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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
}

/* ── LIGHT THEME ── */
[data-theme="light"] {
    --bg: #f0f4ff;
    --bg-alt: #ffffff;
    --bg-card: #ffffff;
    --bg-card2: #f8fafc;
    --border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --brand: #2563eb;
    --brand-light: #eff6ff;
    --brand-dark: #1d4ed8;
    --accent: #10b981;
    --nav-bg: rgba(255,255,255,0.85);
    --hero-gradient: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 30%, #f0fdf4 70%, #f8fafc 100%);
    --mesh1: rgba(59,130,246,0.12);
    --mesh2: rgba(16,185,129,0.08);
    --feature-icon-bg: #eff6ff;
    --step-bg: #f1f5f9;
    --pricing-highlight: linear-gradient(135deg, #1d4ed8, #2563eb);
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
}

/* ── DARK THEME ── */
[data-theme="dark"] {
    --bg: #060b14;
    --bg-alt: #0d1626;
    --bg-card: #111827;
    --bg-card2: #0d1626;
    --border: #1e2d45;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    --brand: #BC232C;
    --brand-light: rgba(59,130,246,0.12);
    --brand-dark: #2563eb;
    --accent: #10b981;
    --nav-bg: rgba(6,11,20,0.9);
    --hero-gradient: linear-gradient(135deg, #060b14 0%, #0c1a30 40%, #071518 80%, #060b14 100%);
    --mesh1: rgba(59,130,246,0.08);
    --mesh2: rgba(16,185,129,0.06);
    --feature-icon-bg: rgba(59,130,246,0.1);
    --step-bg: #0d1626;
    --pricing-highlight: linear-gradient(135deg, #1d4ed8, #BC232C);
    --footer-bg: #030609;
    --footer-text: #475569;
}

body {
    background: var(--bg);
    color: var(--text-primary);
    transition: background 0.4s, color 0.4s;
}

/* NAV */
.nav {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.nav-link {
    color: var(--text-secondary);
    transition: color 0.2s;
}

    .nav-link:hover {
        color: var(--brand);
    }

/* HERO */
.hero-section {
    background: var(--hero-gradient);
    position: relative;
    overflow: hidden;
}

.mesh-blob {
    background: radial-gradient(circle, var(--mesh1) 0%, transparent 70%);
}

.mesh-blob2 {
    background: radial-gradient(circle, var(--mesh2) 0%, transparent 70%);
}

.hero-badge {
    background: var(--brand-light);
    color: var(--brand);
    border: 1px solid rgba(59,130,246,0.2);
}

.hero-title {
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--brand) 0%, #6366f1 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 16px rgba(37,99,235,0.35);
    transition: all 0.25s;
}

    .btn-primary:hover {
        background: var(--brand-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(37,99,235,0.45);
    }

.btn-ghost {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text-primary);
    transition: all 0.25s;
}

    .btn-ghost:hover {
        border-color: var(--brand);
        color: var(--brand);
        transform: translateY(-1px);
    }

/* CARDS */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover, 0 16px 48px rgba(0,0,0,0.1));
        border-color: rgba(59,130,246,0.3);
    }

[data-theme="dark"] .card:hover {
    box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.card-alt {
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: 16px;
}

.feature-icon {
    background: var(--feature-icon-bg);
    color: var(--brand);
    border-radius: 12px;
}

[data-theme="dark"] .card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 24px rgba(0,0,0,0.15);
}

/* SECTIONS */
.section-tag {
    background: var(--brand-light);
    color: var(--brand);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: inline-block;
    padding: 4px 14px;
}

.section-title {
    color: var(--text-primary);
}

.section-sub {
    color: var(--text-secondary);
}

.divider {
    background: var(--border);
}

/* STATS */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
}

/* STEPS */
.step-num {
    background: var(--brand);
    color: #fff;
    border-radius: 50%;
    font-family: 'Syne', sans-serif;
    font-weight: 700;
}

.step-line {
    background: var(--border);
}

.step-card {
    background: var(--step-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
}

