/* ═══════════════════════════════════════════════
   SHIVA MARKETING — Premium Light Theme
   ═══════════════════════════════════════════════ */

:root {
    --bg-base: #ffffff;
    --bg-surface: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent-steel: #2563eb;
    --accent-indigo: #6366f1;
    --accent-purple: #7c3aed;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
}

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

body {
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── Grid Background ── */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -2;
    pointer-events: none;
}

.glow-sphere {
    position: fixed;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.04) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(80px);
    pointer-events: none;
}

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.2rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s;
}

.site-header.scrolled {
    padding: 0.8rem 5%;
    box-shadow: var(--shadow-sm);
}

.logo {
    font-weight: 900;
    font-size: 1.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    background: linear-gradient(135deg, var(--accent-steel), var(--accent-indigo));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-icon {
    font-size: 1.3rem;
    margin-right: 0.4rem;
    -webkit-text-fill-color: initial;
}

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

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

.header-nav a:hover {
    color: var(--accent-steel);
}

.header-nav .btn-vroom,
.btn-vroom {
    padding: 0.6rem 1.4rem;
    background: linear-gradient(135deg, var(--accent-steel), var(--accent-indigo));
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    letter-spacing: 0.3px;
}

.header-nav .btn-vroom:hover,
.btn-vroom:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
    color: #fff;
}

/* ── Container ── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

/* ── Hero ── */
.hero {
    padding: 8rem 5% 6rem;
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: rgba(37, 99, 235, 0.06);
    color: var(--accent-steel);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(37, 99, 235, 0.12);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--accent-steel), var(--accent-indigo), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-weight: 300;
    line-height: 1.7;
}

.hero-subtitle strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-contact {
    padding: 1rem 2.5rem;
    background: var(--text-primary);
    color: #fff;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-discover {
    padding: 1rem 2.5rem;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-discover:hover {
    background: var(--bg-surface);
    border-color: var(--accent-steel);
    color: var(--accent-steel);
}

/* ── Architecture Vizualizer ── */
.arch-section {
    padding: 6rem 0;
}

.section-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(99, 102, 241, 0.06);
    color: var(--accent-indigo);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.15;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    font-weight: 300;
    line-height: 1.6;
}

.arch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

/* ── Shimmer Keyframes ── */
@keyframes archShimmer {
    0% {
        left: -100%;
    }

    100% {
        left: 200%;
    }
}

@keyframes iconFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-3px);
    }
}

.arch-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem 2rem 1.4rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.04);
    display: flex;
    flex-direction: column;
}

/* ── Top gradient bar — always subtly visible ── */
.arch-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-steel), var(--accent-indigo), var(--accent-purple));
    opacity: 0.4;
    transition: opacity 0.4s, height 0.4s;
}

/* ── Shimmer sweep overlay ── */
.arch-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(105deg,
            transparent 40%,
            rgba(255, 255, 255, 0.08) 45%,
            rgba(255, 255, 255, 0.15) 50%,
            rgba(255, 255, 255, 0.08) 55%,
            transparent 60%);
    pointer-events: none;
    transition: none;
}

.arch-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 8px 30px rgba(37, 99, 235, 0.12),
        0 2px 8px rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
}

.arch-card:hover::before {
    opacity: 1;
    height: 4px;
}

.arch-card:hover::after {
    animation: archShimmer 0.8s ease-in-out;
}

/* ── Icon — gradient glow background ── */
.arch-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(99, 102, 241, 0.08));
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
    position: relative;
    transition: all 0.4s;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.06);
}

.arch-card:hover .arch-icon {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(124, 58, 237, 0.12));
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.15);
    animation: iconFloat 2s ease-in-out infinite;
}

.arch-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.arch-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
}

/* ── Card Footer — CTA buttons ── */
.arch-card-footer {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 1.2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--glass-border);
}

.arch-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem 1.1rem;
    background: linear-gradient(135deg, var(--accent-steel), var(--accent-indigo));
    color: #fff;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    white-space: nowrap;
    letter-spacing: 0.2px;
}

.arch-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
    color: #fff;
}

.arch-cta.cta-ai {
    background: linear-gradient(135deg, var(--accent-purple), #d946ef);
}

.arch-cta.cta-ai:hover {
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
}

.arch-cta-secondary {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    margin-left: auto;
    white-space: nowrap;
}

.arch-cta-secondary:hover {
    color: var(--accent-steel);
}

/* ── Guarantees ── */
.guarantees-section {
    padding: 6rem 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.guarantees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.guarantee-card {
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
}

.guarantee-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(34, 197, 94, 0.08);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    color: #16a34a;
}

.guarantee-card h4 {
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
    font-weight: 700;
}

.guarantee-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.guarantee-footnote {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.4;
}

/* ── Heritage / References ── */
.heritage-section {
    padding: 6rem 0;
    text-align: center;
}

.heritage-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 3rem;
}

.heritage-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding: 1.5rem 2.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all 0.3s;
    min-width: 140px;
}

.heritage-item:hover {
    border-color: rgba(37, 99, 235, 0.15);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.heritage-icon {
    font-size: 2rem;
}

.heritage-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.heritage-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.heritage-roadmap {
    display: inline-block;
    margin-top: 0.8rem;
    padding: 0.35rem 1rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent-steel);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 50px;
    text-decoration: none;
    letter-spacing: 0.3px;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.heritage-roadmap:hover {
    background: linear-gradient(135deg, var(--accent-steel), var(--accent-indigo));
    color: #fff;
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

/* ── Contact Section ── */
.contact-section {
    padding: 6rem 0 8rem;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.contact-info p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.contact-perks {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-perk {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.contact-perk-icon {
    width: 32px;
    height: 32px;
    background: rgba(37, 99, 235, 0.06);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-form {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: #fff;
    transition: all 0.2s;
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-steel);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-submit {
    width: 100%;
    padding: 1rem;
    background: var(--text-primary);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 0.5rem;
}

.form-submit:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.form-success {
    display: none;
    text-align: center;
    padding: 3rem 1rem;
}

.form-success .success-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.form-success h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.form-success p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ── Ecosystem Bar ── */
.ecosystem-section {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
}

.ecosystem-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
}

.eco-link {
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: all 0.2s;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.eco-link:hover {
    border-color: var(--accent-steel);
    color: var(--accent-steel);
    background: rgba(37, 99, 235, 0.03);
    transform: translateY(-2px);
}

.eco-icon {
    font-size: 1.1rem;
}

/* ── Footer ── */
.site-footer {
    text-align: center;
    padding: 3rem 5%;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.site-footer a {
    color: var(--accent-steel);
    text-decoration: none;
}

/* ── Animations ── */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    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;
}

/* ── Scroll-to-Top ── */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--text-primary);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .hero {
        padding: 5rem 5% 3rem;
    }

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .header-nav {
        display: none;
    }

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