/* ========================================
   Main CSS - Global Styles
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - Vibrant and Child-Friendly */
    --primary-color: #6C63FF;
    --primary-light: #8B85FF;
    --primary-dark: #5046E5;
    --secondary-color: #FF6B9D;
    --secondary-light: #FF8FB4;
    --accent-yellow: #FFD93D;
    --accent-green: #6BCB77;
    --accent-orange: #FF8C42;
    --accent-cyan: #4ECDC4;

    /* Backgrounds */
    --bg-primary: #FAFBFF;
    --bg-secondary: #F0F3FF;
    --bg-card: #FFFFFF;
    --bg-dark: #1A1A2E;

    /* Text */
    --text-primary: #2D3748;
    --text-secondary: #718096;
    --text-light: #A0AEC0;
    --text-white: #FFFFFF;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(108, 99, 255, 0.1);
    --shadow-md: 0 4px 12px rgba(108, 99, 255, 0.15);
    --shadow-lg: 0 8px 24px rgba(108, 99, 255, 0.2);
    --shadow-xl: 0 12px 40px rgba(108, 99, 255, 0.25);

    /* Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 32px;

    /* Fonts */
    --font-primary: 'Fredoka', sans-serif;
    --font-secondary: 'Comic Neue', cursive;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
}

/* Reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--primary-dark);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.shimmer {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--primary-color);
    border: 2px solid var(--primary-light);
}

.btn-secondary:hover {
    background: var(--primary-light);
    color: var(--text-white);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

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

.btn-full {
    width: 100%;
}

.btn-icon {
    font-size: 1.2em;
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--bg-secondary);
    border-radius: var(--border-radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--text-light);
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xxl);
    max-width: 420px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--bg-secondary);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--secondary-color);
    color: var(--text-white);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.modal-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.form-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--text-secondary);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-cyan));
    border-radius: 4px;
    transition: width var(--transition-normal);
}

/* Mascot */
.mascot-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 900;
}

.mascot-character {
    font-size: 3rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.mascot-character:hover {
    transform: scale(1.1);
}

.mascot-bubble {
    position: absolute;
    bottom: 100%;
    right: 0;
    background: var(--bg-card);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-md);
    max-width: 250px;
}

.mascot-bubble::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: 24px;
    width: 16px;
    height: 16px;
    background: var(--bg-card);
    transform: rotate(45deg);
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: toastSlideIn 0.3s ease;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-success {
    border-left: 4px solid var(--accent-green);
}

.toast-error {
    border-left: 4px solid var(--secondary-color);
}

.toast-info {
    border-left: 4px solid var(--primary-color);
}

/* Loading */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xxl);
}

.loader {
    text-align: center;
}

.loader .book-emoji {
    font-size: 4rem;
    display: block;
    animation: bounce 1s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* Responsive */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .modal-content {
        padding: var(--spacing-lg);
        margin: var(--spacing-md);
    }
}