/* ==========================================================================
   OptiCare Premium Design System - Clinical & Modern Luxury (Bilingual)
   ========================================================================== */

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

:root {
    /* Color Palette - Light Luxury Mode */
    --primary: #0d5c50;            /* Emerald / Deep Teal */
    --primary-light: #167e6f;      /* Light Teal */
    --primary-dark: #073a32;       /* Forest Teal */
    --secondary: #cda250;          /* Champagne Gold */
    --secondary-hover: #b0873a;    /* Rich Dark Gold */
    --bg-main: #f4f7f6;            /* Clinic Off-White */
    --bg-card: rgba(255, 255, 255, 0.85); /* Glass White */
    --bg-sidebar: #073a32;         /* Dark Teal Sidebar */
    --text-main: #1f2928;          /* Slate Charcoal */
    --text-muted: #627572;         /* Muted Sage */
    --border-color: rgba(13, 92, 80, 0.1); /* Subtle Teal Border */
    --gold-border: rgba(205, 162, 80, 0.2);
    --shadow-main: 0 10px 30px rgba(7, 58, 50, 0.04);
    --shadow-premium: 0 15px 35px rgba(205, 162, 80, 0.08);
    --glass-blur: blur(16px);
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* Fonts */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Luxury Mode Variables */
body.dark-theme {
    --bg-main: #0a0e0d;            /* Abyss Black/Teal */
    --bg-card: rgba(15, 23, 22, 0.7); /* Deep Glass */
    --bg-sidebar: #051412;         /* Pitch Teal */
    --text-main: #e2e8f0;          /* Slate White */
    --text-muted: #8e9e9c;         /* Sage Silver */
    --border-color: rgba(255, 255, 255, 0.06);
    --gold-border: rgba(205, 162, 80, 0.25);
    --shadow-main: 0 10px 35px rgba(0, 0, 0, 0.5);
    --shadow-premium: 0 15px 35px rgba(205, 162, 80, 0.05);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* --- App Layout --- */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100vw;
}

/* Sidebar Styling - Luxury Emerald & Gold Accent */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    color: white;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    border-right: 1px solid var(--gold-border);
    transition: var(--transition);
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 2rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--secondary), #f5d082);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-dark);
    box-shadow: 0 4px 15px rgba(205, 162, 80, 0.3);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #ffffff 30%, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.branch-selector-wrapper {
    margin-bottom: 1.5rem;
}

.branch-select {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--gold-border);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-family: var(--font-body);
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
}

.branch-select:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 10px rgba(205, 162, 80, 0.2);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    color: rgba(255, 255, 255, 0.75);
}

.nav-item i {
    font-size: 1.25rem;
    transition: var(--transition);
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-hover));
    color: var(--primary-dark);
    font-weight: 600;
    box-shadow: var(--shadow-premium);
}

.nav-item.active i {
    color: var(--primary-dark);
}

.sidebar-footer {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: var(--secondary);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    border: 2px solid var(--secondary);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 0.9rem;
    font-weight: 600;
}

.user-role {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: capitalize;
}

/* --- Main Content Layout --- */
.main-wrapper {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-width: 0;
}

/* Navbar Top Styling */
.navbar {
    height: 80px;
    background-color: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 90;
    transition: var(--transition);
}

.page-title-container h2 {
    font-size: 1.6rem;
    letter-spacing: -0.5px;
    color: var(--primary-dark);
}
body.dark-theme .page-title-container h2 {
    color: white;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

/* Quick Action / Standard Buttons */
.btn-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(13, 92, 80, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--primary);
    transition: var(--transition);
}

.btn-icon:hover {
    background-color: var(--secondary);
    color: var(--primary-dark);
    border-color: var(--secondary);
    transform: translateY(-2px);
}

.lang-toggle {
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

/* Content Body */
.content-body {
    padding: 2.5rem;
    flex-grow: 1;
    overflow-y: auto;
    max-height: calc(100vh - 80px);
}

/* --- UI Patterns (Cards, Buttons, Tables) --- */
.glass-card {
    background-color: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-main);
    transition: var(--transition);
}

.glass-card:hover {
    border-color: var(--gold-border);
    box-shadow: var(--shadow-premium);
}

.btn-premium {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-hover));
    color: var(--primary-dark);
    border: none;
    padding: 0.75rem 1.75rem;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(205, 162, 80, 0.2);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(205, 162, 80, 0.35);
}

.btn-secondary {
    background-color: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    padding: 0.75rem 1.75rem;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: white;
}

