/* ═══════════════════════════════════════════════════════
   DENTAL STUDIO PRO - Design System
   Clean UI · Google Font Inter · Slate Palette
   ═══════════════════════════════════════════════════════ */

/* ── CSS Variables ──────────────────────────────────── */
:root {
    /* Slate Palette */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    /* Accent */
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #dbeafe;
    --primary-dark: #1d4ed8;

    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #06b6d4;

    /* Odontogram Colors */
    --odo-preexisting: #ef4444;
    --odo-treatment: #3b82f6;

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --topbar-height: 64px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-sm: 6px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);

    /* Transitions */
    --transition: all .2s cubic-bezier(.4,0,.2,1);
    --transition-slow: all .35s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & Base ───────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--slate-100);
    color: var(--slate-800);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

.hidden { display: none !important; }

/* ── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--slate-300); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--slate-400); }


/* ═══════════════════════════════════════════════════════
   LOGIN SCREEN
   ═══════════════════════════════════════════════════════ */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-800) 50%, #1e3a5f 100%);
    position: relative;
    overflow: hidden;
}

.login-screen::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: pulse-glow 8s ease-in-out infinite;
}

.login-screen::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16,185,129,.1) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation: pulse-glow 6s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: .6; }
    50% { transform: scale(1.1); opacity: 1; }
}

.login-container {
    background: rgba(255,255,255,.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-lg);
    padding: 3rem;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: fadeInUp .6s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-brand {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-logo {
    font-size: 3.5rem;
    margin-bottom: .5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.login-brand h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    letter-spacing: -.02em;
}

.login-brand h1 span {
    background: linear-gradient(135deg, var(--primary), var(--info));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-brand p {
    color: var(--slate-400);
    font-size: .9rem;
    margin-top: .25rem;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form label {
    display: block;
    color: var(--slate-300);
    font-size: .85rem;
    font-weight: 500;
    margin-bottom: .4rem;
}

.login-form input {
    width: 100%;
    padding: .75rem 1rem;
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius);
    color: white;
    font-size: .95rem;
    transition: var(--transition);
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255,255,255,.1);
    box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}

.login-form input::placeholder { color: var(--slate-500); }

.login-error {
    color: var(--danger);
    font-size: .85rem;
    text-align: center;
    margin-top: 1rem;
    min-height: 1.2rem;
}


/* ═══════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem 1.2rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: .875rem;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-secondary {
    background: var(--slate-200);
    color: var(--slate-700);
}
.btn-secondary:hover { background: var(--slate-300); }

.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #059669; }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }

.btn-ghost {
    background: transparent;
    color: var(--slate-600);
    border: 1px solid var(--slate-200);
}
.btn-ghost:hover { background: var(--slate-100); border-color: var(--slate-300); }

.btn-sm { padding: .4rem .8rem; font-size: .8rem; }
.btn-block { width: 100%; justify-content: center; padding: .85rem; font-size: 1rem; }
.btn-icon { padding: .5rem; border-radius: var(--radius-sm); }


/* ═══════════════════════════════════════════════════════
   APP LAYOUT
   ═══════════════════════════════════════════════════════ */
.app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ── Sidebar ────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--slate-900);
    color: white;
    display: flex;
    flex-direction: column;
    transition: var(--transition-slow);
    z-index: 100;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.brand-icon { font-size: 1.8rem; }
.brand-text { font-size: 1.1rem; font-weight: 700; letter-spacing: -.02em; }

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-section { margin-bottom: 1rem; }

.nav-label {
    display: block;
    padding: .5rem 1.5rem;
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--slate-500);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .7rem 1.5rem;
    color: var(--slate-400);
    font-size: .9rem;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-item:hover {
    color: white;
    background: rgba(255,255,255,.05);
}

.nav-item.active {
    color: white;
    background: rgba(59,130,246,.15);
    border-left-color: var(--primary);
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255,255,255,.06);
    display: flex;
    align-items: center;
    gap: .5rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: .6rem;
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--info));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .85rem;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-name {
    font-size: .85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: .7rem;
    color: var(--slate-500);
    text-transform: capitalize;
}

.btn-logout {
    background: none;
    border: none;
    color: var(--slate-500);
    padding: .4rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-logout:hover { color: var(--danger); background: rgba(239,68,68,.1); }
.btn-logout svg { width: 18px; height: 18px; }


/* ── Main Content ───────────────────────────────────── */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* ── Topbar ─────────────────────────────────────────── */
.topbar {
    height: var(--topbar-height);
    background: white;
    border-bottom: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.5rem;
    flex-shrink: 0;
}

