/**
 * Enfokids - Estilos principales
 * Plataforma educativa para niños
 * Diseño colorido, amigable y divertido
 */

/* ===== VARIABLES ===== */
:root {
    --primary: #FF6B6B;
    --primary-dark: #E85555;
    --primary-light: #FF8E8E;
    --secondary: #4ECDC4;
    --secondary-dark: #3DBDB5;
    --secondary-light: #7EDDD6;
    --accent: #FFE66D;
    --accent-dark: #FFDD3C;
    --purple: #A855F7;
    --purple-light: #C084FC;
    --blue: #60A5FA;
    --blue-light: #93C5FD;
    --green: #34D399;
    --green-light: #6EE7B7;
    --orange: #FB923C;
    --orange-light: #FDBA74;
    --pink: #F472B6;
    --dark: #2D3436;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-400: #A3A3A3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --sidebar-bg: #2D3436;
    --sidebar-hover: #3D4648;
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.15);
    --font: 'Nunito', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    background: var(--gray-50);
    color: var(--dark);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

/* ===== SIDEBAR ===== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 260px;
    height: 100vh;
    background: var(--sidebar-bg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 1.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand h2 {
    color: #fff;
    font-weight: 800;
    font-size: 1.5rem;
    margin: 0;
}

.sidebar-brand span {
    color: var(--accent);
}

.sidebar-nav {
    list-style: none;
    padding: 1rem 0.75rem;
    flex: 1;
}

.sidebar-nav .nav-section {
    padding: 0.5rem 0.75rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gray-400);
}

.sidebar-nav .nav-item {
    margin-bottom: 4px;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #cbd5e1;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.sidebar-nav .nav-link:hover {
    background: var(--sidebar-hover);
    color: #fff;
}

.sidebar-nav .nav-link.active {
    background: linear-gradient(135deg, var(--primary), var(--purple));
    color: #fff;
    box-shadow: 0 4px 12px rgba(255,107,107,0.3);
}

.sidebar-nav .nav-link i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.user-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--sidebar-hover);
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
}

.user-avatar-sidebar {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 1.1rem;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    color: var(--gray-400);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-level {
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 700;
}

.logout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.6rem;
    background: rgba(255,107,107,0.1);
    border: 1px solid rgba(255,107,107,0.2);
    border-radius: var(--radius-sm);
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.logout-btn:hover {
    background: rgba(255,107,107,0.2);
    color: var(--primary);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: 260px;
    min-height: 100vh;
    transition: margin 0.3s ease;
}

.top-header {
    background: #fff;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.page-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--dark);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.page-title .emoji {
    font-size: 1.5rem;
}

.content-area {
    padding: 1.5rem;
}

/* ===== CARDS ===== */
.card {
    background: #fff;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background: #fff;
    border-bottom: 1px solid var(--gray-100);
    font-weight: 700;
    padding: 1rem 1.25rem;
    font-size: 1rem;
}

/* ===== STAT CARDS ===== */
.stat-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: 4px 4px 0 0;
}

.stat-card.primary::before { background: linear-gradient(90deg, var(--primary), var(--orange)); }
.stat-card.secondary::before { background: linear-gradient(90deg, var(--secondary), var(--blue)); }
.stat-card.accent::before { background: linear-gradient(90deg, var(--accent), var(--orange)); }
.stat-card.purple::before { background: linear-gradient(90deg, var(--purple), var(--pink)); }

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary { background: rgba(255,107,107,0.12); color: var(--primary); }
.stat-icon.secondary { background: rgba(78,205,196,0.12); color: var(--secondary); }
.stat-icon.accent { background: rgba(255,230,109,0.2); color: #D4A800; }
.stat-icon.purple { background: rgba(168,85,247,0.12); color: var(--purple); }
.stat-icon.green { background: rgba(52,211,153,0.12); color: var(--green); }
.stat-icon.blue { background: rgba(96,165,250,0.12); color: var(--blue); }

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 600;
}

/* ===== COURSE CARDS ===== */
.course-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.course-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.course-image .course-icon {
    font-size: 3.5rem;
    color: rgba(255,255,255,0.9);
    z-index: 2;
}

.course-image .age-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255,255,255,0.95);
    padding: 0.3rem 0.7rem;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--dark);
    z-index: 2;
}

.course-body {
    padding: 1.25rem;
}

.course-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.course-meta {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 600;
}

