/* ==================== */
/* CSS Variables & Reset */
/* ==================== */

:root {
    /* Colors */
    --primary: #00d9ff;
    --primary-dark: #00a8cc;
    --primary-light: #33e0ff;
    --secondary: #7c3aed;
    --accent: #ff006e;

    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: #13131a;
    --bg-card-hover: #1a1a24;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;

    --border: #1f1f2e;
    --border-light: #2a2a3e;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-dark: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Monaco', 'Courier New', monospace;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ==================== */
/* Container & Layout */
/* ==================== */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: var(--spacing-xl) 0;
}

/* ==================== */
/* Navigation */
/* ==================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    gap: 0.5rem;
}

.logo-text {
    color: var(--text-primary);
}

.logo-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-item-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    margin-top: 1rem;
}

.nav-item-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown li {
    border-bottom: 1px solid var(--border);
}

.dropdown li:last-child {
    border-bottom: none;
}

.dropdown a {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.dropdown a:hover {
    color: var(--primary);
    background: rgba(0, 217, 255, 0.05);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ==================== */
/* Hero Section */
/* ==================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    height: 500px;
}

.cyber-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    opacity: 0.3;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }
    100% {
        transform: perspective(500px) rotateX(60deg) translateY(50px);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--primary);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% {
        opacity: 0;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ==================== */
/* Buttons */
/* ==================== */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ==================== */
/* Section Headers */
/* ==================== */

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== */
/* Services Section */
/* ==================== */

.services {
    background: var(--bg-darker);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.2);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(0, 217, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.service-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.service-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    margin-bottom: 2rem;
}

.service-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.service-link {
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.service-link:hover {
    gap: 1rem;
}

/* ==================== */
/* Projects Section */
/* ==================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--secondary);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.2);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.project-icon {
    width: 60px;
    height: 60px;
    background: rgba(124, 58, 237, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
}

.project-title {
    font-size: 1.75rem;
    font-weight: 700;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.4rem 1rem;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--secondary);
}

.project-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.stat svg {
    color: var(--primary);
}

/* ==================== */
/* Contact Section */
/* ==================== */

.contact {
    background: var(--bg-darker);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    position: sticky;
    top: 100px;
}

.contact-description {
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.125rem;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 217, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-item a {
    color: var(--text-primary);
    font-size: 1.125rem;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary);
}

.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.form-group select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

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

/* ==================== */
/* Footer */
/* ==================== */

.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-column a {
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-muted);
}

/* ==================== */
/* Responsive Design */
/* ==================== */

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

    .services-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-info {
        position: static;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: 0.5rem;
    }

    .hero {
        min-height: 80vh;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }

    section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .service-card,
    .project-card,
    .contact-form-wrapper {
        padding: 1.5rem;
    }

    .services-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== */
/* Animations */
/* ==================== */

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* ==================== */
/* Utility Classes */
/* ==================== */

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

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }