/* Modern CSS Reset & Variables */
:root {
    --text-color: #e2e8f0;
    --bg-color: #050b1a;
    --primary-color: #135bec;
    --secondary-color: #6c757d;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    /* smooth momentum scrolling on iOS */
}

/* --- Mobile scroll performance --- */
html {
    scroll-behavior: smooth;
}

nav.seamless-nav {
    will-change: transform;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

#mobile-menu {
    will-change: opacity, transform;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

/* Reduce expensive blur on mobile for better scroll performance */
@media (max-width: 768px) {
    .backdrop-blur-3xl {
        -webkit-backdrop-filter: blur(12px) !important;
        backdrop-filter: blur(12px) !important;
    }

    .backdrop-blur-xl {
        -webkit-backdrop-filter: blur(8px) !important;
        backdrop-filter: blur(8px) !important;
    }

    .backdrop-blur-md {
        -webkit-backdrop-filter: blur(4px) !important;
        backdrop-filter: blur(4px) !important;
    }
}

/* ========== Cosmic Background ========== */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(30, 60, 180, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(60, 100, 220, 0.12) 0%, transparent 45%),
        radial-gradient(ellipse at 50% 80%, rgba(80, 60, 200, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 60%, rgba(40, 80, 200, 0.08) 0%, transparent 40%);
    pointer-events: none;
}

/* Star field layer */
.cosmic-stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    overflow: hidden;
}

.cosmic-stars::before,
.cosmic-stars::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background-image:
        radial-gradient(1px 1px at 10% 15%, rgba(255, 255, 255, 0.7), transparent),
        radial-gradient(1px 1px at 25% 35%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1.5px 1.5px at 40% 10%, rgba(200, 220, 255, 0.8), transparent),
        radial-gradient(1px 1px at 55% 45%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 70% 20%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1.5px 1.5px at 85% 55%, rgba(180, 200, 255, 0.7), transparent),
        radial-gradient(1px 1px at 15% 60%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 30% 75%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1.5px 1.5px at 50% 85%, rgba(200, 220, 255, 0.6), transparent),
        radial-gradient(1px 1px at 65% 70%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 80% 90%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 95% 30%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1px 1px at 5% 90%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1.5px 1.5px at 45% 55%, rgba(180, 200, 255, 0.5), transparent),
        radial-gradient(1px 1px at 75% 40%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 20% 50%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 60% 25%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1.5px 1.5px at 90% 70%, rgba(200, 220, 255, 0.6), transparent),
        radial-gradient(1px 1px at 35% 95%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 8% 40%, rgba(255, 255, 255, 0.5), transparent);
    background-size: 50% 50%;
    animation: drift-stars 120s linear infinite;
}

.cosmic-stars::after {
    background-image:
        radial-gradient(1px 1px at 12% 22%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1.5px 1.5px at 28% 48%, rgba(180, 200, 255, 0.7), transparent),
        radial-gradient(1px 1px at 42% 18%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 58% 62%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 72% 38%, rgba(200, 220, 255, 0.6), transparent),
        radial-gradient(1.5px 1.5px at 88% 72%, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 18% 82%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 33% 58%, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(1px 1px at 52% 92%, rgba(180, 200, 255, 0.4), transparent),
        radial-gradient(1.5px 1.5px at 68% 12%, rgba(255, 255, 255, 0.7), transparent),
        radial-gradient(1px 1px at 82% 52%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 95% 85%, rgba(200, 220, 255, 0.5), transparent);
    background-size: 60% 60%;
    animation: drift-stars 180s linear infinite reverse;
    opacity: 0.7;
}

@keyframes drift-stars {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(-25%, -25%);
    }
}

/* Subtle blue nebula pulse */
.cosmic-nebula {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(circle at 15% 30%, rgba(60, 100, 240, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 85% 70%, rgba(100, 60, 220, 0.05) 0%, transparent 35%);
    animation: nebula-pulse 8s ease-in-out infinite alternate;
}

@keyframes nebula-pulse {
    0% {
        opacity: 0.6;
    }

    100% {
        opacity: 1;
    }
}

/* ========== Royal-Blue Theme (pricing page) ========== */
body.bg-\[\#0b1839\]::before {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(55, 100, 235, 0.20) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(85, 140, 255, 0.18) 0%, transparent 45%),
        radial-gradient(ellipse at 50% 80%, rgba(110, 90, 250, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 60%, rgba(65, 120, 245, 0.12) 0%, transparent 40%);
}

body.bg-\[\#0b1839\] .cosmic-nebula {
    background:
        radial-gradient(circle at 15% 30%, rgba(90, 140, 255, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 70%, rgba(130, 90, 255, 0.09) 0%, transparent 35%);
}

/* Features page — slightly brighter nebula */
body.bg-\[\#081028\]::before {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(40, 75, 200, 0.18) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(70, 115, 240, 0.15) 0%, transparent 45%),
        radial-gradient(ellipse at 50% 80%, rgba(90, 70, 220, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 60%, rgba(50, 95, 220, 0.10) 0%, transparent 40%);
}

/* ========== Seamless Navigation ========== */
nav.seamless-nav {
    background: transparent !important;
    border-bottom: none !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.3s ease;
}

nav.seamless-nav.scrolled {
    background: rgba(5, 11, 26, 0.7) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
}

/* Layout placeholders */
header {
    padding: 1rem 2rem;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    text-align: center;
    padding: 2rem;
}

footer {
    text-align: center;
    padding: 2rem;
    margin-top: auto;
}

/* Glossy Button - Global */
.glossy-btn {
    background-color: #135bec;
    background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
    box-shadow: 0 4px 15px rgba(19, 91, 236, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: white !important;
}

.glossy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(19, 91, 236, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.5);
    background-color: #2563eb;
}