/* ScienceKid.org Custom Styles - Science Education Theme */

:root {
    /* ScienceKid Brand Colors - Based on actual logo */
    --primary-color: #1e40af;         /* ScienceKid Blue */
    --secondary-color: #64748b;       /* Slate Gray */
    --accent-color: #3b82f6;          /* Bright Blue */
    --brand-orange: #f97316;          /* ScienceKid Orange accent */
    
    /* STEM Subject Colors - ScienceKid themed */
    --math-color: #059669;            /* Emerald Green */
    --science-color: #0284c7;         /* Science Blue */
    --engineering-color: #dc2626;     /* Engineering Red */
    --coding-color: #7c3aed;          /* Coding Purple */
    
    /* Status Colors */
    --success-color: #10b981;         /* Green */
    --warning-color: #f59e0b;         /* Amber */
    --danger-color: #ef4444;          /* Red */
    --info-color: #06b6d4;            /* Cyan */
    
    /* Neutral Colors */
    --light-color: #f8fafc;           /* Light Gray */
    --dark-color: #1e293b;            /* Dark Slate */
    --text-color: #334155;            /* Slate */
    --border-color: #e2e8f0;          /* Light Border */
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f1f5f9;
    --bg-accent: #e0f2fe;
}

/* Custom gradient backgrounds */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--math-color) 100%);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #f97316 100%);
}

.bg-gradient-science {
    background: linear-gradient(135deg, var(--science-color) 0%, var(--info-color) 100%);
}

.bg-gradient-brand {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--brand-orange) 100%);
}

/* Hero section styling */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--brand-orange) 100%);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(30, 64, 175, 0.3);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

/* Card hover effects */
.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

/* Challenge cards */
.challenge-card {
    border-left: 4px solid var(--primary-color);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.challenge-card.math {
    border-left-color: var(--math-color);
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
}

.challenge-card.science {
    border-left-color: var(--science-color);
    background: linear-gradient(135deg, rgba(2, 132, 199, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.challenge-card.engineering {
    border-left-color: var(--engineering-color);
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.05) 0%, rgba(239, 68, 68, 0.05) 100%);
}

.challenge-card.coding {
    border-left-color: var(--coding-color);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

/* Badge styling */
.badge-custom {
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

/* Progress bars */
.progress {
    height: 8px;
    border-radius: 10px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 10px;
    background: linear-gradient(90deg, var(--primary-color) 0%, #0056b3 100%);
}

/* Streak indicator */
.streak-indicator {
    position: relative;
    display: inline-block;
}

.streak-indicator::before {
    content: '🔥';
    position: absolute;
    left: -25px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
}

/* XP display */
.xp-display {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
}

/* Leaderboard styling */
.leaderboard-row {
    transition: background-color 0.2s ease;
}

.leaderboard-row:hover {
    background-color: rgba(0, 123, 255, 0.05);
}

/* Button animations */
.btn {
    transition: all 0.2s ease;
    border-radius: 25px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Form styling */
.form-control {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Alert styling */
.alert {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Navigation styling */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
}

.navbar-brand .logo-img {
    height: 44px;
    width: auto;
    /* Show logo in original colors */
    transition: all 0.3s ease;
    opacity: 1;
    display: block;
    max-width: none;
}

.navbar-brand:hover .logo-img {
    opacity: 1;
    transform: scale(1.05);
    filter: drop-shadow(0 0 8px rgba(0, 0, 0, 0.3));
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.2s ease;
    color: rgba(255, 255, 255, 0.9) !important;
}

.navbar-nav .nav-link:hover {
    color: white !important;
}

/* Footer styling */
footer {
    margin-top: auto;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Body and general styling */
body {
    background-color: var(--bg-secondary);
    color: var(--text-color);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Science-themed elements */
.science-pattern {
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(5, 150, 105, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
}

/* STEM subject icons */
.stem-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin: 0 auto 1rem;
}

.stem-icon.math {
    background: linear-gradient(135deg, var(--math-color) 0%, var(--success-color) 100%);
}

.stem-icon.science {
    background: linear-gradient(135deg, var(--science-color) 0%, var(--info-color) 100%);
}

.stem-icon.engineering {
    background: linear-gradient(135deg, var(--engineering-color) 0%, #f87171 100%);
}

.stem-icon.coding {
    background: linear-gradient(135deg, var(--coding-color) 0%, #a78bfa 100%);
}

/* Enhanced button styling */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--brand-orange) 100%);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 4px 6px rgba(30, 64, 175, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e3a8a 0%, #ea580c 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(30, 64, 175, 0.3);
}

/* Card enhancements */
.card {
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.card-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 12px 0 0 !important;
}

/* Badge enhancements */
.badge {
    border-radius: 6px;
    font-weight: 500;
}

