/* === SITE HEADER === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) 0;
    transition: all var(--transition);
    background: transparent;
}
.site-header.scrolled {
    background: rgba(11, 5, 20, 0.9);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    padding: var(--space-md) 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.site-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: var(--fw-bold);
    color: var(--color-white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.site-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-btn);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.main-nav { display: flex; align-items: center; gap: var(--space-lg); }
.main-nav a {
    color: var(--color-text-secondary);
    font-size: var(--fs-small);
    font-weight: var(--fw-medium);
    transition: color var(--transition);
    text-decoration: none;
}
.main-nav a:hover { color: var(--color-white); }

.header-cta .btn { padding: 0.625rem 1.5rem; font-size: var(--fs-small); }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition);
}

/* === HERO === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
    padding: calc(80px + var(--space-3xl)) 0 var(--space-4xl);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139,92,246,0.12) 0%, transparent 70%);
    animation: hero-orb-1 12s ease-in-out infinite;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(236,72,153,0.1) 0%, transparent 70%);
    animation: hero-orb-2 15s ease-in-out infinite;
}

@keyframes hero-orb-1 {
    0%,100% { transform: translate(0,0); }
    33% { transform: translate(80px, 60px); }
    66% { transform: translate(-40px, 30px); }
}
@keyframes hero-orb-2 {
    0%,100% { transform: translate(0,0); }
    33% { transform: translate(-60px, -40px); }
    66% { transform: translate(40px, -20px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 18px;
    background: rgba(139,92,246,0.12);
    border: 1px solid var(--color-border-glow);
    border-radius: var(--radius-full);
    font-size: var(--fs-small);
    color: var(--color-primary-light);
    margin-bottom: var(--space-xl);
    animation: fadeInDown 0.6s ease-out;
}

.hero h1 {
    font-size: var(--fs-hero);
    font-weight: var(--fw-bold);
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease-out;
}
.hero h1 .gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: var(--fs-body-lg);
    color: var(--color-text-secondary);
    line-height: var(--lh-normal);
    margin-bottom: var(--space-2xl);
    max-width: 540px;
    animation: fadeInUp 1s ease-out;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
    animation: fadeInUp 1.2s ease-out;
}

.hero-proof {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    animation: fadeInUp 1.4s ease-out;
}
.hero-proof-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
    font-size: var(--fs-small);
}
.hero-proof-item .icon {
    color: var(--color-success);
    font-size: 1.1rem;
}

.hero-visual {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-visual img {
    max-width: 480px;
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

/* === TRUST BAR === */
.trust-bar {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2xl) 0;
}
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

/* === SECTIONS === */
.section {
    padding: var(--section-py) 0;
    position: relative;
}
.section-alt {
    background: var(--color-surface);
}
.section-glow {
    position: relative;
}
.section-glow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 400px;
    transform: translate(-50%, -50%);
    background: var(--gradient-glow);
    pointer-events: none;
}

/* === GRIDS === */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-2xl); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-2xl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); }

/* === CHAT PREVIEW === */
.chat-section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}
.chat-preview-wrap {
    display: flex;
    justify-content: center;
}
.chat-preview-wrap img {
    max-width: 400px;
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border: 1px solid var(--color-border);
}
.chat-features { list-style: none; }
.chat-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    color: var(--color-text-secondary);
}
.chat-features li .feat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-glass);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.chat-features li strong {
    display: block;
    color: var(--color-white);
    margin-bottom: 4px;
}

/* === CTA BANNER === */
.cta-banner {
    padding: var(--section-py) 0;
    position: relative;
    text-align: center;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    opacity: 0.5;
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: var(--container-narrow);
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: var(--fs-h1);
    margin-bottom: var(--space-lg);
}
.cta-inner p {
    color: var(--color-text-secondary);
    font-size: var(--fs-body-lg);
    margin-bottom: var(--space-2xl);
}

/* === FOOTER === */
.site-footer {
    background: var(--color-bg-deep);
    border-top: 1px solid var(--color-border);
    padding: var(--space-4xl) 0 var(--space-2xl);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}
.footer-brand p {
    color: var(--color-text-secondary);
    font-size: var(--fs-small);
    margin-top: var(--space-md);
    line-height: var(--lh-normal);
}
.footer-col h4 {
    font-size: var(--fs-body);
    margin-bottom: var(--space-lg);
    color: var(--color-white);
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: var(--space-sm); }
.footer-links a {
    color: var(--color-text-muted);
    font-size: var(--fs-small);
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-primary-light); }

.footer-legal {
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg) 0;
}
.footer-legal__links {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-xl);
    padding: 0;
    margin: 0;
}
.footer-legal__links a {
    color: var(--color-text-muted);
    font-size: var(--fs-xs);
    transition: color var(--transition);
}
.footer-legal__links a:hover { color: var(--color-primary-light); }

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-content { max-width: 100%; }
    .hero-desc { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-proof { justify-content: center; }
    .hero-visual { display: none; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .chat-section-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .main-nav { display: none; }
    .mobile-toggle { display: flex; }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(11,5,20,0.95);
        backdrop-filter: var(--backdrop-blur);
        padding: var(--space-xl);
        border-bottom: 1px solid var(--color-border);
    }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-card.featured { transform: none; }
    .pricing-card.featured:hover { transform: translateY(-4px); }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }
    .footer-legal__links { justify-content: center; }
}

@media (max-width: 480px) {
    .trust-grid { grid-template-columns: 1fr 1fr; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-proof { flex-direction: column; }
}