/* ===================================
   ELVRA - Main Stylesheet
   Dark-only landing page styles
   =================================== */

:root {
    --bg-primary: #0F0F14;
    --bg-surface: #1A1A24;
    --bg-surface-hover: #22222E;
    --color-primary: #8B5CF6;
    --color-primary-hover: #7C3AED;
    --color-accent: #22D3EE;
    --text-primary: rgba(255,255,255,0.92);
    --text-secondary: #9CA3AF;
    --text-tertiary: #6B7280;
    --gradient-primary: linear-gradient(135deg,#8B5CF6 0%,#22D3EE 100%);
    --gradient-subtle: linear-gradient(135deg,rgba(139,92,246,0.1) 0%,rgba(34,211,238,0.1) 100%);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 40px rgba(139,92,246,0.3);
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --font-display: 'Satoshi',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
    --font-body: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
    --container-max: 1200px;
    --container-padding: 1.5rem;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.5rem,5vw,4rem); font-weight: 800; }
h2 { font-size: clamp(2rem,4vw,3rem); }
h3 { font-size: clamp(1.5rem,3vw,2rem); }
h4 { font-size: 1.25rem; }
p { color: var(--text-secondary); line-height: 1.7; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary-hover); }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }
.section { padding: var(--space-xl) 0; }
.section-header { text-align: center; margin-bottom: var(--space-lg); }
.section-header h2 { margin-bottom: var(--space-sm); }
.section-header p { font-size: 1.125rem; max-width: 600px; margin: 0 auto; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.875rem 2rem; font-family: var(--font-body); font-size: 1rem; font-weight: 600;
    border: none; border-radius: 12px; cursor: pointer;
    transition: all var(--transition-base); text-decoration: none; white-space: nowrap;
}
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: var(--shadow-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 60px rgba(139,92,246,0.5); }
.btn-secondary { background: var(--bg-surface); color: var(--text-primary); border: 1px solid rgba(255,255,255,0.1); }
.btn-secondary:hover { background: var(--bg-surface-hover); border-color: rgba(255,255,255,0.2); }

/* Navigation */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(15,15,20,0.8); backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05); transition: all var(--transition-base);
}
.nav-container { display: flex; align-items: center; justify-content: space-between; padding: 1rem var(--container-padding); max-width: var(--container-max); margin: 0 auto; }
.nav-logo { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-link { color: var(--text-secondary); font-weight: 500; transition: color var(--transition-fast); }
.nav-link:hover { color: var(--text-primary); }
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.lang-switch { display: flex; gap: 0.5rem; }
.lang-link { color: var(--text-tertiary); font-size: 0.875rem; padding: 0.25rem 0.5rem; border-radius: 4px; transition: all var(--transition-fast); }
.lang-link:hover,.lang-link.active { color: var(--text-primary); background: var(--bg-surface); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 80px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 800px; height: 800px; background: radial-gradient(circle,rgba(139,92,246,0.15) 0%,transparent 70%); pointer-events: none; }
.hero-container { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); align-items: center; }
.hero-content { position: relative; z-index: 2; }
.hero-title { margin-bottom: var(--space-md); background: linear-gradient(135deg,#fff 0%,rgba(255,255,255,0.8) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.25rem; margin-bottom: var(--space-md); color: var(--text-secondary); }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Portrait Card */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; perspective: 1000px; }
.portrait-card { width: 320px; height: 568px; background: var(--bg-surface); border-radius: 24px; position: relative; overflow: hidden; box-shadow: var(--shadow-lg); transform-style: preserve-3d; transition: transform var(--transition-slow); }
.portrait-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg,rgba(139,92,246,0.1) 0%,rgba(34,211,238,0.05) 100%); opacity: 0; transition: opacity var(--transition-slow); }
.portrait-card:hover::before { opacity: 1; }
.portrait-glow { position: absolute; inset: -2px; background: var(--gradient-primary); border-radius: 24px; opacity: 0.3; filter: blur(20px); animation: glow-pulse 4s ease-in-out infinite; }
@keyframes glow-pulse { 0%,100% { opacity: 0.3; } 50% { opacity: 0.5; } }
.portrait-content { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 2rem; }
.portrait-fragment { position: absolute; font-size: 0.875rem; color: var(--text-secondary); opacity: 0; transition: all var(--transition-slow); text-align: center; max-width: 80%; }
.portrait-fragment.visible { opacity: 0.6; }
.portrait-fragment.merged { opacity: 1; color: var(--text-primary); font-size: 1.125rem; font-weight: 500; }
.portrait-final { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 2rem; opacity: 0; transition: opacity var(--transition-slow); }
.portrait-final.visible { opacity: 1; }
.portrait-text { font-size: 1.25rem; font-weight: 600; text-align: center; line-height: 1.6; color: var(--text-primary); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-md); margin-top: var(--space-lg); }
.step { text-align: center; padding: var(--space-md); background: var(--bg-surface); border-radius: 16px; border: 1px solid rgba(255,255,255,0.05); transition: all var(--transition-base); }
.step:hover { transform: translateY(-4px); border-color: rgba(139,92,246,0.3); }
.step-number { display: inline-block; font-size: 3rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: var(--space-sm); }
.step-title { font-size: 1.5rem; margin-bottom: var(--space-xs); }
.step-description { color: var(--text-secondary); }

