/* ============================================
   CAELQOR - Premium Dark Landing Page
   Production-Ready Styles
   ============================================ */

/* ============================================
   1. CSS VARIABLES & RESET
   ============================================ */
:root {
    /* Color System */
    --bg-primary: #0F0F12;
    --bg-secondary: #15161C;
    --gold-accent: #C6A75E;
    --gold-accent-hover: #D4B870;
    --text-primary: #EAEAEA;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-spacing-desktop: 120px;
    --section-spacing-tablet: 90px;
    --section-spacing-mobile: 70px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================
   3. PRELOADER
   ============================================ */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
    position: relative;
}

.preloader-line {
    width: 0;
    height: 2px;
    background-color: var(--gold-accent);
    margin: 0 auto 20px;
    animation: preloaderLine 1.2s ease-out forwards;
}

@keyframes preloaderLine {
    0% {
        width: 0;
    }
    100% {
        width: 100px;
    }
}

.preloader-text {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: 8px;
    color: var(--text-primary);
    opacity: 0;
    animation: fadeIn 1s ease-out 0.3s forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* ============================================
   4. NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: background-color var(--transition-medium),
                backdrop-filter var(--transition-medium),
                padding var(--transition-medium);
}

.navbar.scrolled {
    background-color: rgba(15, 15, 18, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 16px 0;
    border-bottom: 1px solid rgba(198, 167, 94, 0.1);
}

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

.logo {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--text-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* ============================================
   5. BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border: 1px solid var(--gold-accent);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--gold-accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: var(--gold-accent-hover);
    border-color: var(--gold-accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--gold-accent);
}

.btn-secondary:hover {
    background-color: rgba(198, 167, 94, 0.1);
    transform: translateY(-2px);
}

.btn-nav {
    padding: 10px 20px;
    font-size: 13px;
}

.btn-full {
    width: 100%;
}

.btn-whatsapp {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--gold-accent);
    border-radius: 50%;
    color: var(--gold-accent);
    transition: all var(--transition-fast);
}

.btn-whatsapp:hover {
    background-color: rgba(198, 167, 94, 0.1);
    transform: scale(1.1);
}

/* ============================================
   6. HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: 56px;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

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

/* Hero Visual - Grid Animation */
.hero-visual {
    position: relative;
    height: 400px;
}

.grid-animation {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 1px;
}

.grid-line {
    background-color: rgba(198, 167, 94, 0.1);
    animation: gridPulse 4s ease-in-out infinite;
}

.grid-line:nth-child(1) { animation-delay: 0s; }
.grid-line:nth-child(2) { animation-delay: 0.5s; }
.grid-line:nth-child(3) { animation-delay: 1s; }
.grid-line:nth-child(4) { animation-delay: 1.5s; }
.grid-line:nth-child(5) { animation-delay: 2s; }
.grid-line:nth-child(6) { animation-delay: 2.5s; }
.grid-line:nth-child(7) { animation-delay: 3s; }
.grid-line:nth-child(8) { animation-delay: 3.5s; }

@keyframes gridPulse {
    0%, 100% {
        opacity: 0.1;
    }
    50% {
        opacity: 0.3;
    }
}

/* ============================================
   7. AUTHORITY STRIP
   ============================================ */
.authority-strip {
    padding: var(--section-spacing-desktop) 0;
    border-top: 1px solid rgba(198, 167, 94, 0.1);
    border-bottom: 1px solid rgba(198, 167, 94, 0.1);
}

.authority-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.authority-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.authority-number {
    font-size: 36px;
    font-weight: 600;
    color: var(--gold-accent);
    letter-spacing: -1px;
}

.authority-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   8. SERVICES SECTION
   ============================================ */
.services {
    padding: var(--section-spacing-desktop) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 40px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background-color: rgba(21, 22, 28, 0.5);
    border: 1px solid rgba(198, 167, 94, 0.1);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all var(--transition-medium);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.service-card:hover {
    border-color: var(--gold-accent);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
    margin-bottom: 24px;
}

.service-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
}

.service-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   9. ROI METRICS SECTION
   ============================================ */
.roi-metrics {
    padding: var(--section-spacing-desktop) 0;
    background-color: var(--bg-secondary);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    text-align: center;
}

.metric-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.metric-number {
    font-size: 64px;
    font-weight: 600;
    color: var(--gold-accent);
    letter-spacing: -2px;
    line-height: 1;
}

.metric-label {
    font-size: 16px;
    color: var(--text-secondary);
}

/* ============================================
   10. FOUNDER SECTION
   ============================================ */
.founder {
    padding: var(--section-spacing-desktop) 0;
}

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

.founder-title {
    font-size: 40px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.founder-text {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.founder-portrait {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    aspect-ratio: 3/4;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(198, 167, 94, 0.1);
}

.portrait-placeholder {
    color: var(--gold-accent);
}

/* ============================================
   11. CONTACT SECTION
   ============================================ */
.contact {
    padding: var(--section-spacing-desktop) 0;
}

.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    background-color: var(--bg-secondary);
    border: 1px solid rgba(198, 167, 94, 0.1);
    border-radius: var(--radius-lg);
    padding: 40px;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--bg-primary);
    border: 1px solid rgba(198, 167, 94, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 15px;
    transition: all var(--transition-fast);
}

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

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    display: none;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding: 16px;
    background-color: rgba(198, 167, 94, 0.1);
    border: 1px solid var(--gold-accent);
    border-radius: var(--radius-sm);
    color: var(--gold-accent);
    font-size: 14px;
}

.contact-whatsapp {
    text-align: center;
    margin-top: 24px;
}

.contact-whatsapp p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

/* ============================================
   12. FINAL CTA SECTION
   ============================================ */
.final-cta {
    padding: var(--section-spacing-desktop) 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid rgba(198, 167, 94, 0.1);
}

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

.cta-title {
    font-size: 48px;
    font-weight: 600;
    margin-bottom: 32px;
    letter-spacing: -1px;
}

/* ============================================
   13. FOOTER
   ============================================ */
.footer {
    padding: 32px 0;
    background-color: var(--bg-primary);
    border-top: 1px solid rgba(198, 167, 94, 0.1);
}

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

.footer-logo {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.social-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--gold-accent);
    transform: scale(1.1);
}

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

/* ============================================
   14. FLOATING WHATSAPP BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background-color: var(--bg-primary);
    border: 2px solid var(--gold-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(198, 167, 94, 0.3);
}

/* ============================================
   15. ANIMATIONS
   ============================================ */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow),
                transform var(--transition-slow);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays for sequential animations */
.hero-buttons .fade-up:nth-child(1) { transition-delay: 0.2s; }
.hero-buttons .fade-up:nth-child(2) { transition-delay: 0.3s; }

.authority-item .fade-up:nth-child(1) { transition-delay: 0s; }
.authority-item .fade-up:nth-child(2) { transition-delay: 0.1s; }
.authority-item .fade-up:nth-child(3) { transition-delay: 0.2s; }
.authority-item .fade-up:nth-child(4) { transition-delay: 0.3s; }

.service-card .fade-up:nth-child(1) { transition-delay: 0s; }
.service-card .fade-up:nth-child(2) { transition-delay: 0.15s; }
.service-card .fade-up:nth-child(3) { transition-delay: 0.3s; }

.metric-item .fade-up:nth-child(1) { transition-delay: 0s; }
.metric-item .fade-up:nth-child(2) { transition-delay: 0.15s; }
.metric-item .fade-up:nth-child(3) { transition-delay: 0.3s; }

/* ============================================
   16. RESPONSIVE DESIGN - TABLET
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .cta-title {
        font-size: 42px;
    }
    
    .services,
    .roi-metrics,
    .founder,
    .contact,
    .final-cta,
    .authority-strip {
        padding: var(--section-spacing-tablet) 0;
    }
}

/* ============================================
   17. RESPONSIVE DESIGN - MOBILE
   ============================================ */
@media (max-width: 768px) {
    /* Container */
    .container {
        padding: 0 20px;
    }
    
    /* Navbar */
    .nav-actions {
        gap: 12px;
    }
    
    .btn-nav {
        display: none;
    }
    
    /* Hero */
    .hero {
        padding-top: 100px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-visual {
        display: none;
    }
    
    /* Authority Strip */
    .authority-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    
    .authority-number {
        font-size: 28px;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .service-card {
        padding: 32px 24px;
    }
    
    /* ROI Metrics */
    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .metric-number {
        font-size: 48px;
    }
    
    /* Founder */
    .founder-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .founder-title {
        font-size: 32px;
    }
    
    .founder-text {
        font-size: 16px;
    }
    
    .founder-portrait {
        max-width: 300px;
    }
    
    /* Contact */
    .contact-form {
        padding: 32px 24px;
    }
    
    /* Final CTA */
    .cta-title {
        font-size: 32px;
    }
    
    /* Section Spacing */
    .services,
    .roi-metrics,
    .founder,
    .contact,
    .final-cta,
    .authority-strip {
        padding: var(--section-spacing-mobile) 0;
    }
    
    /* Floating WhatsApp */
    .whatsapp-float {
        bottom: 16px;
        right: 16px;
        width: 48px;
        height: 48px;
    }
    
    /* Social Links */
    .social-links {
        gap: 12px;
    }
    
    .social-link {
        width: 36px;
        height: 36px;
    }
    
    .social-link svg {
        width: 20px;
        height: 20px;
    }
}

/* ============================================
   18. UTILITY CLASSES
   ============================================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}