/* ===================================
   Vaishnavi Buildcon - Premium Styles
   =================================== */

/* === CSS Variables & Design System === */
:root {
    /* Premium Color Palette */
    --primary-gold: #D4AF37;
    --primary-dark: #1a1a2e;
    --primary-blue: #16213e;
    --secondary-blue: #0f3460;
    --accent-gold: #F4C430;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --text-dark: #2c2c2c;
    --text-light: #666666;
    --white: #ffffff;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Playfair Display', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-smooth: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.2);
    --shadow-gold: 0 4px 20px rgba(212,175,55,0.3);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--white);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

ul, ol {
    list-style: none;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
    font-size: 1.1rem;
}

/* === Container & Layout === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-dark {
    background-color: var(--primary-dark);
    color: var(--white);
}

.section-light {
    background-color: var(--light-gray);
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background-color: rgba(26, 26, 46, 1);
}

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

.logo {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-gold);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-subtitle {
    font-size: 0.9rem;
    color: var(--white);
    font-family: var(--font-primary);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-gold);
    transition: var(--transition-smooth);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-gold);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background-color: var(--primary-gold);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
    font-family: var(--font-primary);
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(212,175,55,0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--primary-gold);
}

.btn-secondary:hover {
    background-color: var(--primary-gold);
    color: var(--primary-dark);
    transform: translateY(-3px);
}

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

.btn-dark:hover {
    background-color: var(--primary-blue);
    transform: translateY(-3px);
}

/* === Hero Section === */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        linear-gradient(rgba(15, 15, 35, 0.72), rgba(15, 15, 35, 0.80)),
        url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?w=1920&q=80&fit=crop') center/cover no-repeat;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(26, 26, 46, 0.3), rgba(22, 33, 62, 0.3)),
        url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(212,175,55,0.07)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 var(--spacing-md);
    animation: fadeInUp 1s ease;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.hero-highlight {
    color: var(--primary-gold);
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

/* === Section Headers === */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.section-subtitle {
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-gold);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
}

.section-dark .section-description {
    color: var(--medium-gray);
}

/* === Cards & Features === */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--white);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    border: 1px solid var(--medium-gray);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-gold), var(--accent-gold));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: 2rem;
    color: var(--primary-dark);
    box-shadow: var(--shadow-gold);
}

.card-icon i {
    color: var(--primary-dark);
}

.card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

/* Ensure all FontAwesome icons are visible */
i.fas, i.fab, i.far, i.fal {
    font-family: 'Font Awesome 6 Free', 'Font Awesome 6 Brands' !important;
    font-weight: 900;
    font-style: normal;
}

.card p {
    font-size: 1rem;
}

/* === Footer === */
.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    color: var(--primary-gold);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.footer-section p,
.footer-section a {
    color: var(--medium-gray);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.footer-section p i {
    color: var(--primary-gold);
    min-width: 20px;
}

.footer-section a:hover {
    color: var(--primary-gold);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    color: var(--white);
    font-size: 1.1rem;
}

.social-link i {
    color: var(--white);
}

.social-link:hover {
    background-color: var(--primary-gold);
    transform: translateY(-3px);
}

.social-link:hover i {
    color: var(--primary-dark);
}

.footer-bottom {
    border-top: 1px solid var(--primary-blue);
    padding-top: var(--spacing-sm);
    text-align: center;
    color: var(--text-light);
}

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

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

.fade-in {
    animation: fadeIn 1s ease;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .menu-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        background-color: var(--primary-dark);
        flex-direction: column;
        padding: 5rem 2rem;
        gap: var(--spacing-sm);
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-lg);
        align-items: flex-start;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hero {
        min-height: 500px;
        padding: 0;
    }
    
    .hero-content {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        padding: 0.9rem 2rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-section p,
    .footer-section a {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* CTA Section Mobile */
    .section-dark .container > div[style*="display: flex"] {
        gap: 1rem !important;
    }
    
    /* Contact Page Specific */
    .contact-info-card {
        padding: var(--spacing-md) !important;
    }
    
    .contact-item {
        flex-direction: row;
        text-align: left;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .navbar {
        padding: 0.8rem 0;
    }
    
    .navbar .container {
        padding: 0 1rem;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .logo img {
        height: 35px;
    }
    
    .hero {
        min-height: 450px;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .hero-buttons {
        gap: 0.8rem;
    }
    
    .section {
        padding: 2.5rem 0;
    }
    
    .section-header {
        margin-bottom: 1.5rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.4rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
        max-width: 100%;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .card-grid {
        gap: 1rem;
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
        font-size: 1.8rem;
    }
    
    /* Footer mobile adjustments */
    .footer {
        padding: 2.5rem 0 1.5rem;
    }
    
    .footer-content {
        gap: 2rem;
    }
    
    .footer-section h3 {
        font-size: 1.2rem;
    }
    
    .social-links {
        margin-top: 1rem;
    }
    
    .social-link {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
    
    /* Contact page mobile */
    .contact-info-card {
        padding: 1.5rem !important;
    }
    
    .contact-icon {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    /* Form adjustments */
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 0.8rem;
        font-size: 1rem;
    }
}