/* Story Card */
.story-card-section { background: var(--bg-surface); border-radius: 24px; padding: var(--space-xl); margin: var(--space-xl) 0; }
.story-card-preview { max-width: 400px; margin: var(--space-lg) auto 0; background: var(--bg-primary); border-radius: 16px; padding: 2rem; box-shadow: var(--shadow-lg); }
.story-card-text { font-size: 1.125rem; line-height: 1.8; color: var(--text-primary); }

/* Trust */
.trust-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); gap: var(--space-md); margin-top: var(--space-lg); }
.trust-item { padding: var(--space-md); background: var(--bg-surface); border-radius: 16px; border: 1px solid rgba(255,255,255,0.05); }
.trust-icon { width: 48px; height: 48px; background: var(--gradient-subtle); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-sm); font-size: 1.5rem; }
.trust-title { font-size: 1.25rem; margin-bottom: var(--space-xs); }

/* Waitlist */
.waitlist-section { text-align: center; background: var(--bg-surface); border-radius: 24px; padding: var(--space-xl); margin: var(--space-xl) 0; }
.waitlist-form { max-width: 500px; margin: var(--space-md) auto 0; display: flex; gap: 1rem; flex-wrap: wrap; }
.waitlist-input { flex: 1; min-width: 250px; padding: 0.875rem 1.5rem; background: var(--bg-primary); border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; color: var(--text-primary); font-family: var(--font-body); font-size: 1rem; transition: all var(--transition-fast); }
.waitlist-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(139,92,246,0.1); }
.waitlist-input::placeholder { color: var(--text-tertiary); }
.waitlist-message { margin-top: var(--space-sm); padding: 1rem; border-radius: 8px; display: none; width: 100%; }
.waitlist-message.success { background: rgba(34,197,94,0.1); color: #22C55E; display: block; }
.waitlist-message.error { background: rgba(239,68,68,0.1); color: #EF4444; display: block; }
.referral-hint { margin-top: var(--space-md); color: var(--text-secondary); font-size: 0.875rem; }

/* Footer */
.footer { background: var(--bg-surface); padding: var(--space-lg) 0 var(--space-md); margin-top: var(--space-xl); }
.footer-content { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-md); margin-bottom: var(--space-md); }
.footer-links { display: flex; gap: var(--space-md); list-style: none; }
.footer-link { color: var(--text-secondary); font-size: 0.875rem; }
.footer-link:hover { color: var(--text-primary); }
.footer-bottom { text-align: center; padding-top: var(--space-md); border-top: 1px solid rgba(255,255,255,0.05); color: var(--text-tertiary); font-size: 0.875rem; }

/* Invite Page */
.invite-hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: calc(80px + var(--space-xl)) var(--container-padding) var(--space-xl); }
.invite-content { max-width: 600px; margin: 0 auto; }
.invite-from { display: inline-block; padding: 0.5rem 1rem; background: var(--gradient-subtle); border-radius: 100px; font-size: 0.875rem; color: var(--color-accent); margin-bottom: var(--space-md); }
.invite-actions { display: flex; gap: 1rem; justify-content: center; margin-top: var(--space-md); flex-wrap: wrap; }

/* Legal Pages */
.legal-page { min-height: 100vh; padding: calc(80px + var(--space-xl)) 0 var(--space-xl); }
.legal-content { max-width: 800px; margin: 0 auto; padding: 0 var(--container-padding); }
.legal-content h1 { margin-bottom: var(--space-md); }
.legal-content h2 { font-size: 1.5rem; margin: var(--space-lg) 0 var(--space-sm); }
.legal-content p { margin-bottom: var(--space-sm); }
.legal-placeholder { background: var(--bg-surface); border: 1px solid rgba(139,92,246,0.3); border-radius: 12px; padding: var(--space-md); margin: var(--space-md) 0; }
.legal-placeholder p { color: var(--color-accent); margin: 0; }

/* Animations */
.fade-in { opacity: 0; transform: translateY(20px); transition: all var(--transition-slow); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 968px) {
    .hero-container { grid-template-columns: 1fr; gap: var(--space-md); }
    .hero-visual { order: -1; }
    .portrait-card { width: 280px; height: 498px; }
    .steps { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}
@media (max-width: 640px) {
    .section { padding: var(--space-lg) 0; }
    .hero { padding-top: 100px; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; }
    .waitlist-form { flex-direction: column; }
    .waitlist-input { min-width: 100%; }
    .footer-content { flex-direction: column; text-align: center; }
    .footer-links { flex-direction: column; gap: var(--space-sm); }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,*::before,*::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }