/* =============================================
   ✨ Les Étoiles — Astronomie pour enfants
   Design professionnel & immersif
   ============================================= */

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

:root {
    --bg-deep: #05051a;
    --bg-mid: #0c0c30;
    --bg-card: rgba(255,255,255,0.04);
    --bg-card-hover: rgba(255,255,255,0.08);
    --purple: #7c3aed;
    --purple-glow: rgba(124, 58, 237, 0.4);
    --blue: #3b82f6;
    --cyan: #22d3ee;
    --pink: #f472b6;
    --yellow: #fbbf24;
    --orange: #fb923c;
    --green: #34d399;
    --red: #f87171;
    --white: #f1f5f9;
    --white-soft: #cbd5e1;
    --white-dim: #94a3b8;
    --radius-sm: 12px;
    --radius: 20px;
    --radius-lg: 28px;
    --font-display: 'Fredoka One', cursive;
    --font-body: 'Nunito', sans-serif;
    --shadow-card: 0 4px 24px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.06);
    --shadow-card-hover: 0 12px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.1);
    --shadow-glow: 0 0 40px var(--purple-glow);
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--white);
    overflow-x: hidden;
    line-height: 1.8;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--purple);
    color: white;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.25;
}

a { text-decoration: none; color: inherit; }

img { max-width: 100%; height: auto; }

/* --- Étoiles animées --- */
#stars-container {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle var(--duration) ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: var(--min-opacity); transform: scale(1); }
    50% { opacity: 1; transform: scale(1.5); }
}

.shooting-star {
    position: absolute;
    width: 3px; height: 3px;
    background: white;
    border-radius: 50%;
    animation: shoot 4s linear infinite;
    box-shadow: 0 0 8px 3px rgba(255,255,255,0.6);
}

.shooting-star::after {
    content: '';
    position: absolute;
    top: 50%; right: 100%;
    width: 80px; height: 1.5px;
    background: linear-gradient(to left, rgba(255,255,255,0.8), transparent);
    transform: translateY(-50%);
}

@keyframes shoot {
    0% { transform: translate(0, 0) rotate(-45deg); opacity: 1; }
    70% { opacity: 1; }
    100% { transform: translate(-500px, 500px) rotate(-45deg); opacity: 0; }
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(5, 5, 26, 0.85);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 0 2rem;
    height: 64px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.4rem;
    background: linear-gradient(135deg, var(--yellow), var(--pink), var(--purple));
    background-size: 200% 200%;
    animation: gradientShift 4s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.2rem;
    align-items: center;
}

.nav-links a {
    color: var(--white-dim);
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.85rem;
    transition: all var(--transition);
    letter-spacing: 0.02em;
    position: relative;
}

.nav-links a:hover {
    color: white;
    background: rgba(124, 58, 237, 0.15);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 4px; left: 50%; transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--cyan);
    border-radius: 2px;
    transition: width var(--transition);
}

.nav-links a:hover::after { width: 60%; }

.nav-toggle {
    display: none;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: white;
    font-size: 1.3rem;
    padding: 0.4rem 0.7rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition);
}

.nav-toggle:hover { background: rgba(255,255,255,0.1); }

@media (max-width: 900px) {
    .nav-toggle { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: rgba(5, 5, 26, 0.98);
        backdrop-filter: blur(24px);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        gap: 0.2rem;
    }
    .nav-links.active { display: flex; }
    .nav-links a { padding: 0.9rem 1rem; text-align: left; font-size: 0.95rem; border-radius: 10px; }
}

/* --- Hero --- */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 7rem 2rem 5rem;
    background:
        radial-gradient(ellipse 80% 50% at 50% 100%, rgba(124, 58, 237, 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 20% 20%, rgba(34, 211, 238, 0.06), transparent),
        radial-gradient(ellipse 60% 40% at 80% 30%, rgba(244, 114, 182, 0.06), transparent);
}

.hero-content { max-width: 750px; }

.hero-title {
    font-size: clamp(2.2rem, 7vw, 4rem);
    background: linear-gradient(135deg, var(--yellow), var(--pink), var(--purple), var(--cyan));
    background-size: 300% 300%;
    animation: gradientShift 6s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.2rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    color: var(--cyan);
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--white-dim);
    margin-bottom: 2.5rem;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

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

.hero-rocket {
    position: absolute;
    bottom: 8%;
    right: 6%;
    font-size: 4rem;
    animation: floatRocket 4s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(255,255,255,0.3));
}

@keyframes floatRocket {
    0%, 100% { transform: translateY(0) rotate(-15deg); }
    50% { transform: translateY(-25px) rotate(-10deg); }
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    border-radius: 14px;
    font-family: var(--font-body);
    font-weight: 800;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--purple), var(--pink));
    color: white;
    box-shadow: 0 4px 20px var(--purple-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 32px var(--purple-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-secondary {
    background: rgba(255,255,255,0.06);
    color: white;
    border: 1px solid rgba(255,255,255,0.12);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-3px);
    border-color: rgba(255,255,255,0.2);
}

/* --- Sections Grid (Accueil) --- */
.sections-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 950px) { .sections-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .sections-grid { grid-template-columns: 1fr; } }

