/* Landing Page Styles */
.landing-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: all var(--transition-slow);
    background: transparent;
}

.landing-header.scrolled {
    background: var(--surface);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

[data-theme="dark"] .landing-header.scrolled {
    background: rgba(15,23,42,0.9);
}

.landing-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.landing-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.landing-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
}

.landing-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.landing-nav a {
    position: relative;
}

.landing-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width var(--transition);
}

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

.landing-nav a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition);
}

.landing-nav a:hover {
    color: var(--text);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    cursor: pointer;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    padding: 8px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 50% 50%, rgba(99,102,241,0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(14,165,233,0.06) 0%, transparent 50%);
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, -2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

.hero-content {
    max-width: 860px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(14px);
}

.hero h1 {
    font-size: 3.75rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-telegram {
    background: #0088cc;
    color: white;
    border-color: #0088cc;
}

.btn-telegram:hover {
    background: #0077b5;
    border-color: #0077b5;
    color: white;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.hero-stat {
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(16px);
}

.hero-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* Sections */
.section {
    padding: 100px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* How it works */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step {
    text-align: center;
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(18px);
    transition: all var(--transition-slow);
}

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

.step-number {
    width: 56px;
    height: 56px;
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.step h3 {
    margin-bottom: 8px;
    font-size: 1.125rem;
}

.step p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(18px);
    transition: all var(--transition-slow);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: start;
}

.pricing-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all var(--transition-slow);
    position: relative;
    backdrop-filter: blur(18px);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99,102,241,0.2);
    transform: scale(1.03);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.pricing-price {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 4px;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-tertiary);
}

.pricing-desc {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-bottom: 24px;
    min-height: 40px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-light);
}

.pricing-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: 700;
}

.pricing-card .btn {
    width: 100%;
}

/* FAQ */
.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all var(--transition);
    background: var(--surface);
    backdrop-filter: blur(16px);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-question {
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 500;
    color: var(--text);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-size: 1rem;
}

.faq-question::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--text-tertiary);
    transition: transform var(--transition);
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-answer-inner {
    padding: 0 20px 18px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Contact */
.contact-section {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 64px;
    text-align: center;
    border: 1px solid var(--border);
    backdrop-filter: blur(18px);
}

.contact-section h2 {
    margin-bottom: 12px;
}

.contact-section p {
    max-width: 500px;
    margin: 0 auto 32px;
}

/* Footer */
.landing-footer {
    border-top: 1px solid var(--border);
    padding: 48px 24px 24px;
}

.landing-footer .container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 8px;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

@media (max-width: 1024px) {
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .landing-nav a:not(.btn) { display: none; }
    .mobile-menu-btn { display: block; }

    .hero h1 { font-size: 2.25rem; }
    .hero-subtitle { font-size: 1.0625rem; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }

    .steps { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .pricing-card.featured { transform: none; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .section { padding: 60px 16px; }
    .section-header h2 { font-size: 1.75rem; }
    .contact-section { padding: 40px 24px; }
}