.badge.bg-success {
    background-color: var(--math-color) !important;
}

.badge.bg-info {
    background-color: var(--science-color) !important;
}

.badge.bg-warning {
    background-color: var(--engineering-color) !important;
}

.badge.bg-danger {
    background-color: var(--coding-color) !important;
}

/* Custom outline button colors to match challenge type badges */
.btn-outline-engineering {
    color: var(--engineering-color) !important;
    border-color: var(--engineering-color) !important;
}

.btn-outline-engineering:hover {
    color: #ffffff !important;
    background-color: var(--engineering-color) !important;
    border-color: var(--engineering-color) !important;
}

.btn-outline-coding {
    color: var(--coding-color) !important;
    border-color: var(--coding-color) !important;
}

.btn-outline-coding:hover {
    color: #ffffff !important;
    background-color: var(--coding-color) !important;
    border-color: var(--coding-color) !important;
}

/* Additional Track Color Themes - Inspired by Coolors Pastel Palettes */

/* Vibrant Colors */
.bg-purple {
    background-color: #8b5cf6 !important;
}

.text-purple {
    color: #8b5cf6 !important;
}

.bg-pink {
    background-color: #ec4899 !important;
}

.text-pink {
    color: #ec4899 !important;
}

.bg-orange {
    background-color: #f97316 !important;
}

.text-orange {
    color: #f97316 !important;
}

.bg-teal {
    background-color: #14b8a6 !important;
}

.text-teal {
    color: #14b8a6 !important;
}

.bg-indigo {
    background-color: #6366f1 !important;
}

.text-indigo {
    color: #6366f1 !important;
}

/* Pastel Colors - Inspired by Coolors Pastel Collection */
.bg-lavender {
    background-color: #c4b5fd !important;
}

.text-lavender {
    color: #c4b5fd !important;
}

.bg-mint {
    background-color: #a7f3d0 !important;
}

.text-mint {
    color: #a7f3d0 !important;
}

.bg-peach {
    background-color: #fed7aa !important;
}

.text-peach {
    color: #fed7aa !important;
}

.bg-sky {
    background-color: #bae6fd !important;
}

.text-sky {
    color: #bae6fd !important;
}

.bg-rose {
    background-color: #fecaca !important;
}

.text-rose {
    color: #fecaca !important;
}

.bg-coral {
    background-color: #fbb6ce !important;
}

.text-coral {
    color: #fbb6ce !important;
}

.bg-lime {
    background-color: #d9f99d !important;
}

.text-lime {
    color: #d9f99d !important;
}

.bg-violet {
    background-color: #ddd6fe !important;
}

.text-violet {
    color: #ddd6fe !important;
}

/* Badge text colors for proper contrast */
.badge.bg-purple {
    color: white !important;
}

.badge.bg-pink {
    color: white !important;
}

.badge.bg-orange {
    color: white !important;
}

.badge.bg-teal {
    color: white !important;
}

.badge.bg-indigo {
    color: white !important;
}

.badge.bg-lavender {
    color: #4c1d95 !important; /* Dark purple for contrast */
}

.badge.bg-mint {
    color: #064e3b !important; /* Dark green for contrast */
}

.badge.bg-peach {
    color: #9a3412 !important; /* Dark orange for contrast */
}

.badge.bg-sky {
    color: #0c4a6e !important; /* Dark blue for contrast */
}

.badge.bg-rose {
    color: #991b1b !important; /* Dark red for contrast */
}

.badge.bg-coral {
    color: #be185d !important; /* Dark pink for contrast */
}

.badge.bg-lime {
    color: #365314 !important; /* Dark green for contrast */
}

.badge.bg-violet {
    color: #581c87 !important; /* Dark purple for contrast */
}

/* Gradient variations for track cards */
.bg-gradient-purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #a855f7 100%);
}

.bg-gradient-pink {
    background: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
}

.bg-gradient-orange {
    background: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
}

.bg-gradient-teal {
    background: linear-gradient(135deg, #14b8a6 0%, #2dd4bf 100%);
}

.bg-gradient-indigo {
    background: linear-gradient(135deg, #6366f1 0%, #818cf8 100%);
}

.bg-gradient-lavender {
    background: linear-gradient(135deg, #c4b5fd 0%, #ddd6fe 100%);
}

.bg-gradient-mint {
    background: linear-gradient(135deg, #a7f3d0 0%, #d1fae5 100%);
}

.bg-gradient-peach {
    background: linear-gradient(135deg, #fed7aa 0%, #fed7aa 100%);
}

.bg-gradient-sky {
    background: linear-gradient(135deg, #bae6fd 0%, #e0f2fe 100%);
}

.bg-gradient-rose {
    background: linear-gradient(135deg, #fecaca 0%, #fde2e8 100%);
}

.bg-gradient-coral {
    background: linear-gradient(135deg, #fbb6ce 0%, #fce7f3 100%);
}

.bg-gradient-lime {
    background: linear-gradient(135deg, #d9f99d 0%, #ecfccb 100%);
}

.bg-gradient-violet {
    background: linear-gradient(135deg, #ddd6fe 0%, #ede9fe 100%);
}