.btn-menu {
    display: none;
    background: none;
    border: none;
    color: var(--slate-600);
    padding: .4rem;
}
.btn-menu svg { width: 22px; height: 22px; }

.omnibox {
    flex: 1;
    max-width: 500px;
    display: flex;
    align-items: center;
    gap: .5rem;
    background: var(--slate-100);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius);
    padding: 0 .75rem;
    transition: var(--transition);
    position: relative;
}

.omnibox:focus-within {
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(59,130,246,.1);
}

.omnibox svg { width: 18px; height: 18px; color: var(--slate-400); flex-shrink: 0; }

.omnibox input {
    flex: 1;
    border: none;
    background: transparent;
    padding: .6rem 0;
    font-size: .9rem;
    color: var(--slate-800);
}
.omnibox input:focus { outline: none; }
.omnibox input::placeholder { color: var(--slate-400); }

.omnibox-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-height: 320px;
    overflow-y: auto;
    display: none;
    z-index: 200;
}

.omnibox-results.visible { display: block; }

.omnibox-result {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1rem;
    cursor: pointer;
    transition: var(--transition);
}
.omnibox-result:hover { background: var(--slate-50); }
.omnibox-result .result-type {
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-light);
    padding: .15rem .5rem;
    border-radius: 4px;
    flex-shrink: 0;
}
.omnibox-result .result-label { font-weight: 500; font-size: .9rem; }
.omnibox-result .result-detail { font-size: .8rem; color: var(--slate-500); margin-left: auto; }

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: auto;
}

.topbar-date {
    font-size: .85rem;
    color: var(--slate-500);
    font-weight: 500;
}


/* ── Page Container ─────────────────────────────────── */
.page-container {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}


/* ═══════════════════════════════════════════════════════
   PAGE HEADERS & CARDS
   ═══════════════════════════════════════════════════════ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--slate-900);
    letter-spacing: -.02em;
}

.page-header-actions {
    display: flex;
    gap: .5rem;
}

.card {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--slate-100);
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--slate-800);
}


/* ═══════════════════════════════════════════════════════
   STAT CARDS (Dashboard)
   ═══════════════════════════════════════════════════════ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}
.stat-icon.blue { background: var(--primary-light); }
.stat-icon.green { background: var(--success-light); }
.stat-icon.yellow { background: var(--warning-light); }
.stat-icon.red { background: var(--danger-light); }

.stat-info { flex: 1; }
.stat-value { font-size: 1.8rem; font-weight: 800; color: var(--slate-900); line-height: 1.1; }
.stat-label { font-size: .8rem; color: var(--slate-500); font-weight: 500; }


/* ═══════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════ */
.table-container {
    overflow-x: auto;
}

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

thead th {
    text-align: left;
    padding: .75rem 1rem;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--slate-500);
    background: var(--slate-50);
    border-bottom: 1px solid var(--slate-200);
}

tbody td {
    padding: .75rem 1rem;
    font-size: .9rem;
    color: var(--slate-700);
    border-bottom: 1px solid var(--slate-100);
}

tbody tr { transition: var(--transition); }
tbody tr:hover { background: var(--slate-50); }

.badge {
    display: inline-block;
    padding: .2rem .6rem;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 600;
}
.badge-pending { background: var(--warning-light); color: #92400e; }
.badge-confirmed { background: var(--primary-light); color: var(--primary-dark); }
.badge-completed { background: var(--success-light); color: #065f46; }
.badge-cancelled { background: var(--danger-light); color: #991b1b; }
.badge-no_show { background: var(--slate-200); color: var(--slate-600); }


/* ═══════════════════════════════════════════════════════
   FORMS
   ═══════════════════════════════════════════════════════ */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: .35rem;
}

.form-group label {
    font-size: .85rem;
    font-weight: 600;
    color: var(--slate-600);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: .65rem .85rem;
    border: 1px solid var(--slate-300);
    border-radius: var(--radius);
    font-size: .9rem;
    color: var(--slate-800);
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group-full {
    grid-column: 1 / -1;
}


/* ═══════════════════════════════════════════════════════
   FAB (Floating Action Button)
   ═══════════════════════════════════════════════════════ */
.fab-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 90;
}

.fab {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    font-size: 1.8rem;
    font-weight: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    line-height: 1;
}
.fab:hover { transform: scale(1.08); box-shadow: var(--shadow-xl); }
.fab.open { transform: rotate(45deg); }

