/* ============================================
   TIRUPUR APPAREL EXPORTS - ENHANCED STYLES
   Modern, Mobile-First, Micro-Interactions
   ============================================ */

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

:root {
    /* Enhanced Color Palette - Warmer, More Modern */
    --primary-color: #1a365d; /* Deep Navy Blue - warmer */
    --primary-light: #2d4a7c;
    --primary-dark: #0f1f3d;
    --secondary-color: #ff6b35; /* Vibrant Orange */
    --secondary-light: #ff8456;
    --secondary-dark: #e55423;
    --accent-color: #10b981; /* Green for sustainability */
    --text-dark: #1e293b; /* Dark charcoal instead of pure black */
    --text-medium: #475569;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-lighter: #ffffff;
    --border-light: #e2e8f0;
    
    /* Spacing System */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography Scale */
    --font-xs: 0.875rem;
    --font-sm: 1rem;
    --font-md: 1.125rem;
    --font-lg: 1.25rem;
    --font-xl: 1.5rem;
    --font-2xl: 2rem;
    --font-3xl: 2.5rem;
    --font-4xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--bg-lighter);
    font-size: var(--font-sm);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h2 {
    color: var(--primary-color);
    font-size: var(--font-xl);
    font-weight: 700;
    letter-spacing: -0.5px;
    transition: color var(--transition-fast);
}

.nav-brand h2:hover {
    color: var(--secondary-color);
}

/* Hamburger Menu Button (Mobile Only) */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-close {
    display: none;
}

.close-btn {
    display: none;
}

.nav-overlay {
    display: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: var(--font-sm);
    position: relative;
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) 0;
}

/* Animated underline on hover */
.nav-menu a:not(.btn-primary-small)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width var(--transition-base);
}

.nav-menu a:not(.btn-primary-small):hover {
    color: var(--secondary-color);
}

.nav-menu a:not(.btn-primary-small):hover::after {
    width: 100%;
}

.btn-primary-small {
    background: var(--secondary-color);
    color: var(--bg-lighter) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 8px;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.2);
}

.btn-primary-small:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 16px rgba(255, 107, 53, 0.35);
    background: var(--secondary-dark);
}

.btn-primary-small:active {
    transform: translateY(0) scale(1.02);
}

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

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, #3b5998 100%);
    color: var(--bg-lighter);
    padding: var(--spacing-3xl) 0 var(--spacing-3xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Subtle animated background pattern */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: var(--font-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    letter-spacing: -1.5px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero-subtitle {
    font-size: var(--font-lg);
    opacity: 0.92;
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    font-weight: 400;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

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

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    font-size: var(--font-md);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--secondary-color);
    color: var(--bg-lighter);
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    background: var(--secondary-dark);
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1.01);
}

.btn-secondary {
    background: var(--bg-lighter);
    color: var(--primary-color);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background: var(--bg-light);
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-secondary:active {
    transform: translateY(-1px) scale(1.01);
}

.btn-secondary svg {
    transition: transform var(--transition-fast);
}

.btn-secondary:hover svg {
    transform: rotate(10deg) scale(1.1);
}

.btn-text {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-text:hover {
    color: var(--secondary-color);
    transform: translateX(4px);
}

.btn-text-white {
    color: var(--bg-lighter);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-text-white:hover {
    opacity: 0.85;
    transform: translateX(4px);
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-lighter);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-lighter) 100%);
    padding: var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
    transition: all var(--transition-slow);
    border: 1px solid var(--border-light);
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

.feature-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
    background: var(--bg-lighter);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
    transition: transform var(--transition-base);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
}

.feature-card h3 {
    color: var(--primary-color);
    font-size: var(--font-xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: var(--font-sm);
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

.products {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: var(--font-3xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-2xl);
    font-weight: 800;
    letter-spacing: -1px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    background: var(--bg-lighter);
    padding: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-slow);
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.product-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
    transition: transform var(--transition-base);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.product-card:hover .product-icon {
    transform: scale(1.2) rotate(-5deg);
}

.product-card h3 {
    color: var(--primary-color);
    font-size: var(--font-2xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.product-card ul {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.product-card ul li {
    padding: var(--spacing-xs) 0;
    color: var(--text-light);
    font-size: var(--font-sm);
    line-height: 1.6;
    position: relative;
    padding-left: var(--spacing-md);
}

