/* Custom variables for global design tokens */
:root {
    --color-bg-space: #03030d;
    --color-bg-card: rgba(10, 10, 25, 0.4);
    --color-border-card: rgba(255, 255, 255, 0.07);
    --color-text-primary: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #64748b;
    
    /* Tier glows */
    --color-tier1: #22d3ee;
    --color-tier1-glow: rgba(34, 211, 238, 0.2);
    --color-tier2: #c084fc;
    --color-tier2-glow: rgba(192, 132, 252, 0.2);
    --color-tier3: #fbbf24;
    --color-tier3-glow: rgba(251, 191, 36, 0.2);
    
    --color-primary-glow: #a78bfa;
    --font-heading: 'Cinzel', serif;
    --font-subheading: 'Outfit', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    
    --transition-smooth: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Reset and base styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-bg-space);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Background elements */
#bg-stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.stars-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background: radial-gradient(circle at 50% 50%, rgba(13, 12, 35, 0) 0%, rgba(3, 3, 13, 0.8) 80%);
    pointer-events: none;
}

.nebula-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.6;
    mix-blend-mode: screen;
    pointer-events: none;
    background: 
        radial-gradient(circle at 20% 30%, rgba(167, 139, 250, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(34, 211, 238, 0.08) 0%, transparent 40%);
    animation: nebulaDrift 20s ease-in-out infinite alternate;
}

@keyframes nebulaDrift {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.1) translate(2%, 2%); }
}

/* Container */
.container {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem 2rem 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 5rem;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1.2s forwards;
}

.logo {
    margin-bottom: 1.5rem;
}

.glowing-logo {
    filter: drop-shadow(0 0 10px rgba(167, 139, 250, 0.5));
    animation: floatLogo 6s ease-in-out infinite;
}

@keyframes floatLogo {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-5px) rotate(5deg); }
}

.title {
    font-family: var(--font-heading);
    font-size: 2.1rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    line-height: 1.4;
    text-transform: uppercase;
    margin: 0 auto 1.5rem auto;
    max-width: 900px;
    background: linear-gradient(to bottom, #ffffff 40%, rgba(255, 255, 255, 0.6) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 10px rgba(255, 255, 255, 0.1));
}

.subtitle {
    font-family: var(--font-subheading);
    font-weight: 300;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.8;
    letter-spacing: 0.05em;
    opacity: 0.85;
}

/* Vitrine Layout (Cards) */
.vitrine-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-bottom: 5rem;
    align-items: start;
}

.tier-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-card);
    border-radius: 20px;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    opacity: 0;
    transform: translateY(30px);
}

.tier-card:nth-child(1) { animation: fadeInUp 0.8s 0.2s forwards; }
.tier-card:nth-child(2) { animation: fadeInUp 0.8s 0.4s forwards; }
.tier-card:nth-child(3) { animation: fadeInUp 0.8s 0.6s forwards; }

.tier-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent 50%, rgba(255, 255, 255, 0.02));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.tier-card:hover {
    transform: translateY(-8px);
    background: rgba(15, 15, 35, 0.6);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Tier specific hover glows */
#tier-1:hover { box-shadow: 0 10px 30px var(--color-tier1-glow); }
#tier-2:hover { box-shadow: 0 10px 30px var(--color-tier2-glow); }
#tier-3:hover { box-shadow: 0 10px 30px var(--color-tier3-glow); }

/* Crystal Viewport for Three.js */
.crystal-viewport {
    width: 100%;
    height: 240px;
    position: relative;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

/* Card Metadata */
.card-meta {
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.tier-badge {
    display: inline-block;
    font-family: var(--font-subheading);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.tier-title {
    font-family: var(--font-subheading);
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
    transition: var(--transition-smooth);
}

.tier-short {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 300;
    font-style: italic;
    opacity: 0.8;
}

.glow-indicator {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0.2);
    width: 60px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    opacity: 0;
    transition: var(--transition-smooth);
}

#tier-1 .glow-indicator { background: var(--color-tier1); }
#tier-2 .glow-indicator { background: var(--color-tier2); }
#tier-3 .glow-indicator { background: var(--color-tier3); }

.tier-card.selected .glow-indicator {
    transform: translateX(-50%) scaleX(1);
    opacity: 0.8;
    box-shadow: 0 0 8px currentColor;
}

#tier-1.selected .tier-title { color: var(--color-tier1); text-shadow: 0 0 10px var(--color-tier1-glow); }
#tier-2.selected .tier-title { color: var(--color-tier2); text-shadow: 0 0 10px var(--color-tier2-glow); }
#tier-3.selected .tier-title { color: var(--color-tier3); text-shadow: 0 0 10px var(--color-tier3-glow); }

