/* Themes CSS - Color schemes and theming system */

/* Animation Keyframes */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes wiggle {
    0% { transform: rotate(-3deg); }
    100% { transform: rotate(3deg); }
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Animation Classes */
.animate-bounce {
    animation: bounce 2s infinite;
}

.animate-wiggle {
    animation: wiggle 1s ease-in-out infinite alternate;
}

.animate-twinkle {
    animation: twinkle 2s infinite;
}

.animate-pulse {
    animation: pulse 1s infinite;
}

/* Special Effects */
.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.star {
    position: absolute;
    background: var(--gold-color);
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    animation: twinkle 2s infinite;
}

/* Celebration Overlay */
.celebration-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.celebration-content {
    background: white;
    padding: 50px;
    border-radius: var(--border-radius-xl);
    text-align: center;
    animation: bounce 0.5s ease;
}

.celebration-content h2 {
    color: var(--primary-color);
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.celebration-stars {
    font-size: 4em;
    margin: var(--spacing-md) 0;
    animation: pulse 1s infinite;
}

/* Idle Prompt */
.idle-prompt {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    text-align: center;
    z-index: 1000;
    display: none;
}

.idle-prompt.active {
    display: block;
}

.idle-prompt h3 {
    color: var(--primary-color);
    font-size: 1.8em;
    margin-bottom: 15px;
}

.idle-prompt p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

/* Main Site Specific Themes */
.main-site-container {
    background: linear-gradient(145deg, #ffffff 0%, #f8fbff 100%);
    padding: 40px;
    border-radius: var(--border-radius-round);
    box-shadow: var(--shadow-xl);
    max-width: 900px;
    margin: 0 auto;
    border: 3px solid var(--gold-color);
}

.main-site-title {
    color: var(--pink-color);
    text-align: center;
    margin-bottom: 40px;
    font-size: var(--font-size-4xl);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
    animation: bounce 2s infinite;
}

.topic-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.topic-item {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    border-radius: var(--border-radius-xl);
    padding: 25px;
    transition: var(--transition-normal);
    border: 3px solid #fff;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.topic-item:nth-child(even) {
    background: linear-gradient(135deg, #fd79a8 0%, #e84393 100%);
}

.topic-item:nth-child(3n) {
    background: linear-gradient(135deg, #00b894 0%, #00a085 100%);
}

.topic-item:nth-child(4n) {
    background: linear-gradient(135deg, #fdcb6e 0%, #e17055 100%);
}

.topic-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.topic-link {
    text-decoration: none;
    color: white;
    font-weight: bold;
    font-size: 1.4em;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 60px;
}

.topic-icon {
    margin-right: 15px;
    font-size: var(--font-size-2xl);
    animation: wiggle 1s ease-in-out infinite alternate;
}

.welcome-message {
    text-align: center;
    color: #555;
    font-size: 1.3em;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255,255,255,0.8);
    border-radius: var(--border-radius-lg);
    border: 2px solid #74b9ff;
}

.no-topics {
    text-align: center;
    color: #666;
    font-size: var(--font-size-xl);
    padding: 40px;
    background: #fff3cd;
    border-radius: var(--border-radius-lg);
    border: 2px dashed var(--warning-color);
}

/* Time and Clock Specific Themes */
.clock-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.analog-clock-wrapper {
    text-align: center;
}

#analog-clock {
    box-shadow: var(--shadow-md);
    background: white;
}

.digital-clock-wrapper {
    text-align: center;
}

#digital-clock {
    font-size: var(--font-size-4xl);
    font-family: var(--font-family-mono);
    background: #333;
    color: #00ff00;
    padding: 20px 40px;
    border-radius: var(--border-radius-md);
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.5);
    min-width: 250px;
}

/* Basic Calculation Specific Themes */
.mode-selection {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.question-panel {
    flex: 1;
    background: var(--panel-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.question-display {
    font-size: var(--font-size-4xl);
    color: #333;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.answer-display {
    font-size: 2.5em;
    color: var(--primary-color);
    padding: 15px 30px;
    background: white;
    border: var(--border-width-thick) solid var(--primary-color);
    border-radius: var(--border-radius-md);
    min-width: 200px;
    text-align: center;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.keypad-panel {
    flex: 1;
    background: var(--panel-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
}

/* Responsive Themes - Tablet */
@media (max-width: 1024px) and (min-width: 769px) {
    .main-site-container {
        padding: 30px;
        max-width: 700px;
    }
    
    .main-site-title {
        font-size: 2.5em;
    }
    
    .topic-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .topic-item {
        padding: 20px;
    }
    
    .topic-link {
        font-size: 1.2em;
        min-height: 50px;
    }
    
    .welcome-message {
        font-size: 1.2em;
        padding: 15px;
    }
    
    .mode-selection {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    #analog-clock {
        width: 280px;
        height: 280px;
    }
    
    #digital-clock {
        font-size: 2.2em;
        padding: 18px 30px;
    }
    
    .question-display {
        font-size: 2.5em;
    }
    
    .answer-display {
        font-size: 2em;
    }
}

/* Responsive Themes - Mobile */
@media (max-width: 768px) {
    .main-site-container {
        padding: 20px;
        margin: 10px;
    }
    
    .main-site-title {
        font-size: 2em;
        margin-bottom: 20px;
    }
    
    .topic-list {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .topic-item {
        padding: 20px;
    }
    
    .topic-link {
        font-size: 1.1em;
        min-height: 50px;
    }
    
    .topic-icon {
        font-size: 1.5em;
        margin-right: 10px;
    }
    
    .welcome-message {
        font-size: 1.1em;
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .mode-selection {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .clock-container {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    
    #analog-clock {
        width: 250px;
        height: 250px;
    }
    
    #digital-clock {
        font-size: 1.8em;
        padding: 15px 20px;
        max-width: 280px;
    }
    
    .question-panel {
        padding: 20px;
        min-height: 200px;
    }
    
    .question-display {
        font-size: 2em;
        margin-bottom: 15px;
    }
    
    .answer-display {
        font-size: 1.8em;
        min-height: 60px;
        margin-bottom: 15px;
    }
    
    .keypad-panel {
        padding: 15px;
    }
    
    .celebration-content {
        padding: 30px;
        margin: 20px;
        max-width: 300px;
    }
    
    .celebration-content h2 {
        font-size: 2em;
        margin-bottom: 15px;
    }
    
    .celebration-stars {
        font-size: 3em;
        margin: 15px 0;
    }
}