:root {
    --bg-dark: #0a0a0f;
    --bg-surface: rgba(255, 255, 255, 0.03);
    --bg-surface-hover: rgba(255, 255, 255, 0.08);
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    
    --accent-1: #8b5cf6;
    --accent-2: #3b82f6;
    --accent-3: #ec4899;
    
    --gradient-primary: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    --gradient-text: linear-gradient(to right, var(--accent-1), var(--accent-3));
    
    --border-color: rgba(255, 255, 255, 0.1);
    
    --font-main: 'Outfit', sans-serif;
    
    --nav-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 600;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.glass-panel {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, background 0.3s ease;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-family: var(--font-main);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--accent-1);
    color: white;
}

.btn-outline:hover {
    background: var(--accent-1);
}

.w-100 {
    width: 100%;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    z-index: 1000;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-1);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--text-primary);
}

.hero {
    min-height: 100vh;
    padding: 0;
    position: relative;
    overflow: hidden;
}

.hero-slider {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

/* Dark overlay on slides for text readability */
.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 15, 0.7);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    text-align: center;
    padding: 0 5%;
    margin-top: var(--nav-height);
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 100%;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.slider-controls {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 20px;
}

.slider-opt-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.slider-opt-btn:hover {
    background: var(--accent-1);
    border-color: var(--accent-1);
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: 10px;
}

.dot-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot-indicator.active {
    background: var(--accent-1);
    transform: scale(1.3);
}

section {
    padding: 6rem 0;
}

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

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

.features-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.features-list span {
    color: var(--accent-1);
    font-weight: bold;
}

.about-stats {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    text-align: center;
}

.stat-item h4 {
    font-size: 3rem;
}

.stat-item p {
    color: var(--text-secondary);
    font-weight: 500;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card.interactive {
    cursor: pointer;
}

.service-card.interactive:hover {
    transform: translateY(-10px);
    background: var(--bg-surface-hover);
    border-color: var(--accent-1);
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.15);
}

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

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

.service-card p {
    color: var(--text-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--accent-2);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.info-item {
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
}

.info-item strong {
    color: #fff;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-left: 10px;
}

.form-status {
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
    padding: 0.5rem;
    border-radius: 8px;
    display: none;
}

.status-success {
    display: block;
    background: rgba(39, 201, 63, 0.1);
    color: #27c93f;
    border: 1px solid rgba(39, 201, 63, 0.3);
}

.status-error {
    display: block;
    background: rgba(255, 95, 86, 0.1);
    color: #ff5f56;
    border: 1px solid rgba(255, 95, 86, 0.3);
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
}

footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.socials {
    display: flex;
    gap: 1rem;
}

.socials a {
    color: var(--text-secondary);
    text-decoration: none;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-surface);
    transition: all 0.3s ease;
}

.socials a:hover {
    color: #fff;
    background: var(--accent-1);
    transform: translateY(-2px);
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.05); }
    100% { transform: translate(0, 0) scale(1); }
}

@keyframes float-mockup {
    0% { transform: perspective(1000px) rotateY(-10deg) rotateX(10deg) translateY(0); }
    100% { transform: perspective(1000px) rotateY(-10deg) rotateX(10deg) translateY(-20px); }
}

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

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }

@media screen and (max-width: 992px) {
    .hero {
        padding-top: 0;
    }
    .hero-content {
        padding-top: calc(var(--nav-height) + 2rem);
    }
    .hero h1 { font-size: 3.5rem; }
    
    .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 768px) {
    .hamburger {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        left: -100%;
        top: var(--nav-height);
        flex-direction: column;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(10px);
        width: 100%;
        height: calc(100vh - var(--nav-height));
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding-top: 2rem;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 1.5rem 0;
    }
    
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    .hero h1 { font-size: 2.5rem; }
    .section-title h2 { font-size: 2.2rem; }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-surface: rgba(0, 0, 0, 0.03);
    --bg-surface-hover: rgba(0, 0, 0, 0.08);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    
    --border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(248, 250, 252, 0.9);
}

[data-theme="light"] .mockup {
    background: rgba(230, 235, 240, 0.7);
    border: 1px solid rgba(0,0,0,0.15);
}

[data-theme="light"] .line {
    background: rgba(0,0,0,0.1);
}

[data-theme="light"] .box {
    background: rgba(0,0,0,0.05);
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group textarea {
    background: rgba(255, 255, 255, 0.5);
    color: var(--text-primary);
}

[data-theme="light"] .nav-links {
    background: rgba(248, 250, 252, 0.95);
}

[data-theme="light"] .info-item strong {
    color: var(--text-primary);
}

.theme-toggle {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--text-primary);
    transition: transform 0.3s ease;
    margin: 0 auto;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.icon-sun { display: none; }
.icon-moon { display: block; }

[data-theme="light"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: none; }

[data-theme="light"] .features-list span {
    color: var(--accent-1);
}

[data-theme="light"] .btn-secondary {
    background: rgba(0, 0, 0, 0.05);
}

/* --- Language Selector --- */
.lang-select {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 500;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 0.7rem top 50%;
    background-size: 0.65rem auto;
    padding-right: 2rem;
}

.lang-select:hover {
    border-color: var(--accent-1);
}

.lang-select:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

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

[data-theme="light"] .lang-select {
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%231e293b%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    border-color: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .lang-select option {
    background: #ffffff;
    color: #1e293b;
}