/* 
 * Hobson Tiles - Style Sheet
 * Version 1.2 - 27 November 2025 - Simplified tile images
 * Premium solar tile product website
 */

/* ========================================
   CSS VARIABLES & RESET
   ======================================== */
:root {
    /* Core colors */
    --color-bg: #0a0a0a;
    --color-bg-alt: #111111;
    --color-bg-card: #161616;
    --color-bg-elevated: #1a1a1a;
    
    /* Text colors */
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-text-subtle: #555555;
    
    /* Accent colors */
    --color-solar: #F59E0B;
    --color-solar-light: #FBBF24;
    --color-solar-dark: #D97706;
    --color-copper: #B87333;
    --color-copper-light: #CD7F32;
    
    /* Semantic colors */
    --color-hot: #EF4444;
    --color-cold: #3B82F6;
    --color-success: #10B981;
    
    /* Gradients */
    --gradient-solar: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0a 0%, #111111 100%);
    --gradient-card: linear-gradient(135deg, #1a1a1a 0%, #111111 100%);
    
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Archivo', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Sizing */
    --container-max: 1400px;
    --section-padding: 120px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   UTILITIES
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--gradient-solar);
    color: #000;
    box-shadow: 0 4px 24px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(245, 158, 11, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-text-subtle);
}

.btn-secondary:hover {
    border-color: var(--color-solar);
    color: var(--color-solar);
}

.btn-full {
    width: 100%;
}

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.2em;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.btn-nav {
    padding: 10px 24px;
    background: var(--gradient-solar);
    color: #000 !important;
    border-radius: var(--border-radius);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        var(--color-bg);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content {
    padding: 0 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-solar);
    margin-bottom: 32px;
}

.hero-badge svg {
    width: 16px;
    height: 16px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(48px, 6vw, 80px);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title-line {
    display: block;
}

.hero-title-line.accent {
    color: var(--color-solar);
    font-style: italic;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: 48px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-bottom: 48px;
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-solar);
}

.stat-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.hero-cta {
    display: flex;
    gap: 16px;
}

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px;
    position: relative;
}

.tile-showcase {
    position: relative;
    perspective: 1000px;
}

.tile-3d {
    width: 350px;
    height: 280px;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(-15deg) rotateY(-25deg);
    animation: tileFloat 6s ease-in-out infinite;
}

@keyframes tileFloat {
    0%, 100% { transform: rotateX(-15deg) rotateY(-25deg) translateY(0); }
    50% { transform: rotateX(-12deg) rotateY(-20deg) translateY(-20px); }
}

.tile-face {
    position: absolute;
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tile-front {
    width: 100%;
    height: 100%;
    transform: translateZ(12px);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.pv-cells {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 4px;
    padding: 20px;
    height: 100%;
}

.cell {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1f33 100%);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.cell::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        transparent 0%,
        rgba(255, 255, 255, 0.05) 50%,
        transparent 100%
    );
}

.cell::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 1px;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
}

.tile-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.2) 0%,
        transparent 40%,
        transparent 60%,
        rgba(255, 255, 255, 0.05) 100%
    );
    pointer-events: none;
}

.tile-side {
    width: 24px;
    height: 100%;
    right: -12px;
    transform: rotateY(90deg) translateZ(175px);
    background: linear-gradient(180deg, #B87333 0%, #8B5A2B 100%);
}

.tile-bottom {
    width: 100%;
    height: 24px;
    bottom: -12px;
    transform: rotateX(-90deg) translateZ(140px);
    background: linear-gradient(90deg, #2a2a2a 0%, #1a1a1a 100%);
}

.tile-labels {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.label {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.label-line {
    width: 40px;
    height: 1px;
    background: var(--color-text-subtle);
}

.label-glass {
    top: 20px;
    right: -140px;
}

.label-cells {
    top: 50%;
    right: -160px;
}

.label-thermal {
    bottom: 20px;
    right: -150px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator svg {
    width: 20px;
    height: 20px;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
    max-width: 600px;
    margin-bottom: 80px;
}

.section-header.light {
    color: var(--color-text);
}

.section-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-solar);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 24px;
}

.section-title em {
    font-style: italic;
    color: var(--color-solar);
}

.section-desc {
    font-size: 18px;
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* ========================================
   TECHNOLOGY SECTION
   ======================================== */
.technology {
    background: var(--color-bg-alt);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.tech-card {
    padding: 40px 32px;
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

.tech-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
    transform: translateY(-4px);
}

.tech-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    color: var(--color-text);
}

.tech-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.tech-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* Temperature Chart */
.temp-efficiency {
    padding: 48px;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
}

.temp-efficiency h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 32px;
    text-align: center;
}

.temp-chart {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    height: 280px;
    align-items: end;
}

.temp-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.zone-bar {
    width: 100%;
    max-width: 80px;
    border-radius: 8px 8px 0 0;
    transition: height 0.8s ease;
}

.temp-zone.optimal .zone-bar {
    background: linear-gradient(180deg, var(--color-success) 0%, #059669 100%);
}

.temp-zone.acceptable .zone-bar {
    background: linear-gradient(180deg, var(--color-solar) 0%, var(--color-solar-dark) 100%);
}

.temp-zone.degraded .zone-bar {
    background: linear-gradient(180deg, #F97316 0%, #EA580C 100%);
}

.temp-zone.critical .zone-bar {
    background: linear-gradient(180deg, var(--color-hot) 0%, #DC2626 100%);
}

.zone-label {
    font-size: 14px;
    font-weight: 600;
    margin-top: 8px;
}

.zone-status {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.zone-loss {
    font-size: 12px;
    color: var(--color-text-subtle);
}

.temp-note {
    text-align: center;
    margin-top: 32px;
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ========================================
   TILE RANGE SECTION
   ======================================== */
.tiles-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 80px;
}

.tile-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.tile-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
}

.tile-card.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.tile-image {
    position: relative;
    min-height: 280px;
    background: var(--color-bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tile-card.featured .tile-image {
    min-height: 350px;
}

.tile-visual {
    width: 200px;
    height: 160px;
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.tile-card.featured .tile-visual {
    width: 280px;
    height: 220px;
}

.visual-grid {
    display: grid;
    gap: 3px;
    padding: 12px;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #0f0f0f 100%);
}

.interlock .visual-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.plain .visual-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: 1fr;
    padding: 20px;
}

.roman .visual-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.pantile .visual-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.visual-grid .grid-cell {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1f33 100%);
    border-radius: 2px;
    position: relative;
}

.visual-grid .grid-cell::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.roman .grid-cell {
    border-radius: 4px 4px 2px 2px;
}

.pantile .grid-cell {
    border-radius: 8px 2px 2px 8px;
    background: linear-gradient(90deg, #1e3a5f 0%, #0f1f33 50%, #1e3a5f 100%);
}

/* Tile Photo Styles */
.tile-photo-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.tile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.95) contrast(1.05);
    transition: all var(--transition-base);
}

.tile-card:hover .tile-photo {
    filter: brightness(1) contrast(1.1);
    transform: scale(1.05);
}

.original-format-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 50px 16px 14px;
    text-align: center;
}

.tile-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    background: var(--color-solar);
    color: #000;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 100px;
    z-index: 10;
}

.tile-content {
    padding: 32px;
}

.tile-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.tile-match {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.tile-match strong {
    color: var(--color-solar);
}

.tile-desc {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 24px;
}

.tile-specs {
    display: flex;
    gap: 24px;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 24px;
}

.spec {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.spec-value {
    font-size: 16px;
    font-weight: 700;
    font-family: var(--font-body);
}

.spec-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

/* Marley Comparison */
.marley-comparison {
    padding: 48px;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    text-align: center;
}

.marley-comparison h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.marley-comparison > p {
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.comparison-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
}

.comparison-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.comparison-image {
    width: 200px;
    height: 160px;
    border-radius: var(--border-radius);
    background-size: cover;
    background-position: center;
}

.marley-modern {
    background: linear-gradient(135deg, #4a4a4a 0%, #2a2a2a 100%);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.hobson-interlock {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1f33 100%);
    border: 2px solid var(--color-solar);
    position: relative;
    overflow: hidden;
}

.hobson-interlock::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, transparent 50%);
}

.comparison-label {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.comparison-item.hobson .comparison-label {
    color: var(--color-solar);
    font-weight: 600;
}

.comparison-arrow svg {
    width: 32px;
    height: 32px;
    color: var(--color-solar);
}

/* ========================================
   BENEFITS SECTION
   ======================================== */
.benefits {
    background: var(--color-solar);
    color: #000;
}

.benefits .section-tag {
    color: rgba(0, 0, 0, 0.6);
}

.benefits .section-title em {
    color: #000;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-card {
    padding: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.benefit-number {
    font-size: 48px;
    font-weight: 800;
    opacity: 0.2;
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.8;
}

/* ========================================
   HOW IT WORKS SECTION
   ======================================== */
.how-it-works {
    background: var(--color-bg-alt);
}

.system-diagram {
    margin-bottom: 80px;
}

.diagram-visual {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 48px;
}

.system-svg {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    display: block;
}

.system-svg text {
    fill: var(--color-text-muted);
    font-size: 12px;
    font-family: var(--font-body);
}

.system-svg .tile-svg {
    fill: linear-gradient(135deg, #1e3a5f 0%, #0f1f33 100%);
    stroke: var(--color-solar);
    stroke-width: 1;
}

.diagram-label {
    font-size: 11px;
}

.diagram-label.hot {
    fill: var(--color-hot);
}

.diagram-label.cold {
    fill: var(--color-cold);
}

.diagram-label.small {
    font-size: 10px;
}

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 80px;
}

.step {
    text-align: center;
    padding: 32px;
}

.step-number {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    background: var(--gradient-solar);
    color: #000;
    font-size: 24px;
    font-weight: 800;
    border-radius: 50%;
}

.step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.step p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* Configuration Options */
.config-options {
    text-align: center;
}

.config-options h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 32px;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.config-card {
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    position: relative;
}

.config-card.recommended {
    border-color: var(--color-solar);
}

.config-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--color-solar);
    color: #000;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 100px;
}

.config-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.config-visual {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
}

.config-visual span {
    width: 40px;
    height: 32px;
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1f33 100%);
    border-radius: 4px;
    border: 1px solid var(--color-solar);
}

.config-visual.series {
    flex-direction: row;
}

.config-visual.parallel {
    flex-wrap: wrap;
    max-width: 100px;
}

.config-visual.hybrid {
    flex-direction: column;
    gap: 8px;
}

.config-visual.hybrid div {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.config-card p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ========================================
   QUICK CONNECT SECTION
   ======================================== */
.quick-connect {
    background: var(--color-bg);
}

.connect-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.connect-text h2 {
    font-family: var(--font-display);
    font-size: clamp(36px, 4vw, 48px);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 24px;
}

.connect-text p {
    font-size: 16px;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 32px;
}

.connect-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.connect-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.connect-features svg {
    width: 20px;
    height: 20px;
    color: var(--color-solar);
    flex-shrink: 0;
}

.connect-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.connector-3d {
    perspective: 500px;
}

.connector-body {
    width: 200px;
    height: 80px;
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    transform: rotateX(-10deg) rotateY(15deg);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.connector-ring {
    width: 40px;
    height: 40px;
    border: 4px solid #888;
    border-radius: 50%;
    background: #333;
}

.connector-seal {
    width: 20px;
    height: 40px;
    background: #222;
    border-radius: 4px;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
    background: var(--color-bg-alt);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h2 {
    font-family: var(--font-display);
    font-size: clamp(36px, 4vw, 48px);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 24px;
}

.contact-info h2 em {
    font-style: italic;
    color: var(--color-solar);
}

.contact-info > p {
    font-size: 16px;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 16px;
}

.contact-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-solar);
}

/* Contact Form */
.contact-form {
    padding: 48px;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-family: inherit;
    font-size: 15px;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-solar);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-bg);
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--color-text-muted);
    padding: 6px 0;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-solar);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer-legal {
    margin-top: 8px;
    font-size: 12px;
    color: var(--color-text-subtle);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1200px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    :root {
        --section-padding: 80px;
    }
    
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .hero-content {
        padding: 0 24px;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .tiles-showcase {
        grid-template-columns: 1fr;
    }
    
    .tile-card.featured {
        grid-template-columns: 1fr;
    }
    
    .connect-content {
        grid-template-columns: 1fr;
    }
    
    .connect-visual {
        order: -1;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .config-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-grid {
        flex-direction: column;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    .tech-grid,
    .benefits-grid,
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .temp-chart {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .tile-specs {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 12px 24px;
        font-size: 13px;
    }
    
    .hero-content {
        padding: 0 16px;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
    
    .temp-chart {
        grid-template-columns: 1fr;
    }
}

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

.section-header,
.tech-card,
.tile-card,
.benefit-card,
.step {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

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

.benefit-card:nth-child(1) { animation-delay: 0.1s; }
.benefit-card:nth-child(2) { animation-delay: 0.15s; }
.benefit-card:nth-child(3) { animation-delay: 0.2s; }
.benefit-card:nth-child(4) { animation-delay: 0.25s; }
.benefit-card:nth-child(5) { animation-delay: 0.3s; }
.benefit-card:nth-child(6) { animation-delay: 0.35s; }
.benefit-card:nth-child(7) { animation-delay: 0.4s; }
.benefit-card:nth-child(8) { animation-delay: 0.45s; }