:root {
    --primary: #4D96FF;
    --secondary: #6BCB77;
    --accent: #FF6B6B;
    --warning: #FFD93D;
    --orange: #FF8400;
    --purple: #9b59b6;
    --teal: #1abc9c;
    --pink: #e91e63;
    --bg-main: #fdfcf0;
    --text-main: #1E293B;
    --text-light: #64748B;
    --border-dark: #1E293B;
    --card-shadow: 6px 6px 0px 0px #1E293B;
    --mascot-size: 150px;
}

@keyframes mascot-float {
    0%, 100% { transform: translateY(0) rotate(-1deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

@keyframes mascot-bounce {
    0%, 100% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.05) translateY(-10px); }
}

.app-mascot {
    width: var(--mascot-size);
    height: auto;
    animation: mascot-float 5s ease-in-out infinite;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), filter 0.3s ease;
    filter: drop-shadow(0 10px 15px rgba(0,0,0,0.1));
}

.app-mascot:hover {
    transform: scale(1.1) rotate(3deg);
    filter: drop-shadow(0 15px 25px rgba(0,0,0,0.15));
}

.app-helper {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
}

.app-helper * { pointer-events: auto; }

.app-bubble {
    background: white;
    border: 4px solid var(--border-dark);
    border-radius: 20px;
    padding: 12px 20px;
    font-weight: 800;
    margin-bottom: 10px;
    position: relative;
    box-shadow: 6px 6px 0 var(--border-dark);
    max-width: 220px;
    text-align: center;
    opacity: 0;
    transform: scale(0.8) translateY(20px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.app-bubble.show {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.app-bubble::after {
    content: '';
    position: absolute;
    bottom: -15px;
    right: 30px;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 15px solid var(--border-dark);
}

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

body {
    font-family: 'Fredoka', 'Faruma', 'MV Boli', sans-serif;
    direction: rtl;
    background: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background 0.8s ease;
    margin: 0;
    padding: 0;
}

#app { width: 100%; margin: 0; padding: 0; }
#view-container { width: 100%; margin: 0; padding: 0; }

/* Robust Language Backgrounds */
body[data-lang="english"] { background: linear-gradient(135deg, #fdfcf0 0%, #ebedee 100%) !important; direction: ltr; }
body[data-lang="arabic"] { background: linear-gradient(135deg, #fdfcf0 0%, #c3cfe2 100%) !important; }
body[data-lang="dhivehi"] { background: linear-gradient(135deg, #fdfcf0 0%, #e0c3fc 100%) !important; }

/* Floating Decorations */
.bg-letter {
    position: fixed;
    font-size: 5rem;
    opacity: 0.05;
    z-index: -1;
    user-select: none;
    pointer-events: none;
}

/* Header & Nav */
.app-header {
    background: white;
    padding: 1rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 6px solid var(--border-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo { font-size: 2.2rem; font-weight: 900; display: flex; align-items: center; gap: 10px; color: var(--border-dark); }

.main-nav { display: flex; gap: 15px; }

.nav-btn {
    padding: 12px 24px;
    font-weight: 800;
    border: 3px solid var(--border-dark);
    border-radius: 20px;
    background: white;
    cursor: pointer;
    box-shadow: 4px 4px 0 var(--border-dark);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--border-dark); }
.nav-btn.active { background: var(--secondary); color: white; transform: translate(2px, 2px); box-shadow: 0 0 0; }

.nav-btn.premium::after {
    content: '🔒';
    position: absolute;
    top: -5px;
    right: -5px;
    font-size: 1rem;
    background: white;
    border: 2px solid var(--border-dark);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.premium-tag {
    background: var(--warning);
    color: var(--border-dark);
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 900;
    border: 2px solid var(--border-dark);
    margin-left: 8px;
}

.payment-card {
    background: #f8f9fa;
    border: 3px dashed var(--border-dark);
    padding: 20px;
    border-radius: 20px;
    margin: 20px 0;
    text-align: left;
}

