/**
 * Modern Design System for Constru Depot
 * Using brand colors: Orange #f7931d, Blue #0673B5
 */

/* ================================
   CSS Custom Properties (Variables)
   ================================ */
:root {
    /* Primary Brand Colors */
    --primary-orange: #f7931d;
    --primary-orange-light: #ffab4a;
    --primary-orange-dark: #d67800;
    --primary-blue: #0673B5;
    --primary-blue-light: #1a8fd4;
    --primary-blue-dark: #045a8f;

    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Gradients */
    --gradient-orange: linear-gradient(135deg, #f7931d 0%, #ffab4a 100%);
    --gradient-blue: linear-gradient(135deg, #0673B5 0%, #1a8fd4 100%);
    --gradient-hero: linear-gradient(135deg, #f7931d 0%, #0673B5 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-orange: 0 10px 40px -10px rgba(247, 100, 32, 0.4);
    --shadow-blue: 0 10px 40px -10px rgba(6, 115, 181, 0.4);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* Typography */
    --font-sans: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    --font-display: 'Poppins', 'Inter', sans-serif;

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

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}

/* ================================
   Base Reset & Typography
   ================================ */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background-color: var(--gray-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ================================
   Modern Header Styles
   ================================ */
.modern-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: var(--transition-normal);
}

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

.header-top-bar {
    height: 6px;
    background: linear-gradient(90deg, var(--primary-orange) 50%, var(--primary-blue) 50%);
}

/* ================================
   Modern Button Styles
   ================================ */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 24px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-modern:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-orange);
    color: white;
    box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 45px -10px rgba(247, 100, 32, 0.5);
}

.btn-secondary {
    background: var(--gradient-blue);
    color: white;
    box-shadow: var(--shadow-blue);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 45px -10px rgba(6, 115, 181, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary-orange);
    border: 2px solid var(--primary-orange);
}

.btn-outline:hover {
    background: var(--primary-orange);
    color: white;
    transform: translateY(-2px);
}

/* ================================
   Modern Card Styles
   ================================ */
.product-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-200);
}

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

.product-card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1/1;
}

.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-card-image img {
    transform: scale(1.1);
}

.product-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    align-items: flex-end;
    padding: var(--space-md);
}

.product-card:hover .product-card-overlay {
    opacity: 1;
}

.product-card-content {
    padding: var(--space-lg);
}

.product-card-title {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0 0 var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.product-card-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-orange);
}

.product-card-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--gradient-orange);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    box-shadow: var(--shadow-md);
}

/* ================================
   Modern Form Styles
   ================================ */
.form-group-modern {
    position: relative;
    margin-bottom: var(--space-lg);
}

.form-input-modern {
    width: 100%;
    padding: 16px 20px;
    font-size: 16px;
    font-family: var(--font-sans);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: white;
    transition: all var(--transition-normal);
    outline: none;
}

.form-input-modern:focus {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 4px rgba(247, 100, 32, 0.1);
}

.form-input-modern::placeholder {
    color: var(--gray-400);
}

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

/* Floating Label Style */
.form-floating-modern {
    position: relative;
}

.form-floating-modern .form-input-modern {
    padding: 24px 20px 8px;
}

.form-floating-modern .form-label-floating {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    pointer-events: none;
    transition: all var(--transition-fast);
    font-size: 16px;
}

.form-floating-modern .form-input-modern:focus~.form-label-floating,
.form-floating-modern .form-input-modern:not(:placeholder-shown)~.form-label-floating {
    top: 12px;
    font-size: 12px;
    color: var(--primary-orange);
    font-weight: 600;
}

/* ================================
   Modern Search Bar
   ================================ */
.search-modern {
    display: flex;
    align-items: center;
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    padding: 8px 8px 8px 24px;
    transition: all var(--transition-normal);
    max-width: 400px;
}

.search-modern:focus-within {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 4px rgba(247, 100, 32, 0.1);
}

.search-modern input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 15px;
    font-family: var(--font-sans);
    background: transparent;
    color: var(--gray-800);
}

.search-modern input::placeholder {
    color: var(--gray-400);
}

.search-modern-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--gradient-blue);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.search-modern-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-blue);
}

/* ================================
   Hero Section
   ================================ */
.hero-modern {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-modern::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    max-width: 600px;
    padding: var(--space-3xl);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

/* ================================
   Section Titles
   ================================ */
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-lg);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-orange);
    border-radius: var(--radius-full);
}

.section-title-center {
    text-align: center;
    display: block;
}

.section-title-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* ================================
   Modern Navigation
   ================================ */
.nav-modern {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-modern a {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-modern a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-orange);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-modern a:hover {
    color: var(--primary-orange);
    background: rgba(247, 100, 32, 0.05);
}

.nav-modern a:hover::after {
    width: 80%;
}

/* ================================
   Footer Modern
   ================================ */
.footer-modern {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-modern a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-modern a:hover {
    color: var(--primary-orange);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    background: var(--primary-orange);
    transform: translateY(-4px);
}

/* ================================
   Utility Classes
   ================================ */
.container-modern {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.text-gradient {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-slide-up {
    animation: slideUp 0.6s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger animation for lists */
.stagger-animation>* {
    opacity: 0;
    animation: slideUp 0.5s ease forwards;
}

.stagger-animation>*:nth-child(1) {
    animation-delay: 0.1s;
}

.stagger-animation>*:nth-child(2) {
    animation-delay: 0.2s;
}

.stagger-animation>*:nth-child(3) {
    animation-delay: 0.3s;
}

.stagger-animation>*:nth-child(4) {
    animation-delay: 0.4s;
}

.stagger-animation>*:nth-child(5) {
    animation-delay: 0.5s;
}

.stagger-animation>*:nth-child(6) {
    animation-delay: 0.6s;
}

/* ================================
   Responsive Adjustments
   ================================ */
@media (max-width: 768px) {
    .hero-modern {
        min-height: 400px;
    }

    .hero-content {
        padding: var(--space-xl);
    }

    .nav-modern {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .product-card-content {
        padding: var(--space-md);
    }
}

/* ================================
   Loader Animation
   ================================ */
.loader-modern {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-orange);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ================================
   Toast Notifications
   ================================ */
.toast-modern {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    background: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: var(--z-tooltip);
    animation: slideInRight 0.3s ease;
}

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

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

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}