/* --- 1. LOGIN SPLIT-SCREEN STYLE --- */
.login-container {
    display: flex;
    min-height: 100vh;
    width: 100vw;
}

.login-left {
    flex: 1.2;
    background: linear-gradient(135deg, rgba(7, 58, 50, 0.9), rgba(13, 92, 80, 0.95)), 
                url('https://images.unsplash.com/photo-1574258495973-f010dfbb5371?q=80&w=1200&auto=format&fit=crop') center/cover;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 4rem;
    color: white;
    position: relative;
    border-right: 1.5px solid var(--secondary);
}

.login-branding {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.login-tagline h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.login-tagline h1 span {
    color: var(--secondary);
    display: block;
}

.login-tagline p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    max-width: 500px;
}

.login-right {
    flex: 0.8;
    background-color: var(--bg-main);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

.login-form-card {
    width: 100%;
    max-width: 440px;
}

.login-header {
    margin-bottom: 2.5rem;
}

.login-header h2 {
    font-size: 2.2rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}
body.dark-theme .login-header h2 {
    color: white;
}

.input-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-control {
    width: 100%;
    padding: 0.85rem 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--bg-card);
    color: var(--text-main);
    outline: none;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.input-control:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 10px rgba(205, 162, 80, 0.15);
}

/* --- 2. DASHBOARD --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: var(--font-heading);
    color: var(--primary-dark);
}
body.dark-theme .stat-value {
    color: white;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background-color: rgba(205, 162, 80, 0.1);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.dashboard-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

/* --- Elegant Tables --- */
.table-wrapper {
    overflow-x: auto;
    margin-top: 1rem;
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.custom-table th {
    padding: 1rem 1.25rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}

.custom-table td {
    padding: 1.15rem 1.25rem;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.custom-table tr:hover td {
    background-color: rgba(13, 92, 80, 0.02);
}

body.dark-theme .custom-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.01);
}

/* Badge System */
.badge {
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.badge-success { background-color: rgba(16, 185, 129, 0.1); color: var(--success); }
.badge-warning { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }
.badge-danger { background-color: rgba(239, 68, 68, 0.1); color: var(--danger); }
.badge-info { background-color: rgba(59, 130, 246, 0.1); color: var(--info); }

/* --- 3. CUSTOMER / SEARCH & ACTIONS --- */
.actions-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.search-input-wrapper {
    position: relative;
    max-width: 400px;
    flex-grow: 1;
}

.search-icon {
    position: absolute;
    left: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-control {
    width: 100%;
    padding: 0.85rem 1.25rem 0.85rem 2.8rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--bg-card);
    color: var(--text-main);
    outline: none;
    transition: var(--transition);
}

.search-control:focus {
    border-color: var(--secondary);
    box-shadow: var(--shadow-premium);
}

/* Due checkup row styling */
.alert-row {
    position: relative;
}
.alert-row::after {
    content: '';
    position: absolute;
    left: 0;
    top: 10%;
    height: 80%;
    width: 4px;
    background-color: var(--danger);
    border-radius: 0 4px 4px 0;
}

/* --- 4. CUSTOMER DETAILS (OD/OS GRID) --- */
.customer-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.client-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.client-name {
    font-size: 2.2rem;
    color: var(--primary-dark);
}
body.dark-theme .client-name {
    color: white;
}

.client-contacts {
    display: flex;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Optometric Eye Prescription Table Grid */
.prescription-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.eye-section {
    padding: 1.5rem;
    border-radius: 16px;
    border: 1.5px solid var(--border-color);
}

.eye-section.od {
    background-color: rgba(13, 92, 80, 0.03);
    border-left: 5px solid var(--primary);
}

.eye-section.os {
    background-color: rgba(205, 162, 80, 0.03);
    border-left: 5px solid var(--secondary);
}

.eye-section h4 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.eye-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.75rem;
}

.eye-val-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: 10px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.eye-val-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.eye-val-num {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

/* --- 5. INVENTORY & TABS --- */
.tab-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

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

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -0.6rem;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary);
    border-radius: 20px;
}

body.dark-theme .tab-btn.active {
    color: var(--secondary);
}
body.dark-theme .tab-btn.active::after {
    background-color: var(--secondary);
}

/* --- 6. POINT OF SALE (POS) LAYOUT --- */
.pos-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 1.5rem;
    height: calc(100vh - 190px);
}

