/* ===================================
   MODERN RESTAURANT THEME
   Modern, Elegant & Mobile-First
   =================================== */

/* CSS Variables - Color Palette */
:root {
    /* Primary Colors */
    --primary-color: #d4a574;
    --primary-dark: #b8935f;
    --primary-light: #e8d4bc;
    
    /* Secondary Colors */
    --secondary-color: #2c3e50;
    --secondary-dark: #1a252f;
    --secondary-light: #34495e;
    
    /* Accent Colors */
    --accent-color: #e74c3c;
    --accent-green: #27ae60;
    --accent-blue: #3498db;
    
    /* Neutral Colors */
    --light-bg: #f8f9fa;
    --dark-bg: #1a1a1a;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 48px rgba(0,0,0,0.20);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

/* ===================================
   BASE STYLES
   =================================== */

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

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

.btn-light {
    background: var(--white);
    color: var(--gray-800);
    box-shadow: var(--shadow-sm);
}

.btn-light:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ===================================
   NAVBAR
   =================================== */

.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.navbar-brand:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--gray-700);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--gray-100);
}

.nav-link.active {
    color: var(--primary-color);
    background: var(--primary-light);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.6), rgba(0,0,0,0.3));
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section h1,
.hero-section p {
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    animation: fadeInUp 0.8s ease-out;
}

/* ===================================
   CARDS
   =================================== */

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.card-img-top {
    transition: transform var(--transition-slow);
    height: 250px;
    object-fit: cover;
}

.card:hover .card-img-top {
    transform: scale(1.08);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
}

.card-text {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===================================
   FORMS
   =================================== */

.form-control,
.form-select,
textarea.form-control {
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    background: var(--white);
}

.form-control:focus,
.form-select:focus,
textarea.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(212, 165, 116, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   FOOTER
   =================================== */

footer {
    background: linear-gradient(135deg, var(--dark-bg), var(--secondary-dark));
    color: var(--gray-400);
    padding: 3rem 0 1rem;
}

footer h5 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: 0.5rem;
}

footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

footer a {
    color: var(--gray-400);
    transition: all var(--transition-base);
    display: inline-block;
}

footer a:hover,
footer .hover-link:hover {
    color: var(--primary-color);
    transform: translateX(4px);
}

footer .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

footer .social-links a:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-4px) scale(1.1);
}

/* ===================================
   UTILITIES
   =================================== */

.text-primary { color: var(--primary-color) !important; }
.bg-light { background-color: var(--light-bg) !important; }
.bg-white { background-color: var(--white) !important; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* ===================================
   ANIMATIONS
   =================================== */

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

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in { animation: fadeIn 0.6s ease-out; }
.slide-in { animation: slideIn 0.8s ease-out; }

/* ===================================
   LANGUAGE SWITCHER ANIMATION
   =================================== */

.language-switching {
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.language-switch-fade {
    animation: fadeIn 0.5s ease-out;
}

/* ===================================
   SCROLL TO TOP BUTTON
   =================================== */

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-radius: var(--radius-full);
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    z-index: 999;
    border: none;
}

.scroll-to-top:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-xl);
}

.scroll-to-top.show {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

/* ===================================
   LOADING SPINNER
   =================================== */

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

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

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    .hero-section {
        min-height: 450px;
        background-attachment: scroll;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card-img-top {
        height: 200px;
    }
    
    footer h5::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    footer .text-center h5::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

/* ===================================
   ADMIN PANEL STYLES
   =================================== */

.admin-sidebar {
    background: var(--dark-bg);
    min-height: 100vh;
    box-shadow: var(--shadow-md);
}

.admin-sidebar .nav-link {
    color: var(--gray-400);
    padding: 1rem 1.5rem;
    border-radius: 0;
    margin: 0.25rem 0.5rem;
    border-left: 3px solid transparent;
}

.admin-sidebar .nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
    border-left-color: var(--primary-color);
}

.admin-sidebar .nav-link.active {
    background: rgba(212, 165, 116, 0.15);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.admin-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

.table-hover tbody tr {
    transition: all var(--transition-fast);
}

.table-hover tbody tr:hover {
    background-color: rgba(212, 165, 116, 0.08);
    transform: scale(1.01);
}

.badge {
    padding: 0.5em 0.85em;
    font-weight: 600;
    border-radius: var(--radius-md);
}

/* ===================================
   SPECIAL EFFECTS
   =================================== */

.glass-effect {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}