.product-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.product-card ul li strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* ============================================
   CERTIFICATIONS BANNER
   ============================================ */

.certifications-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, #2d4a7c 100%);
    color: var(--bg-lighter);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.certifications-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.certifications-banner h2 {
    font-size: var(--font-3xl);
    margin-bottom: var(--spacing-xl);
    font-weight: 800;
    position: relative;
    z-index: 1;
}

.cert-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.cert-badge {
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
    font-size: var(--font-sm);
}

.cert-badge:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.certifications-banner p {
    font-size: var(--font-md);
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    color: var(--bg-lighter);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.cta h2 {
    font-size: var(--font-3xl);
    margin-bottom: var(--spacing-md);
    font-weight: 800;
    position: relative;
    z-index: 1;
    letter-spacing: -1px;
}

.cta p {
    font-size: var(--font-lg);
    opacity: 0.95;
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.cta .btn-primary {
    background: var(--bg-lighter);
    color: var(--secondary-color);
}

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

.cta .btn-secondary {
    background: transparent;
    border: 2px solid var(--bg-lighter);
    color: var(--bg-lighter);
}

.cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--bg-lighter);
}

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

.footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-col h3 {
    color: var(--bg-lighter);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-md);
    font-weight: 600;
}

.footer-col p {
    font-size: var(--font-sm);
    line-height: 1.8;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-col a:hover {
    color: var(--secondary-color);
    transform: translateX(4px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-xs);
}

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

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

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

/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* Mobile (< 768px) */
@media (max-width: 767px) {
    :root {
        --font-4xl: 2rem;
        --font-3xl: 1.75rem;
        --font-2xl: 1.5rem;
        --spacing-3xl: 3rem;
        --spacing-2xl: 2.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Compact Navbar on Mobile */
    .navbar {
        padding: var(--spacing-sm) 0;
    }
    
    .navbar .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav-brand h2 {
        font-size: 1rem;
        line-height: 1.2;
    }
    
    /* Show Hamburger on Mobile */
    .hamburger {
        display: flex;
    }
    
    /* Mobile Slide-In Menu */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-lighter);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 0;
        padding: var(--spacing-xl) 0;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: right var(--transition-base);
        z-index: 1002;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    /* Close Button */
    .nav-close {
        display: block;
        text-align: right;
        padding: 0 var(--spacing-lg) var(--spacing-md);
    }
    
    .close-btn {
        display: inline-block;
        background: transparent;
        border: none;
        font-size: 2.5rem;
        line-height: 1;
        color: var(--text-dark);
        cursor: pointer;
        padding: 0;
        width: 40px;
        height: 40px;
        transition: all var(--transition-fast);
    }
    
    .close-btn:hover {
        color: var(--secondary-color);
        transform: rotate(90deg);
    }
    
    /* Menu Items */
    .nav-menu li:not(.nav-close) {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-menu a {
        display: block;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        text-align: left;
        font-size: var(--font-md);
        font-weight: 500;
    }
    
    .nav-menu a:not(.btn-primary-small)::after {
        display: none;
    }
    
    .nav-menu a:not(.btn-primary-small):hover {
        background: var(--bg-light);
    }
    
    /* Get Quote Button in Menu */
    .nav-menu .btn-primary-small {
        margin: var(--spacing-md) var(--spacing-lg);
        text-align: center;
        border-radius: 8px;
    }
    
    /* Dark Overlay */
    .nav-overlay {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(2px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 1001;
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero h1 {
        font-size: var(--font-2xl);
        margin-bottom: var(--spacing-md);
    }
    
    .hero-subtitle {
        font-size: var(--font-sm);
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn-primary,
    .hero-buttons .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: var(--font-2xl);
        margin-bottom: var(--spacing-lg);
    }
    
    .features-grid,
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .feature-card,
    .product-card {
        padding: var(--spacing-lg);
    }
    
    .cert-badges {
        gap: var(--spacing-sm);
    }
    
    .cert-badge {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-xs);
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-buttons .btn-primary,
    .cta-buttons .btn-secondary {
        width: 100%;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

/* Tablet (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero h1 {
        font-size: var(--font-3xl);
    }
}

/* Large Desktop (> 1400px) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .hero h1 {
        font-size: 3.5rem;
    }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero-buttons,
    .cta-buttons,
    .btn-text,
    .btn-text-white {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
}