/* Main Styles - ProveX Landing Page */

/* ============================================
   BASE STYLES
   ============================================ */

body {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    overflow-x: hidden;
}

/* ============================================
   AURORA BACKGROUND - Northern Lights Effect
   Beautiful smooth version - no edges
   ============================================ */

.aurora-bg {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
    filter: blur(100px); /* Increased for smoother, no edges */
    background:
            radial-gradient(circle 800px at 25% 25%, rgba(255, 145, 77, 0.7) 0%, transparent 60%),
            radial-gradient(circle 650px at 50% 85%, rgba(255, 145, 77, 0.5) 0%, transparent 60%),
            radial-gradient(circle 700px at 75% 60%, rgba(236, 72, 153, 0.6) 0%, transparent 60%),
            radial-gradient(circle 650px at 80% 30%, rgba(59, 130, 246, 0.4) 0%, transparent 60%);
    animation: aurora-flow 16s ease-in-out infinite; /* Faster: 20s → 16s */
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

@keyframes aurora-flow {
    0% {
        transform: translate3d(0%, 0%, 0) scale(1) rotate(0deg);
    }
    25% {
        transform: translate3d(5%, -3%, 0) scale(1.1) rotate(2deg);
    }
    50% {
        transform: translate3d(-3%, 4%, 0) scale(1.05) rotate(-1deg);
    }
    75% {
        transform: translate3d(-4%, -2%, 0) scale(1.08) rotate(1deg);
    }
    100% {
        transform: translate3d(0%, 0%, 0) scale(1) rotate(0deg);
    }
}

/* Floating purple blob - moves horizontally when others are still */
.aurora-purple-float {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
    filter: blur(100px);
    background: radial-gradient(circle 750px at 38% 45%, rgba(139, 92, 246, 0.6) 0%, transparent 60%);
    animation: purple-float 12s ease-in-out infinite;
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

@keyframes purple-float {
    0%, 100% {
        transform: translate3d(0%, 0%, 0) scale(1);
    }
    25% {
        transform: translate3d(-8%, 0%, 0) scale(1.05);
    }
    50% {
        transform: translate3d(8%, 0%, 0) scale(1.1);
    }
    75% {
        transform: translate3d(-4%, 0%, 0) scale(1.05);
    }
}

/* ============================================
   LAYOUT CONTAINERS
   ============================================ */

main {
    position: relative;
    z-index: var(--z-base);
}

.container {
    width: 100%;
    max-width: var(--container-lg);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-nav);
    transition: background var(--transition-base);
}

.nav-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: opacity var(--transition-fast);
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

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

.logo-image {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary,
.btn-hero {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent-primary);
    color: var(--color-text-primary);
    box-shadow: var(--glow-blue);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    box-shadow: var(--glow-purple);
    transform: translateY(-2px);
}

.btn-hero {
    background: var(--color-accent-primary);
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    padding: var(--space-md) var(--space-2xl);
    box-shadow: var(--shadow-lg), var(--glow-blue);
}

.btn-hero:hover {
    background: var(--color-accent-hover);
    box-shadow: var(--shadow-xl), var(--glow-purple);
    transform: translateY(-3px);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-3xl);
}

.hero-logo {
    width: 180px;
    height: 180px;
    margin: 0 auto var(--space-xl);
    filter: drop-shadow(0 10px 30px rgba(59, 130, 246, 0.3));
    /* Animation removed - logo should be static */
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-md);
    /* Static gradient - no animation */
    background: linear-gradient(
            135deg,
            var(--color-aurora-blue) 0%,
            #5b72f7 33%,
            var(--color-aurora-purple) 66%,
            var(--color-aurora-pink) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    -moz-background-clip: text;
    -moz-text-fill-color: transparent;
    background-clip: text;
    color: transparent; /* Fallback for Firefox */
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2xl);
}

/* ============================================
   SECTIONS
   ============================================ */

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-alt {
    background: var(--color-bg-elevated);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-md);
    text-align: center;
}

.content-block {
    max-width: var(--container-md);
    margin: 0 auto;
}

.content-block p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: var(--line-height-relaxed);
}

.content-block p:last-child {
    margin-bottom: 0;
}

.highlight {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

/* Purple highlight for special statements */
.highlight-purple {
    color: var(--color-aurora-purple) !important;
    font-weight: var(--font-weight-semibold);
}

