/* ============================================
   BRAIN SUPPORT — LANDING PAGE
   ============================================ */

/* ---- Animated gradient background ---- */
.landing-bg {
    position: fixed;
    inset: 0;
    background: #0A0A0F;
    overflow: hidden;
    z-index: 0;
}

.landing-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 229, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 0, 229, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(41, 121, 255, 0.05) 0%, transparent 50%);
    animation: gradientDrift 20s ease-in-out infinite;
}

@keyframes gradientDrift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, -3%) rotate(1deg); }
    66% { transform: translate(-2%, 2%) rotate(-1deg); }
}

/* ---- Grid pattern overlay ---- */
.landing-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ---- Floating particles ---- */
.landing-particles {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: particleFloat linear infinite;
    opacity: 0;
}

.particle:nth-child(1) { width: 3px; height: 3px; left: 10%; background: #00E5FF; animation-duration: 18s; animation-delay: 0s; }
.particle:nth-child(2) { width: 2px; height: 2px; left: 25%; background: #FF00E5; animation-duration: 22s; animation-delay: 3s; }
.particle:nth-child(3) { width: 4px; height: 4px; left: 40%; background: #2979FF; animation-duration: 16s; animation-delay: 1s; }
.particle:nth-child(4) { width: 2px; height: 2px; left: 55%; background: #76FF03; animation-duration: 20s; animation-delay: 5s; }
.particle:nth-child(5) { width: 3px; height: 3px; left: 70%; background: #00E5FF; animation-duration: 24s; animation-delay: 2s; }
.particle:nth-child(6) { width: 2px; height: 2px; left: 85%; background: #FF00E5; animation-duration: 19s; animation-delay: 4s; }
.particle:nth-child(7) { width: 3px; height: 3px; left: 15%; background: #FFD600; animation-duration: 21s; animation-delay: 6s; }
.particle:nth-child(8) { width: 2px; height: 2px; left: 60%; background: #2979FF; animation-duration: 17s; animation-delay: 7s; }
.particle:nth-child(9) { width: 4px; height: 4px; left: 35%; background: #00E5FF; animation-duration: 23s; animation-delay: 1.5s; }
.particle:nth-child(10) { width: 2px; height: 2px; left: 90%; background: #76FF03; animation-duration: 15s; animation-delay: 3.5s; }

@keyframes particleFloat {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* ---- Content wrapper ---- */
.landing-content {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    overflow-y: auto;
}

/* ---- Hero section ---- */
.landing-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
}

.hero-logo {
    width: min(700px, 90vw);
    margin-bottom: 1.5rem;
    animation: heroFadeIn 1.2s ease-out;
    filter: drop-shadow(0 0 40px rgba(0, 229, 255, 0.15));
}

.hero-tagline {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    color: rgba(255, 255, 255, 0.5);
    font-weight: 300;
    letter-spacing: 0.1em;
    margin-bottom: 2.5rem;
    animation: heroFadeIn 1.2s ease-out 0.3s both;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: heroFadeIn 1.2s ease-out 0.6s both;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- CTA Buttons ---- */
.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #000;
    background: #00E5FF;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.3);
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 229, 255, 0.5), 0 12px 40px rgba(0, 0, 0, 0.4);
    filter: brightness(1.1);
}

.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #FF00E5;
    background: transparent;
    border: 1px solid rgba(255, 0, 229, 0.4);
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-secondary:hover {
    background: rgba(255, 0, 229, 0.08);
    border-color: rgba(255, 0, 229, 0.7);
    box-shadow: 0 0 20px rgba(255, 0, 229, 0.2);
    transform: translateY(-2px);
}

/* ---- Scroll indicator ---- */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollBounce 2s ease-in-out infinite, heroFadeIn 1.2s ease-out 1s both;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 24px;
    border-right: 2px solid rgba(0, 229, 255, 0.4);
    border-bottom: 2px solid rgba(0, 229, 255, 0.4);
    transform: rotate(45deg);
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
    50% { transform: translateX(-50%) translateY(12px); opacity: 1; }
}

/* ---- Section shared ---- */
.landing-section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #00E5FF, #FF00E5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: rgba(255, 255, 255, 0.45);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3.5rem;
}

/* ---- Feature cards grid ---- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid rgba(0, 229, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--card-accent, #00E5FF), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    border-color: rgba(0, 229, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 229, 255, 0.05);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
    font-size: 1.5rem;
}

.feature-card h3 {
    color: #fff;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* Card accent colors */
.feature-card[data-accent="cyan"] { --card-accent: #00E5FF; }
.feature-card[data-accent="magenta"] { --card-accent: #FF00E5; }
.feature-card[data-accent="lime"] { --card-accent: #76FF03; }
.feature-card[data-accent="blue"] { --card-accent: #2979FF; }
.feature-card[data-accent="amber"] { --card-accent: #FFD600; }
.feature-card[data-accent="red"] { --card-accent: #FF1744; }

