/* ========================================
   AURA ESTATES - Dark Luxury Design System
   ======================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg: #050505;
    --color-bg-elevated: #0a0a0a;
    --color-bg-card: rgba(255, 255, 255, 0.03);
    
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.6);
    --color-text-muted: rgba(255, 255, 255, 0.4);
    
    --color-gold: #C9A66B;
    --color-gold-light: #D4B87C;
    --color-bronze: #8B7355;
    
    --color-accent-glow: rgba(201, 166, 107, 0.15);
    --color-glass-bg: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.08);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-thin: 200;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    --space-2xl: 12rem;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Glassmorphism */
    --glass-blur: blur(20px);
    --glass-blur-strong: blur(40px);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-lg);
    transition: var(--transition-smooth);
}

.nav.scrolled {
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: baseline;
    gap: 0.3rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-light);
    letter-spacing: 0.3em;
    color: var(--color-text-primary);
}

.logo-accent {
    font-size: 0.75rem;
    font-weight: var(--font-weight-thin);
    letter-spacing: 0.4em;
    color: var(--color-gold);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-gold);
    transition: var(--transition-smooth);
}

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

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

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1.1);
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1.15); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(5, 5, 5, 0.4) 0%,
        rgba(5, 5, 5, 0.6) 50%,
        rgba(5, 5, 5, 0.95) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: var(--space-md);
}

.hero-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    border: 1px solid var(--color-glass-border);
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gold);
    background: var(--color-glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: var(--font-weight-thin);
    line-height: 1.1;
    margin-bottom: var(--space-md);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--color-gold);
    font-weight: var(--font-weight-light);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-light);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 1s ease-out 0.4s both;
}

/* AI Input Field */
.ai-input-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.ai-input-glow {
    position: absolute;
    inset: -2px;
    background: linear-gradient(
        135deg,
        var(--color-gold) 0%,
        transparent 50%,
        var(--color-bronze) 100%
    );
    border-radius: 100px;
    opacity: 0.3;
    filter: blur(20px);
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.02); }
}

.ai-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: 100px;
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    transition: var(--transition-smooth);
}

.ai-input-wrapper:hover,
.ai-input-wrapper:focus-within {
    border-color: rgba(201, 166, 107, 0.3);
    background: rgba(255, 255, 255, 0.08);
}

.ai-icon {
    width: 24px;
    height: 24px;
    color: var(--color-gold);
    flex-shrink: 0;
}

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

.ai-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: var(--font-weight-light);
    color: var(--color-text-primary);
    cursor: text;
}

.ai-input::placeholder {
    color: var(--color-text-muted);
}

.ai-submit {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--color-gold);
    color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.ai-submit:hover {
    transform: scale(1.1);
    background: var(--color-gold-light);
}

.ai-submit svg {
    width: 18px;
    height: 18px;
}

.ai-hint {
    display: block;
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    animation: fadeInUp 1s ease-out 1s both;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(
        180deg,
        var(--color-gold) 0%,
        transparent 100%
    );
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ========================================
   PORTFOLIO SECTION
   ======================================== */
.portfolio {
    padding: var(--space-2xl) var(--space-lg);
    background: var(--color-bg);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-thin);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-light);
}

/* Property Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    max-width: 1600px;
    margin: 0 auto;
}

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

.property-card:hover {
    transform: translateY(-8px);
    border-color: rgba(201, 166, 107, 0.2);
}

.property-card:hover .property-image {
    transform: scale(1.1);
}

.property-card:hover .property-overlay {
    opacity: 0.3;
}

.property-image-container {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
}

.property-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.property-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(5, 5, 5, 0.8) 100%
    );
    opacity: 0.6;
    transition: var(--transition-smooth);
}

.property-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(5, 5, 5, 0.95) 100%
    );
}

.property-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: 100px;
    font-size: 0.65rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: var(--space-xs);
    backdrop-filter: var(--glass-blur);
}

.property-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-light);
    margin-bottom: 4px;
}

.property-location {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.property-details {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.separator {
    color: var(--color-gold);
}

/* ========================================
   TECHNOLOGY SECTION
   ======================================== */
.technology {
    position: relative;
    padding: var(--space-2xl) var(--space-lg);
    background: var(--color-bg-elevated);
    overflow: hidden;
}

.tech-background {
    position: absolute;
    inset: 0;
    opacity: 0.5;
}

.grid-lines {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(201, 166, 107, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201, 166, 107, 0.03) 1px, transparent 1px);
    background-size: 100px 100px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.data-particles {
    position: absolute;
    inset: 0;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--color-gold);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 10s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-20px) translateX(10px); }
    50% { transform: translateY(-10px) translateX(-10px); }
    75% { transform: translateY(-30px) translateX(5px); }
}

.tech-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.tech-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.tech-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-thin);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.tech-title .accent {
    color: var(--color-gold);
}

.tech-subtitle {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-light);
}

/* Tech Features */
.tech-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.tech-feature {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: 24px;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: var(--transition-smooth);
}

.tech-feature:hover {
    transform: translateY(-4px);
    border-color: rgba(201, 166, 107, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    color: var(--color-gold);
}

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

.feature-title {
    font-size: 1.1rem;
    font-weight: var(--font-weight-regular);
    margin-bottom: var(--space-xs);
}

.feature-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-light);
}

/* Tech Stats */
.tech-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-glass-border);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: var(--font-weight-thin);
    color: var(--color-gold);
    line-height: 1;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: var(--font-weight-thin);
    color: var(--color-gold);
}

.stat-label {
    display: block;
    margin-top: var(--space-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
    padding: var(--space-xl) var(--space-lg);
    background: var(--color-bg);
    text-align: center;
}

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

.contact-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-thin);
    margin-bottom: var(--space-sm);
}

.contact-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.contact-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: 1px solid var(--color-gold);
    border-radius: 100px;
    color: var(--color-gold);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.1em;
    transition: var(--transition-smooth);
}

.contact-button:hover {
    background: var(--color-gold);
    color: var(--color-bg);
}

.contact-button svg {
    width: 16px;
    height: 16px;
    transition: var(--transition-fast);
}

.contact-button:hover svg {
    transform: translateX(4px);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: var(--space-lg) var(--space-lg) var(--space-md);
    background: var(--color-bg);
    border-top: 1px solid var(--color-glass-border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-glass-border);
}

.footer-brand {
    display: flex;
    align-items: baseline;
    gap: 0.3rem;
}

.footer-tagline {
    margin-top: var(--space-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

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

.footer-credit {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-credit p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.05em;
}

.footer-credit strong {
    color: var(--color-gold);
    font-weight: var(--font-weight-medium);
}

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

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-features .tech-feature:last-child {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 2rem;
        --space-xl: 4rem;
        --space-2xl: 6rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .tech-features {
        grid-template-columns: 1fr;
    }
    
    .tech-features .tech-feature:last-child {
        grid-column: span 1;
        max-width: none;
    }
    
    .tech-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .footer-main {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .ai-input-wrapper {
        flex-wrap: wrap;
        border-radius: 24px;
        padding: var(--space-sm);
    }
    
    .ai-input {
        order: 2;
        width: 100%;
        text-align: center;
        margin-top: var(--space-xs);
    }
    
    .ai-submit {
        order: 3;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}