/* ============================================================
   CSS VARIABLES — Dark Dungeon Theme
   ============================================================ */
:root {
    --bg-primary:      #0f1220;
    --bg-secondary:    #13172a;
    --bg-panel:        #1a1f35;
    --bg-panel-alt:    #1e2438;
    --border-subtle:   rgba(255, 255, 255, 0.07);
    --border-gold:     rgba(242, 193, 78, 0.22);
    --accent-gold:     #f2c14e;
    --accent-gold-dim: rgba(242, 193, 78, 0.12);
    --accent-blue:     #4c7dff;
    --text-primary:    #eef0ff;
    --text-secondary:  rgba(220, 225, 255, 0.6);

    --card-baby:       #ffb3c6;
    --card-basic:      #ffd966;
    --card-magic-c:    #4c7dff;
    --card-magic-s:    #ff9d6e;
    --card-upgrade:    #6be36b;
    --card-downgrade:  #fd3333;
    --card-instant:    #b38aff;
}

/* ============================================================
   BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    background-image:
        radial-gradient(ellipse at 20% 0%,   rgba(76, 125, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(242, 193, 78, 0.05) 0%, transparent 50%);
}

p { color: var(--text-secondary); }

h2 {
    font-family: 'Cinzel', serif;
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    height: 65px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    background: rgba(10, 13, 28, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-gold);
    box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.navbar-brand {
    font-family: 'Cinzel', serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-gold);
    text-decoration: none;
    letter-spacing: 1px;
    text-shadow: 0 0 20px rgba(242, 193, 78, 0.4);
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.navbar-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}

.navbar-links a:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.06);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1.4rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s, transform 0.15s;
}

.btn:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-primary {
    background: linear-gradient(135deg, #3a5fd9, #2a4ab8);
    color: #fff;
    box-shadow: 0 4px 18px rgba(58, 95, 217, 0.4);
    border: 1px solid rgba(100, 140, 255, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--accent-gold);
    border: 1px solid var(--border-gold);
}

.btn-outline:hover { background: var(--accent-gold-dim); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1.5rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 40%, rgba(242, 193, 78, 0.1) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 80%, rgba(76, 125, 255, 0.07) 0%, transparent 45%),
        radial-gradient(ellipse at 80% 15%, rgba(179, 138, 255, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

/* Subtle grid lines for depth */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 72%);
}

.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 1;
    animation: heroFadeIn 0.9s ease both;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(22px); }
    to   { opacity: 1; transform: translateY(0); }
}

.card-strip {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
    animation: heroFadeIn 0.9s 0.1s ease both;
}

.card-pip {
    width: 10px; height: 10px;
    border-radius: 50%;
    opacity: 0.8;
    transition: transform 0.2s, opacity 0.2s;
}

.card-pip:hover { transform: scale(1.5); opacity: 1; }

.hero-subtitle {
    font-family: 'Cinzel', serif;
    font-size: clamp(0.75rem, 2vw, 0.9rem);
    color: var(--accent-gold);
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 1rem;
    animation: heroFadeIn 0.9s 0.15s ease both;
}

.hero h1 {
    font-family: 'Cinzel', serif;
    font-size: clamp(3rem, 9vw, 5.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.05;
    letter-spacing: -1px;
    text-shadow:
        0 0 50px rgba(242, 193, 78, 0.22),
        0 2px 6px rgba(0,0,0,0.5);
    animation: heroFadeIn 0.9s 0.2s ease both;
}

/* Gold rule under title */
.hero h1::after {
    content: '';
    display: block;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    margin: 0.7rem auto 0;
    border-radius: 2px;
}

.hero-tagline {
    font-size: clamp(0.9rem, 2vw, 1.05rem);
    color: var(--text-secondary);
    margin: 0 auto 2.5rem;
    max-width: 500px;
    animation: heroFadeIn 0.9s 0.3s ease both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: heroFadeIn 0.9s 0.4s ease both;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
    padding: 6rem 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.features-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.features-header::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    margin: 1.25rem auto 0;
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}

.feature-card {
    background: linear-gradient(145deg, var(--bg-panel-alt), var(--bg-panel));
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 2rem 1.75rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

/* Gold top shimmer line on hover */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    opacity: 0;
    transition: opacity 0.25s;
}

.feature-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-5px);
    box-shadow: 0 18px 40px rgba(0,0,0,0.45), 0 0 0 1px var(--border-gold);
}

.feature-card:hover::before { opacity: 1; }

.feature-icon {
    font-size: 2.1rem;
    margin-bottom: 1.1rem;
    display: block;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-card p { font-size: 0.9rem; line-height: 1.65; }

/* ============================================================
   HOW TO PLAY
   ============================================================ */
.how-to-play {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    padding: 6rem 1.5rem;
    position: relative;
    overflow: hidden;
}