.feature-visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin: 25px 0;
}

.feature-tile {
    background: white;
    border: 3px solid var(--border-dark);
    border-radius: 20px;
    padding: 15px;
    text-align: center;
    box-shadow: 4px 4px 0 var(--border-dark);
    transition: all 0.2s;
}

.feature-tile:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--border-dark); }

.feature-tile .icon { font-size: 2.2rem; margin-bottom: 8px; display: block; }
.feature-tile .label { font-size: 0.85rem; font-weight: 900; color: var(--text-main); line-height: 1.4; }

.feature-tile.blue { background: #e0f2fe; border-color: var(--primary); }
.feature-tile.green { background: #f0fdf4; border-color: var(--secondary); }
.feature-tile.orange { background: #fff7ed; border-color: var(--orange); }
.feature-tile.pink { background: #fdf2f8; border-color: var(--accent); }
.feature-tile.purple { background: #faf5ff; border-color: var(--purple); }

/* Profile Avatar Hub */
.profile-avatar-hub {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 4px solid var(--border-dark);
    background: var(--warning);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.2rem;
    cursor: pointer;
    box-shadow: 4px 4px 0 var(--border-dark);
    transition: all 0.2s;
    user-select: none;
}

.profile-avatar-hub:hover { transform: scale(1.1); box-shadow: 6px 6px 0 var(--border-dark); }

/* Landing Page (Edudhaitha Style) */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 4rem 10%;
    width: 100%;
    min-height: 80vh;
    position: relative;
    overflow: hidden;
}

.hero-content { 
    max-width: 700px; 
    text-align: right; 
    z-index: 10;
}

.hero-image {
    position: absolute;
    left: -100px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 0;
    pointer-events: none;
}

.hero-image img {
    --mascot-size: 1120px;
    width: var(--mascot-size);
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.15));
}

.start-btn {
    padding: 20px 50px;
    font-size: 1.8rem;
    background: var(--warning);
    border: 4px solid var(--border-dark);
    border-radius: 30px;
    box-shadow: 10px 10px 0 var(--border-dark);
    cursor: pointer;
    font-weight: 900;
}

.start-btn:hover { transform: translate(-4px, -4px); box-shadow: 14px 14px 0 var(--border-dark); }

/* Profile Switcher */
.profile-switcher {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 15px;
    background: #f1f5f9;
    border: 3px solid var(--border-dark);
    border-radius: 40px;
    cursor: pointer;
}

.current-avatar {
    width: 40px;
    height: 40px;
    background: white;
    border: 2px solid var(--border-dark);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
}

.bubble-particle {
    position: fixed;
    border: 3px solid white;
    border-radius: 50%;
    pointer-events: none;
    z-index: 4000;
    animation: bubbleUp 1s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    will-change: transform, opacity;
}

@keyframes bubbleUp {
    0% { transform: scale(0) translate3d(0, 0, 0); opacity: 0; }
    50% { opacity: 0.8; }
    100% { transform: scale(2) translate3d(0, -150px, 0); opacity: 0; }
}

.confetti {
    position: fixed;
    width: 12px;
    height: 12px;
    z-index: 5000;
    border-radius: 3px;
    animation: confettiExplode 2s ease-out forwards;
    will-change: transform, opacity;
}

@keyframes confettiExplode {
    0% { transform: translate3d(0,0,0) rotate(0deg); opacity: 1; }
    100% { transform: translate3d(var(--tx), var(--ty), 0) rotate(720deg); opacity: 0; }
}

.pop-star {
    position: absolute;
    font-size: 2.5rem;
    pointer-events: none;
    z-index: 3000;
    animation: starPop 0.8s ease-out forwards;
    color: var(--warning);
    text-shadow: 2px 2px 0 var(--border-dark);
}

