/* Smarty Learn - Shared Styles */

/* === CSS Variables === */
:root {
    /* Math Theme Colors */
    --math-primary: #FF6B9D;
    --math-secondary: #FEC260;
    --math-tertiary: #5DADE2;

    /* German Theme Colors */
    --german-primary: #9B59B6;
    --german-secondary: #3498DB;
    --german-tertiary: #E74C3C;

    /* Common Colors */
    --success: #2ECC71;
    --bg-light: #FFF9F0;
    --bg-card: #FFFFFF;
    --text-dark: #2C3E50;
}

/* === Global Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* === Body & Background === */
body {
    font-family: 'Nunito', sans-serif;
    min-height: 100vh;
    padding: 2rem;
    color: var(--text-dark);
    position: relative;
    overflow-x: hidden;
}

/* Playful background elements */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    opacity: 0.08;
    z-index: 0;
    pointer-events: none;
}

body::before {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation: float 20s infinite ease-in-out;
}

body::after {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation: float 15s infinite ease-in-out reverse;
}

/* === Layout === */
.container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* === Header === */
header {
    text-align: center;
    margin-bottom: 3rem;
    animation: slideDown 0.8s ease-out;
}

h1 {
    font-family: 'Fredoka', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-dark);
    opacity: 0.8;
}

/* === Cards === */
.card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    border: 3px solid;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.card::before {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 2rem;
    opacity: 0.3;
}

/* === Forms === */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 1.1rem;
}

select, input[type="number"], input[type="range"] {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 3px solid;
    border-radius: 16px;
    font-size: 1rem;
    font-family: 'Nunito', sans-serif;
    transition: all 0.3s ease;
    background: white;
}

select:focus, input:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.number-input {
    max-width: 200px;
}

/* === Buttons === */
button {
    width: 100%;
    padding: 1.25rem 2rem;
    border: none;
    border-radius: 16px;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'Fredoka', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    color: white;
    margin-top: 1rem;
}

button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

button:hover::before {
    width: 300px;
    height: 300px;
}

button:hover {
    transform: translateY(-3px);
}

button:active {
    transform: translateY(-1px);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-back {
    position: fixed;
    top: 1rem;
    left: 1rem;
    background: white;
    padding: 0.75rem 1.5rem;
    border: 2px solid;
    border-radius: 25px;
    font-family: 'Fredoka', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.btn-back:hover {
    transform: translateX(-5px);
}

/* === Celebrations === */
.milestone-celebration {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    background: linear-gradient(135deg, var(--success), #82E0AA);
    color: white;
    padding: 2rem 3rem;
    border-radius: 24px;
    font-family: 'Fredoka', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    z-index: 10000;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    opacity: 0;
}

.milestone-celebration.show {
    animation: milestoneShow 1.5s ease-out forwards;
}

.celebrating {
    animation: celebrate 0.6s ease-in-out;
}

/* === Fireworks === */
.fireworks-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    display: none;
}

.fireworks-container.active {
    display: block;
}

.firework {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    animation: fireworkFly 1s ease-out forwards;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: particleExplode 1s ease-out forwards;
}

/* === Preview Section === */
.preview {
    display: none;
}

.preview.active {
    display: block;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px dashed;
}

.preview-title {
    font-family: 'Fredoka', sans-serif;
    font-size: 1.8rem;
}

.task-count {
    background: var(--success);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1.1rem;
}

/* === Slider Container === */
.slider-container {
    margin: 1rem 0;
}

.slider-value {
    display: inline-block;
    min-width: 60px;
    font-weight: 700;
    color: var(--text-dark);
    font-size: 1.2rem;
    text-align: center;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

input[type="range"] {
    padding: 0;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, #82E0AA 0%, #F39C12 50%, #E74C3C 100%);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--success);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--success);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* === Checkbox === */
.checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: linear-gradient(135deg, #E8F8F5 0%, #D5F4E6 100%);
    border-radius: 12px;
    border: 2px dashed var(--success);
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.2);
}

.checkbox-container input[type="checkbox"] {
    width: 24px;
    height: 24px;
    cursor: pointer;
    accent-color: var(--success);
}

.checkbox-label {
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    user-select: none;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .card {
        padding: 1.5rem;
    }

    .btn-back {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    header {
        margin-top: 3rem; /* Extra space on mobile for back button */
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .milestone-celebration {
        font-size: 1.5rem;
        padding: 1.5rem 2rem;
    }
}

/* === Footer === */
footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
    border-top: 2px solid rgba(0,0,0,0.1);
    font-size: 0.9rem;
    opacity: 0.8;
}

footer p {
    margin-bottom: 0.75rem;
}

footer a {
    text-decoration: none;
    margin: 0 0.5rem;
    transition: opacity 0.3s ease;
}

footer a:hover {
    opacity: 0.7;
}

/* === Crown Counter (Achievement System) === */
.crown-counter {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    padding: 12px 20px;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1000;
    animation: fadeIn 0.5s ease-out, bounceIn 0.6s ease-out;
    transition: transform 0.3s ease;
}

.crown-counter:hover {
    transform: scale(1.05);
}

.crown-icon {
    font-size: 28px;
    line-height: 1;
    animation: gentle-bounce 2s ease-in-out infinite;
}

.crown-count {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    min-width: 30px;
    text-align: center;
}

/* Crown earn animation */
@keyframes crown-earn {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3) rotate(10deg);
    }
    100% {
        transform: scale(1);
    }
}

.crown-counter.earn {
    animation: crown-earn 0.6s ease-out;
}

/* Gentle bounce for crown icon */
@keyframes gentle-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-3px);
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .crown-counter {
        top: 10px;
        right: 10px;
        padding: 10px 16px;
    }

    .crown-icon {
        font-size: 24px;
    }

    .crown-count {
        font-size: 18px;
        min-width: 25px;
    }
}