.fab-menu {
    position: absolute;
    bottom: calc(100% + .75rem);
    right: 0;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: var(--transition);
}
.fab-menu.visible { opacity: 1; pointer-events: all; transform: translateY(0); }

.fab-action {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem 1rem;
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    font-size: .85rem;
    font-weight: 600;
    color: var(--slate-700);
    white-space: nowrap;
    transition: var(--transition);
}
.fab-action:hover { background: var(--slate-50); transform: translateX(-4px); }


/* ═══════════════════════════════════════════════════════
   MODAL
   ═══════════════════════════════════════════════════════ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    animation: fadeIn .2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlide .3s ease;
}

@keyframes modalSlide {
    from { transform: translateY(20px) scale(.97); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--slate-200);
}

.modal-header h2 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--slate-900);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--slate-400);
    line-height: 1;
    padding: .2rem;
    transition: var(--transition);
}
.modal-close:hover { color: var(--slate-700); }

.modal-body { padding: 1.5rem; }
.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--slate-100);
    display: flex;
    justify-content: flex-end;
    gap: .5rem;
}


/* ═══════════════════════════════════════════════════════
   TOAST
   ═══════════════════════════════════════════════════════ */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 600;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.toast {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius);
    padding: .85rem 1.2rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: .75rem;
    min-width: 300px;
    max-width: 420px;
    animation: toastIn .3s ease, toastOut .3s ease 3.7s forwards;
    font-size: .9rem;
    font-weight: 500;
}

@keyframes toastIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100%); }
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-info { border-left: 4px solid var(--info); }


/* ═══════════════════════════════════════════════════════
   AGENDA / CALENDAR
   ═══════════════════════════════════════════════════════ */
.agenda-filters {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
    align-items: center;
}

.agenda-filters select,
.agenda-filters input {
    padding: .5rem .85rem;
    border: 1px solid var(--slate-300);
    border-radius: var(--radius);
    font-size: .85rem;
    color: var(--slate-700);
    background: white;
}

.agenda-timeline {
    display: grid;
    gap: .5rem;
}

.agenda-slot {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: .75rem;
    align-items: start;
    padding: .75rem 0;
    border-bottom: 1px solid var(--slate-100);
}

.slot-time {
    font-size: .85rem;
    font-weight: 600;
    color: var(--slate-500);
    text-align: right;
    padding-top: .25rem;
}

.slot-cards {
    display: flex;
    flex-direction: column;
    gap: .4rem;
}

.appointment-card {
    background: var(--primary-light);
    border-left: 3px solid var(--primary);
    border-radius: var(--radius-sm);
    padding: .6rem .85rem;
    cursor: pointer;
    transition: var(--transition);
}
.appointment-card:hover { box-shadow: var(--shadow); transform: translateX(2px); }
.appointment-card .appt-name { font-weight: 600; font-size: .9rem; color: var(--slate-800); }
.appointment-card .appt-detail { font-size: .8rem; color: var(--slate-500); }

.appointment-card.status-confirmed { background: var(--primary-light); border-left-color: var(--primary); }
.appointment-card.status-pending { background: var(--warning-light); border-left-color: var(--warning); }
.appointment-card.status-completed { background: var(--success-light); border-left-color: var(--success); }
.appointment-card.status-cancelled { background: var(--danger-light); border-left-color: var(--danger); opacity: .6; }
.appointment-card.status-no_show { background: var(--slate-100); border-left-color: var(--slate-400); }

/* Grid Views (Week/Month) */
.calendar-grid-week {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--slate-200);
    border: 1px solid var(--slate-200);
}
.calendar-day-cell {
    background: white;
    min-height: 120px;
    padding: .5rem;
}
.calendar-day-header {
    font-size: .75rem;
    font-weight: 700;
    color: var(--slate-500);
    text-align: center;
    padding: .5rem;
    background: var(--slate-50);
    border-bottom: 1px solid var(--slate-200);
}
.mini-appt {
    font-size: .7rem;
    padding: 2px 4px;
    margin-bottom: 2px;
    border-radius: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background: var(--primary-light);
    border-left: 2px solid var(--primary);
    cursor: pointer;
}
.current-day {
    color: var(--primary) !important;
    font-weight: 800 !important;
    text-decoration: underline;
}

