/* ============================================
   BULUT VINÇ - PREMIUM REDESIGN
   Industrial Strength | Trust-Focused | SEO-Optimized
   ============================================ */

/* === PREMIUM COLOR PALETTE === */
:root {
    /* Brand Colors - Industrial Strength */
    --color-black: #0E0E0E;
    --color-dark-gray: #1A1A1A;
    --color-industrial-yellow: #F5C400;
    --color-yellow-hover: #E6B800;
    --color-yellow-dark: #D4A600;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-gray-50: #F8F8F8;
    --color-gray-100: #E8E8E8;
    --color-gray-200: #D0D0D0;
    --color-gray-300: #B8B8B8;
    --color-gray-400: #909090;
    --color-gray-500: #686868;
    --color-gray-600: #484848;
    --color-gray-700: #303030;
    --color-gray-800: #202020;

    /* Gradients */
    --gradient-dark: linear-gradient(135deg, #0E0E0E 0%, #1A1A1A 100%);
    --gradient-hero: linear-gradient(135deg, rgba(14, 14, 14, 0.85) 0%, rgba(26, 26, 26, 0.75) 100%);
    --gradient-yellow: linear-gradient(135deg, #F5C400 0%, #E6B800 100%);

    /* Typography - Strong & Bold */
    --font-heading: 'Montserrat', 'Arial Black', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Font Sizes - Powerful Hierarchy */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: 4.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-8: 3rem;
    --space-10: 4rem;
    --space-12: 6rem;
    --space-16: 8rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows - Premium Depth */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
    --shadow-2xl: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-yellow: 0 4px 20px rgba(245, 196, 0, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET & BASE === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* === TYPOGRAPHY - STRONG & BOLD === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-black);
}

h1 {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-6);
}

h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-5);
}

h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
}

p {
    margin-bottom: var(--space-4);
    line-height: 1.8;
}

strong {
    font-weight: 700;
    color: var(--color-black);
}

/* === LAYOUT === */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-12) 0;
}

/* === HEADER - PREMIUM === */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-black);
    border-bottom: 2px solid var(--color-industrial-yellow);
    transition: all var(--transition-base);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-5) 0;
}

.logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 900;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-accent {
    color: var(--color-industrial-yellow);
}

.nav-menu {
    display: none;
    list-style: none;
    gap: var(--space-6);
}

.nav-menu li a {
    font-weight: 600;
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-white);
    transition: color var(--transition-fast);
    padding: var(--space-2) var(--space-3);
    border-bottom: 2px solid transparent;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--color-industrial-yellow);
    border-bottom-color: var(--color-industrial-yellow);
}

.mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--color-industrial-yellow);
    margin: 6px 0;
    transition: all var(--transition-base);
    border-radius: 2px;
}

/* === HERO SECTION - PREMIUM POWER === */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: var(--color-black);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-background img,
.hero-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-brand {
    font-size: var(--text-6xl);
    font-weight: 900;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-4);
    line-height: 1;
}

.hero-brand-accent {
    color: var(--color-industrial-yellow);
    display: block;
}

.hero h1 {
    font-size: var(--text-4xl);
    color: var(--color-white);
    font-weight: 700;
    margin-bottom: var(--space-6);
    line-height: 1.3;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-100);
    line-height: 1.8;
    margin-bottom: var(--space-8);
    max-width: 700px;
}

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

/* === BUTTONS - PREMIUM === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-yellow);
    color: var(--color-black);
    box-shadow: var(--shadow-yellow);
}

.btn-primary:hover {
    background: var(--color-yellow-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(245, 196, 0, 0.4);
    color: var(--color-black);
}

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: #25D366;
    color: var(--color-white);
}

.btn-whatsapp:hover {
    background: #1fb855;
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
    color: var(--color-white);
}

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

/* === TRUST BADGES - PREMIUM === */
.trust-section {
    background: var(--color-dark-gray);
    padding: var(--space-10) 0;
    margin-top: -1px;
}

.trust-badges {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.trust-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(245, 196, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    transition: all var(--transition-base);
}

.trust-badge:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-industrial-yellow);
    transform: translateY(-4px);
}

.trust-badge-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
}

.trust-badge h3 {
    color: var(--color-white);
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.trust-badge p {
    color: var(--color-gray-300);
    font-size: var(--text-sm);
    margin: 0;
}

/* === SECTION HEADERS - PREMIUM === */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-10);
}

.section-header h2 {
    font-size: var(--text-4xl);
    color: var(--color-black);
    margin-bottom: var(--space-4);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-yellow);
    border-radius: 2px;
}

.section-header p {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-top: var(--space-6);
}

/* === SERVICE CARDS - PREMIUM === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.service-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-yellow);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-industrial-yellow);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card-icon {
    font-size: 3rem;
    margin-bottom: var(--space-5);
}

.service-card h3 {
    font-size: var(--text-2xl);
    color: var(--color-black);
    margin-bottom: var(--space-4);
}

.service-card p {
    color: var(--color-gray-600);
    margin-bottom: var(--space-5);
    line-height: 1.8;
}

.service-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-black);
    font-weight: 700;
    text-transform: uppercase;
    font-size: var(--text-sm);
    letter-spacing: 0.05em;
    transition: gap var(--transition-base);
}

.service-card-link:hover {
    color: var(--color-industrial-yellow);
    gap: var(--space-3);
}

/* === CTA SECTION - PREMIUM POWER === */
.cta-section {
    background: var(--gradient-dark);
    color: var(--color-white);
    padding: var(--space-12) 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(245, 196, 0, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.cta-section h2 {
    color: var(--color-white);
    font-size: var(--text-4xl);
    margin-bottom: var(--space-3);
}

.cta-section .cta-highlight {
    color: var(--color-industrial-yellow);
}

.cta-section p {
    font-size: var(--text-xl);
    color: var(--color-gray-200);
    margin-bottom: var(--space-8);
}

.cta-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* === FOOTER - PREMIUM === */
.footer {
    background: var(--color-black);
    color: var(--color-gray-300);
    padding: var(--space-12) 0 var(--space-6);
    border-top: 2px solid var(--color-industrial-yellow);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h3 {
    color: var(--color-white);
    font-size: var(--text-xl);
    margin-bottom: var(--space-5);
}

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

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

.footer-section ul li a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--color-industrial-yellow);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    color: var(--color-gray-400);
}

.footer-contact a {
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--color-industrial-yellow);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--color-gray-500);
    font-size: var(--text-sm);
}

/* === RESPONSIVE === */
@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .hero-brand {
        font-size: var(--text-6xl);
    }

    .hero h1 {
        font-size: var(--text-5xl);
    }
}

@media (max-width: 767px) {
    .hero {
        min-height: 100vh;
        padding: var(--space-8) 0;
    }

    .hero-brand {
        font-size: var(--text-4xl);
    }

    .hero h1 {
        font-size: var(--text-3xl);
    }

    .hero-subtitle {
        font-size: var(--text-base);
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    .trust-badges {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* === UTILITY CLASSES === */
.bg-dark {
    background: var(--color-dark-gray);
}

.bg-black {
    background: var(--color-black);
}

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

.text-yellow {
    color: var(--color-industrial-yellow);
}