:root {
    --bg-dark: #05050f;
    --bg-light: #0d0f21;
    --text-primary: #ffffff;
    --text-secondary: #a0a5b8;
    --primary-color: #0ea5e9;
    --secondary-color: #8b5cf6;
    --accent-color: #14b8a6;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Typography & Utils */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(14, 165, 233, 0.1);
    transform: translateY(-2px);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background: rgba(5, 5, 15, 0.8);
    backdrop-filter: blur(12px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--card-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
}

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

.menu-toggle {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 2rem;
    background-image: url('../images/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.hero::before {
    content: '';
    position: absolute;
    top:0; left:0; right:0; bottom:0;
    background: linear-gradient(to bottom, rgba(5,5,15,0.7), var(--bg-dark));
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 2;
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(30px);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* Sections */
.section {
    padding: 8rem 2rem;
    position: relative;
}

.bg-light {
    background-color: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

/* Grids & Cards */
.grid {
    display: grid;
    gap: 2rem;
}

.services-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 3rem 2rem;
    backdrop-filter: blur(10px);
    transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.06), transparent 40%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-10px);
    border-color: rgba(255,255,255,0.2);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.card:hover::before {
    opacity: 1;
}

.card * {
    position: relative;
    z-index: 2;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-quote {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-secondary);
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin-bottom: 2rem;
}

.chairman-name {
    font-weight: 600;
    color: var(--primary-color);
}

.about-visual {
    position: relative;
    height: 400px;
    border-radius: 30px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(14, 165, 233,0.1), rgba(139, 92, 246,0.1));
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
}
.abstract-shape {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    filter: blur(50px);
    animation: float 6s ease-in-out infinite;
}

/* Footer */
.footer {
    background-color: #03030a;
    padding: 6rem 2rem 2rem;
    border-top: 1px solid var(--card-border);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-info p {
    color: var(--text-secondary);
    margin: 1.5rem 0;
}

.contact-email {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}
.contact-email:hover {
    text-decoration: underline;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.footer-col h4 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    color: var(--text-secondary);
}

.footer-col ul li a:hover {
    color: var(--text-primary);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    color: var(--text-secondary);
    padding-top: 2rem;
    border-top: 1px solid var(--card-border);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes float {
    0% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
    100% { transform: translateY(0px) scale(1); }
}

/* Responsive */
@media (max-width: 900px) {
    .about-container, .footer-container {
        grid-template-columns: 1fr;
    }
    .hero-title { font-size: 3rem; }
    .nav-links {
        position: fixed;
        top: 0; right: -100%;
        height: 100vh;
        width: 70%;
        background: rgba(5,5,15,0.95);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        transition: right 0.4s ease;
    }
    .nav-links.active { right: 0; }
    .menu-toggle { display: block; z-index: 1001; }
    .bar {
        display: block;
        width: 25px; height: 3px;
        margin: 5px auto;
        background-color: var(--text-primary);
        transition: all 0.3s ease;
    }
}