/* PRICING */
.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: all 0.3s;
}

    .pricing-card:hover {
        transform: translateY(-6px);
    }

.pricing-popular {
    background: var(--pricing-highlight);
    color: #fff;
    border: none;
}

    .pricing-popular .price-text {
        color: #fff;
    }

    .pricing-popular .feature-item {
        color: rgba(255,255,255,0.85);
    }

    .pricing-popular .section-sub {
        color: rgba(255,255,255,0.7);
    }

    .pricing-popular .price-period {
        color: rgba(255,255,255,0.7);
    }

.check-icon {
    color: var(--accent);
}

.pricing-popular .check-icon {
    color: #a7f3d0;
}

/* TESTIMONIALS */
.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
}

[data-theme="dark"] .testimonial-card {
    background: var(--bg-card);
}

/* PAYMENT SECTION */
.payment-section {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.payment-badge {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* DASHBOARD MOCKUP */
.mockup-bg {
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.mockup-bar {
    background: var(--bg-card2);
    border-bottom: 1px solid var(--border);
}

.mockup-sidebar {
    background: var(--bg-card2);
    border-right: 1px solid var(--border);
}

.mockup-stat {
    background: var(--brand-light);
}

[data-theme="dark"] .mockup-stat {
    background: rgba(59,130,246,0.1);
}

/* FOOTER */
footer {
    background: var(--footer-bg);
}

/* CONTACT FORM */
.form-input {
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 12px 16px;
    width: 100%;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.9rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

    .form-input::placeholder {
        color: var(--text-muted);
    }

    .form-input:focus {
        border-color: var(--brand);
        box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
    }

.form-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
    display: block;
}

/* THEME TOGGLE */
.theme-toggle {
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: 100px;
    width: 56px;
    height: 28px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s;
}

.theme-knob {
    width: 20px;
    height: 20px;
    background: var(--brand);
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 4px;
    transition: all 0.3s;
}

[data-theme="dark"] .theme-knob {
    left: 32px;
    background: #f1c40f;
}

/* LOGO MARQUEE */
.marquee-track {
    display: flex;
    gap: 32px;
    animation: marquee 25s linear infinite;
}

/* NOTIFICATION CARD */
.notif {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

[data-theme="dark"] .notif {
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

/* ANIMATED GRADIENT BORDER */
.gradient-border {
    position: relative;
}

    .gradient-border::before {
        content: '';
        position: absolute;
        inset: -1px;
        border-radius: 21px;
        background: linear-gradient(135deg, #2563eb, #6366f1, #10b981);
        z-index: -1;
    }

.gradient-border-inner {
    background: var(--bg-card);
    border-radius: 20px;
    position: relative;
    z-index: 1;
}

/* GLOW RING */
.glow-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(59,130,246,0.2);
    animation: pulse-ring 4s ease-in-out infinite;
}

@keyframes pulse-ring {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }

    50% {
        opacity: 0.1;
        transform: scale(1.05);
    }
}

/* PROGRESS BAR */
.progress-bar {
    height: 4px;
    border-radius: 100px;
    background: var(--border);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 100px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
}

/* SCROLLBAR */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--brand);
    border-radius: 3px;
}

/* MOBILE MENU */
.mobile-menu {
    background: var(--bg-card);
    border: 1px solid var(--border);
}

/* INTERSECTION OBSERVER ANIMATIONS */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

    .reveal.visible {
        opacity: 1;
        transform: translateY(0);
    }

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}

.reveal-delay-5 {
    transition-delay: 0.5s;
}

/* SHIMMER EFFECT */
.shimmer-btn {
    background: linear-gradient(90deg, var(--brand) 0%, #6366f1 50%, var(--brand) 100%);
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
    color: #fff;
}

/* GRID PATTERN */
.grid-pattern {
    background-image: radial-gradient(circle, var(--text-muted) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.15;
}

/* NUMBER COUNTER */
.counter {
    font-family: 'Syne', sans-serif;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-mockup {
        display: none;
    }
}