/* ============================================
   VAYUPAKSHA AEROSPACE - UI PATTERN LIBRARY
   Reusable Modern Components
   ============================================ */

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

/* Modern Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: var(--surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-4) var(--space-6);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(13, 13, 13, 0.95);
    box-shadow: var(--shadow-lg);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.navbar-logo img {
    height: 40px;
    width: auto;
}

.navbar-logo-text {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-2) var(--space-3);
    transition: color var(--transition-base);
    position: relative;
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-silver);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--text-primary);
}

.navbar-link:hover::after,
.navbar-link.active::after {
    width: 100%;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.navbar-cart {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--surface-hover);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.navbar-cart:hover {
    background: var(--hover-lift);
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.navbar-cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    background: var(--color-silver);
    color: var(--color-charcoal);
    font-size: 10px;
    font-weight: var(--font-bold);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile Navbar */
.navbar-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
}

.navbar-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-secondary);
    transition: all var(--transition-base);
}

@media (max-width: 768px) {
    .navbar-links {
        display: none;
    }
    
    .navbar-mobile-toggle {
        display: flex;
    }
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(128, 128, 128, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(128, 128, 128, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-hero);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

.hero-title span {
    color: var(--color-silver);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    max-width: 100%;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

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

/* Hero Minimal */
.hero-minimal {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px var(--space-6) var(--space-12);
    background: var(--bg-primary);
}

@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
}

/* ============================================
   PRODUCT CARD PATTERNS
   ============================================ */

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
}

/* Product Card */
.product-card {
    background: var(--surface-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-smooth);
    position: relative;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-strong);
}

.product-card-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.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(1.05);
}

.product-card-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    padding: var(--space-1) var(--space-3);
    background: var(--color-charcoal);
    color: var(--text-secondary);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
}

.product-card-content {
    padding: var(--space-5);
}

.product-card-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.product-card-price {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-silver);
    margin-bottom: var(--space-4);
}

.product-card-actions {
    display: flex;
    gap: var(--space-3);
}

.product-card .btn {
    flex: 1;
    padding: var(--space-3);
    font-size: var(--text-sm);
}

/* ============================================
   GRID SYSTEMS
   ============================================ */

/* Section Grid */
.section {
    padding: var(--space-section) var(--space-6);
    background: var(--bg-primary);
}

.section-dark {
    background: var(--bg-secondary);
}

.section-subtle {
    background: var(--bg-subtle);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Grid Layouts */
.grid-featured {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-8);
}

.grid-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.grid-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
}

@media (max-width: 1024px) {
    .grid-featured,
    .grid-split {
        grid-template-columns: 1fr;
    }
    
    .grid-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .grid-features {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   BUTTON SYSTEMS
   ============================================ */

/* Button Sizes */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-xl);
}

/* Button Variants */
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--hover-surface);
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.btn-solid {
    background: var(--color-silver);
    color: var(--color-charcoal);
    border-color: var(--color-ash);
}

.btn-solid:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-tech-md);
}

/* ============================================
   FORM CONTROLS
   ============================================ */

/* Input Field */
.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--text-base);
    transition: all var(--transition-base);
}

.form-input::placeholder {
    color: var(--text-subtle);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-silver);
    box-shadow: 0 0 0 3px rgba(128, 128, 128, 0.1);
}

/* Form Group */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

/* Form Row */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   BADGES
   ============================================ */

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

.badge-primary {
    background: var(--color-silver);
    color: var(--color-charcoal);
    border-color: var(--color-ash);
}

.badge-outline {
    background: transparent;
    border: 1px solid var(--border-default);
}

/* Trust Badge */
.trust-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--surface-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.trust-badge:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
}

.trust-badge-icon {
    font-size: var(--text-3xl);
    line-height: 1;
}

.trust-badge-text {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

/* ============================================
   TECH SPECS TABLE
   ============================================ */

/* Spec Table */
.spec-table {
    width: 100%;
    border-collapse: collapse;
}

.spec-table th,
.spec-table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}

.spec-table th {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-subtle);
}

.spec-table td {
    color: var(--text-secondary);
    font-size: var(--text-base);
}

.spec-table tr:last-child td {
    border-bottom: none;
}

.spec-table tr:hover td {
    background: var(--hover-surface);
}

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

/* Feature Card */
.feature-card {
    padding: var(--space-8);
    background: var(--surface-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    transition: all var(--transition-smooth);
}

.feature-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-size: var(--text-2xl);
    margin-bottom: var(--space-5);
}

.feature-card-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.feature-card-description {
    font-size: var(--text-base);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
}

/* ============================================
   GLASS PANELS
   ============================================ */

/* Glass Panel */
.glass-panel {
    background: var(--surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}

.glass-panel-hover {
    transition: all var(--transition-base);
}

.glass-panel-hover:hover {
    background: rgba(30, 30, 30, 0.8);
    border-color: var(--border-default);
}

/* ============================================
   SECTION WRAPPERS
   ============================================ */

/* Section Header */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
}

/* ============================================
   CTA BLOCKS
   ============================================ */

/* CTA Strip */
.cta-strip {
    padding: var(--space-16) var(--space-6);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    text-align: center;
}

.cta-strip-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-strip-title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.cta-strip-description {
    font-size: var(--text-lg);
    color: var(--text-muted);
    margin-bottom: var(--space-8);
}

/* CTA Box */
.cta-box {
    padding: var(--space-12);
    background: var(--surface-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-steel), var(--color-silver), var(--color-steel));
}

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

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
    padding: var(--space-16) var(--space-6) var(--space-8);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.footer-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-5);
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-text {
    color: var(--text-muted);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-2);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer-copyright {
    color: var(--text-subtle);
    font-size: var(--text-sm);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

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

/* Service Card */
.service-card {
    background: var(--surface-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-smooth);
}

.service-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-card-image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-tertiary);
}

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

.service-card:hover .service-card-image img {
    transform: scale(1.05);
}

.service-card-content {
    padding: var(--space-6);
}

.service-card-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.service-card-description {
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

/* ============================================
   CONTACT FORM
   ============================================ */

/* Contact Form */
.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}

.contact-form-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

/* ============================================
   RESPONSIVE PATTERNS
   ============================================ */

@media (max-width: 640px) {
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card,
    .service-card {
        padding: var(--space-6);
    }
}