@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

/* Default Light Theme Variables */
:root {
    --gold-primary: #B89422;
    --gold-light: #FFDF73;
    --gold-dark: #8C6A04;
    --orange-accent: #E07A1B;
    --bg-theme: #F9F8F6; /* ivory-100 */
    --slate-text: #0F172A;
    --slate-body: #334155;
    --card-bg: rgba(255, 255, 255, 0.85);
    --border-glass: rgba(184, 148, 34, 0.16);
    --shadow-glass: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
    --hover-shadow: 0 15px 45px -10px rgba(184, 148, 34, 0.12);
    --slider-track: rgba(0, 0, 0, 0.08);
    
    /* Gold Gradient Text */
    --gold-text-gradient: linear-gradient(135deg, #8C6A04 0%, #B89422 40%, #E07A1B 100%);
}

/* Dark Theme Overrides */
html.dark {
    --gold-primary: #D4AF37;
    --gold-light: #FFDF73;
    --gold-dark: #AA7C11;
    --orange-accent: #F2994A;
    --bg-theme: #0A0F1D; /* dark obsidian */
    --slate-text: #F1F5F9;
    --slate-body: #94A3B8;
    --card-bg: rgba(15, 23, 42, 0.65);
    --border-glass: rgba(212, 175, 55, 0.15);
    --shadow-glass: 0 10px 30px -10px rgba(0, 0, 0, 0.4);
    --hover-shadow: 0 15px 45px -10px rgba(212, 175, 55, 0.12);
    --slider-track: rgba(255, 255, 255, 0.1);
    
    /* Gold Gradient Text */
    --gold-text-gradient: linear-gradient(135deg, #FFF8DC 0%, #FFDF73 30%, #D4AF37 70%, #AA7C11 100%);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-theme);
    transition: background 0.3s ease;
}
::-webkit-scrollbar-thumb {
    background: var(--gold-primary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gold-dark);
}

html {
    scroll-behavior: smooth;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-theme);
    transition: background-color 0.3s ease;
}

body {
    overflow-x: hidden;
    color: var(--slate-body);
    background-color: var(--bg-theme);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Custom Typography Helper */
.font-title {
    font-family: 'Outfit', sans-serif;
}

/* Glassmorphism Styles (Theme Adaptive) */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel-hover:hover {
    border-color: rgba(184, 148, 34, 0.4);
}

html.dark .glass-panel-hover:hover {
    border-color: rgba(212, 175, 55, 0.4);
}

.glass-panel-hover:hover {
    box-shadow: var(--hover-shadow);
    transform: translateY(-4px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Gold Gradient Text & Background */
.text-gold-gradient {
    background: var(--gold-text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bg-gold-gradient {
    background: linear-gradient(135deg, #F2C94C 0%, #E07A1B 100%);
}

.border-gold-gradient {
    border-image: linear-gradient(135deg, #B89422, #E07A1B) 1;
}

html.dark .border-gold-gradient {
    border-image: linear-gradient(135deg, #D4AF37, #F2994A) 1;
}

/* 3D Motion & Cinematic Reveal Classes */
.reveal {
    opacity: 0;
    transform: perspective(1200px) rotateX(12deg) translateY(45px) scale(0.96);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    transform-style: preserve-3d;
    backface-visibility: hidden;
}

.reveal.reveal-left {
    transform: perspective(1200px) rotateY(-12deg) translateX(-45px) scale(0.96);
}

.reveal.reveal-right {
    transform: perspective(1200px) rotateY(12deg) translateX(45px) scale(0.96);
}

.reveal.active {
    opacity: 1;
    transform: perspective(1200px) rotateX(0deg) rotateY(0deg) translateY(0) translateX(0) scale(1);
}

/* Stagger Animation Delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* 3D Parallax Tilt Helpers */
.tilt-3d {
    transform-style: preserve-3d;
    will-change: transform;
}

.tilt-child-z1 {
    transform: translateZ(25px);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.tilt-child-z2 {
    transform: translateZ(50px);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.tilt-child-z3 {
    transform: translateZ(75px);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Custom Keyframe Animations */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(1deg); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-gold {
    0%, 100% { box-shadow: 0 0 0 0 rgba(184, 148, 34, 0.25); }
    50% { box-shadow: 0 0 15px 3px rgba(184, 148, 34, 0.15); }
}

html.dark .glow-gold {
    animation: pulse-gold-dark 3s infinite;
}

@keyframes pulse-gold-dark {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.25); }
    50% { box-shadow: 0 0 15px 3px rgba(212, 175, 55, 0.15); }
}

.glow-gold {
    animation: pulse-gold 3s infinite;
}

/* Hero Background Slide/Scale Animation */
@keyframes zoomBackground {
    0% { transform: scale(1); }
    100% { transform: scale(1.06); }
}

.hero-zoom {
    animation: zoomBackground 16s ease-out infinite alternate;
}

/* Custom Cost Estimator Styles */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: var(--slider-track);
    height: 6px;
    border-radius: 9999px;
    outline: none;
    transition: background 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #F2C94C, #E07A1B);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(224, 122, 27, 0.3);
    transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Testimonial Active Slide Styles */
.testimonial-slide {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.testimonial-slide.active {
    display: block;
    opacity: 1;
}

/* Page Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-theme);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease, background-color 0.3s ease;
}

#preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(184, 148, 34, 0.1);
    border-radius: 50%;
    border-top-color: var(--gold-primary);
    animation: spin 1s ease-in-out infinite;
}

html.dark .spinner {
    border: 3px solid rgba(212, 175, 55, 0.1);
    border-top-color: var(--gold-primary);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Toggle Switch Styles (For theme switch buttons) */
.theme-toggle-btn {
    position: relative;
    width: 44px;
    height: 24px;
    border-radius: 9999px;
    background-color: #E2E8F0;
    transition: background-color 0.3s ease;
    cursor: pointer;
}

html.dark .theme-toggle-btn {
    background-color: #334155;
}

.theme-toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #FFFFFF;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
}

html.dark .theme-toggle-thumb {
    transform: translateX(20px);
    background-color: #0A0F1D;
}