.mini-appt.status-confirmed { background: var(--primary-light); border-left-color: var(--primary); }
.mini-appt.status-pending { background: var(--warning-light); border-left-color: var(--warning); }
.mini-appt.status-completed { background: var(--success-light); border-left-color: var(--success); }
.mini-appt.status-cancelled { background: var(--danger-light); border-left-color: var(--danger); opacity: .6; }
.mini-appt.status-no_show { background: var(--slate-100); border-left-color: var(--slate-400); }


/* ═══════════════════════════════════════════════════════
   ODONTOGRAM
   ═══════════════════════════════════════════════════════ */
.odontogram-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.odontogram-patient-select {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.odontogram-chart {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    overflow-x: auto;
}

.odontogram-arch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
}

.odontogram-arch-label {
    font-size: .85rem;
    font-weight: 600;
    color: var(--slate-500);
    text-transform: uppercase;
    letter-spacing: .06em;
}

.odontogram-row {
    display: flex;
    gap: 0;
    justify-content: center;
}


/* Individual tooth */
.tooth {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    cursor: pointer;
    transition: var(--transition);
    padding: 1px;
    border-radius: var(--radius-sm);
}
.tooth:hover { background: var(--slate-100); }
.tooth.selected { background: var(--primary-light); outline: 2px solid var(--primary); }

.tooth-number {
    font-size: .7rem;
    font-weight: 700;
    color: var(--slate-600);
}

.tooth-diagram {
    width: 38px;
    height: 38px;
    position: relative;
    cursor: pointer;
}

/* 5-face tooth diagram (SVG-like with divs) */
.tooth-face {
    position: absolute;
    transition: var(--transition);
}

.tooth-face-oclusal {
    width: 13px;
    height: 13px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    border: 1.2px solid var(--slate-400);
    z-index: 2;
}

.tooth-face-vestibular {
    width: 38px;
    height: 12px;
    top: 0;
    left: 0;
    background: white;
    border: 1.2px solid var(--slate-400);
    clip-path: polygon(0% 0%, 100% 0%, 62% 100%, 38% 100%);
    z-index: 1;
}

.tooth-face-palatina {
    width: 38px;
    height: 12px;
    bottom: 0;
    left: 0;
    background: white;
    border: 1.2px solid var(--slate-400);
    clip-path: polygon(38% 0%, 62% 0%, 100% 100%, 0% 100%);
    z-index: 1;
}

.tooth-face-mesial {
    width: 12px;
    height: 38px;
    top: 0;
    left: 0;
    background: white;
    border: 1.2px solid var(--slate-400);
    clip-path: polygon(0% 0%, 100% 38%, 100% 62%, 0% 100%);
    z-index: 1;
}

.tooth-face-distal {
    width: 12px;
    height: 38px;
    top: 0;
    right: 0;
    background: white;
    border: 1.2px solid var(--slate-400);
    clip-path: polygon(0% 38%, 100% 0%, 100% 100%, 0% 62%);
    z-index: 1;
}

.quadrant-separator {
    width: 2px;
    background: var(--slate-300);
    margin: 0 4px;
    border-radius: 1px;
    flex-shrink: 0;
}

/* Category Colors (OSPELSYM) */
.preexisting { color: var(--odo-preexisting) !important; }
.treatment { color: var(--odo-treatment) !important; }

.tooth-face.fill-red { background: var(--odo-preexisting) !important; border-color: var(--odo-preexisting); }
.tooth-face.fill-blue { background: var(--odo-treatment) !important; border-color: var(--odo-treatment); }

/* Common Buttons */
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-block { width: 100%; display: flex; justify-content: center; }

/* Button Group / Switcher */
.btn-group {
    display: inline-flex;
    background: var(--slate-100);
    padding: .25rem;
    border-radius: var(--radius);
}
.btn-group .btn {
    padding: .4rem .8rem;
    border-radius: var(--radius-sm);
    font-size: .8rem;
    font-weight: 600;
}
.btn-group .btn.active {
    background: white;
    box-shadow: var(--shadow-sm);
    color: var(--primary);
}
.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Tooth overlays refined for OSPELSYM */
.tooth-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    font-weight: 900;
    pointer-events: none;
    z-index: 10;
}

.tooth-overlay.extraction-red { color: var(--odo-preexisting); }
.tooth-overlay.extraction-blue { color: var(--odo-treatment); }

.tooth-overlay.crown-circle {
    border: 4px solid currentColor;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    top: -3px;
    left: -3px;
    background: transparent;
    z-index: 20;
}

.tooth-overlay.fracture-zigzag {
    font-size: 1.8rem;
    text-shadow: 0 0 3px white;
    z-index: 21;
}