.section-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.section-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent 40%, var(--glow-color, var(--purple)) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition);
}

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

.section-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    background: var(--bg-card-hover);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: inline-block;
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.section-card h2 {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
    color: white;
}

.section-card p {
    color: var(--white-dim);
    font-size: 0.9rem;
    line-height: 1.6;
}

.planet-card { --glow-color: var(--orange); }
.constellation-card { --glow-color: var(--cyan); }
.moon-card { --glow-color: var(--white-dim); }
.star-card { --glow-color: var(--yellow); }
.exp-card { --glow-color: var(--green); }
.quiz-card { --glow-color: var(--pink); }

/* --- Fun Facts --- */
.fun-facts {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem;
    text-align: center;
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--yellow);
}

.fact-carousel {
    max-width: 650px;
    margin: 0 auto;
}

.fact-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2.5rem;
    box-shadow: var(--shadow-card);
}

.fact-text {
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
    min-height: 80px;
    color: var(--white-soft);
    transition: opacity 0.4s ease;
}

.fact-btn {
    background: linear-gradient(135deg, var(--purple), var(--cyan));
    color: white;
    border: none;
    padding: 0.65rem 2rem;
    border-radius: 12px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 2px 12px var(--purple-glow);
}

.fact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--purple-glow);
}

/* --- Footer --- */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 3.5rem 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.04);
    background: linear-gradient(to top, rgba(5,5,26,0.8), transparent);
}

.footer p { color: var(--white-dim); }

.footer-small {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    color: rgba(148,163,184,0.6);
}

/* =============================================
   PAGES INTERNES
   ============================================= */

.page-container {
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: 7rem 2rem 4rem;
}

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

.page-header .page-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 1rem;
}

.page-header h1 {
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    background: linear-gradient(135deg, var(--yellow), var(--pink), var(--purple));
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--white-dim);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Content Card --- */
.content-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}

.content-card h2 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--cyan);
    position: relative;
    padding-left: 1.2rem;
}

.content-card h2::before {
    content: '';
    position: absolute;
    left: 0; top: 4px;
    width: 4px;
    height: calc(100% - 8px);
    background: linear-gradient(to bottom, var(--cyan), var(--purple));
    border-radius: 4px;
}

.content-card h3 {
    font-size: 1.15rem;
    margin: 1.5rem 0 0.6rem;
    color: var(--yellow);
}

.content-card p {
    margin-bottom: 0.8rem;
    color: var(--white-dim);
}

.content-card ul, .content-card ol {
    margin: 0.5rem 0 1rem 1.5rem;
    color: var(--white-dim);
}

.content-card li {
    margin-bottom: 0.4rem;
    line-height: 1.7;
}

.content-card strong {
    color: var(--white-soft);
}

/* --- Images --- */
.space-img {
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius);
    margin: 1.5rem auto;
    display: block;
    box-shadow: 0 8px 40px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.08);
}

.space-img-small {
    width: 100%;
    max-width: 350px;
    border-radius: var(--radius);
    margin: 1rem auto;
    display: block;
    box-shadow: 0 4px 24px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.08);
}

.img-caption {
    text-align: center;
    color: var(--white-dim);
    font-size: 0.85rem;
    font-style: italic;
    margin-top: 0.3rem;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.planet-visual {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 1rem;
    display: block;
    box-shadow: 0 4px 24px rgba(0,0,0,0.5), 0 0 40px rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.08);
    transition: all var(--transition);
}

.planet-card-detail:hover .planet-visual {
    transform: scale(1.08);
    box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 60px rgba(124,58,237,0.2);
}

/* --- Planet Grid --- */
.planet-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    margin: 2.5rem 0;
}

@media (max-width: 900px) { .planet-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .planet-grid { grid-template-columns: 1fr; } }

.planet-card-detail {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.planet-card-detail::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(124,58,237,0.1), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.planet-card-detail:hover::after { opacity: 1; }

.planet-card-detail:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(124,58,237,0.3);
}

.planet-card-detail h3 {
    font-size: 1.15rem;
    color: white;
    margin-bottom: 0.3rem;
    position: relative;
    z-index: 1;
}

.planet-card-detail .planet-type {
    color: var(--purple);
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    z-index: 1;
}

.planet-card-detail p {
    color: var(--white-dim);
    font-size: 0.85rem;
    position: relative;
    z-index: 1;
}

/* --- Planet Detail Panel --- */
.planet-detail-panel {
    display: none;
    background: var(--bg-card);
    border: 1px solid rgba(124,58,237,0.2);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-glow);
}

.planet-detail-panel.active {
    display: block;
    animation: fadeInUp 0.5s ease;
}

.planet-detail-panel h3 {
    font-size: 1.5rem;
    color: var(--yellow);
    margin-bottom: 1rem;
}

.planet-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.stat {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    padding: 1.2rem 1rem;
    border-radius: 16px;
    text-align: center;
    transition: all var(--transition);
}

.stat:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
}

.stat-label {
    color: var(--cyan);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.stat-value {
    color: white;
    font-size: 1.05rem;
    font-weight: 800;
    margin-top: 0.4rem;
}

