/* ===========================================
   AdGen AI - Additional Sections Styles
   Features, Timeline, Tech Stack, Pricing, FAQ, CTA
   =========================================== */

/* ========== Section Header Centered ========== */
.section-header-center {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

/* ========== Features Section ========== */
.features {
    padding: var(--spacing-3xl) 0;
    position: relative;
    background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.1), transparent 50%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    position: relative;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.feature-icon {
    position: relative;
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.icon-glow {
    position: absolute;
    inset: -10px;
    background: radial-gradient(circle, var(--primary), transparent);
    filter: blur(20px);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover .icon-glow {
    opacity: 0.6;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.feature-list li {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.feature-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.feature-card:hover .feature-overlay {
    opacity: 0.05;
}

/* ========== Timeline (How It Works) ========== */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    right: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    transform: translateX(50%);
}

@media (max-width: 768px) {
    .timeline::before {
        right: 30px;
    }
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
}

.timeline-number {
    position: absolute;
    right: 50%;
    transform: translateX(50%);
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.5);
    z-index: 2;
}

@media (max-width: 768px) {
    .timeline-number {
        right: 0;
        transform: none;
    }
}

.timeline-content {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-right: calc(50% + 60px);
    position: relative;
}

@media (max-width: 768px) {
    .timeline-content {
        margin-right: 0;
        margin-left: 80px;
    }
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 0;
    margin-left: calc(50% + 60px);
}

@media (max-width: 768px) {
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 80px;
    }
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-icon {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    font-size: 2rem;
    opacity: 0.3;
}

/* ========== Tech Stack ========== */
.tech-stack {
    padding: var(--spacing-3xl) 0;
}

.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.tech-category {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.tech-category h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    text-align: center;
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.tech-logo {
    font-size: 2rem;
}

.tech-item span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.architecture-diagram {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    text-align: center;
}

.diagram-placeholder h4 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ========== Pricing ========== */
.pricing {
    padding: var(--spacing-3xl) 0;
    background: radial-gradient(circle at 50% 100%, rgba(236, 72, 153, 0.1), transparent 50%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto var(--spacing-xl);
}

.pricing-card {
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.pricing-card.popular {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -15px;
    right: 50%;
    transform: translateX(50%);
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.pricing-amount {
    margin-bottom: var(--spacing-md);
}

.pricing-amount .amount {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pricing-amount .currency {
    font-size: 1rem;
    color: var(--text-muted);
    margin-right: 0.5rem;
}

.pricing-desc {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
    text-align: right;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.pricing-note {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.pricing-note p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-muted);
}

/* ========== FAQ ========== */
.faq {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    user-select: none;
}

.faq-question h4 {
    font-size: 1.125rem;
    margin: 0;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

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

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ========== Final CTA ========== */
.cta-final {
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    inset: 0;
}

.cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.cta-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary), transparent);
    top: -300px;
    right: -300px;
}

.cta-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--secondary), transparent);
    bottom: -250px;
    left: -250px;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-3xl);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-inline: auto;
}

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

.btn-xl {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

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

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

.cta-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

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

.cta-stat strong {
    display: block;
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta-stat span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========== Footer ========== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--primary);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-desc {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    borderradius: 50%;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

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

.made-with {
    margin-top: 0.5rem;
}

.heart {
    color: var(--error);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

/* ========== Back to Top Button ========== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.7);
}