.tooth-overlay.bridge-line::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 6px;
    border-top: 2.5px solid currentColor;
    border-bottom: 2.5px solid currentColor;
    top: 16px;
    left: -7px;
    z-index: 15;
    opacity: 0.8;
}

.tooth-overlay.root-canal-mark {
    font-size: 2rem;
    font-weight: 900;
    text-shadow: 0 0 2px white;
}

.tooth-overlay.implant-mark {
    font-size: 1.8rem;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    width: 34px;
    height: 34px;
    top: 2px;
    left: 2px;
    z-index: 18;
    border: 2px dashed currentColor;
}

.tooth-overlay.removable-mark {
    z-index: 19;
    width: 100%;
    height: 100%;
}
.tooth-overlay.removable-mark::before,
.tooth-overlay.removable-mark::after {
    content: '';
    position: absolute;
    width: 52px;
    height: 2.5px;
    background: currentColor;
    left: -7px;
    box-shadow: 0 0 2px white;
}
.tooth-overlay.removable-mark::before { top: 15px; }
.tooth-overlay.removable-mark::after { top: 20px; } /* 2.5px gap = minimal */

.tooth-label-container {
    font-size: 0.75rem;
    font-weight: 800;
    text-align: center;
    margin-top: 4px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sff-label {
    letter-spacing: 0.5px;
    padding: 0 4px;
    border: 1px solid currentColor;
    border-radius: 4px;
    background-color: white;
}

/* Row color helpers */
.row-preexisting, .row-preexisting strong { color: var(--odo-preexisting); }
.row-treatment, .row-treatment strong { color: var(--odo-treatment); }

/* Odontogram toolbar */
.odontogram-toolbar {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    padding: 1rem;
    background: var(--slate-50);
    border-radius: var(--radius);
    border: 1px solid var(--slate-200);
}

.tool-group {
    display: flex;
    gap: .25rem;
    align-items: center;
}

.tool-group-label {
    font-size: .75rem;
    font-weight: 600;
    color: var(--slate-500);
    margin-right: .4rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.tool-btn {
    padding: .45rem .75rem;
    border: 1px solid var(--slate-300);
    background: white;
    border-radius: var(--radius-sm);
    font-size: .8rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    color: var(--slate-700);
}
.tool-btn:hover { background: var(--slate-100); }
.tool-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.tool-btn.tool-red { border-color: var(--odo-preexisting); color: var(--odo-preexisting); }
.tool-btn.tool-red.active { background: var(--odo-preexisting); color: white; }
.tool-btn.tool-blue { border-color: var(--odo-treatment); color: var(--odo-treatment); }
.tool-btn.tool-blue.active { background: var(--odo-treatment); color: white; }

/* Reference legend */
.odontogram-legend {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    padding: .75rem;
    font-size: .8rem;
    color: var(--slate-600);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: .4rem;
}

.legend-swatch {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    border: 1px solid rgba(0,0,0,.1);
}

/* Odontogram entries table */
.odontogram-entries {
    margin-top: 1rem;
}


/* ═══════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        z-index: 200;
        transition: left .3s ease;
    }
    .sidebar.open { left: 0; }
    .btn-menu { display: flex; }

    .page-container { padding: 1rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }

    .modal { max-width: calc(100% - 2rem); margin: 1rem; }

    .odontogram-chart { padding: 1rem; }
    .tooth-diagram { width: 30px; height: 30px; }
    .tooth-face-oclusal { width: 10px; height: 10px; }
    .tooth-face-vestibular, .tooth-face-palatina { width: 30px; height: 10px; }
    .tooth-face-mesial, .tooth-face-distal { width: 10px; height: 30px; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
}


/* ═══════════════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════════════ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
    color: var(--slate-400);
}
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; opacity: .6; }
.empty-state-text { font-size: 1rem; font-weight: 500; }
.empty-state-sub { font-size: .85rem; margin-top: .25rem; }


/* ═══════════════════════════════════════════════════════
   LOADING SPINNER
   ═══════════════════════════════════════════════════════ */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2.5px solid var(--slate-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin .6s linear infinite;
}

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

.loading-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

/* ═══════════════════════════════════════════════════════
   TABS
   ═══════════════════════════════════════════════════════ */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--slate-200);
    gap: 0;
    margin-bottom: 1.5rem;
}

.tab {
    padding: .75rem 1.25rem;
    font-size: .9rem;
    font-weight: 600;
    color: var(--slate-500);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: var(--transition);
}
.tab:hover { color: var(--slate-700); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }