/* ============================================
   Vision 576 Optical Studio - Design System
   Premium Dark Glassmorphism Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============ CSS VARIABLES ============ */
:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.3);

    /* Accent Colors */
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.15);
    --info: #3b82f6;
    --info-light: rgba(59, 130, 246, 0.15);

    /* Background Colors */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(26, 26, 46, 0.8);
    --bg-card-hover: rgba(26, 26, 46, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-input: rgba(255, 255, 255, 0.05);

    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #818cf8;

    /* Border Colors */
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --border-focus: rgba(99, 102, 241, 0.5);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--primary-glow);

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 65px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============ RESET & BASE ============ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

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

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(99, 102, 241, 0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

a { color: var(--primary-light); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-light); }

/* ============ LOGIN PAGE ============ */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.login-container {
    width: 100%;
    max-width: 420px;
    position: relative;
}

.login-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.login-logo {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo .icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 32px;
    box-shadow: var(--shadow-glow);
}

.login-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* ============ LAYOUT ============ */
.app-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ============ SIDEBAR ============ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

.sidebar-brand {
    padding: 20px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-brand .brand-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.sidebar-brand .brand-text h2 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.sidebar-brand .brand-text span {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    padding: 16px 12px;
    flex: 1;
}

.sidebar-nav .nav-section {
    margin-bottom: 20px;
}

.sidebar-nav .nav-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
    font-weight: 600;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    cursor: pointer;
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.nav-link:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.1));
    color: var(--primary-light);
    border-left: 3px solid var(--primary);
}

.nav-link .badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 0.65rem;
    padding: 2px 7px;
    border-radius: 10px;
    font-weight: 600;
}

/* ============ MAIN CONTENT ============ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* ============ TOP HEADER ============ */
.top-header {
    height: var(--header-height);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-header .page-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.top-header .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-search {
    position: relative;
}

.header-search input {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 8px 16px 8px 38px;
    color: var(--text-primary);
    font-size: 0.85rem;
    width: 280px;
    transition: all var(--transition-fast);
    outline: none;
}

.header-search input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
    width: 320px;
}

.header-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.header-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.header-user:hover {
    background: var(--bg-glass);
}

.header-user .avatar {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

/* ============ PAGE WRAPPER ============ */
.page-content {
    padding: 28px;
}

/* ============ CARDS ============ */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-normal);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.card-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

/* ============ STAT CARDS ============ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.stat-card.primary::before { background: linear-gradient(90deg, var(--primary), var(--primary-light)); }
.stat-card.success::before { background: linear-gradient(90deg, var(--success), #34d399); }
.stat-card.warning::before { background: linear-gradient(90deg, var(--warning), #fbbf24); }
.stat-card.info::before { background: linear-gradient(90deg, var(--info), #60a5fa); }
.stat-card.accent::before { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
.stat-card.danger::before { background: linear-gradient(90deg, var(--danger), #f87171); }

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.stat-card.primary .stat-icon { background: rgba(99, 102, 241, 0.15); color: var(--primary-light); }
.stat-card.success .stat-icon { background: var(--success-light); color: var(--success); }
.stat-card.warning .stat-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.info .stat-icon { background: var(--info-light); color: var(--info); }
.stat-card.accent .stat-icon { background: rgba(6, 182, 212, 0.15); color: var(--accent); }
.stat-card.danger .stat-icon { background: var(--danger-light); color: var(--danger); }

.stat-card .stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.stat-card .stat-change {
    margin-top: 10px;
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-card .stat-change.up { color: var(--success); }
.stat-card .stat-change.down { color: var(--danger); }

/* ============ FORM STYLES ============ */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(255, 255, 255, 0.07);
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 10px center;
    background-repeat: no-repeat;
    background-size: 20px;
    padding-right: 36px;
}

select.form-control option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.form-row-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    text-decoration: none;
    line-height: 1.4;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    box-shadow: 0 6px 20px var(--primary-glow);
    transform: translateY(-1px);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, #34d399, var(--success));
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #d97706);
    color: #1a1a2e;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #f87171, var(--danger));
    color: white;
}

.btn-secondary {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-whatsapp {
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: white;
}

.btn-whatsapp:hover {
    background: linear-gradient(135deg, #2ee672, #25d366);
    color: white;
}

/* ============ TABLES ============ */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

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

thead th {
    background: rgba(99, 102, 241, 0.08);
    padding: 12px 16px;
    text-align: left;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
    color: var(--text-primary);
}

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: rgba(99, 102, 241, 0.04);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* ============ MODAL ============ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-lg { max-width: 800px; }
.modal-xl { max-width: 1000px; }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    border: none;
    background: transparent;
    font-size: 1.1rem;
}

.modal-close:hover {
    background: var(--danger-light);
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ============ TOAST NOTIFICATIONS ============ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 420px;
    animation: slideInRight 0.3s ease;
    font-size: 0.88rem;
}