.pos-catalog {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.pos-cart {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.cart-items-wrapper {
    flex-grow: 1;
    overflow-y: auto;
    margin-bottom: 1.5rem;
    padding-right: 0.5rem;
}

.cart-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.cart-item-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.cart-item-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.cart-item-qty-price {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.cart-qty-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-qty {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
}

.btn-qty:hover {
    background-color: var(--secondary);
    color: var(--primary-dark);
}

.pos-totals {
    border-top: 2px dashed var(--border-color);
    padding-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.total-row {
    display: flex;
    justify-content: space-between;
    font-size: 1rem;
}

.total-row.grand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-dark);
    font-family: var(--font-heading);
}
body.dark-theme .total-row.grand {
    color: white;
}

/* --- 7. APPOINTMENTS WEEKLY CALENDAR --- */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.calendar-day-header {
    text-align: center;
    padding: 0.75rem;
    background-color: var(--primary-dark);
    color: white;
    font-weight: 600;
    border-radius: 10px;
    font-size: 0.85rem;
}

.calendar-day-cell {
    min-height: 280px;
    background-color: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: var(--transition);
}

.calendar-day-cell.today {
    border-color: var(--secondary);
    box-shadow: var(--shadow-premium);
}

.calendar-day-num {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calendar-day-cell.today .calendar-day-num {
    color: var(--secondary);
}

.appointment-item {
    padding: 0.65rem 0.8rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease-in-out;
}

.appointment-item:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
    border-color: var(--secondary);
}

/* Color Coding by Appointment Type (Modern Tinted Gradients) */
.appointment-item.apt-eye_exam {
    border-left: 4px solid var(--secondary);
    background: linear-gradient(90deg, rgba(205, 162, 80, 0.12) 0%, rgba(205, 162, 80, 0.02) 100%);
}
.appointment-item.apt-pickup {
    border-left: 4px solid var(--success);
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.12) 0%, rgba(16, 185, 129, 0.02) 100%);
}
.appointment-item.apt-consultation {
    border-left: 4px solid var(--info);
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.12) 0%, rgba(59, 130, 246, 0.02) 100%);
}

/* Styling Webkit Calendar Picker Indicators to Match Champagne Gold theme */
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: invert(70%) sepia(50%) saturate(1000%) hue-rotate(5deg);
    opacity: 0.75;
    transition: var(--transition);
}
input[type="date"]::-webkit-calendar-picker-indicator:hover,
input[type="time"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
    transform: scale(1.15);
}

/* --- MODAL DIALOGS --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(7, 58, 50, 0.4);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--bg-main);
    border: 1px solid var(--gold-border);
    border-radius: 24px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* --- ANIMATIONS --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.4s ease forwards;
}

/* --- MOBILE RESPONSIVE --- */
@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1.5px solid var(--gold-border);
        padding: 1.25rem;
    }
    
    .logo-container {
        padding-bottom: 0;
        border-bottom: none;
        margin-bottom: 0;
        justify-content: space-between;
    }
    
    .nav-links {
        display: none; /* Can implement burger menu later if requested */
    }
    
    .content-body {
        padding: 1.5rem;
        max-height: none;
    }
    
    .pos-layout {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .prescription-container {
        grid-template-columns: 1fr;
    }
    
    .calendar-grid {
        grid-template-columns: 1fr;
    }
}

/* --- PRINT RECEIPT --- */
@media print {
    body * {
        visibility: hidden;
    }
    .print-receipt-modal, .print-receipt-modal * {
        visibility: visible;
    }
    .print-receipt-modal {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
}

/* POS Category Filters & Product Card Image Styles */
.pos-category-pills-container {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}
.pos-category-pills-container::-webkit-scrollbar {
    height: 4px;
}
.pos-category-pills-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
.pos-category-pill {
    padding: 0.4rem 1.1rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1.5px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}
.pos-category-pill:hover {
    color: var(--text-main);
    border-color: var(--gold-border);
    background: rgba(205, 162, 80, 0.05);
}
.pos-category-pill.active {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    border-color: var(--secondary);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(205, 162, 80, 0.15);
}

.pos-product-card-img-wrapper {
    width: 100%;
    height: 110px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
    position: relative;
}
.pos-product-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.pos-product-card-img-placeholder {
    width: 100%;
    height: 100%;
    background: rgba(205, 162, 80, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
}