/* Accordion Smooth Expand Content */
.tier-details-wrapper {
    display: grid;
    grid-template-rows: 0fr;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.tier-details-wrapper.open {
    grid-template-rows: 1fr;
}

.tier-details {
    min-height: 0;
    transition: opacity 0.5s ease;
    opacity: 0;
}

.tier-details-wrapper.open .tier-details {
    opacity: 1;
    padding-top: 1.5rem;
}

.storytelling-desc {
    font-size: 0.9rem;
    line-height: 1.8;
    font-weight: 300;
    color: var(--color-text-secondary);
    text-align: justify;
    margin-bottom: 1.5rem;
    position: relative;
    padding: 0 0.5rem;
}

/* Subtle accent line on description */
.storytelling-desc::before {
    content: '“';
    position: absolute;
    left: -0.5rem;
    top: -0.5rem;
    font-size: 2rem;
    font-family: var(--font-heading);
    color: rgba(255, 255, 255, 0.15);
}

.perks-section {
    margin-bottom: 1.5rem;
    text-align: left;
}

.perks-section h3, .emojis-section h3 {
    font-family: var(--font-subheading);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0.8rem;
    font-weight: 400;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.4rem;
}

.perks-list {
    list-style: none;
}

.perks-list li {
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--color-text-secondary);
    margin-bottom: 0.6rem;
    padding-left: 1.2rem;
    position: relative;
    line-height: 1.5;
}

.perks-list li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--color-primary-glow);
    font-size: 0.7rem;
    top: 0.1rem;
}

#tier-1 .perks-list li::before { color: var(--color-tier1); }
#tier-2 .perks-list li::before { color: var(--color-tier2); }
#tier-3 .perks-list li::before { color: var(--color-tier3); }

/* Custom SVGs for Emojis */
.emojis-section {
    text-align: left;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
    margin-top: 0.5rem;
}

.emoji-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 0.8rem 0.4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.custom-emoji {
    width: 28px;
    height: 28px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.4rem;
    transition: var(--transition-smooth);
    filter: drop-shadow(0 0 2px rgba(255,255,255,0.1));
}

.emoji-item span {
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--color-text-muted);
    text-align: center;
    letter-spacing: 0.05em;
}

.emoji-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

#tier-1 .emoji-item:hover .custom-emoji {
    color: var(--color-tier1);
    filter: drop-shadow(0 0 6px var(--color-tier1));
    transform: scale(1.1) rotate(5deg);
}

#tier-2 .emoji-item:hover .custom-emoji {
    color: var(--color-tier2);
    filter: drop-shadow(0 0 6px var(--color-tier2));
    transform: scale(1.1) rotate(5deg);
}

#tier-3 .emoji-item:hover .custom-emoji {
    color: var(--color-tier3);
    filter: drop-shadow(0 0 6px var(--color-tier3));
    transform: scale(1.1) rotate(5deg);
}

/* CTA Section */
.cta-section {
    text-align: center;
    margin: 3rem 0;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s 0.8s forwards;
}

.cta-button {
    display: inline-block;
    position: relative;
    padding: 1.2rem 3.5rem;
    border-radius: 40px;
    color: #fff;
    text-decoration: none;
    font-family: var(--font-subheading);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-smooth);
    overflow: hidden;
    cursor: pointer;
}

.cta-button span {
    position: relative;
    z-index: 2;
}

.button-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.4) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
    z-index: 1;
}

.cta-button:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.6);
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
}

.cta-button:hover .button-glow {
    opacity: 1;
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.cta-hint {
    margin-top: 1.2rem;
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

/* Footer styling */
.footer {
    text-align: center;
    padding: 2.5rem 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    z-index: 10;
    position: relative;
}

.footer p {
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* Shared Keyframe Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Overrides */
@media (max-width: 1024px) {
    .vitrine-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    /* Make third tier card full width if odd one out */
    .tier-card:nth-child(3) {
        grid-column: span 2;
        max-width: 580px;
        margin: 0 auto;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 3rem 1.5rem 1.5rem 1.5rem;
    }
    
    .title {
        font-size: 1.6rem;
        letter-spacing: 0.08em;
    }
    
    .subtitle {
        font-size: 0.95rem;
    }
    
    .vitrine-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .tier-card:nth-child(3) {
        grid-column: span 1;
    }
    
    .crystal-viewport {
        height: 200px;
    }
    
    .cta-button {
        padding: 1.1rem 2.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.25rem;
        letter-spacing: 0.05em;
    }
    
    .tier-title {
        font-size: 1.3rem;
    }
    
    .emoji-grid {
        gap: 0.5rem;
    }
}