.feature-card[data-accent="cyan"] .feature-icon { background: rgba(0, 229, 255, 0.12); color: #00E5FF; }
.feature-card[data-accent="magenta"] .feature-icon { background: rgba(255, 0, 229, 0.12); color: #FF00E5; }
.feature-card[data-accent="lime"] .feature-icon { background: rgba(118, 255, 3, 0.12); color: #76FF03; }
.feature-card[data-accent="blue"] .feature-icon { background: rgba(41, 121, 255, 0.12); color: #2979FF; }
.feature-card[data-accent="amber"] .feature-icon { background: rgba(255, 214, 0, 0.12); color: #FFD600; }
.feature-card[data-accent="red"] .feature-icon { background: rgba(255, 23, 68, 0.12); color: #FF1744; }

/* ---- Architecture showcase ---- */
.arch-showcase {
    padding: 4rem 2rem 6rem;
    text-align: center;
}

.arch-image {
    width: min(1100px, 95vw);
    border-radius: 16px;
    border: 1px solid rgba(0, 229, 255, 0.15);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 229, 255, 0.05);
    transition: all 0.4s ease;
}

.arch-image:hover {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6), 0 0 60px rgba(0, 229, 255, 0.08);
    transform: scale(1.01);
}

/* ---- Stats bar ---- */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    padding: 3rem 2rem;
    margin: 0 auto;
    max-width: 900px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #00E5FF, #2979FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
    margin-top: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ---- Tech stack badges ---- */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    padding: 0 2rem 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.tech-badge {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.55);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.tech-badge:hover {
    border-color: rgba(0, 229, 255, 0.3);
    color: #00E5FF;
    background: rgba(0, 229, 255, 0.06);
}

/* ---- Footer CTA ---- */
.landing-footer {
    text-align: center;
    padding: 5rem 2rem;
    border-top: 1px solid rgba(0, 229, 255, 0.06);
}

.footer-brand {
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.85rem;
    margin-top: 2rem;
}

/* ---- Fade-in on scroll ---- */
.fade-in-section {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- Responsive ---- */

/* Tablet */
@media (max-width: 960px) {
    .landing-section { padding: 4rem 1.5rem; }
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .stats-bar { gap: 2rem; padding: 2.5rem 1.5rem; }
    .stat-number { font-size: 2.2rem; }
    .arch-image { border-radius: 12px; }
    .hero-logo { width: min(550px, 85vw); }
    .hero-cta-group { gap: 0.75rem; }
}

/* Mobile */
@media (max-width: 600px) {
    .landing-hero { padding: 1.5rem; min-height: 90vh; }
    .hero-logo { width: 92vw; margin-bottom: 1rem; }
    .hero-tagline { font-size: 0.95rem; letter-spacing: 0.05em; margin-bottom: 2rem; }
    .cta-primary, .cta-secondary {
        padding: 0.85rem 1.5rem;
        font-size: 0.95rem;
        width: 100%;
        justify-content: center;
    }
    .hero-cta-group { flex-direction: column; width: 100%; max-width: 320px; }
    .scroll-indicator { bottom: 1rem; }
    .landing-section { padding: 3rem 1.25rem; }
    .section-title { font-size: 1.5rem; }
    .section-subtitle { font-size: 0.95rem; margin-bottom: 2rem; }
    .features-grid { grid-template-columns: 1fr; gap: 1rem; }
    .feature-card { padding: 1.5rem; }
    .feature-card h3 { font-size: 1.05rem; }
    .stats-bar { gap: 1.5rem; padding: 2rem 1rem; }
    .stat-number { font-size: 1.8rem; }
    .stat-label { font-size: 0.75rem; }
    .tech-stack { gap: 0.5rem; padding: 0 1rem 3rem; }
    .tech-badge { font-size: 0.7rem; padding: 0.3rem 0.75rem; }
    .arch-showcase { padding: 2rem 1rem 4rem; }
    .arch-image { border-radius: 10px; }
    .landing-footer { padding: 3rem 1.5rem; }
    .landing-footer .cta-primary { width: auto; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
    .pricing-card-featured { transform: none; }
}

/* ---- Pricing Section ---- */
.pricing-section {
    padding: 6rem 2rem;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

.pricing-card {
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 229, 255, 0.2);
}

.pricing-card-featured {
    border-color: rgba(0, 229, 255, 0.4);
    background: rgba(0, 229, 255, 0.03);
    transform: scale(1.03);
}

.pricing-card-featured:hover {
    transform: scale(1.03) translateY(-4px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #00E5FF, #2979FF);
    color: #0A0A0F;
    padding: 4px 20px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-tier-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 0.3rem;
}

.price-currency {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00E5FF, #2979FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.price-period {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.4);
}

.pricing-annual {
    font-size: 0.8rem;
    color: rgba(0, 229, 255, 0.6);
    margin-bottom: 1rem;
}

.pricing-desc {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem 0;
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.75);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-feature-disabled {
    color: rgba(255, 255, 255, 0.25) !important;
}

.pricing-cta {
    display: inline-block;
    padding: 12px 32px;
    border: 1px solid rgba(0, 229, 255, 0.4);
    color: #00E5FF;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.pricing-cta:hover {
    background: rgba(0, 229, 255, 0.1);
    border-color: #00E5FF;
}

.pricing-cta-featured {
    background: linear-gradient(135deg, #00E5FF, #2979FF);
    color: #0A0A0F;
    border: none;
}

.pricing-cta-featured:hover {
    background: linear-gradient(135deg, #00E5FF, #448AFF);
    color: #0A0A0F;
    opacity: 0.9;
}