.how-to-play::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 10% 50%, rgba(76, 125, 255, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 50%, rgba(242, 193, 78, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.how-to-play-inner {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    text-align: center;
}

.how-to-play h2 { margin-bottom: 1rem; }

.how-to-play-inner > p {
    max-width: 650px;
    margin: 0 auto 3.5rem;
    font-size: 1rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1.5rem;
}

.step {
    text-align: center;
    padding: 1.75rem 1.25rem;
    background: linear-gradient(145deg, var(--bg-panel-alt), var(--bg-panel));
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    transition: border-color 0.2s, transform 0.2s;
}

.step:hover {
    border-color: var(--border-gold);
    transform: translateY(-3px);
}

.step-number {
    width: 52px; height: 52px;
    border-radius: 50%;
    background: rgba(242, 193, 78, 0.1);
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    font-family: 'Cinzel', serif;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: 0 0 16px rgba(242, 193, 78, 0.12);
    transition: box-shadow 0.2s, background 0.2s;
}

.step:hover .step-number {
    background: rgba(242, 193, 78, 0.18);
    box-shadow: 0 0 26px rgba(242, 193, 78, 0.28);
}

.step h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.step p { font-size: 0.87rem; }

/* ============================================================
   CARD TYPES — TRAVELATOR
   ============================================================ */
.card-types {
    padding: 6rem 0;
    overflow: hidden;
}

.card-types > h2 {
    text-align: center;
    margin-bottom: 3rem;
    padding: 0 1.5rem;
}

.travelator-wrapper {
    position: relative;
    overflow: hidden;
}

/* Fade edges */
.travelator-wrapper::before,
.travelator-wrapper::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.travelator-wrapper::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-primary), transparent);
}

.travelator-wrapper::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-primary), transparent);
}

.travelator-track {
    display: flex;
    gap: 1rem;
    width: max-content;
    padding: 0.5rem 0.5rem 1rem;
    animation: travelator 30s linear infinite;
}

.travelator-track:hover { animation-play-state: paused; }

@keyframes travelator {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

.card-type-item {
    background: linear-gradient(145deg, var(--bg-panel-alt), var(--bg-panel));
    border: 1px solid var(--border-subtle);
    border-left: 3px solid transparent;
    border-radius: 12px;
    padding: 1.4rem 1.2rem;
    text-align: center;
    width: 170px;
    flex-shrink: 0;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.card-type-item:hover { transform: translateY(-4px); }

.card-type-item.baby      { border-left-color: var(--card-baby); }
.card-type-item.basic     { border-left-color: var(--card-basic); }
.card-type-item.magic-c   { border-left-color: var(--card-magic-c); }
.card-type-item.magic-s   { border-left-color: var(--card-magic-s); }
.card-type-item.upgrade   { border-left-color: var(--card-upgrade); }
.card-type-item.downgrade { border-left-color: var(--card-downgrade); }
.card-type-item.instant   { border-left-color: var(--card-instant); }

.card-type-item.baby:hover      { box-shadow: 0 12px 30px rgba(255,179,198,0.15); }
.card-type-item.basic:hover     { box-shadow: 0 12px 30px rgba(255,217,102,0.15); }
.card-type-item.magic-c:hover   { box-shadow: 0 12px 30px rgba(76,125,255,0.2); }
.card-type-item.magic-s:hover   { box-shadow: 0 12px 30px rgba(255,157,110,0.15); }
.card-type-item.upgrade:hover   { box-shadow: 0 12px 30px rgba(107,227,107,0.15); }
.card-type-item.downgrade:hover { box-shadow: 0 12px 30px rgba(253,51,51,0.15); }
.card-type-item.instant:hover   { box-shadow: 0 12px 30px rgba(179,138,255,0.2); }

.card-type-dot {
    width: 14px; height: 14px;
    border-radius: 50%;
    margin: 0 auto 0.8rem;
}

.card-type-item h3 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.card-type-item p {
    font-size: 0.76rem;
    color: var(--text-secondary);
}

/* ============================================================
   CTA
   ============================================================ */
.cta {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 6rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(242, 193, 78, 0.07) 0%, transparent 60%);
    pointer-events: none;
}

.cta > * { position: relative; z-index: 1; }

.cta h2 { margin-bottom: 0.75rem; }

.cta p {
    margin-bottom: 2.5rem;
    font-size: 1rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
    padding: 2rem 1.5rem;
    text-align: center;
}

footer p {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; }
    .nav-toggle { display: flex; }

    .navbar-links {
        display: none;
        position: fixed;
        top: 65px;
        left: 0; right: 0;
        background: rgba(10, 13, 28, 0.97);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-gold);
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
    }

    .navbar-links.open { display: flex; }
    .navbar-links a { padding: 0.6rem 1rem; border-radius: 8px; }

    .features-grid { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .steps { grid-template-columns: 1fr; }
    .hero { padding: 5rem 1rem 3rem; }
}