/* ============================================
   OC-AI — Overclocked Technologies
   Global Styles
   Colors: Grey + Light Blue (#5BA4D9)
   ============================================ */

:root {
    --blue: #5BA4D9;
    --blue-light: #7BB8E3;
    --blue-dark: #3A8BC7;
    --blue-glow: rgba(91, 164, 217, 0.15);
    --blue-glow-strong: rgba(91, 164, 217, 0.3);
    --grey-900: #111318;
    --grey-850: #161920;
    --grey-800: #1C1F28;
    --grey-700: #252830;
    --grey-600: #33363F;
    --grey-500: #4A4D57;
    --grey-400: #6B6F7A;
    --grey-300: #9498A4;
    --grey-200: #BFC3CE;
    --grey-100: #E2E5EC;
    --white: #F5F7FA;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--grey-900);
    color: var(--grey-200);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ---- NAV ---- */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(17, 19, 24, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--grey-800);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.nav-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.02em;
}

.nav-logo-text span {
    color: var(--blue);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--grey-300);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--white);
}

/* ---- MOBILE NAV ---- */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--grey-200);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
}

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--blue);
    color: #FFFFFF;
    font-weight: 700;
}

.btn-primary:hover {
    background: var(--blue-dark);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--blue-glow-strong);
}

.btn-secondary {
    background: var(--grey-700);
    color: var(--grey-100);
    border: 1px solid var(--grey-600);
}

.btn-secondary:hover {
    background: var(--grey-600);
    border-color: var(--grey-500);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
    border-radius: 10px;
}

/* ---- HERO ---- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--grey-800);
    border: 1px solid var(--grey-700);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--grey-300);
    margin-bottom: 2rem;
}

.hero-badge span {
    color: var(--blue);
    font-weight: 600;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    max-width: 800px;
}

.hero h1 .accent {
    color: var(--blue);
}

.hero p {
    font-size: 1.25rem;
    color: var(--grey-300);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* ---- SECTION COMMON ---- */
section {
    padding: 6rem 2rem;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--grey-400);
    max-width: 600px;
    line-height: 1.7;
}

/* ---- HOW IT WORKS / STEPS ---- */
.how-it-works {
    background: var(--grey-850);
    border-top: 1px solid var(--grey-800);
    border-bottom: 1px solid var(--grey-800);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.step {
    padding: 2rem;
    background: var(--grey-800);
    border: 1px solid var(--grey-700);
    border-radius: 16px;
    transition: all 0.3s;
}

.step:hover {
    border-color: var(--blue);
    box-shadow: 0 0 30px var(--blue-glow);
    transform: translateY(-2px);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--blue-glow-strong);
    color: var(--blue);
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 1.25rem;
}

.step h3 {
    color: var(--white);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.step p {
    color: var(--grey-400);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ---- PRODUCT CARDS ---- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.product-card {
    padding: 2.5rem 2rem;
    background: var(--grey-800);
    border: 1px solid var(--grey-700);
    border-radius: 16px;
    transition: all 0.3s;
    position: relative;
}

.product-card:hover {
    border-color: var(--blue);
    box-shadow: 0 0 30px var(--blue-glow);
    transform: translateY(-3px);
}

.product-card.featured {
    border-color: var(--blue);
    background: linear-gradient(135deg, var(--grey-800) 0%, rgba(91, 164, 217, 0.05) 100%);
}

.product-card.featured::before {
    content: 'Most Popular';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--blue);
    color: var(--grey-900);
    padding: 0.25rem 1rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.product-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.product-target {
    font-size: 0.85rem;
    color: var(--grey-400);
    margin-bottom: 1.25rem;
}

.product-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.product-price-note {
    font-size: 0.8rem;
    color: var(--grey-500);
    margin-bottom: 1.5rem;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.4rem 0;
    color: var(--grey-300);
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.product-features li::before {
    content: '✓';
    color: var(--blue);
    font-weight: 700;
    flex-shrink: 0;
}

/* ---- FEATURES GRID ---- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature {
    padding: 2rem;
    background: var(--grey-800);
    border: 1px solid var(--grey-700);
    border-radius: 16px;
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature h3 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--grey-400);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ---- CHAT EXAMPLES (Companion page) ---- */
.chat-examples {
    display: grid;
    gap: 2rem;
    margin-top: 3rem;
    max-width: 650px;
}

.chat-window {
    background: var(--grey-800);
    border: 1px solid var(--grey-700);
    border-radius: 16px;
    overflow: hidden;
}

.chat-header {
    padding: 0.75rem 1.25rem;
    background: var(--grey-700);
    color: var(--grey-300);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.chat-bubble {
    margin: 0.75rem 1.25rem;
    padding: 0.85rem 1.15rem;
    border-radius: 16px;
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 85%;
}

.chat-bubble.ai {
    background: var(--blue-glow-strong);
    color: var(--grey-100);
    border-bottom-left-radius: 4px;
}

.chat-bubble.human {
    background: var(--grey-700);
    color: var(--grey-200);
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

/* ---- TAGLINE SECTION ---- */
.tagline-section {
    text-align: center;
    padding: 8rem 2rem;
    position: relative;
}

.tagline-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
    pointer-events: none;
}

.tagline {
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: var(--white);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.tagline .accent {
    color: var(--blue);
}

/* ---- CTA ---- */
.cta {
    background: var(--grey-850);
    border-top: 1px solid var(--grey-800);
    text-align: center;
    padding: 5rem 2rem;
}

.cta h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}

.cta p {
    color: var(--grey-400);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ---- FOOTER ---- */
footer {
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--grey-800);
}

.footer-brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--grey-400);
    margin-bottom: 0.5rem;
}

.footer-brand span {
    color: var(--blue);
}

.footer-sub {
    font-size: 0.85rem;
    color: var(--grey-500);
    margin-bottom: 0.5rem;
}

.footer-location {
    font-size: 0.8rem;
    color: var(--grey-600);
}

/* ---- TESTIMONIAL ---- */
.testimonial {
    background: var(--grey-800);
    border: 1px solid var(--grey-700);
    border-radius: 16px;
    padding: 2.5rem;
    max-width: 600px;
    margin: 2rem auto;
    text-align: center;
}

.testimonial-text {
    font-size: 1.15rem;
    color: var(--grey-200);
    font-style: italic;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.testimonial-author {
    font-size: 0.9rem;
    color: var(--grey-400);
    font-weight: 600;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    nav {
        padding: 1rem 1.25rem;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: block;
    }

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

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

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

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

    section {
        padding: 4rem 1.25rem;
    }

    .hero {
        padding: 7rem 1.25rem 3rem;
    }
}