/* Components CSS - Reusable UI components library */

/* Header Component */
header {
    background: var(--card-bg);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Navigation Components */
.nav-links {
    display: flex;
    gap: 15px;
}

.nav-link {
    background: var(--secondary-color);
    color: var(--primary-color);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
    font-weight: bold;
    transition: var(--transition-normal);
}

.nav-link:hover {
    background: var(--primary-color);
    color: white;
}

.activity-nav {
    display: flex;
    gap: 15px;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.nav-btn {
    background: white;
    border: var(--border-width-thick) solid var(--primary-color);
    padding: 15px 25px;
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-md);
    font-weight: bold;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition-normal);
}

.nav-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(94, 114, 228, 0.3);
}

.nav-btn.active {
    background: var(--primary-color);
    color: white;
}

/* Button System */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-md);
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-normal);
    margin: 10px;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(94, 114, 228, 0.3);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--primary-color);
    border: var(--border-width) solid var(--primary-color);
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-normal);
    margin: 10px;
}

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

/* Card System */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: var(--spacing-md);
}

.card h2 {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.mode-card {
    background: white;
    border: var(--border-width-thick) solid var(--primary-color);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    text-align: center;
    transition: var(--transition-normal);
    cursor: pointer;
}

.mode-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(94, 114, 228, 0.3);
}

.mode-card h3 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    margin-bottom: 15px;
}

.mode-card .icon {
    font-size: var(--font-size-4xl);
    margin-bottom: 15px;
}

.time-card {
    background: var(--panel-bg);
    border: var(--border-width-thick) solid var(--primary-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.time-card:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(94, 114, 228, 0.3);
    background: #e3f2fd;
}

.time-card.selected {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(94, 114, 228, 0.4);
}

.time-card.correct {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.time-card.incorrect {
    background: var(--error-color);
    border-color: var(--error-color);
    color: white;
}

/* Activity Panel */
.activity-panel {
    background: white;
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    display: none;
}

.activity-panel.active {
    display: block;
}

.activity-panel h2 {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

/* Score Display */
.score-display {
    background: var(--gold-color);
    padding: 10px 20px;
    border-radius: var(--border-radius-round);
    font-size: var(--font-size-xl);
    font-weight: bold;
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
}

/* Feedback Component */
.feedback {
    margin: var(--spacing-md) 0;
    padding: 15px;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-lg);
    font-weight: bold;
    text-align: center;
    display: none;
}

.feedback.correct {
    background: #d4edda;
    color: #155724;
    border: 2px solid var(--success-color);
    display: block;
}

.feedback.incorrect {
    background: #f8d7da;
    color: #721c24;
    border: 2px solid var(--error-color);
    display: block;
}

/* Quiz Components */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding: 15px;
    background: var(--panel-bg);
    border-radius: var(--border-radius-md);
}

.question-counter {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--primary-color);
}

.quiz-timer {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: #333;
}

.quiz-question {
    font-size: 1.8em;
    text-align: center;
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: var(--bg-gradient);
    color: white;
    border-radius: var(--border-radius-lg);
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quiz-question h3 {
    color: white;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.quiz-option {
    background: white;
    border: var(--border-width-thick) solid var(--primary-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: 1.3em;
    cursor: pointer;
    transition: var(--transition-normal);
    text-align: center;
}

.quiz-option:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.quiz-option.selected {
    background: var(--primary-color);
    color: white;
}

.quiz-option.correct {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

.quiz-option.incorrect {
    background: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.quiz-results {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--panel-bg);
    border-radius: var(--border-radius-lg);
}

.quiz-results h3 {
    color: var(--primary-color);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

/* Keypad Components */
.keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 400px;
    margin: 0 auto;
}

.keypad-btn {
    padding: 25px;
    font-size: 1.8em;
    font-weight: bold;
    background: white;
    border: var(--border-width-thick) solid var(--primary-color);
    border-radius: var(--border-radius-md);
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition-fast);
    min-height: 70px;
}

.keypad-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.keypad-btn:active {
    transform: scale(0.95);
}

.keypad-btn.zero {
    grid-column: 1 / 3;
}

.keypad-btn.clear {
    background: var(--orange-color);
    border-color: var(--orange-color);
    color: white;
}

.keypad-btn.clear:hover {
    background: #e68900;
}

.keypad-btn.backspace {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
}

.keypad-btn.backspace:hover {
    background: #da190b;
}

.keypad-btn.ok {
    background: #4caf50;
    border-color: #4caf50;
    color: white;
    grid-column: 1 / 4;
    font-size: var(--font-size-xl);
}

.keypad-btn.ok:hover {
    background: #45a049;
}

.keypad-btn.ok:disabled {
    background: #ccc;
    border-color: #ccc;
    cursor: not-allowed;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 30px;
    background: #e0e0e0;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin: var(--spacing-md) 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4caf50, #8bc34a);
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Form Elements */
.difficulty-options {
    margin: 15px 0;
}

.difficulty-options label {
    display: block;
    margin: 10px 0;
    font-size: var(--font-size-md);
}

.difficulty-options input[type="radio"] {
    margin-right: 10px;
    transform: scale(1.5);
}

.difficulty-options select {
    width: 100%;
    padding: 10px;
    font-size: var(--font-size-md);
    border: var(--border-width) solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    background: white;
}

/* Table Components */
.history-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.history-table th,
.history-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.history-table th {
    background: var(--primary-color);
    color: white;
}

.history-table tr:hover {
    background: var(--secondary-color);
}

/* Responsive Styles - Tablet */
@media (max-width: 1024px) and (min-width: 769px) {
    header {
        padding: 15px;
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .nav-links {
        justify-content: center;
    }
    
    .nav-link {
        padding: 12px 20px;
        font-size: 1em;
    }
    
    .card {
        padding: 25px;
    }
    
    .quiz-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .btn-primary, .btn-secondary {
        min-height: 44px;
        padding: 12px 20px;
    }
    
    .mode-card {
        padding: 20px;
    }
    
    .keypad {
        max-width: 350px;
        gap: 8px;
    }
    
    .keypad-btn {
        padding: 20px;
        font-size: 1.6em;
        min-height: 65px;
    }
}

/* Responsive Styles - Mobile */
@media (max-width: 768px) {
    header {
        padding: 15px;
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .nav-links {
        flex-direction: row;
        justify-content: center;
        gap: 10px;
        flex-wrap: wrap;
    }
    
    .nav-link {
        padding: 10px 15px;
        font-size: 0.9em;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .card {
        padding: 20px;
        margin-bottom: 15px;
    }
    
    .quiz-header {
        flex-direction: column;
        gap: 8px;
        text-align: center;
        padding: 12px;
    }
    
    .question-counter, .quiz-timer {
        font-size: 1.1em;
    }
    
    .btn-primary, .btn-secondary {
        min-height: 44px;
        padding: 12px 20px;
        font-size: 1em;
        margin: 8px 5px;
    }
    
    .score-display {
        padding: 15px;
        margin: 15px 0;
    }
    
    .score-display p {
        font-size: 1.3em;
        margin: 8px 0;
    }
    
    .feedback {
        padding: 12px;
        font-size: 1.1em;
        margin: 15px 0;
    }
    
    .mode-card {
        padding: 20px;
    }
    
    .mode-card h3 {
        font-size: 1.4em;
        margin-bottom: 15px;
    }
    
    .quiz-options {
        grid-template-columns: 1fr;
        gap: 10px;
        margin: 15px 0;
    }
    
    .keypad {
        max-width: 100%;
        gap: 8px;
    }
    
    .keypad-btn {
        padding: 15px;
        font-size: 1.4em;
        min-height: 55px;
    }
    
    .keypad-btn.ok {
        font-size: 1.3em;
    }
    
    .progress-bar {
        height: 25px;
        margin: 15px 0;
    }
    
    .progress-fill {
        font-size: 0.9em;
    }
    
    .history-table th,
    .history-table td {
        padding: 8px 6px;
        font-size: 0.9em;
    }
}