/* --- Constellation Grid --- */
.constellation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.2rem;
    margin: 2rem 0;
}

.constellation-item {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    padding: 1.8rem;
    cursor: pointer;
    transition: all var(--transition);
}

.constellation-item:hover {
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.constellation-item .const-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.constellation-item h3 { color: var(--cyan); font-size: 1.1rem; }
.constellation-item p { color: var(--white-dim); font-size: 0.9rem; margin-top: 0.5rem; }

/* --- Moon Phases --- */
.moon-phases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}

@media (max-width: 600px) { .moon-phases-grid { grid-template-columns: repeat(2, 1fr); } }

.moon-phase {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 18px;
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all var(--transition);
}

.moon-phase:hover {
    background: var(--bg-card-hover);
    transform: scale(1.06);
}

.moon-phase .moon-emoji {
    font-size: 2.8rem;
    display: block;
    margin-bottom: 0.5rem;
}

.moon-phase .phase-name {
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--cyan);
}

/* --- Quiz --- */
.quiz-container { max-width: 700px; margin: 0 auto; }

.quiz-question {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 2rem 2.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-card);
}

.quiz-question h3 {
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
    color: var(--yellow);
    line-height: 1.5;
}

.quiz-options { display: flex; flex-direction: column; gap: 0.7rem; }

.quiz-option {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.95rem;
    color: var(--white-soft);
    text-align: left;
    font-family: var(--font-body);
    font-weight: 600;
}

.quiz-option:hover {
    border-color: var(--purple);
    background: rgba(124, 58, 237, 0.12);
}

.quiz-option.correct {
    border-color: var(--green);
    background: rgba(52, 211, 153, 0.15);
    color: var(--green);
}

.quiz-option.wrong {
    border-color: var(--red);
    background: rgba(248, 113, 113, 0.15);
    color: var(--red);
}

.quiz-option.disabled { pointer-events: none; }

.quiz-score {
    text-align: center;
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(124,58,237,0.15), rgba(34,211,238,0.08));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(124,58,237,0.2);
    box-shadow: var(--shadow-glow);
}

.quiz-score .score-number {
    font-size: 4rem;
    font-family: var(--font-display);
    color: var(--yellow);
}

.quiz-score .score-text {
    font-size: 1.1rem;
    color: var(--cyan);
    margin-top: 0.5rem;
}

/* --- Experiences --- */
.experience-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.experience-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--green), var(--cyan));
}

.experience-card h2 {
    color: var(--green);
    font-size: 1.25rem;
    padding-left: 0;
}

.experience-card h2::before { display: none; }

.difficulty {
    display: inline-block;
    padding: 0.25rem 0.9rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin: 0.5rem 0 1rem;
}

.difficulty-easy { background: rgba(52, 211, 153, 0.15); color: var(--green); }
.difficulty-medium { background: rgba(251, 146, 60, 0.15); color: var(--orange); }
.difficulty-hard { background: rgba(248, 113, 113, 0.15); color: var(--red); }

.materials-list {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px;
    padding: 1rem 1.5rem;
    margin: 1rem 0;
}

.materials-list h4 { color: var(--yellow); margin-bottom: 0.5rem; }

.step-list {
    counter-reset: steps;
    list-style: none;
    margin: 1rem 0;
}

.step-list li {
    counter-increment: steps;
    padding: 0.8rem 0 0.8rem 3.2rem;
    position: relative;
    color: var(--white-dim);
}

.step-list li::before {
    content: counter(steps);
    position: absolute;
    left: 0; top: 0.5rem;
    width: 2.2rem; height: 2.2rem;
    background: linear-gradient(135deg, var(--purple), var(--cyan));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
    color: white;
    box-shadow: 0 2px 8px var(--purple-glow);
}

/* --- Lexique --- */
.lexicon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.lexicon-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 1.3rem 1.5rem;
    transition: all var(--transition);
}

.lexicon-item:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-2px);
}

.lexicon-item h4 {
    color: var(--yellow);
    font-size: 1rem;
    margin-bottom: 0.3rem;
}

.lexicon-item p {
    color: var(--white-dim);
    font-size: 0.88rem;
    margin: 0;
}

/* --- Star types --- */
.star-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.2rem;
    margin: 2rem 0;
}

.star-type-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    padding: 1.8rem 1.5rem;
    text-align: center;
    transition: all var(--transition);
}

.star-type-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.star-type-card .star-emoji { font-size: 2.5rem; margin-bottom: 0.5rem; }
.star-type-card h3 { color: var(--yellow); font-size: 1rem; }
.star-type-card p { color: var(--white-dim); font-size: 0.88rem; margin-top: 0.5rem; }

/* --- Back Link --- */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 2rem;
    color: var(--purple);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all var(--transition);
    padding: 0.4rem 0.8rem;
    border-radius: 10px;
}

.back-link:hover {
    color: var(--cyan);
    background: rgba(255,255,255,0.04);
}

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeInUp 0.7s ease forwards;
}

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(124,58,237,0.3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(124,58,237,0.5); }