/* ============================================
   ZOLVEN GROUP - Modern Landing Page
   ============================================ */

:root {
    /* Color Palette - Warm & Professional */
    --color-primary: #c45c26;
    --color-primary-dark: #a34a1e;
    --color-primary-light: #e07a4a;
    --color-accent: #1a4d5c;
    --color-accent-light: #2d6b7c;
    
    /* Neutrals */
    --color-bg: #0f1214;
    --color-bg-elevated: #1a1e22;
    --color-bg-card: #23282d;
    --color-text: #e8eaed;
    --color-text-muted: #9ca3af;
    --color-border: rgba(255, 255, 255, 0.08);
    
    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    
    /* Spacing */
    --container-max: 1200px;
    --section-padding: clamp(4rem, 10vw, 8rem);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    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;
    transition: color var(--transition-fast), opacity var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   Language Toggle
   ============================================ */

.lang-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: var(--color-bg-elevated);
    padding: 0.35rem;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.lang-btn {
    padding: 0.4rem 0.75rem;
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 0.875rem;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--color-text);
}

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

.lang-divider {
    color: var(--color-border);
    font-size: 0.75rem;
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 0;
    transition: background var(--transition-smooth), backdrop-filter var(--transition-smooth);
}

.header.scrolled {
    background: rgba(15, 18, 20, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 60px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    border: none;
    box-shadow: 0 4px 20px rgba(196, 92, 38, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(196, 92, 38, 0.4);
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 6rem;
    overflow: hidden;
}

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

.hero-bg-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(196, 92, 38, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(26, 77, 92, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 0% 80%, rgba(196, 92, 38, 0.08), transparent);
}

.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;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    display: block;
}

.hero-title-accent {
    display: block;
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 540px;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.hero-scroll span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.5; }
}

/* ============================================
   Sections Common
   ============================================ */

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

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

/* ============================================
   Services Section
   ============================================ */

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-smooth);
    z-index: 2;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(196, 92, 38, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

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

.service-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    position: relative;
}

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

.service-content {
    padding: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* ============================================
   About Section
   ============================================ */

.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content .section-tag {
    margin-bottom: 1rem;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 1.5rem;
}

.about-text {
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.about-features {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.feature-check {
    color: var(--color-primary);
    font-weight: 700;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-image-wrapper {
    position: relative;
    display: inline-block;
}

.about-image {
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    max-width: 100%;
    height: auto;
}

.about-card {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 16px;
    padding: 1.5rem 2rem;
    text-align: center;
    box-shadow: 0 20px 40px rgba(196, 92, 38, 0.3);
}

.about-card-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.about-card-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
}

/* CEO Section */
.ceo-section {
    margin-top: 5rem;
    padding-top: 4rem;
    border-top: 1px solid var(--color-border);
}

.ceo-card {
    display: flex;
    align-items: center;
    gap: 3rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 2.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.ceo-image {
    flex-shrink: 0;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--color-primary);
    box-shadow: 0 10px 30px rgba(196, 92, 38, 0.2);
}

.ceo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ceo-content {
    flex: 1;
}

.ceo-name {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.ceo-role {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.ceo-bio {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   Contact Section
   ============================================ */

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

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.contact-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-smooth);
    display: block;
}

.contact-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.contact-card-address {
    cursor: default;
    pointer-events: none;
}

.contact-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.25rem;
    color: var(--color-primary);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.contact-card p {
    color: var(--color-text-muted);
}

.contact-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    padding: 4rem 0 2rem;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    text-align: center;
    margin-bottom: 3rem;
}

.logo-footer {
    display: inline-flex;
    margin-bottom: 1rem;
}

.logo-footer .logo-img {
    height: 70px;
}

.footer-tagline {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.footer-contact {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-contact a {
    color: var(--color-primary);
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-contact span {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-credit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    margin-top: 0.75rem;
}

.footer-credit .heart-icon {
    color: #e25555;
    animation: heartbeat 1.5s ease-in-out infinite;
}

.footer-credit a {
    color: var(--color-primary);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.footer-credit a:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* ============================================
   Animations
   ============================================ */

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

.hero-content .hero-title,
.hero-content .hero-subtitle,
.hero-content .hero-cta,
.hero-content .hero-stats {
    animation: fadeInUp 0.8s ease-out backwards;
}

.hero-content .hero-title { animation-delay: 0.1s; }
.hero-content .hero-subtitle { animation-delay: 0.2s; }
.hero-content .hero-cta { animation-delay: 0.3s; }
.hero-content .hero-stats { animation-delay: 0.5s; }

.service-card,
.contact-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

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

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .lang-toggle {
        top: 1rem;
        right: 1rem;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav.open .nav-links {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        z-index: 99;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-visual {
        order: -1;
    }

    .about-image-wrapper .about-card {
        position: relative;
        bottom: auto;
        left: auto;
        margin-top: -20px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .about-image {
        max-height: 300px;
        width: 100%;
        object-fit: cover;
    }
    
    .ceo-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem;
    }
    
    .ceo-image {
        width: 150px;
        height: 150px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

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