@keyframes starPop {
    0% { transform: scale(0) rotate(0deg); opacity: 0; }
    50% { opacity: 1; transform: scale(1.5) rotate(45deg); }
    100% { transform: scale(0.5) translate3d(0, -50px, 0) rotate(90deg); opacity: 0; }
}

.hall-filter-bar {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.filter-btn {
    padding: 10px 25px;
    font-weight: 800;
    border: 3px solid var(--border-dark);
    border-radius: 15px;
    background: white;
    cursor: pointer;
    box-shadow: 4px 4px 0 var(--border-dark);
}

.filter-btn.active { background: var(--warning); transform: translate(2px, 2px); box-shadow: 0 0 0; }

/* Feature Showcase */
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    padding: 4rem;
    background: white;
}

.showcase-card {
    padding: 50px;
    border-radius: 40px;
    border: 5px solid var(--border-dark);
    box-shadow: 12px 12px 0 var(--border-dark);
    text-align: center;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(30, 41, 59, 0.8);
    display: flex; justify-content: center; align-items: center;
    z-index: 2000;
}

.parent-modal {
    background: white;
    padding: clamp(1.5rem, 5vw, 3rem);
    border-radius: 40px;
    border: 6px solid var(--border-dark);
    box-shadow: 15px 15px 0 var(--border-dark);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

#upgrade-modal .parent-modal {
    background: linear-gradient(135deg, #fffcf0 0%, #fdf2f8 50%, #f0f9ff 100%);
    border-color: var(--orange);
}

.price-badge {
    background: var(--orange);
    color: white;
    padding: 10px 25px;
    border-radius: 20px;
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 900;
    border: 3px solid var(--border-dark);
    box-shadow: 4px 4px 0 var(--border-dark);
    margin: 15px 0;
    transform: rotate(-2deg);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    background: #fee2e2;
    border: 3px solid var(--border-dark);
    border-radius: 15px;
    color: #ef4444;
    font-size: 1.5rem;
    font-weight: 900;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 4px 4px 0 var(--border-dark);
    transition: all 0.2s;
    z-index: 10;
}

.modal-close:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--border-dark); }
.modal-close:active { transform: translate(2px, 2px); box-shadow: 0 0 0; }

.settings-label { 
    display: block; 
    margin-bottom: 12px; 
    font-weight: 900; 
    font-size: 1.2rem;
    color: var(--border-dark);
}

.settings-input, .settings-select {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.1rem;
    font-weight: 700;
    border: 4px solid var(--border-dark);
    border-radius: 20px;
    background: #f8f9fa;
    margin-bottom: 20px;
    transition: all 0.2s;
}

.settings-input:focus {
    background: white;
    outline: none;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.btn-google {
    width: 100%;
    padding: 18px;
    background: white;
    border: 4px solid var(--border-dark);
    border-radius: 25px;
    font-weight: 900;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    cursor: pointer;
    margin-top: 20px;
    box-shadow: 6px 6px 0 var(--border-dark);
    transition: all 0.2s;
}

.btn-google:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--border-dark); }

.forgot-link {
    display: block;
    margin-top: 15px;
    color: var(--text-light);
    font-weight: 800;
    cursor: pointer;
    text-decoration: underline;
}

.forgot-link:hover { color: var(--primary); }

.auth-toggle {
    text-align: center;
    margin-top: 20px;
    font-weight: 800;
    color: var(--text-light);
    cursor: pointer;
}

.auth-toggle b { color: var(--primary); text-decoration: underline; }

/* Challenge Notification */
.challenge-toast {
    position: fixed;
    top: 100px;
    right: 20px;
    background: #FFD93D;
    padding: 20px 30px;
    border-radius: 25px;
    border: 4px solid var(--border-dark);
    box-shadow: 8px 8px 0 var(--border-dark);
    z-index: 1500;
    animation: slideIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    gap: 20px;
}

@keyframes slideIn { from { transform: translateX(120%); } to { transform: translateX(0); } }

