:root {
    --bg-color: #050505;
    --text-color: #f0f0f0;
    --accent-color: #00E5FF; /* Electric Cyan */
    --accent-glow: rgba(0, 229, 255, 0.3);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg-color);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease;
}
.loader-text {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
    color: var(--accent-color);
}
.loader-bar {
    width: 200px;
    height: 2px;
    background: rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
}
.loader-progress {
    position: absolute;
    top: 0; left: 0; height: 100%; width: 0%;
    background: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
    animation: load 2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
@keyframes load { to { width: 100%; } }

/* Three.js Background */
#canvas-container {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1;
    pointer-events: none;
}

/* Typography & Layout */
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; }
.container { max-width: 1200px; margin: 0 auto; padding: 100px 20px; }
.section-title { font-size: 2.5rem; margin-bottom: 40px; color: #fff; }
.text-center { text-align: center; }
.subtitle { color: #aaa; margin-top: -30px; margin-bottom: 40px; }

/* Nav */
nav {
    position: fixed;
    top: 0; width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}
.logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; color: var(--accent-color); }
.nav-links a {
    color: #fff; text-decoration: none; margin-left: 30px;
    font-size: 0.9rem; transition: color 0.3s;
}
.nav-links a:hover { color: var(--accent-color); }

/* Buttons */
.btn-primary, .btn-outline {
    display: inline-block; padding: 12px 28px;
    border-radius: 4px; text-decoration: none; font-weight: 600;
    transition: all 0.3s ease; cursor: pointer; border: none; font-family: var(--font-main);
}
.btn-primary { background: var(--accent-color); color: #000; }
.btn-outline { border: 1px solid var(--accent-color); color: var(--accent-color); padding: 8px 20px;}
.w-100 { width: 100%; margin-top: 20px; }

/* 3D Button Effect */
.3d-btn {
    transform: perspective(500px) translateZ(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.3d-btn:hover {
    transform: perspective(500px) translateZ(20px) scale(1.05);
    box-shadow: 0 10px 20px var(--accent-glow);
}

/* Glassmorphism & 3D Cards */
.glassmorphism {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 40px;
}
.tilt-card {
    transform-style: preserve-3d;
    transform: perspective(1000px);
    transition: transform 0.1s; /* smooth catchup for JS */
}

/* Hero */
#hero { height: 100vh; display: flex; align-items: center; padding: 0 10%; }
.hero-content { max-width: 800px; }
.hero-content h1 { font-size: 5rem; margin-bottom: 10px; line-height: 1; }
.hero-content h2 { font-size: 2rem; color: var(--accent-color); margin-bottom: 20px; }
.hero-content p { font-size: 1.1rem; color: #aaa; margin-bottom: 40px; max-width: 600px; }

/* About */
.about-card { display: flex; gap: 40px; align-items: center; transform: translateZ(30px); }
.about-content { flex: 2; }
.about-stats { flex: 1; display: flex; flex-direction: column; gap: 20px; border-left: 1px solid var(--glass-border); padding-left: 30px; transform: translateZ(50px); }
.stat h3 { font-size: 3rem; color: var(--accent-color); }

/* Services */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.service-card { padding: 40px 30px; text-align: center; }
.card-inner { transform: translateZ(40px); }
.icon-3d { font-size: 3rem; color: var(--accent-color); margin-bottom: 20px; text-shadow: 0 0 20px var(--accent-glow); }

/* Spend Proof / Results */
.masonry-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(450px, 1fr)); gap: 40px; }
.result-card { background: var(--glass-bg); border-radius: 12px; overflow: hidden; border: 1px solid var(--glass-border); }
.result-img-wrapper { overflow: hidden; transform-style: preserve-3d; }
.result-img { width: 100%; height: auto; display: block; transition: transform 0.5s; transform: translateZ(20px) scale(1.02); }
.result-card:hover .result-img { transform: translateZ(40px) scale(1.08); }
.result-caption { padding: 25px; transform: translateZ(30px); }
.result-caption h4 { font-size: 1.5rem; color: var(--accent-color); margin-bottom: 10px; }

/* Case Studies (Flip / Reveal Cards) */
.case-studies-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.case-card {
    position: relative; padding: 40px; min-height: 250px; cursor: pointer;
    overflow: hidden; display: flex; flex-direction: column; justify-content: center;
}
.case-card h3 { font-size: 1.4rem; margin-bottom: 10px; }
.tag { font-size: 0.8rem; background: rgba(0, 229, 255, 0.1); color: var(--accent-color); padding: 4px 10px; border-radius: 20px; border: 1px solid var(--accent-glow); }
.case-back {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--accent-color); color: #000;
    padding: 30px; display: flex; flex-direction: column; justify-content: center;
    opacity: 0; transform: translateY(100%); transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}
.case-card:hover .case-back { opacity: 1; transform: translateY(0); }

/* Contact Form */
.contact-wrapper { max-width: 600px; margin: 0 auto; text-align: center; }
.contact-form { margin-top: 40px; text-align: left; }
.input-group { position: relative; margin-bottom: 30px; }
.input-group input, .input-group textarea {
    width: 100%; padding: 15px 0; background: transparent; border: none;
    border-bottom: 1px solid #555; color: #fff; font-size: 1rem;
    font-family: var(--font-main); outline: none; transition: 0.3s;
}
.input-group label {
    position: absolute; top: 15px; left: 0; color: #aaa; pointer-events: none;
    transition: 0.3s ease all; font-size: 1rem;
}
.input-group input:focus ~ label, .input-group input:not(:placeholder-shown) ~ label,
.input-group textarea:focus ~ label, .input-group textarea:not(:placeholder-shown) ~ label {
    top: -20px; font-size: 0.8rem; color: var(--accent-color);
}
.input-highlight {
    position: absolute; bottom: 0; left: 0; height: 2px; width: 0;
    background: var(--accent-color); transition: 0.3s ease all;
}
.input-group input:focus ~ .input-highlight, .input-group textarea:focus ~ .input-highlight { width: 100%; }

.social-links { margin-top: 40px; display: flex; justify-content: center; gap: 20px; }
.social-icon {
    display: inline-flex; width: 50px; height: 50px; border-radius: 50%;
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    align-items: center; justify-content: center; color: #fff;
    font-size: 1.2rem; transition: 0.3s; transform: perspective(500px) translateZ(0);
}
.social-icon:hover {
    background: var(--accent-color); color: #000;
    transform: perspective(500px) translateZ(20px) rotateY(15deg);
}

/* Responsiveness */
@media (max-width: 768px) {
    .hero-content h1 { font-size: 3rem; }
    .hero-content h2 { font-size: 1.5rem; }
    .about-card { flex-direction: column; text-align: center; }
    .about-stats { border-left: none; border-top: 1px solid var(--glass-border); padding-left: 0; padding-top: 20px; flex-direction: row; justify-content: center; }
    .nav-links { display: none; /* Simple hidden nav for mobile to keep clean, implement hamburger if needed */ }
    .masonry-grid { grid-template-columns: 1fr; }
    
    /* Disable heavy 3D tilts on mobile for performance/UX */
    .tilt-card { transform: none !important; transition: none !important; }
}