166,255,.15);
    outline: none;
}

/* --- Table utility --- */
.ds-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.ds-table thead {
    background: rgba(0,0,0,.2);
}
.ds-table th {
    padding: 12px;
    text-align: left;
    color: var(--ds-text-muted);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .5px;
    border-bottom: 1px solid var(--ds-border);
    white-space: nowrap;
}
.ds-table td {
    padding: 12px;
    color: var(--ds-text);
    border-bottom: 1px solid rgba(255,255,255,.04);
    vertical-align: middle;
}
.ds-table tbody tr:hover {
    background: rgba(255,255,255,.03);
}
.ds-table tbody tr:last-child td {
    border-bottom: none;
}

/* --- Summary bar utility --- */
.ds-summary {
    background: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius);
    padding: 10px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    box-shadow: var(--ds-shadow);
    animation: ds-fadeIn .45s ease;
}

/* --- Page wrapper utility --- */
.ds-page {
    padding: 12px 16px;
    max-width: 1400px;
    margin: 0 auto;
}

/* --- Text color utilities --- */
.ds-text         { color: var(--ds-text); }
.ds-text-muted   { color: var(--ds-text-muted); }
.ds-text-accent  { color: var(--ds-accent); }
.ds-text-green   { color: var(--ds-green); }
.ds-text-red     { color: var(--ds-red); }
.ds-text-yellow  { color: var(--ds-yellow); }

/* --- Link utility --- */
.ds-link {
    color: var(--ds-accent);
    text-decoration: none;
    transition: color var(--ds-transition);
}
.ds-link:hover {
    color: #79b8ff;
    text-decoration: underline;
}

/* --- Empty state utility --- */
.ds-empty {
    text-align: center;
    padding: 48px 20px;
    animation: ds-fadeIn .5s ease;
}
.ds-empty i {
    font-size: 48px;
    color: var(--ds-text-dim);
}
.ds-empty p {
    color: var(--ds-text-muted);
    margin-top: 14px;
    font-size: 15px;
}

/* === Mobile shields === */
@media (max-width: 768px) {
    .ds-page { padding: 8px 10px; }

    .ds-btn {
        min-height: 44px;
        font-size: 15px;
    }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
    .ds-card,
    .ds-card-status,
    .ds-summary,
    .ds-empty {
        animation: none;
    }
    .ds-card-status,
    .ds-btn {
        transition-duration: 0s;
    }
}