/* Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: var(--leading-relaxed);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography Utility Classes */
.text-display {
    font-family: 'Montserrat', var(--font-display), sans-serif;
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 300;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tighter);
}

.text-h1 {
    font-family: 'Montserrat', var(--font-display), sans-serif;
    font-size: var(--text-4xl);
    font-weight: 400;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
}

.text-h2 {
    font-family: 'Montserrat', var(--font-display), sans-serif;
    font-size: var(--text-3xl);
    font-weight: 500;
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
}

.text-h3 {
    font-family: 'Montserrat', var(--font-display), sans-serif;
    font-size: var(--text-xl);
    font-weight: 500;
    line-height: var(--leading-snug);
}

.text-body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.text-body-lg {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.text-sm {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    color: var(--text-muted);
}

.text-label {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--text-muted);
}

.text-mono {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--teal-300), var(--blue-400), var(--purple-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Background Utilities */
.bg-grid {
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 60px 60px;
}

.bg-ambient {
    background:
        radial-gradient(ellipse 100% 80% at 0% 0%, rgba(20, 184, 166, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 80% 60% at 100% 100%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 50% 50%, rgba(167, 139, 250, 0.03) 0%, transparent 50%);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Accessibility */
:focus-visible {
    outline: 2px solid var(--teal-500);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    /* Hide particle containers when reduced motion is preferred */
    .landing-particles,
    #preview-particles {
        display: none !important;
    }
}

/* ============================================
   MOBILE PERFORMANCE OPTIMIZATIONS
   Reduces GPU-intensive effects on mobile
   ============================================ */

@media (max-width: 768px) {
    /* Disable backdrop-filter on mobile for performance */
    .header,
    .card,
    .glass,
    .glass-elevated,
    .module-card,
    .landing-badge,
    .glass-card {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    /* Use solid semi-transparent backgrounds instead */
    .header {
        background: rgba(0, 0, 0, 0.95) !important;
    }

    .card,
    .glass,
    .glass-elevated,
    .module-card,
    .glass-card {
        background: rgba(10, 15, 20, 0.95) !important;
    }

    /* Pause infinite spinning animations on mobile */
    .shiny-selected,
    .btn--shiny,
    .badge-card.badge-shiny::before,
    .journey-phase-number {
        animation-play-state: paused !important;
    }

    /* Simplify orb blur effects */
    .landing-orb {
        filter: blur(60px) !important;
        opacity: 0.3 !important;
    }

    /* Hide cursor glow on mobile */
    .landing-cursor-glow {
        display: none !important;
    }
}