/* Grid Cards */
.alphabet-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 25px; padding: 2rem; }
.letter-card {
    background: white;
    padding: 30px;
    border-radius: 35px;
    border: 5px solid var(--border-dark);
    box-shadow: 8px 8px 0 var(--border-dark);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}
.letter-card:nth-child(4n+1) { border-color: var(--primary); color: var(--primary); }
.letter-card:nth-child(4n+2) { border-color: var(--accent); color: var(--accent); }
.letter-card:nth-child(4n+3) { border-color: var(--secondary); color: var(--secondary); }
.letter-card:nth-child(4n+4) { border-color: var(--purple); color: var(--purple); }

.letter-card:hover { transform: scale(1.05); }

/* Animations */
@keyframes float {
    0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
    50% { transform: translate3d(0, -30px, 0) rotate(5deg); }
}

@media (max-width: 1100px) {
    .hero-section { padding: 4rem 5%; }
    .hero-image img { --mascot-size: 800px; }
    .hero-image { left: -150px; }
    .hero-title { font-size: clamp(3rem, 8vw, 5rem); }
}

@media (max-width: 850px) {
    .app-header { padding: 1rem; flex-direction: column; gap: 15px; height: auto; }
    .main-nav { 
        width: 100%; 
        overflow-x: auto; 
        padding: 5px;
        scrollbar-width: none;
        justify-content: flex-start;
    }
    .main-nav::-webkit-scrollbar { display: none; }
    .nav-btn { padding: 8px 16px; font-size: 0.9rem; flex-shrink: 0; }
    
    .hero-section { 
        padding: 4rem 2rem; 
        flex-direction: column; 
        justify-content: center;
        text-align: center; 
        min-height: 60vh;
    }
    .hero-content { text-align: center; max-width: 100%; }
    .hero-image { 
        position: relative; 
        left: 0; 
        top: 0; 
        transform: none; 
        margin-bottom: 2rem;
        display: flex;
        justify-content: center;
        width: 100%;
    }
    .hero-image img { --mascot-size: 300px; }
    
    .showcase-grid { padding: 2rem; grid-template-columns: 1fr; }
    .alphabet-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); padding: 1rem; }
    .parent-modal { padding: 2rem; border-radius: 30px; }
}

@media (max-width: 480px) {
    .logo { font-size: 1.8rem; }
    .hero-title { font-size: 2.5rem; }
    .hero-image { width: 200px; height: 200px; font-size: 4rem; }
    .alphabet-grid { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .letter-card { padding: 20px; border-radius: 25px; }
}

/* Admin Dashboard */
.admin-dashboard { background: #0f172a; color: white; min-height: 100vh; padding: 40px; }
.admin-card { background: #1e293b; border: 2px solid #334155; border-radius: 24px; padding: 30px; margin-bottom: 30px; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; border-bottom: 2px solid #334155; padding-bottom: 20px; }
.admin-table { width: 100%; border-collapse: collapse; margin-top: 20px; }
.admin-table th { text-align: left; padding: 15px; background: #334155; color: #94a3b8; font-size: 0.9rem; text-transform: uppercase; }
.admin-table td { padding: 15px; border-bottom: 1px solid #334155; }
.status-pill { padding: 5px 12px; border-radius: 20px; font-size: 0.8rem; font-weight: 800; }
.status-pending { background: #78350f; color: #fbbf24; }
.status-verified { background: #064e3b; color: #34d399; }
.admin-input { background: #0f172a; border: 2px solid #334155; color: white; padding: 12px; border-radius: 12px; width: 100%; margin-top: 8px; }
.admin-btn-sm { padding: 6px 12px; font-size: 0.8rem; border-radius: 8px; cursor: pointer; border: none; background: var(--primary); color: white; font-weight: 800; }
.secret-trigger { opacity: 0.1; cursor: default; user-select: none; }
@media (max-width: 850px) { .admin-dashboard { padding: 20px; } .admin-table { display: block; overflow-x: auto; } }