.course-progress {
    margin-top: 0.75rem;
}

.progress {
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--secondary), var(--green));
    border-radius: var(--radius-full);
    transition: width 0.6s ease;
}

.progress-bar.streak {
    background: linear-gradient(90deg, var(--orange), var(--primary));
}

/* ===== GAMIFICATION ===== */
.xp-bar {
    background: var(--gray-100);
    border-radius: var(--radius-full);
    height: 12px;
    overflow: hidden;
    position: relative;
}

.xp-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--orange));
    border-radius: var(--radius-full);
    transition: width 0.8s ease;
    position: relative;
}

.xp-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.level-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, var(--accent), var(--orange));
    color: var(--dark);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 800;
}

.points-display {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--purple);
}

.streak-display {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--orange);
}

/* Badge Grid */
.badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
}

.badge-item {
    text-align: center;
    padding: 1rem 0.5rem;
    border-radius: var(--radius-md);
    background: var(--gray-50);
    transition: var(--transition);
}

.badge-item:hover {
    transform: scale(1.05);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.badge-item.locked {
    opacity: 0.4;
    filter: grayscale(1);
}

.badge-item .badge-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.4rem;
}

.badge-item .badge-name {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--gray-600);
    line-height: 1.2;
}

/* Stars Rating */
.stars {
    display: flex;
    gap: 0.2rem;
}

.stars .star {
    color: var(--gray-200);
    font-size: 1.2rem;
}

.stars .star.filled {
    color: var(--accent);
}

/* ===== BUTTONS ===== */
.btn-kids {
    border: none;
    border-radius: var(--radius-md);
    padding: 0.85rem 1.5rem;
    font-weight: 700;
    font-size: 0.95rem;
    font-family: var(--font);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-kids:hover {
    transform: translateY(-2px);
}

.btn-kids:active {
    transform: translateY(0);
}

.btn-kids-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 15px rgba(255,107,107,0.3);
}

.btn-kids-primary:hover {
    box-shadow: 0 8px 25px rgba(255,107,107,0.4);
    color: #fff;
}

.btn-kids-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: #fff;
    box-shadow: 0 4px 15px rgba(78,205,196,0.3);
}

.btn-kids-secondary:hover {
    box-shadow: 0 8px 25px rgba(78,205,196,0.4);
    color: #fff;
}

.btn-kids-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--dark);
    box-shadow: 0 4px 15px rgba(255,230,109,0.3);
}

.btn-kids-purple {
    background: linear-gradient(135deg, var(--purple), #9333EA);
    color: #fff;
    box-shadow: 0 4px 15px rgba(168,85,247,0.3);
}

.btn-kids-purple:hover {
    box-shadow: 0 8px 25px rgba(168,85,247,0.4);
    color: #fff;
}

.btn-kids-outline {
    background: transparent;
    border: 2px solid var(--gray-200);
    color: var(--gray-600);
}

.btn-kids-outline:hover {
    border-color: var(--secondary);
    color: var(--secondary);
}

.btn-kids-lg {
    padding: 1.1rem 2rem;
    font-size: 1.1rem;
    border-radius: var(--radius-xl);
}

/* ===== FORMS ===== */
.form-control-kids {
    border-radius: var(--radius-md);
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--gray-200);
    font-size: 1rem;
    font-family: var(--font);
    font-weight: 600;
    transition: var(--transition);
}

.form-control-kids:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 4px rgba(78,205,196,0.15);
    outline: none;
}

.form-control-kids::placeholder {
    color: var(--gray-400);
    font-weight: 500;
}

.form-label-kids {
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

/* ===== ALERTS ===== */
.alert-kids {
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    border: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-kids-success {
    background: rgba(52,211,153,0.12);
    color: #065F46;
}

.alert-kids-error {
    background: rgba(255,107,107,0.12);
    color: #991B1B;
}

.alert-kids-warning {
    background: rgba(255,230,109,0.2);
    color: #92400E;
}

.alert-kids-info {
    background: rgba(96,165,250,0.12);
    color: #1E40AF;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-400);
}

.empty-state .emoji {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: block;
}

.empty-state h3 {
    color: var(--gray-600);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--gray-400);
    max-width: 300px;
    margin: 0 auto;
}

/* ===== SCREEN TIME INDICATOR ===== */
.screen-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
}

