/* ============================================
   Learn with O.J. - Modern Landing Page Styles
   ============================================ */

/* CSS Custom Properties */
:root {
    --color-bg: #0a0f1a;
    --color-bg-alt: #0f1524;
    --color-bg-card: #141c2e;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-text-dim: #64748b;
    --color-white: #ffffff;
    --color-accent: #38b6c1;
    --color-accent-hover: #4fd1dc;
    --color-accent-dim: rgba(56, 182, 193, 0.15);
    --color-accent-glow: rgba(56, 182, 193, 0.25);
    --color-border: rgba(255, 255, 255, 0.08);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-max: 720px;
    --container-narrow: 600px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.25);
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 15, 26, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    max-width: 900px;
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.btn-header {
    display: none;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-white);
    background: var(--color-accent);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.btn-header:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

@media (min-width: 640px) {
    .btn-header {
        display: inline-flex;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: 3rem 0 2rem;
    text-align: center;
}

.hero-content {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

/* Hero Video */
.hero-video-wrapper {
    margin-bottom: 1.5rem;
}

.hero-video {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-accent-dim), var(--shadow-lg);
}

@media (min-width: 480px) {
    .hero-video {
        width: 160px;
        height: 160px;
    }
}

@media (min-width: 640px) {
    .hero-video {
        width: 180px;
        height: 180px;
    }
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.hero-note {
    font-size: 0.875rem;
    color: var(--color-text-dim);
}

/* ============================================
   Primary Button
   ============================================ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-accent) 0%, #2a9fa8 100%);
    border: none;
    border-radius: var(--radius-full);
    text-decoration: none;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-base);
    box-shadow: 0 4px 14px rgba(56, 182, 193, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 182, 193, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-full {
    width: 100%;
}

/* ============================================
   Credentials Section
   ============================================ */
.credentials {
    padding: 2rem 0;
    border-bottom: 1px solid var(--color-border);
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    text-align: center;
}

.credential {
    padding: 1rem 0.5rem;
}

.credential-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.credential-label {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (min-width: 480px) {
    .credential-value {
        font-size: 1.75rem;
    }

    .credential-label {
        font-size: 0.8125rem;
    }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 3rem 0;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.section-intro {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* ============================================
   Checklist (Who This Is For)
   ============================================ */
.checklist {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checklist-item::before {
    content: '';
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    margin-top: 3px;
    background-color: var(--color-accent);
    mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='currentColor' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
    mask-size: contain;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='currentColor' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
    -webkit-mask-size: contain;
}

.checklist-item span {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.5;
}

p {
    margin-top: 1rem;
}
/* ============================================
   Features Grid (What You Get)
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 560px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.feature-card:hover {
    border-color: rgba(56, 182, 193, 0.3);
    transform: translateY(-2px);
}

.feature-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-dim);
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ============================================
   Topics Grid (What We Can Cover)
   ============================================ */
.topics-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

.topic-tag {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.topic-tag:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-dim);
}

/* ============================================
   Steps (How It Works)
   ============================================ */
.steps {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.step {
    display: flex;
    gap: 0.75rem;
}

.step-number {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    border-radius: 50%;
}

.step-content {
    flex: 1;
    padding-top: 1px;
}

.step-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.25rem;
}

.step-content p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.step-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.step-link:hover {
    color: var(--color-accent-hover);
}

.arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.step-link:hover .arrow-icon {
    transform: translateX(3px);
}

/* ============================================
   About Section
   ============================================ */
.about-layout {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    text-align: center;
}

@media (min-width: 600px) {
    .about-layout {
        flex-direction: row;
        text-align: left;
        gap: 2.5rem;
    }
}

.about-image {
    flex-shrink: 0;
}

.about-headshot {
    width: 140px;
    height: 140px;
    border-radius: var(--radius-md);
    object-fit: cover;
    object-position: center 20%;
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

@media (min-width: 600px) {
    .about-headshot {
        width: 160px;
        height: 160px;
    }
}

.about-video {
    width: 100%;
    max-width: 240px;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-md);
    object-fit: cover;
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
    .about-video {
        max-width: 280px;
    }
}

.about-content h2 {
    margin-bottom: 1rem;
}

.about-content p {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.about-content p:last-of-type:not(.about-signature) {
    margin-bottom: 1rem;
}

.about-signature {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    font-style: italic;
    margin-bottom: 0;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing-card {
    max-width: 400px;
    margin: 0 auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
}

.pricing-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    margin-bottom: 1.5rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.02em;
}

.price-term {
    font-size: 1rem;
    color: var(--color-text-dim);
    margin-left: 0.25rem;
}

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

.pricing-features li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9375rem;
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.pricing-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.pricing-features li:last-child {
    margin-bottom: 0;
}

.pricing-note {
    margin-top: 1.25rem;
    font-size: 0.875rem;
    color: var(--color-text-dim);
}

.pricing-note a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.pricing-note a:hover {
    color: var(--color-accent-hover);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.125rem 1.25rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-white);
    cursor: pointer;
    list-style: none;
    transition: background var(--transition-fast);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-dim);
    transition: transform var(--transition-base);
}

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

.faq-item summary:hover {
    background: rgba(255, 255, 255, 0.02);
}

.faq-item p {
    padding: 0 1.25rem 1.25rem;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ============================================
   Vision Section
   ============================================ */
.vision-content {
    max-width: 540px;
    margin: 0 auto;
    text-align: center;
}

.vision-content h2 {
    margin-bottom: 1.25rem;
}

.vision-content p {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.vision-content p:last-child {
    margin-bottom: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--color-border);
}

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

.footer-brand {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-dim);
}

.footer-email a {
    font-size: 0.875rem;
    color: var(--color-text-dim);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-email a:hover {
    color: var(--color-accent);
}

/* ============================================
   Mobile Sticky CTA
   ============================================ */
.mobile-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.5rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
    background: rgba(10, 15, 26, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--color-border);
    z-index: 100;
}

.btn-mobile {
    width: 100%;
}

@media (max-width: 639px) {
    .mobile-cta {
        display: block;
    }

    /* Add padding to footer so it's not hidden behind sticky CTA */
    .footer {
        padding-bottom: 6rem;
    }
}

/* ============================================
   Animations
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(16px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .hero-video-wrapper {
        animation: fadeInUp 0.5s ease-out;
    }

    .hero-content {
        animation: fadeInUp 0.6s ease-out;
    }

    .credentials-grid {
        animation: fadeInUp 0.6s ease-out 0.1s both;
    }
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 639px) {
    .hero {
        padding: 3rem 0 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .feature-card {
        padding: 1.25rem;
    }

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

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

@media (max-width: 400px) {
    .credentials-grid {
        gap: 0.5rem;
    }

    .credential {
        padding: 0.75rem 0.25rem;
    }

    .credential-value {
        font-size: 1.25rem;
    }

    .credential-label {
        font-size: 0.6875rem;
    }
}

/* ============================================
   Link Styles
   ============================================ */
a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}