/* ==================== ROOT VARIABLES ==================== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --black: #000000;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #1f2937 0%, #111827 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.5);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-display: 'Playfair Display', serif;
}

/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition-base);
}

input,
textarea,
select {
    font-family: inherit;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: var(--transition-base);
    width: 100%;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ==================== UTILITY CLASSES ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.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); }

/* ==================== PARTICLES BACKGROUND ==================== */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ==================== NAVBAR ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-brand-icon {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse 2s ease-in-out infinite;
}

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

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    padding: 0.5rem 0;
}

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

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

.nav-link-btn {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: var(--transition-base);
}

.nav-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

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

.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-error {
    background: var(--error);
    color: var(--white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.glow-on-hover {
    position: relative;
    overflow: hidden;
}

.glow-on-hover:hover {
    box-shadow: var(--shadow-glow);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== HERO SECTION ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9) 0%, rgba(139, 92, 246, 0.8) 50%, rgba(236, 72, 153, 0.7) 100%);
}

.hero-container {
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--white);
}

.stat-content {
    text-align: left;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--white);
    animation: bounce 2s infinite;
}

.scroll-mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: var(--radius-full);
    margin: 0 auto var(--spacing-xs);
    position: relative;
}

.scroll-wheel {
    width: 6px;
    height: 10px;
    background: var(--white);
    border-radius: var(--radius-full);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

.scroll-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ==================== SECTIONS ==================== */
.section {
    padding: var(--spacing-xl) 0;
}

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

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== FEATURES SECTION ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.feature-icon {
    font-size: 2rem;
    color: var(--white);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.8;
}

/* ==================== NETWORKS SECTION ==================== */
.networks-section {
    background: var(--gradient-dark);
    color: var(--white);
}

.networks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.network-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition-base);
}

.network-card:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.15);
}

.network-logo {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 3rem;
}

.network-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.network-description {
    opacity: 0.9;
}

/* ==================== HOW IT WORKS ==================== */
.steps-container {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.step:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.step-description {
    color: var(--gray-600);
    line-height: 1.8;
}

/* ==================== CTA SECTION ==================== */
.cta-section {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl) 0;
}

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

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-text {
    opacity: 0.8;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-subtitle {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-links,
.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-links a {
    opacity: 0.8;
    transition: var(--transition-base);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-contact li {
    opacity: 0.8;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    opacity: 0.7;
}

/* ==================== LOADING OVERLAY ==================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    flex-direction: column;
    gap: var(--spacing-md);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

.loading-text {
    color: var(--white);
    font-size: 1.125rem;
}

/* ==================== NOTIFICATION TOAST ==================== */
.notification-toast {
    position: fixed;
    top: 100px;
    right: -400px;
    max-width: 350px;
    background: var(--white);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    z-index: 9998;
    transition: right var(--transition-base);
}

.notification-toast.show {
    right: var(--spacing-md);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: var(--transition-base);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-cta,
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .steps-container .step {
        flex-direction: column;
        text-align: center;
    }

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

/* ==================== ANIMATIONS ==================== */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

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

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 28px; }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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