/* ===================================
   EduFun - Kids Educational Games
   Main Stylesheet
   =================================== */

/* CSS Variables - Color Palette */
:root {
    --primary: #8B5CF6;
    --primary-light: #A78BFA;
    --primary-dark: #7C3AED;
    --secondary: #EC4899;
    --secondary-light: #F472B6;
    --accent: #14B8A6;
    --accent-light: #2DD4BF;
    --success: #22C55E;
    --success-light: #4ADE80;
    --warning: #F59E0B;
    --error: #EF4444;
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-800: #1F2937;

    --gradient-bg: linear-gradient(135deg, #E0E7FF 0%, #FCE7F3 50%, #FEF3C7 100%);
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-success: linear-gradient(135deg, var(--success) 0%, var(--accent) 100%);

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.4);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    --font-heading: 'Fredoka One', cursive;
    --font-body: 'Nunito', sans-serif;
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 600;
    background: var(--gradient-bg);
    min-height: 100vh;
    color: var(--gray-800);
    overflow-x: hidden;
    position: relative;
}

/* Floating Background Shapes */
.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    font-size: 2rem;
    opacity: 0.6;
    animation: float 15s ease-in-out infinite;
}

.shape-1 {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
    font-size: 2.5rem;
}

.shape-2 {
    top: 20%;
    right: 10%;
    animation-delay: 2s;
    font-size: 3rem;
}

.shape-3 {
    top: 60%;
    left: 8%;
    animation-delay: 4s;
}

.shape-4 {
    top: 80%;
    right: 15%;
    animation-delay: 6s;
    font-size: 2rem;
}

.shape-5 {
    top: 40%;
    left: 85%;
    animation-delay: 8s;
}

.shape-6 {
    top: 5%;
    left: 50%;
    animation-delay: 3s;
    font-size: 2.5rem;
}

.shape-7 {
    top: 70%;
    left: 70%;
    animation-delay: 5s;
    font-size: 2rem;
}

.shape-8 {
    top: 30%;
    left: 20%;
    animation-delay: 7s;
    font-size: 2.5rem;
}

@keyframes float {

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

    25% {
        transform: translateY(-20px) rotate(5deg);
    }

    50% {
        transform: translateY(-10px) rotate(-5deg);
    }

    75% {
        transform: translateY(-25px) rotate(3deg);
    }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* Site Header — shared across all pages */
.site-header {
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 100;
    background: linear-gradient(135deg,
            rgba(139, 92, 246, 0.12) 0%,
            rgba(236, 72, 153, 0.10) 40%,
            rgba(251, 191, 36, 0.10) 70%,
            rgba(20, 184, 166, 0.10) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow:
        0 4px 20px rgba(139, 92, 246, 0.12),
        0 1px 4px rgba(236, 72, 153, 0.08);
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg,
            #8B5CF6, #EC4899, #F59E0B, #14B8A6, #22C55E, #8B5CF6) 1;
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.6rem 2rem;
}

.site-header-logo-link {
    flex: 0 0 52px;
    display: flex;
    align-items: center;
}

.site-header-logo {
    height: 52px;
    filter: drop-shadow(0 3px 8px rgba(139, 92, 246, 0.3));
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.site-header-logo:hover {
    transform: scale(1.15) rotate(-8deg);
}

.site-header-center {
    flex: 1;
    text-align: center;
}

.site-header-title {
    font-family: var(--font-heading);
    font-size: clamp(1.3rem, 3.5vw, 1.85rem);
    background: linear-gradient(135deg, #8B5CF6 0%, #EC4899 50%, #F59E0B 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.header-emoji {
    -webkit-text-fill-color: initial;
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    display: inline-block;
}

.header-emoji-left {
    animation: wiggleEmoji 2.5s ease-in-out infinite;
}

.header-emoji-right {
    animation: wiggleEmoji 2.5s ease-in-out infinite 1.2s;
}

@keyframes wiggleEmoji {

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

    20% {
        transform: rotate(-12deg) scale(1.1);
    }

    40% {
        transform: rotate(8deg) scale(1.05);
    }

    60% {
        transform: rotate(-5deg) scale(1.1);
    }

    80% {
        transform: rotate(3deg) scale(1);
    }
}

.site-header-subtitle {
    font-size: clamp(0.7rem, 2vw, 0.88rem);
    color: var(--primary-dark);
    font-weight: 700;
    opacity: 0.75;
    margin-top: 0.15rem;
    letter-spacing: 0.01em;
}

.site-header-profile {
    flex: 0 0 52px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.profile-icon {
    font-size: 1.6rem;
    opacity: 0.35;
    cursor: default;
    transition: all 0.3s ease;
}

