/* ══════════════════════════════════════════════════
   Apple Materials & Vibrancy Design System
   Glow'n Beauty Clinic Dashboard
   ══════════════════════════════════════════════════ */

:root {
    /* ── Surface Materials ── */
    --material-ultra-thin: rgba(20, 20, 20, 0.25);
    --material-thin: rgba(20, 20, 20, 0.35);
    --material-regular: rgba(20, 20, 20, 0.50);
    --material-thick: rgba(20, 20, 20, 0.65);
    --material-chrome: rgba(12, 12, 18, 0.82);

    /* ── Blur Layers ── */
    --blur-sm: blur(16px) saturate(180%);
    --blur-md: blur(24px) saturate(190%);
    --blur-lg: blur(40px) saturate(180%);
    --blur-xl: blur(50px) saturate(180%);

    /* ── Specular Borders ── */
    --border-specular: 1px solid rgba(255, 255, 255, 0.22);
    --border-subtle: 1px solid rgba(255, 255, 255, 0.08);
    --border-divide: 1px solid rgba(255, 255, 255, 0.06);

    /* ── Volumetric Shadows ── */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 32px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.35);
    --shadow-accent: 0 4px 20px rgba(124, 58, 237, 0.25);

    /* ── Geometry (Squircle Radii) ── */
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;

    /* ── Typography Vibrancy ── */
    --text-primary: rgba(255, 255, 255, 0.92);
    --text-secondary: rgba(255, 255, 255, 0.55);
    --text-tertiary: rgba(255, 255, 255, 0.32);

    /* ── Accent Palette ── */
    --accent: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #6366f1 100%);

    /* ── Fluid Timing ── */
    --ease: cubic-bezier(0.25, 0.8, 0.25, 1);
    --duration: 300ms;
}

/* ═══════════════ Base Reset ═══════════════ */

* {
    font-family: 'Cairo', -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: #0a0a0f;
    background-image:
        radial-gradient(ellipse at 80% 5%, rgba(124, 58, 237, 0.06) 0%, transparent 55%),
        radial-gradient(ellipse at 15% 95%, rgba(99, 102, 241, 0.04) 0%, transparent 55%);
    color: var(--text-primary);
    min-height: 100vh;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.15); }

/* ═══════════════ Text Vibrancy ═══════════════ */

.text-v-primary { color: var(--text-primary); }
.text-v-secondary { color: var(--text-secondary); }
.text-v-tertiary { color: var(--text-tertiary); }

/* ═══════════════ Material Surfaces ═══════════════ */

.material-card {
    background: var(--material-thin);
    backdrop-filter: var(--blur-md);
    -webkit-backdrop-filter: var(--blur-md);
    border: var(--border-specular);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all var(--duration) var(--ease);
}

.material-card:hover {
    background: rgba(20, 20, 20, 0.42);
    backdrop-filter: blur(24px) saturate(220%);
    -webkit-backdrop-filter: blur(24px) saturate(220%);
}

.material-panel {
    background: var(--material-thin);
    backdrop-filter: var(--blur-md);
    -webkit-backdrop-filter: var(--blur-md);
    border: var(--border-specular);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--duration) var(--ease);
}

.material-elevated {
    background: rgba(22, 22, 28, 0.92);
    backdrop-filter: var(--blur-xl);
    -webkit-backdrop-filter: var(--blur-xl);
    border: var(--border-specular);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
}

/* ═══════════════ Sidebar ═══════════════ */

.sidebar {
    background: var(--material-chrome);
    backdrop-filter: var(--blur-xl);
    -webkit-backdrop-filter: var(--blur-xl);
    border-left: var(--border-subtle);
    transition: transform 0.5s var(--ease);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: var(--border-divide);
}

.sidebar-footer {
    border-top: var(--border-divide);
}

/* ═══════════════ Navigation ═══════════════ */

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--duration) var(--ease);
    text-decoration: none;
    cursor: pointer;
    border: none;
    background: transparent;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(124, 58, 237, 0.12);
    color: rgba(167, 139, 250, 0.95);
}

.nav-link-danger { color: #f87171 !important; }
.nav-link-danger:hover { background: rgba(248, 113, 113, 0.08) !important; }

/* ═══════════════ Buttons ═══════════════ */

.btn-accent {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent-gradient);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
}

.btn-accent:hover {
    box-shadow: var(--shadow-accent);
    transform: translateY(-1px);
    filter: brightness(1.1);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: var(--border-subtle);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
}

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

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(239, 68, 68, 0.08);
    color: #f87171;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(239, 68, 68, 0.12);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

.btn-danger:hover { background: rgba(239, 68, 68, 0.15); }

.btn-sm { padding: 6px 14px; font-size: 0.75rem; }

/* ═══════════════ Inputs ═══════════════ */

.input-apple {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 10px 16px;
    font-size: 0.875rem;
    transition: all var(--duration) var(--ease);
    outline: none;
}

