/* ==========================================
   DEEP OCEAN VOLT - Hydro, Solar, Wind Energy
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Deep Ocean Volt Palette */
    --deep-ocean: #003049;
    --ocean-dark: #001F3F;
    --ocean-mid: #004566;
    --electric-volt: #D9FF00;
    --volt-glow: #E5FF33;
    --seafoam: #95D5B2;
    --soft-mint: #B8E0D2;
    --ice-white: #F1FAEE;
    
    /* Neutrals */
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #E2E8F0;
    --mid-gray: #8892A6;
    --dark-gray: #3D4451;
    
    /* Gradients */
    --gradient-ocean: linear-gradient(135deg, var(--deep-ocean) 0%, var(--ocean-mid) 100%);
    --gradient-volt: linear-gradient(135deg, var(--electric-volt) 0%, var(--volt-glow) 100%);
    
    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Effects */
    --shadow-sm: 0 2px 4px rgba(0, 48, 73, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 48, 73, 0.12);
    --shadow-lg: 0 12px 24px rgba(0, 48, 73, 0.15);
    --shadow-volt: 0 0 24px rgba(217, 255, 0, 0.4);
    
    /* Animation */
    --ease: cubic-bezier(0.4, 0.0, 0.2, 1);
}

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

.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================
   NAVIGATION
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--light-gray);
    z-index: 1000;
    transition: all 0.3s var(--ease);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
}

.logo {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--deep-ocean);
    text-decoration: none;
    transition: all 0.3s var(--ease);
}

.logo:hover {
    color: var(--ocean-mid);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s var(--ease);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--electric-volt);
    transition: width 0.3s var(--ease);
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    padding: 6.8rem 0 4.25rem;
    background: var(--gradient-ocean);
    position: relative;
    overflow: hidden;
    margin-top: 70px;
}

.hero-bg-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(217, 255, 0, 0.12) 0%, transparent 70%);
    pointer-events: none;
    animation: float 20s ease-in-out infinite;
}

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

.hero-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(217, 255, 0, 0.15);
    border: 1px solid rgba(217, 255, 0, 0.3);
    border-radius: 100px;
    color: var(--electric-volt);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 2.55rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--white);
    margin-bottom: 1rem;
}

.highlight-text {
    color: var(--electric-volt);
}

.hero-description {
    font-size: 0.96rem;
    line-height: 1.55;
    color: var(--soft-mint);
    margin-bottom: 1.7rem;
    max-width: 700px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.64rem;
    padding: 0.85rem 1.7rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    transition: all 0.3s var(--ease);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--electric-volt);
    color: var(--deep-ocean);
    box-shadow: var(--shadow-volt);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(217, 255, 0, 0.6);
    background: var(--volt-glow);
}

.btn-launch {
    background: var(--electric-volt);
    color: var(--deep-ocean);
    padding: 0.96rem 1.9rem;
    font-size: 0.9rem;
}

.btn-launch:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(217, 255, 0, 0.4);
}

.btn-arrow {
    font-size: 1.25rem;
    transition: transform 0.3s var(--ease);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* ==========================================
   SECTIONS
   ========================================== */
.models-section {
    padding: 3.4rem 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 2.1rem;
}

.section-tag {
    display: inline-block;
    padding: 0.43rem 0.96rem;
    background: var(--electric-volt);
    color: var(--deep-ocean);
    font-size: 0.69rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 5px;
    margin-bottom: 1.06rem;
    font-family: var(--font-mono);
}

.section-title {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--deep-ocean);
    margin-bottom: 0.74rem;
}

.section-description {
    font-size: 1.06rem;
    color: var(--mid-gray);
    max-width: 650px;
    margin: 0 auto;
}

/* ==========================================
   FEATURED MODELS
   ========================================== */
.models-showcase {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.featured-model {
    background: var(--ice-white);
    border-radius: 17px;
    padding: 2.1rem;
    border: 2px solid transparent;
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}

.featured-model::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--gradient-volt);
    opacity: 0;
    transition: opacity 0.4s var(--ease);
}

.featured-model:hover {
    border-color: var(--seafoam);
    box-shadow: var(--shadow-lg);
}

.featured-model:hover::before {
    opacity: 1;
}

.model-badge {
    display: inline-block;
    padding: 0.32rem 0.85rem;
    background: var(--gradient-volt);
    color: var(--deep-ocean);
    font-size: 0.64rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 100px;
    margin-bottom: 1.7rem;
}

.model-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.55rem;
    align-items: center;
}

.model-text h3 {
    font-size: 1.38rem;
    font-weight: 700;
    color: var(--deep-ocean);
    margin-bottom: 0.74rem;
    line-height: 1.2;
}

.model-tagline {
    font-size: 0.85rem;
    color: var(--dark-gray);
    margin-bottom: 1.28rem;
    line-height: 1.55;
}

.model-features {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 1.7rem;
}

.feature-item {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
}

.feature-icon {
    font-size: 1.49rem;
    flex-shrink: 0;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.feature-text strong {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--deep-ocean);
}

.feature-text span {
    font-size: 0.8rem;
    color: var(--mid-gray);
}

.model-preview {
    background: var(--white);
    border-radius: 14px;
    padding: 2.1rem;
    border: 2px solid var(--light-gray);
}

.preview-metrics {
    display: flex;
    flex-direction: column;
    gap: 1.7rem;
}

.metric-item {
    padding-bottom: 1.28rem;
    border-bottom: 1px solid var(--light-gray);
}

.metric-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.metric-value {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--deep-ocean);
    font-family: var(--font-mono);
    margin-bottom: 0.32rem;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--mid-gray);
    font-weight: 600;
}

/* ==========================================
   BLOG SECTION
   ========================================== */
.blog-section {
    padding: 5.1rem 0;
    background: var(--ice-white);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s var(--ease);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--seafoam);
}

.blog-meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--mid-gray);
    font-family: var(--font-mono);
}

.blog-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--deep-ocean);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.blog-card p {
    color: var(--dark-gray);
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.blog-card a {
    color: var(--ocean-mid);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.2s var(--ease);
}

.blog-card a:hover {
    color: var(--deep-ocean);
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about-section {
    padding: 5.1rem 0;
    background: var(--white);
}

.about-grid {
    max-width: 900px;
    margin: 0 auto;
}

.about-text h2 {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--deep-ocean);
    margin-bottom: 2rem;
    margin-top: 1rem;
}

.about-text h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--deep-ocean);
    margin: 3rem 0 1.5rem;
}

.about-intro {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.about-text p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
}

.reason-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin: 2.5rem 0 3rem;
}

.reason-card {
    background: var(--ice-white);
    padding: 2.5rem;
    border-radius: 16px;
    border-left: 4px solid var(--seafoam);
    transition: all 0.3s var(--ease);
}

.reason-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--electric-volt);
}

.reason-number {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--ocean-mid);
    font-family: var(--font-mono);
    margin-bottom: 1rem;
}

.reason-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--deep-ocean);
    margin-bottom: 0.75rem;
}

.reason-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--dark-gray);
    margin: 0;
}

.experience-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
}

.experience-list li {
    padding: 1rem 0;
    padding-left: 1.5rem;
    border-left: 2px solid var(--seafoam);
    margin-bottom: 1.25rem;
    position: relative;
}

.experience-list li::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 1.5rem;
    width: 8px;
    height: 8px;
    background: var(--seafoam);
    border-radius: 50%;
}

.about-contact {
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 2px solid var(--light-gray);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--ice-white);
    border: 2px solid var(--light-gray);
    border-radius: 12px;
    text-decoration: none;
    color: var(--deep-ocean);
    font-weight: 600;
    transition: all 0.3s var(--ease);
}

.contact-link:hover {
    border-color: var(--seafoam);
    background: var(--white);
    transform: translateX(4px);
}

.contact-icon {
    font-size: 1.5rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--gradient-ocean);
    color: var(--soft-mint);
    padding: 3rem 0;
}

.footer-content {
    text-align: center;
}

.footer-text p {
    margin: 0.375rem 0;
    color: var(--soft-mint);
}

.footer-location {
    color: var(--electric-volt);
    font-weight: 600;
    font-family: var(--font-mono);
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
    .model-content {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 1.5rem;
    }
    
    .hero {
        padding: 8rem 0 4rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .featured-model {
        padding: 2rem;
    }
    
    .model-content {
        gap: 2rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

html {
    scroll-behavior: smooth;
}