/* Enhanced Multi-View Calendar Styles */
.calendar-month-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: auto repeat(5, 1fr);
    gap: 0.5rem;
    margin-top: 1.5rem;
    background: rgba(255,255,255,0.01);
    border-radius: 16px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
}
.calendar-month-cell {
    min-height: 90px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: var(--transition);
}
.calendar-month-cell:hover {
    border-color: var(--gold-border);
    transform: translateY(-2px);
}
.calendar-month-cell.other-month {
    opacity: 0.35;
    background-color: rgba(0,0,0,0.05);
}
.calendar-month-cell.today {
    border-color: var(--secondary);
    background: rgba(205, 162, 80, 0.05);
}
.calendar-month-day-num {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
}
.calendar-month-apt-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}
.calendar-month-apts-container {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    overflow-y: auto;
    max-height: 60px;
}
.calendar-month-apt-badge {
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: white;
}
.calendar-month-apt-badge.apt-eye_exam,
.badge.apt-eye_exam {
    background-color: var(--primary);
    border-left: 2px solid var(--secondary);
}
.calendar-month-apt-badge.apt-pickup,
.badge.apt-pickup {
    background-color: var(--success);
}
.calendar-month-apt-badge.apt-consultation,
.badge.apt-consultation {
    background-color: var(--info);
}

.calendar-day-agenda {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.calendar-agenda-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem;
    border-radius: 12px;
    background-color: var(--bg-card);
    border: 1.5px solid var(--border-color);
    transition: var(--transition);
}
.calendar-agenda-item:hover {
    border-color: var(--gold-border);
    transform: translateX(4px);
}
.calendar-agenda-time {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary);
    min-width: 70px;
}
.calendar-agenda-details {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.calendar-agenda-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
}
.calendar-agenda-notes {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.calendar-agenda-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calendar-staff-grid {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}
.calendar-staff-column {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    background: rgba(255,255,255,0.01);
    border: 1.5px solid var(--border-color);
    border-radius: 16px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.calendar-staff-header {
    text-align: center;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}
.calendar-staff-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
}
.calendar-staff-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Table Column Sorting Styles */
th.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s, color 0.2s;
}
th.sortable:hover {
    background-color: rgba(205, 162, 80, 0.1) !important;
    color: var(--secondary) !important;
}
th.sortable i {
    margin-left: 0.25rem;
    vertical-align: middle;
    width: 14px;
    height: 14px;
}

/* --- 9. MENU GROUPING & COLLAPSIBLE SIDEBAR --- */
.menu-group-header {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.35);
    letter-spacing: 1px;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    transition: opacity 0.3s;
}

.sidebar {
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
}

/* Collapsed state styles for Desktop */
.sidebar.collapsed {
    width: 78px;
    padding: 2rem 0.75rem;
}

.sidebar.collapsed .logo-brand,
.sidebar.collapsed .branch-selector-wrapper,
.sidebar.collapsed .menu-group-header,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .sidebar-footer .user-info,
.sidebar.collapsed .sidebar-footer button {
    display: none !important;
}

.sidebar.collapsed .logo-container {
    justify-content: center !important;
}

.sidebar.collapsed .sidebar-toggle-btn {
    width: 100%;
    margin-left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: 0.85rem;
}

.sidebar.collapsed .sidebar-footer {
    justify-content: center;
    padding-top: 1rem;
}

/* Mobile responsive toggle sidebar behavior */
@media (max-width: 1024px) {
    .sidebar-toggle-btn {
        padding: 6px;
    }
    
    .sidebar.collapsed .nav-links,
    .sidebar.collapsed .branch-selector-wrapper,
    .sidebar.collapsed .sidebar-footer {
        display: none !important;
    }

    .sidebar:not(.collapsed) .nav-links {
        display: flex !important;
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
        margin-top: 1rem;
    }

    .sidebar:not(.collapsed) .branch-selector-wrapper {
        display: block !important;
        width: 100%;
        margin-top: 1rem;
    }

    .sidebar:not(.collapsed) .sidebar-footer {
        display: flex !important;
        width: 100%;
        margin-top: 1.5rem;
    }
}

/* Collapsible Eye Exam History Cards */
.collapsible-exam-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-card);
    transition: box-shadow 0.2s ease;
}

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

.exam-card-header {
    background: rgba(205, 162, 80, 0.02);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.exam-card-header:hover {
    background-color: rgba(205, 162, 80, 0.06);
}

.exam-card-body {
    transition: all 0.3s ease;
}

/* Required fields asterisk styling */
.required-asterisk {
    color: var(--danger);
    font-weight: bold;
    margin-left: 2px;
}