/* ========================================
   CSS Variables - Email Theme Colors
   ======================================== */
:root {
    /* Primary Purple-Blue Colors */
    --primary: #8b5cf6;
    --primary-light: #a78bfa;
    --primary-dark: #7c3aed;
    --secondary: #6366f1;
    --accent: #ec4899;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    /* Dark Theme */
    --dark: #0a0e1a;
    --dark-light: #1a1f35;
    --dark-card: rgba(26, 31, 53, 0.6);
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Shadows */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 35px 70px -15px rgba(0, 0, 0, 0.4);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
    --gradient-secondary: linear-gradient(135deg, #6366f1 0%, #818cf8 100%);
    --gradient-accent: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
    --gradient-hero: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
}

/* ========================================
   Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ========================================
   Email-Themed Background
   ======================================== */
.email-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.envelope-float {
    position: absolute;
    width: 80px;
    height: 60px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(99, 102, 241, 0.15));
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 8px;
    animation: floatEnvelope 20s ease-in-out infinite;
    opacity: 0.6;
}

.envelope-float::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-right: 40px solid transparent;
    border-top: 30px solid rgba(139, 92, 246, 0.4);
}

.envelope-float:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.envelope-float:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 5s;
}

.envelope-float:nth-child(3) {
    top: 40%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes floatEnvelope {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(50px, -50px) rotate(5deg);
    }
    50% {
        transform: translate(-30px, 30px) rotate(-5deg);
    }
    75% {
        transform: translate(30px, 50px) rotate(3deg);
    }
}

.at-symbol {
    position: absolute;
    font-size: 100px;
    color: rgba(139, 92, 246, 0.08);
    font-weight: 900;
    animation: rotateAt 30s linear infinite;
}

.at-symbol::before {
    content: '@';
}

.at-symbol:nth-child(4) {
    top: 20%;
    right: 15%;
}

.at-symbol:nth-child(5) {
    bottom: 25%;
    left: 20%;
    font-size: 150px;
}

@keyframes rotateAt {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Header Styles
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header.scrolled {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 2rem;
    font-weight: 900;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}

.logo i {
    color: var(--primary);
    font-size: 2.5rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

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

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
    background: var(--glass);
}

.cta-button {
    background: var(--gradient-primary) !important;
    color: white !important;
    padding: 0.75rem 1.75rem !important;
    border-radius: 50px !important;
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: var(--glass);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu.active {
    display: flex;
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    background: var(--glass);
    border: 1px solid var(--glass-border);
}

.mobile-menu a:hover {
    background: var(--gradient-primary);
}

.close-menu {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 1rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-menu:hover {
    background: var(--gradient-primary);
    transform: rotate(90deg);
}

/* ========================================
   Main Content
   ======================================== */
main {
    padding-top: 100px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
   Hero Section - Email Themed
   ======================================== */
.hero {
    text-align: center;
    padding: 6rem 0 4rem;
    position: relative;
}

.hero-icon {
    font-size: 5rem;
    color: var(--primary);
    margin-bottom: 2rem;
    animation: bounceEmail 2s ease-in-out infinite;
}

@keyframes bounceEmail {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero p {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    border: none;
}

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

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

.btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary:hover {
    background: var(--gradient-secondary);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat i {
    font-size: 2.5rem;
    color: var(--primary);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: 6rem 0;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--dark-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2.5rem;
    border: 1px solid var(--glass-border);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

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

.feature-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
    padding: 6rem 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--dark-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: all 0.4s ease;
    position: relative;
    cursor: pointer;
}

.pricing-card.featured {
    transform: scale(1.05);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured::before {
    content: 'ПОПУЛЯРНЫЙ';
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--gradient-accent);
    color: white;
    padding: 0.4rem 3rem;
    font-size: 0.7rem;
    font-weight: 800;
    transform: rotate(45deg);
    letter-spacing: 0.5px;
}

.pricing-card.lifetime {
    border: 2px solid var(--success);
}

.pricing-card.lifetime::before {
    content: 'НАВСЕГДА';
    background: var(--gradient-primary);
}

.pricing-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured:hover {
    transform: translateY(-10px) scale(1.08);
}

.plan-name {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.plan-price {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.pricing-card.featured .plan-price {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-card.lifetime .plan-price {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.plan-period {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.plan-features li {
    padding: 0.6rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.plan-features .check {
    color: var(--success);
    font-weight: 800;
    font-size: 1.1rem;
}

.plan-features .cross {
    color: var(--danger);
    font-weight: 800;
}

.plan-button {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.plan-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured .plan-button {
    background: var(--gradient-accent);
}

.pricing-card.lifetime .plan-button {
    background: var(--gradient-secondary);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: 6rem 0;
    text-align: center;
}

.contact-card {
    background: var(--dark-card);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 4rem 3rem;
    max-width: 700px;
    margin: 0 auto;
    border: 1px solid var(--glass-border);
}

.contact-icon {
    font-size: 4rem;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
}

.contact h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.telegram-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    color: white;
    padding: 1.25rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.telegram-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.5);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark-light);
    padding: 3rem 0 1.5rem;
    margin-top: 6rem;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.8;
    transition: color 0.3s ease;
}

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

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

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 3000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

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

.modal-content {
    background: var(--dark-card);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 3rem;
    max-width: 500px;
    width: 100%;
    border: 1px solid var(--glass-border);
    animation: modalSlide 0.3s ease;
    position: relative;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header h3 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    text-align: center;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.modal-buttons button {
    flex: 1;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--gradient-primary);
    transform: rotate(90deg);
}

/* ========================================
   Utilities
   ======================================== */
.hidden-form {
    display: none;
}

.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
    }

    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 4rem 0 3rem;
    }

    .hero-icon {
        font-size: 4rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .hero-stats {
        gap: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: none;
    }

    .contact-card {
        padding: 3rem 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .modal-content {
        padding: 2rem;
    }

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

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .plan-price {
        font-size: 2.5rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }
}