/* ============================================
   Integrated AI Systems — Design System
   ============================================ */

:root {
    --indigo: #6366f1;
    --violet: #8b5cf6;
    --cyan: #06b6d4;
    --emerald: #10b981;
    --bg: #050508;
}

/* ---- Base ---- */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', sans-serif;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #1e1b4b; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--indigo); }

/* ---- Selection ---- */
::selection { background: rgba(99, 102, 241, 0.3); color: white; }

/* ---- Focus ---- */
:focus-visible { outline: 2px solid rgba(99, 102, 241, 0.6); outline-offset: 2px; }

/* ============================================
   NAVIGATION
   ============================================ */
#navbar {
    border-bottom: 1px solid transparent;
    transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(5, 5, 8, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-color: rgba(255, 255, 255, 0.06);
}

.nav-cta {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #a5b4fc;
}

.nav-cta:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.5);
    color: white;
}

.mobile-menu-panel {
    background: rgba(5, 5, 8, 0.95);
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ============================================
   HERO
   ============================================ */
.hero-bg {
    background-color: var(--bg);
}

/* Animated gradient orbs */
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.18) 0%, transparent 70%);
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    animation: drift1 12s ease-in-out infinite alternate;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.14) 0%, transparent 70%);
    top: 30%;
    right: 5%;
    animation: drift2 15s ease-in-out infinite alternate;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.10) 0%, transparent 70%);
    bottom: 10%;
    left: 5%;
    animation: drift3 18s ease-in-out infinite alternate;
}

@keyframes drift1 {
    from { transform: translateX(-50%) translateY(0px); }
    to   { transform: translateX(-50%) translateY(40px); }
}
@keyframes drift2 {
    from { transform: translate(0, 0); }
    to   { transform: translate(-30px, 30px); }
}
@keyframes drift3 {
    from { transform: translate(0, 0); }
    to   { transform: translate(30px, -20px); }
}

/* Noise texture */
.noise-overlay {
    position: absolute;
    inset: 0;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-size: 200px;
    pointer-events: none;
}

/* Dot grid */
.dot-grid {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.06) 1px, transparent 0);
    background-size: 32px 32px;
    pointer-events: none;
}

/* Badge */
.badge {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.pulse-dot {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
    50% { box-shadow: 0 0 0 5px rgba(52, 211, 153, 0); }
}

/* Gradient text — animated shift */
.gradient-text-hero {
    background: linear-gradient(135deg, #818cf8 0%, #a78bfa 35%, #38bdf8 65%, #818cf8 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 6s ease infinite;
}

@keyframes gradient-flow {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* CTA Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--indigo), var(--violet));
    box-shadow: 0 0 24px rgba(99, 102, 241, 0.25);
    transition: all 0.2s ease;
}

.btn-primary:hover {
    box-shadow: 0 0 36px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.2s ease;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.12);
}

/* Stats bar */
.stats-bar {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(10px);
}

/* ============================================
   EYEBROW LABEL
   ============================================ */
.eyebrow {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #818cf8;
}

/* ============================================
   SOLUTIONS CARDS
   ============================================ */
.solution-card {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.07);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Shimmer sweep on hover */
.solution-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
        105deg,
        transparent 20%,
        rgba(255, 255, 255, 0.04) 50%,
        transparent 80%
    );
    transition: left 0.5s ease;
    pointer-events: none;
}

.solution-card:hover::after {
    left: 150%;
}

.solution-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-3px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* Card icons */
.card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.indigo-icon {
    background: rgba(99, 102, 241, 0.12);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.violet-icon {
    background: rgba(139, 92, 246, 0.12);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.cyan-icon {
    background: rgba(6, 182, 212, 0.12);
    color: #22d3ee;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* ============================================
   COMPLIANCE SECTION
   ============================================ */
.compliance-bg {
    background: linear-gradient(180deg, var(--bg) 0%, rgba(15, 10, 40, 0.5) 50%, var(--bg) 100%);
}

.compliance-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(16, 185, 129, 0.06);
    border: 1px solid rgba(16, 185, 129, 0.15);
    border-radius: 10px;
    transition: all 0.2s ease;
}

.compliance-chip:hover {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.25);
}

.compliance-card-glow {
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.1));
    border-radius: 18px;
    filter: blur(20px);
    z-index: -1;
}

.feature-panel {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.07);
}

.feature-row {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    transition: background 0.2s ease;
}

.feature-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.feature-icon-wrap {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon-wrap.emerald {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* ============================================
   PROCESS SECTION
   ============================================ */
.process-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding-bottom: 40px;
    position: relative;
}

.process-step.last {
    padding-bottom: 0;
}

.process-line {
    position: absolute;
    left: 20px;
    top: 44px;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.3) 0%, rgba(99, 102, 241, 0.05) 100%);
    transform-origin: top;
    transform: scaleY(0);
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.process-step.visible .process-line {
    transform: scaleY(1);
}

.process-step.last .process-line {
    display: none;
}

.process-num {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #818cf8;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    position: relative;
    z-index: 1;
    background-color: var(--bg);
}

.process-num.violet {
    background-color: var(--bg);
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.25);
    color: #a78bfa;
}

.process-num.cyan {
    background-color: var(--bg);
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.25);
    color: #22d3ee;
}

.process-num.emerald {
    background-color: var(--bg);
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.25);
    color: #34d399;
}

.process-content {
    flex: 1;
    padding-top: 8px;
}

.process-tag {
    font-size: 0.7rem;
    color: #4b5563;
    padding-top: 10px;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

/* ============================================
   CTA SECTION
   ============================================ */
.spotlight {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 65%);
    pointer-events: none;
}

.cta-input-wrap {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: border-color 0.2s ease;
}

.cta-input-wrap:focus-within {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.08);
}

.cta-input::placeholder {
    color: #374151;
}

/* ============================================
   FOOTER
   ============================================ */
.social-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.social-icon:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.social-icon:hover svg {
    color: #818cf8;
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in-section {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .fade-in-section {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .orb { animation: none; }
    .pulse-dot { animation: none; }
    .gradient-text-hero { animation: none; }
    .process-line { transform: scaleY(1); transition: none; }
    .solution-card::after { display: none; }
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   MOBILE
   ============================================ */
@media (max-width: 768px) {
    .process-step {
        gap: 14px;
    }

    a, button {
        min-height: 44px;
    }

    body {
        overflow-x: hidden;
    }
}

/* ============================================
   FIREFOX FALLBACKS
   ============================================ */
@supports not (backdrop-filter: blur(16px)) {
    #navbar.scrolled {
        background: rgba(5, 5, 8, 0.97);
    }
    .mobile-menu-panel {
        background: rgba(5, 5, 8, 0.99);
    }
}

/* ============================================
   FORM
   ============================================ */
button[type="submit"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}