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

.toast .toast-icon { font-size: 1.2rem; }
.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info .toast-icon { color: var(--info); }

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ============ TABS ============ */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-glass);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    border: none;
    background: transparent;
    font-family: inherit;
}

.tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ============ BADGES ============ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-primary { background: rgba(99, 102, 241, 0.15); color: var(--primary-light); }

/* ============ SEARCH RESULT ============ */
.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 200;
    display: none;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: rgba(99, 102, 241, 0.08);
}

.search-result-item:last-child {
    border-bottom: none;
}

/* ============ PRESCRIPTION CARD ============ */
.rx-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
}

.rx-eye {
    text-align: center;
}

.rx-eye h4 {
    font-size: 0.85rem;
    color: var(--text-accent);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.rx-eye .rx-fields {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

/* ============ CHART CONTAINER ============ */
.chart-container {
    position: relative;
    height: 300px;
    padding: 10px;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ============ GRID LAYOUTS ============ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ============ EMPTY STATE ============ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.85rem;
    max-width: 300px;
    margin: 0 auto;
}

/* ============ DOCTOR CARD ============ */
.doctor-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.doctor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.doctor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.doctor-card .doctor-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 4px;
}

.doctor-card .doctor-qualification {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.doctor-card .doctor-schedule {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px;
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.doctor-card .doctor-schedule i {
    color: var(--accent);
    margin-top: 2px;
}

/* ============ BILLING ============ */
.bill-items-table {
    width: 100%;
}

.bill-summary {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
}

.bill-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 0.9rem;
}

.bill-summary-row.total {
    border-top: 2px solid var(--border);
    padding-top: 12px;
    margin-top: 8px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-light);
}

/* ============ FILTERS BAR ============ */
.filters-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.filters-bar .form-control {
    width: auto;
    min-width: 150px;
}

/* ============ ACTION BUTTONS ============ */
.action-btns {
    display: flex;
    gap: 6px;
}

.action-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
}

.action-btn:hover { background: var(--bg-glass); color: var(--text-primary); }
.action-btn.edit:hover { color: var(--primary-light); border-color: var(--primary); }
.action-btn.delete:hover { color: var(--danger); border-color: var(--danger); }
.action-btn.view:hover { color: var(--accent); border-color: var(--accent); }
.action-btn.whatsapp:hover { color: #25d366; border-color: #25d366; }

/* ============ PERIOD SELECTOR ============ */
.period-selector {
    display: flex;
    gap: 4px;
    background: var(--bg-glass);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.period-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.period-btn:hover { color: var(--text-primary); }
.period-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px var(--primary-glow);
}

/* ============ TIMELINE ============ */
.timeline {
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding: 0 0 24px 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    border: 2px solid var(--bg-secondary);
}

/* ============ UTILITY ============ */
.text-primary { color: var(--primary-light); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mr-1 { margin-right: 8px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.flex-1 { flex: 1; }

.hidden { display: none !important; }
.w-100 { width: 100%; }

/* ============ LOADING SPINNER ============ */
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin: 40px auto;
}

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

/* ============ MOBILE TOGGLE ============ */
.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
}

/* ============ PRINT STYLES ============ */
@media print {
    .sidebar, .top-header, .no-print { display: none !important; }
    .main-content { margin-left: 0 !important; }
    .page-content { padding: 0 !important; }
    body { background: white; color: #000; }
    body::before { display: none; }
    .card { border: 1px solid #ddd; background: white; }
    .stat-card { border: 1px solid #ddd; background: white; page-break-inside: avoid; }
    .stat-card .stat-value { color: #000; }
    .btn { display: none !important; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .mobile-toggle {
        display: flex;
    }
    .page-content {
        padding: 16px;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .header-search input {
        width: 180px;
    }
    .header-search input:focus {
        width: 220px;
    }
    .form-row-3, .form-row-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .rx-card {
        grid-template-columns: 1fr;
    }
    .modal {
        margin: 10px;
        max-height: 95vh;
    }
    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .filters-bar .form-control {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .form-row-3, .form-row-4, .form-row {
        grid-template-columns: 1fr;
    }
    .tabs {
        flex-direction: column;
    }
    .login-card {
        padding: 32px 24px;
    }
}

/* ============ CUSTOM REQUIREMENT BADGES ============ */
.check-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    color: var(--text-secondary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.check-badge input {
    margin-right: 8px;
    cursor: pointer;
    width: 14px;
    height: 14px;
}
.check-badge:hover {
    border-color: var(--primary-light);
    background: rgba(var(--primary-rgb), 0.05);
    transform: translateY(-1px);
}
.check-badge:has(input:checked) {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 2px 6px var(--primary-glow);
}
.req-group {
    background: rgba(255,255,255,0.5);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    flex: 1;
}
.check-badge input:checked {
    accent-color: white;
}