.profile-icon:hover {
    opacity: 0.65;
    transform: scale(1.1);
}

.wave {
    display: inline-block;
    animation: wave 2s ease-in-out infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {

    0%,
    100% {
        transform: rotate(0deg);
    }

    10% {
        transform: rotate(14deg);
    }

    20% {
        transform: rotate(-8deg);
    }

    30% {
        transform: rotate(14deg);
    }

    40% {
        transform: rotate(-4deg);
    }

    50% {
        transform: rotate(10deg);
    }

    60%,
    100% {
        transform: rotate(0deg);
    }
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: var(--primary-dark);
    font-weight: 700;
}

/* Section Titles */
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    text-align: center;
    color: var(--primary-dark);
    margin-bottom: 2rem;
}

/* Category Filters */
.category-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
    padding: 0 1rem;
}

.category-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem 2rem;
    background: var(--white);
    border: 4px solid var(--primary-light);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    font-family: var(--font-body);
    min-width: 140px;
}

.category-btn:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.category-btn:active {
    transform: translateY(-2px) scale(0.98);
}

.category-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--white);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.category-btn-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.category-btn-label {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.category-btn.active .category-btn-label {
    color: var(--white);
}

/* Game Card Age Badge */
.game-card-age-badge {
    background: var(--gray-100);
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 0.3rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

/* No Games Message */
.no-games {
    text-align: center;
    font-size: 1.25rem;
    color: var(--gray-800);
    padding: 3rem;
    grid-column: 1 / -1;
}

/* Games Grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

/* Game Card */
.game-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 4px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.game-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--primary-light);
}

.game-card-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

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

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

.game-card-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.game-card-description {
    font-size: 1.1rem;
    color: var(--gray-800);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.game-card-button {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 800;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.game-card:hover .game-card-button {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Buttons - Shared Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 800;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-success {
    background: var(--gradient-success);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: var(--white);
    color: var(--primary);
    border: 3px solid var(--primary);
    box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

/* Animal Button - for level selection */
.animal-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 140px;
    background: var(--white);
    border: 4px solid var(--primary-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.animal-btn:hover {
    transform: translateY(-8px) scale(1.05);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.animal-btn:active {
    transform: translateY(-2px) scale(0.98);
}

.animal-btn-icon {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
}

.animal-btn-label {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-dark);
}

/* Input Styles */
.input-field {
    font-family: var(--font-body);
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    padding: 1rem 2rem;
    border: 4px solid var(--primary-light);
    border-radius: var(--radius-lg);
    background: var(--white);
    color: var(--gray-800);
    width: 200px;
    transition: all 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

/* Progress Bar */
.progress-container {
    width: 100%;
    max-width: 400px;
    height: 20px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 1rem auto;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

/* Result Item */
.result-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
    box-shadow: var(--shadow-sm);
    font-size: 1.25rem;
}

.result-item.correct {
    border-left: 6px solid var(--success);
}

.result-item.incorrect {
    border-left: 6px solid var(--error);
}

.result-icon {
    font-size: 1.5rem;
}

.result-question {
    flex: 1;
    font-weight: 700;
}

.result-answer {
    font-weight: 800;
}

.result-answer.wrong {
    color: var(--error);
    text-decoration: line-through;
}

.result-correct {
    color: var(--success);
    font-weight: 800;
}

/* Confetti Animation */
@keyframes confetti-fall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

.confetti {
    position: fixed;
    top: -20px;
    font-size: 2rem;
    animation: confetti-fall 4s linear forwards;
    pointer-events: none;
    z-index: 1000;
}

/* Celebration Animation */
@keyframes celebrate {

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

    25% {
        transform: scale(1.1) rotate(-5deg);
    }

    50% {
        transform: scale(1.2);
    }

    75% {
        transform: scale(1.1) rotate(5deg);
    }
}

.celebrate {
    animation: celebrate 0.5s ease-in-out;
}

/* Shake Animation for wrong answers */
@keyframes shake {

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

    20% {
        transform: translateX(-10px);
    }

    40% {
        transform: translateX(10px);
    }

    60% {
        transform: translateX(-10px);
    }

    80% {
        transform: translateX(10px);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Pulse Animation */
@keyframes pulse {

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

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .site-header-inner {
        padding: 0.5rem 1rem;
    }

    .site-header-subtitle {
        display: none;
    }

    .header-emoji {
        display: none;
    }

    .games-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .animal-btn {
        width: 100px;
        height: 120px;
    }

    .animal-btn-icon {
        font-size: 2.5rem;
    }

    .animal-btn-label {
        font-size: 1.25rem;
    }

    .input-field {
        font-size: 2rem;
        width: 150px;
    }
}