/* ══════════════════════════════════════════════════════════
   SENTINEL AI — Shared Components
   ══════════════════════════════════════════════════════════ */

/* ═══ PRELOADER ═══ */
.preloader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    transition: opacity 0.5s, visibility 0.5s;
}
.preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--text-bright);
    letter-spacing: -0.02em;
}
.preloader-logo svg { width: 28px; height: 28px; }
.preloader-ai {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.preloader-bar {
    width: 200px;
    height: 2px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
}
.preloader-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-main);
    border-radius: 2px;
    transition: width 0.3s;
}
.preloader-status {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-faint);
}

/* ═══ AMBIENT BACKGROUND ═══ */
.ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}
.ambient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}
.orb-1 {
    width: 600px; height: 600px;
    top: -200px; left: -100px;
    background: rgba(var(--purple-rgb), 0.08);
    animation: orbFloat1 20s ease-in-out infinite;
}
.orb-2 {
    width: 500px; height: 500px;
    bottom: -150px; right: -100px;
    background: rgba(var(--pink-rgb), 0.06);
    animation: orbFloat2 25s ease-in-out infinite;
}
.orb-3 {
    width: 400px; height: 400px;
    top: 40%; left: 60%;
    background: rgba(var(--blue-rgb), 0.05);
    animation: orbFloat3 18s ease-in-out infinite;
}

/* ═══ SCROLL PROGRESS ═══ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--gradient-main);
    z-index: var(--z-modal);
    transition: width 50ms linear;
}

/* ═══ NAVIGATION ═══ */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    height: 72px;
    z-index: var(--z-nav);
    background: rgba(5, 5, 16, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background var(--duration);
}
.nav.scrolled { background: rgba(5, 5, 16, 0.95); }
.nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--text-bright);
    letter-spacing: -0.02em;
}
.nav-brand svg { width: 24px; height: 24px; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--duration);
    position: relative;
}
.nav-link:hover { color: var(--text); }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    transition: width var(--duration);
}
.nav-link:hover::after { width: 100%; }
.nav-cta {
    padding: 8px 20px;
    background: var(--gradient-main);
    color: #fff !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--text-sm);
    transition: transform var(--duration-fast), box-shadow var(--duration);
}
.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(var(--purple-rgb), 0.3);
}
.nav-cta::after { display: none !important; }
.nav-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}
.nav-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--duration), opacity var(--duration);
}
.nav-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-menu-btn.active span:nth-child(2) { opacity: 0; }
.nav-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ═══ SECTIONS ═══ */
.section {
    position: relative;
    z-index: var(--z-base);
    padding: 80px 24px;
}
.section .container { max-width: 1200px; margin: 0 auto; }
.section-header {
    text-align: center;
    margin-bottom: 56px;
}
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--purple-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--text-bright);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 16px;
}
.section-desc {
    font-size: var(--text-lg);
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ═══ PAGE HERO (for subpages) ═══ */
.page-hero {
    position: relative;
    padding: 160px 24px 80px;
    text-align: center;
    overflow: hidden;
    z-index: var(--z-base);
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
    pointer-events: none;
}
.page-hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 500px;
    background: radial-gradient(ellipse at center,
        rgba(var(--purple-rgb), 0.12) 0%,
        rgba(var(--pink-rgb), 0.06) 40%,
        transparent 70%
    );
    pointer-events: none;
    animation: heroGlow 6s ease-in-out infinite;
}
.page-hero-content {
    position: relative;
    z-index: var(--z-raised);
    max-width: 720px;
    margin: 0 auto;
}
.page-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border: 1px solid rgba(var(--emerald-rgb), 0.2);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--emerald);
    margin-bottom: 32px;
    background: rgba(var(--emerald-rgb), 0.05);
}
.page-hero-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--emerald);
    animation: badgePulse 2s ease-in-out infinite;
}
.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    font-weight: 800;
    color: var(--text-bright);
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-bottom: 20px;
}
.page-hero-sub {
    font-size: var(--text-xl);
    color: var(--text-dim);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.5;
}

/* ═══ SECTION DIVIDERS ═══ */
.section-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hover), transparent);
    position: relative;
    z-index: 2;
}
.section-divider::after {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 40px;
    background: radial-gradient(ellipse at center, rgba(var(--purple-rgb), 0.08), transparent);
    pointer-events: none;
}

/* ═══ BUTTONS ═══ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: var(--text-sm);
    border: none;
    cursor: pointer;
    transition: transform var(--duration-fast), box-shadow var(--duration), background var(--duration);
}
.btn-primary {
    background: var(--gradient-main);
    color: #fff;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(var(--purple-rgb), 0.3);
}
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-hover);
    color: var(--text);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(var(--purple-rgb), 0.3);
    transform: translateY(-2px);
}

/* ═══ CARDS ═══ */
.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: transform var(--duration) var(--ease), border-color var(--duration), box-shadow var(--duration);
    position: relative;
    overflow: hidden;
}
.card:hover {
    transform: translateY(-4px);
    border-color: rgba(var(--purple-rgb), 0.2);
    box-shadow: var(--shadow-glow);
}
.card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-main);
    opacity: 0;
    transition: opacity var(--duration);
}
.card:hover::after { opacity: 1; }

/* ═══ PRICING CARDS (Index page section) ═══ */
.pricing-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: transform var(--duration) var(--ease), border-color var(--duration), box-shadow var(--duration);
    position: relative;
}
.pricing-card.featured {
    border-color: rgba(var(--purple-rgb), 0.4);
    transform: scale(1.03);
    box-shadow: var(--shadow-glow-xl);
}
.pricing-card:hover {
    transform: translateY(-6px);
    border-color: rgba(var(--purple-rgb), 0.3);
}
.pricing-card.featured:hover {
    transform: scale(1.03) translateY(-6px);
}
.pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--gradient-main);
    color: #fff;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: var(--radius-full);
    white-space: nowrap;
}
.pricing-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-2xl);
    color: var(--text-bright);
    margin-bottom: 8px;
}
.pricing-price {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: var(--text-4xl);
    color: var(--text-bright);
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}
.pricing-period {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-bottom: 28px;
}
.pricing-features {
    text-align: left;
    margin-bottom: 28px;
}
.pricing-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: var(--text-sm);
    color: var(--text-dim);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}
.pricing-feature:last-child { border-bottom: none; }
.pricing-check {
    color: var(--emerald);
    font-weight: 700;
    flex-shrink: 0;
}
.pricing-btn {
    display: block;
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--text-sm);
    text-align: center;
    transition: all var(--duration);
    border: 1px solid var(--border-hover);
    background: transparent;
    color: var(--text);
    cursor: pointer;
}
.pricing-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(var(--purple-rgb), 0.3);
}
.pricing-btn-primary {
    background: var(--gradient-main);
    border-color: transparent;
    color: #fff;
}
.pricing-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(var(--purple-rgb), 0.3);
}
.pricing-btn-ghost {
    background: transparent;
    border: 1px solid var(--border-hover);
    color: var(--text);
}

/* ═══ FAQ ═══ */
.faq-list {
    max-width: 720px;
    margin: 0 auto;
}
.faq-item {
    border-bottom: 1px solid var(--border);
}
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-bright);
    transition: color var(--duration);
}
.faq-q:hover { color: var(--purple-light); }
.faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-muted);
    transition: transform var(--duration), color var(--duration);
    flex-shrink: 0;
    margin-left: 16px;
}
.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--purple-light);
}
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease), padding 0.4s var(--ease);
}
.faq-item.active .faq-a {
    max-height: 300px;
    padding-bottom: 20px;
}
.faq-a-inner {
    font-size: var(--text-sm);
    color: var(--text-dim);
    line-height: 1.7;
}

/* ═══ CTA SECTION ═══ */
.cta-section {
    position: relative;
    z-index: var(--z-base);
    padding: 100px 24px;
    text-align: center;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center,
        rgba(var(--purple-rgb), 0.1) 0%,
        transparent 60%
    );
    pointer-events: none;
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
}
.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-bright);
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}
.cta-desc {
    font-size: var(--text-lg);
    color: var(--text-dim);
    margin-bottom: 32px;
    line-height: 1.6;
}
.cta-form {
    display: flex;
    gap: 12px;
    max-width: 460px;
    margin: 0 auto;
}
.cta-input {
    flex: 1;
    padding: 14px 20px;
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-bright);
    font-size: var(--text-sm);
    font-family: var(--font-body);
    outline: none;
    transition: border-color var(--duration);
}
.cta-input:focus { border-color: rgba(var(--purple-rgb), 0.5); }
.cta-input::placeholder { color: var(--text-faint); }

/* ═══ FOOTER ═══ */
.footer {
    position: relative;
    z-index: var(--z-base);
    border-top: 1px solid var(--border);
    padding: 60px 24px 40px;
}
.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--text-bright);
    margin-bottom: 12px;
}
.footer-brand svg { width: 22px; height: 22px; }
.footer-tagline {
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}
.footer-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--emerald);
}
.footer-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--emerald);
    animation: badgePulse 2s ease-in-out infinite;
}
.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.footer-col-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--text);
    margin-bottom: 4px;
}
.footer-col a {
    font-size: var(--text-sm);
    color: var(--text-muted);
    transition: color var(--duration);
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--text-faint);
}
.footer-socials {
    display: flex;
    gap: 16px;
}
.footer-socials a {
    color: var(--text-muted);
    transition: color var(--duration);
}
.footer-socials a:hover { color: var(--text); }
.footer-socials svg { width: 18px; height: 18px; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
    .nav { padding: 0 20px; }
    .nav-links {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(5, 5, 16, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: var(--z-nav);
    }
    .nav-links.open { display: flex; }
    .nav-link { font-size: var(--text-xl); }
    .nav-menu-btn { display: flex; }
    .section { padding: 60px 20px; }
    .page-hero { padding: 140px 20px 60px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}
@media (max-width: 480px) {
    .page-hero { padding: 120px 16px 48px; }
    .section { padding: 48px 16px; }
    .cta-form { flex-direction: column; }
}