.screen-time.warning {
    background: rgba(255,107,107,0.1);
    color: var(--primary);
}

.screen-time .time-icon {
    font-size: 1rem;
}

/* ===== PARENT DASHBOARD ===== */
.child-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--secondary);
    transition: var(--transition);
}

.child-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(3px);
}

.child-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.3rem;
    font-weight: 800;
}

/* ===== ANIMATIONS ===== */
.fade-in {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bounce-in {
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounceIn {
    from { opacity: 0; transform: scale(0.3); }
    50% { transform: scale(1.05); }
    to { opacity: 1; transform: scale(1); }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.wiggle {
    animation: wiggle 0.5s ease;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

/* Celebration Animation */
.celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* ===== BOTTOM NAV (Mobile) ===== */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid var(--gray-200);
    z-index: 1000;
    padding: 0.5rem 0;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
    box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
}

.bottom-nav-items {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--gray-400);
    font-size: 0.6rem;
    font-weight: 700;
    padding: 0.3rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.bottom-nav-item i {
    font-size: 1.3rem;
    margin-bottom: 0.1rem;
}

.bottom-nav-item.active {
    color: var(--primary);
}

.bottom-nav-item:hover {
    color: var(--primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding-bottom: 80px;
    }
    
    .content-area {
        padding: 1rem;
    }
    
    .bottom-nav {
        display: block;
    }
    
    .top-header {
        padding: 0.75rem 1rem;
    }
    
    .page-title {
        font-size: 1.1rem;
    }
}

@media (max-width: 576px) {
    .stat-value {
        font-size: 1.4rem;
    }
    
    .badge-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .course-image {
        height: 130px;
    }
}

/* ===== PUBLIC PAGES ===== */
.public-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 50%, var(--blue) 100%);
    padding: 6rem 0 4rem;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.public-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='3' fill='%23ffffff' fill-opacity='0.1'/%3E%3C/svg%3E");
}

.public-hero h1 {
    font-size: 2.8rem;
    font-weight: 900;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.public-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Public Navbar */
.navbar-kids {
    background: #fff;
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-kids .navbar-brand {
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--primary);
}

.navbar-kids .nav-link {
    font-weight: 700;
    color: var(--dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.navbar-kids .nav-link:hover {
    color: var(--primary);
    background: rgba(255,107,107,0.05);
}

/* ===== CERTIFICATE ===== */
.certificate-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--accent);
    position: relative;
    overflow: hidden;
}

.certificate-card::before {
    content: '🎉';
    position: absolute;
    top: 15px;
    left: 20px;
    font-size: 2rem;
}

.certificate-card::after {
    content: '🌟';
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
}

/* ===== EVALUATION ===== */
.question-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--secondary);
}

.option-btn {
    display: block;
    width: 100%;
    padding: 1rem 1.25rem;
    margin-bottom: 0.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
}

.option-btn:hover {
    border-color: var(--secondary);
    background: rgba(78,205,196,0.05);
}

.option-btn.selected {
    border-color: var(--secondary);
    background: rgba(78,205,196,0.1);
    color: var(--secondary-dark);
}

.option-btn.correct {
    border-color: var(--green);
    background: rgba(52,211,153,0.1);
    color: #065F46;
}

.option-btn.incorrect {
    border-color: var(--primary);
    background: rgba(255,107,107,0.1);
    color: #991B1B;
}

/* ===== LANDING PAGE ===== */
.feature-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-card .feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    font-weight: 800;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.feature-card p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

/* ===== UTILITIES ===== */
.text-primary-kids { color: var(--primary); }
.text-secondary-kids { color: var(--secondary); }
.text-accent-kids { color: var(--accent); }
.text-purple-kids { color: var(--purple); }

.bg-gradient-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.bg-gradient-secondary { background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)); }
.bg-gradient-purple { background: linear-gradient(135deg, var(--purple), #9333EA); }
.bg-gradient-fun { background: linear-gradient(135deg, var(--primary), var(--purple), var(--blue)); }

.rounded-kids { border-radius: var(--radius-lg); }
.rounded-kids-xl { border-radius: var(--radius-xl); }

/* ===== LOADING ===== */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== TOOLTIP KIDS ===== */
.tooltip-kids {
    position: relative;
}

.tooltip-kids::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.tooltip-kids:hover::after {
    opacity: 1;
    visibility: visible;
}