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

:root {
    /* Colors - Premium Dark Tech Theme */
    --bg-color: #0a0a0f;
    --surface-color: #13131f;
    --surface-color-hover: #1c1c2e;
    --primary-color: #3b82f6;
    /* Electric Blue */
    --primary-hover: #2563eb;
    --accent-color: #8b5cf6;
    /* Violet */
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --border-color: #2d2d42;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-surface: linear-gradient(180deg, rgba(19, 19, 31, 0.8) 0%, rgba(19, 19, 31, 0.4) 100%);

    /* Spacing */
    --container-width: 1200px;
    --header-height: 80px;

    /* Effects */
    --glass-bg: rgba(19, 19, 31, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --backdrop-blur: blur(12px);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body.menu-open {
    overflow: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

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

.btn-outline:hover {
    background: rgba(59, 130, 246, 0.1);
    color: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    border-bottom: var(--glass-border);
    display: flex;
    align-items: center;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: white;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--surface-color);
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    border: var(--glass-border);
    border-radius: 8px;
    z-index: 1;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 0;
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: fadeIn 0.3s ease;
}

.dropdown-content a {
    color: var(--text-secondary);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    white-space: nowrap;
}

.dropdown-content a:hover {
    background-color: var(--surface-color-hover);
    color: white;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, 10px);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

.nav-links>a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links>a:hover::after,
.nav-links>a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: white;
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 80px);
    padding-bottom: 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero h1 span {
    color: var(--primary-color);
}

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

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

/* Features/Services Grid */
.services {
    padding: 15px 0 100px;
}

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

.card {
    background: var(--surface-color);
    border: var(--glass-border);
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    background: var(--surface-color-hover);
    border-color: rgba(59, 130, 246, 0.3);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

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

/* Video Section */
.video-section {
    padding: 80px 0;
    background: var(--surface-color);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.video-wrapper {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: var(--glass-border);
    background: #000;
}

.video-wrapper video {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--surface-color) 0%, var(--bg-color) 100%);
}

.video-wrapper video::-webkit-media-controls-panel {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
}

.video-title {
    padding: 1rem 1rem 0.5rem;
    text-align: center;
    color: var(--text-primary);
    background: var(--surface-color);
    font-size: 1rem;
    margin: 0;
}

.btn-download {
    display: block;
    padding: 12px 20px;
    margin: 0 1rem 1rem;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.4);
}

.btn-download i {
    margin-right: 8px;
}

@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
}

/* Footer */
footer {
    background: var(--surface-color);
    padding: 60px 0 20px;
    border-top: var(--glass-border);
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
}

.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(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Mobile Responsive - Tablet */
@media (max-width: 1024px) {
    :root {
        --header-height: 70px;
    }

    .hero h1 {
        font-size: 3.2rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .card {
        padding: 1.5rem;
    }
}

/* Mobile Responsive - Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .container {
        padding: 0 15px;
    }

    /* Header & Navigation */
    .mobile-menu-btn {
        display: block;
        padding: 8px;
        z-index: 1001;
    }

    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--surface-color);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: var(--glass-border);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
        z-index: 999;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1.1rem;
        padding: 10px 0;
        width: 100%;
        text-align: left;
    }

    .dropdown {
        width: 100%;
    }

    .dropdown-content {
        position: static;
        background: rgba(255, 255, 255, 0.05);
        box-shadow: none;
        border: none;
        border-radius: 8px;
        padding: 10px 0;
        margin-top: 10px;
        transform: none;
        display: none;
    }

    .dropdown.active .dropdown-content,
    .dropdown:hover .dropdown-content {
        display: block;
        animation: none;
    }

    .dropdown-content a {
        padding: 10px 20px;
    }

    /* Hero Section */
    .hero {
        padding-top: calc(var(--header-height) + 40px);
        padding-bottom: 40px;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }

    .hero p {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.8rem;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    /* Section Titles */
    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    /* Services Grid */
    .services {
        padding: 40px 0 60px;
    }

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

    .card {
        padding: 1.5rem;
        border-radius: 16px;
    }

    .card:hover {
        transform: none;
    }

    .card-icon {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .card h3 {
        font-size: 1.25rem;
    }

    .card p {
        font-size: 0.95rem;
    }

    /* Video Section */
    .video-section {
        padding: 40px 0;
    }

    .video-grid {
        gap: 1.5rem;
    }

    .video-wrapper {
        border-radius: 12px;
    }

    .video-title {
        font-size: 0.9rem;
        padding: 0.8rem 0.8rem 0.4rem;
    }

    .btn-download {
        padding: 10px 16px;
        margin: 0 0.8rem 0.8rem;
        font-size: 0.9rem;
        border-radius: 8px;
    }

    /* CTA Section */
    section[style*="padding: 80px"] {
        padding: 40px 15px !important;
    }

    section[style*="padding: 80px"] > div {
        padding: 30px 20px !important;
        border-radius: 16px !important;
    }

    section[style*="padding: 80px"] h2 {
        font-size: 1.5rem !important;
    }

    section[style*="padding: 80px"] p {
        font-size: 0.95rem !important;
    }

    /* Footer */
    footer {
        padding: 40px 0 20px;
        margin-top: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-col h4 {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }

    .footer-col ul li {
        margin-bottom: 0.6rem;
    }

    .footer-bottom {
        font-size: 0.8rem;
    }

    /* Buttons */
    .btn {
        padding: 10px 24px;
        font-size: 0.95rem;
    }
}

/* Mobile Responsive - Small Mobile */
@media (max-width: 480px) {
    :root {
        --header-height: 56px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
    }

    .card {
        padding: 1.2rem;
    }

    .card h3 {
        font-size: 1.1rem;
    }

    .card p {
        font-size: 0.9rem;
    }

    .footer-grid {
        gap: 1.5rem;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .card:hover {
        transform: none;
        background: var(--surface-color);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .card:active {
        transform: scale(0.98);
        background: var(--surface-color-hover);
    }

    .btn:hover {
        transform: none;
    }

    .btn:active {
        transform: scale(0.98);
    }

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

/* Landscape mode on mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + 20px);
        padding-bottom: 20px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .nav-links {
        height: calc(100vh - var(--header-height));
        padding: 1rem 2rem;
        gap: 0.8rem;
    }

    .nav-links a {
        padding: 6px 0;
        font-size: 1rem;
    }
}