.input-apple::placeholder { color: var(--text-tertiary); }

.input-apple:focus {
    border-color: rgba(124, 58, 237, 0.5);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
    background: rgba(255, 255, 255, 0.07);
}

select.input-apple {
    appearance: none;
    padding-left: 36px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='rgba(255,255,255,0.35)' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 12px center;
    background-size: 16px;
    cursor: pointer;
}

/* ═══════════════ Tables ═══════════════ */

.apple-table {
    width: 100%;
    border-collapse: collapse;
}

.apple-table thead th {
    color: var(--text-tertiary);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 14px 20px;
    text-align: right;
    border-bottom: var(--border-divide);
}

.apple-table tbody tr {
    transition: background 200ms var(--ease);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.apple-table tbody tr:last-child { border-bottom: none; }
.apple-table tbody tr:hover { background: rgba(255, 255, 255, 0.025); }

.apple-table tbody td {
    padding: 14px 20px;
    font-size: 0.875rem;
}

/* ═══════════════ Modals ═══════════════ */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 0;
    transition: opacity 0.3s var(--ease);
    pointer-events: none;
}

.modal-backdrop.show {
    opacity: 1;
    pointer-events: auto;
}

.modal-surface {
    background: rgba(22, 22, 28, 0.92);
    backdrop-filter: blur(50px) saturate(200%);
    -webkit-backdrop-filter: blur(50px) saturate(200%);
    border: var(--border-specular);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 32px;
    max-width: 520px;
    width: 100%;
    transform: scale(0.96);
    transition: transform 0.3s var(--ease);
}

.modal-backdrop.show .modal-surface { transform: scale(1); }

/* ═══════════════ Badges ═══════════════ */

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ═══════════════ Stat Cards ═══════════════ */

.stat-card {
    transition: all var(--duration) var(--ease);
}

.stat-card:hover {
    transform: translateY(-2px);
    background: rgba(20, 20, 20, 0.42);
}

/* ═══════════════ Mobile Header ═══════════════ */

.mobile-header {
    background: rgba(12, 12, 18, 0.85);
    backdrop-filter: var(--blur-md);
    -webkit-backdrop-filter: var(--blur-md);
    border-bottom: var(--border-subtle);
}

/* ═══════════════ Tabs ═══════════════ */

.tabs-container {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    padding: 3px;
    gap: 2px;
}

.tab-btn {
    padding: 8px 20px;
    border-radius: calc(var(--radius-sm) - 2px);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

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

.tab-btn.active {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.25);
}

/* ═══════════════ Pagination ═══════════════ */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 32px;
}

.page-btn {
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 500;
    border: var(--border-subtle);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.page-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.page-btn.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.25);
}

.page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ═══════════════ Loading & Empty States ═══════════════ */

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(124, 58, 237, 0.12);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════ Animations ═══════════════ */

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -25px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes orbFloatReverse {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-25px, 20px) scale(0.95); }
    66% { transform: translate(20px, -25px) scale(1.05); }
}

.animate-in {
    animation: fadeInUp 0.5s var(--ease) both;
}

.delay-1 { animation-delay: 50ms; }
.delay-2 { animation-delay: 100ms; }
.delay-3 { animation-delay: 150ms; }
.delay-4 { animation-delay: 200ms; }
.delay-5 { animation-delay: 250ms; }

.login-orb { animation: orbFloat 10s ease-in-out infinite; }
.login-orb-reverse { animation: orbFloatReverse 12s ease-in-out infinite; }

/* ═══════════════ Login Page ═══════════════ */

.login-card {
    animation: fadeInUp 0.7s var(--ease) both;
}

.login-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 12px 16px 12px 44px;
    font-size: 0.9rem;
    transition: all var(--duration) var(--ease);
    outline: none;
}

.login-input::placeholder { color: var(--text-tertiary); }

.login-input:focus {
    border-color: rgba(124, 58, 237, 0.5);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
    background: rgba(255, 255, 255, 0.07);
}

.login-btn {
    width: 100%;
    background: var(--accent-gradient);
    color: white;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 13px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.35);
    transform: translateY(-1px);
}

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.login-btn::after {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
    transition: left 0.5s ease;
}

.login-btn:hover::after { left: 100%; }

/* ═══════════════ Accent Card Top Border ═══════════════ */

.accent-top-purple { border-top: 2px solid rgba(124, 58, 237, 0.5); }
.accent-top-indigo { border-top: 2px solid rgba(99, 102, 241, 0.5); }
.accent-top-blue { border-top: 2px solid rgba(59, 130, 246, 0.5); }
.accent-top-amber { border-top: 2px solid rgba(245, 158, 11, 0.5); }
.accent-top-green { border-top: 2px solid rgba(34, 197, 94, 0.5); }

/* ═══════════════ Profile Page ═══════════════ */

.cover-image {
    position: relative;
    height: 200px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.cover-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10,10,15,0.8) 0%, transparent 60%);
}

/* ═══════════════ Star Rating ═══════════════ */

.star-filled { color: #facc15; fill: #facc15; }
.star-empty { color: rgba(255, 255, 255, 0.1); fill: none; }