/* ==========================================================================
   LANDING PAGE AESTHETICS (Flat Dark Theme)
   ========================================================================== */
.landing-body {
    display: block;
    margin: 0;
    padding: 0;
    background-color: var(--bg-main);
}

/* Header & Nav */
.landing-header {
    position: sticky;
    top: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
}

.brand-logo {
    font-size: 1.8rem;
    color: var(--color-blue);
}

.brand-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a:not(.btn) {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:not(.btn):hover {
    color: var(--text-main);
}

/* Hero Banner */
.hero-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 24px 80px;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 850px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.hero-badge {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--color-blue);
    padding: 6px 14px;
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.hero-content h1 {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1.5px;
}

.gradient-text {
    color: var(--color-blue);
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 680px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 15px;
}

/* Features Section */
.features-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

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

.feature-card {
    padding: 40px 30px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-blue);
}

.feature-icon {
    font-size: 2.2rem;
    color: var(--color-blue);
    margin-bottom: 8px;
}

.feature-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Code Showcase */
.integration-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
}

.sdk-container {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
}

.sdk-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.sdk-tab-btn {
    flex: 1;
    padding: 18px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: color 0.2s;
}

.sdk-tab-btn:hover {
    color: var(--text-main);
    background: var(--bg-surface-hover);
}

.sdk-tab-btn.active {
    color: var(--text-main);
    border-bottom: 3px solid var(--color-blue);
    background: var(--bg-surface-hover);
}

.sdk-content-wrapper {
    padding: 24px;
}

.sdk-tab-content {
    display: none;
    flex-direction: column;
    gap: 16px;
}

.sdk-tab-content.active-sdk {
    display: flex;
}

.sdk-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.code-box {
    display: block;
    padding: 24px;
    background: #09090b;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.6;
    color: #e4e4e7;
    overflow-x: auto;
    max-height: 400px;
    text-align: left;
}

.code-import { color: #a78bfa; font-weight: bold; }
.code-kw { color: #f472b6; font-weight: bold; }
.code-str { color: #34d399; }
.code-fn { color: #60a5fa; }
.code-comment { color: #71717a; font-style: italic; }

/* FAQ Section */
.faq-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 24px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question:hover {
    background: var(--bg-surface-hover);
}

.faq-icon {
    font-size: 0.95rem;
    color: var(--color-blue);
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.6;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 16px 24px 24px;
    border-top: 1px solid var(--border-color);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* Pricing Grid */
.pricing-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.pricing-card {
    padding: 40px 32px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: relative;
}

.pricing-card.premium-tier {
    border-color: var(--color-blue);
    background: #191c24; /* slight blue tint */
}

.pricing-card.premium-tier::before {
    content: 'RECOMMENDED';
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--color-blue);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 99px;
    letter-spacing: 1px;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.pricing-header .price {
    font-size: 2.2rem;
    font-weight: 800;
    margin-top: 10px;
    display: flex;
    align-items: baseline;
}

.pricing-header .price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-left: 4px;
}

.pricing-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.pricing-features li i {
    color: var(--color-green);
    font-size: 0.9rem;
}

/* Footer */
.landing-footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-surface);
    padding: 60px 24px;
    margin-top: 100px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-main);
}

.copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
}