/* Purple subtitle under section titles */
.section-subtitle-purple {
    color: var(--color-aurora-purple) !important;
    font-size: var(--font-size-xl);
    text-align: center;
    margin-bottom: var(--space-lg);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   FEATURES GRID
   ============================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.feature-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-aurora-blue);
    box-shadow: var(--glow-blue);
    transform: translateY(-5px);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
    color: var(--color-aurora-purple); /* Purple headers */
}

.feature-card p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

/* ============================================
   TIMELINE / USE CASES
   ============================================ */

.timeline {
    max-width: var(--container-md);
    margin: var(--space-2xl) auto 0;
}

.timeline-section {
    margin-bottom: var(--space-3xl);
}

.timeline-section:last-child {
    margin-bottom: 0;
}

.timeline-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-lg);
    color: var(--color-aurora-purple);
}

.use-case-list {
    list-style: none;
    padding-left: 0;
}

.use-case-list li {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
    position: relative;
}

.use-case-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-aurora-blue);
    font-weight: var(--font-weight-bold);
}

.use-case-list li strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   CTA SECTION
   ============================================ */

.section-cta {
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
}

.section-cta .content-block {
    max-width: var(--container-md);
}

.disclaimer {
    max-width: var(--container-md);
    margin: var(--space-2xl) auto 0;
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
}

.disclaimer p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
    margin: 0;
    margin-bottom: var(--space-sm);
}

.disclaimer p:last-child {
    margin-bottom: 0;
}

.disclaimer-emphasis {
    font-size: var(--font-size-lg) !important; /* Bigger font */
    color: var(--color-text-secondary) !important; /* Lighter color for emphasis */
    font-weight: var(--font-weight-semibold) !important; /* Bold */
    margin-top: var(--space-md) !important; /* Extra spacing */
}

.disclaimer-emphasis-more {
    font-size: var(--font-size-2xl) !important; /* Even Bigger font */
    color: var(--color-text-secondary) !important; /* Lighter color for emphasis */
    font-weight: var(--font-weight-semibold) !important; /* Bold */
    margin-top: 0 !important; /* Extra spacing */
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0;
    text-align: center;
}

.footer p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
}

.footer p:last-child {
    margin-bottom: 0;
}

.footer-note {
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

.footer-credits {
    margin-top: var(--space-sm);
    font-size: var(--font-size-xs);
}

.footer-credits a {
    color: var(--color-aurora-blue);
    transition: color var(--transition-fast);
}

.footer-credits a:hover {
    color: var(--color-aurora-purple);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }

    .nav-container {
        padding: var(--space-md);
    }

    .nav-menu {
        display: none; /* Hide menu on mobile */
    }

    .logo-text {
        display: none;
    }

    .hero {
        padding-top: var(--space-3xl);
        min-height: 90vh;
    }

    .hero-logo {
        width: 240px;  /* Doubled from 120px */
        height: 240px; /* Doubled from 120px */
        margin-top: var(--space-2xl); /* Add space from nav */
        margin-bottom: var(--space-xl); /* Add space to title */
    }

    .section {
        padding: var(--space-3xl) 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .btn-hero {
        padding: var(--space-md) var(--space-xl);
        font-size: var(--font-size-base);
    }

    /* Mobile aurora optimization - less blur, more visible */
    .aurora-bg {
        filter: blur(60px); /* Reduced from 100px */
        opacity: 0.4; /* Slightly dimmed */
    }

    .aurora-purple-float {
        filter: blur(60px); /* Reduced from 100px */
        opacity: 0.4;
        animation-duration: 15s; /* Slower on mobile */
    }
}

@media (max-width: 480px) {
    .hero-logo {
        width: 180px;  /* Increased from 100px for better visibility */
        height: 180px; /* Increased from 100px for better visibility */
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .content-block p {
        font-size: var(--font-size-base);
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* ANIMATIONS FORCED FOR ALL BROWSERS/OS
   prefers-reduced-motion is DISABLED to ensure aurora animations
   work on all systems (Windows, Mac, etc) regardless of OS settings.
   This ensures consistent visual experience across all platforms.
*/
/*
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .aurora-bg,
    .aurora-purple-float {
        animation: none;
    }
}
*/

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-aurora-blue);
    outline-offset: 4px;
}

/* Print styles */
@media print {
    .aurora-bg,
    .nav {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}