/* Интерактивная лаборатория химии - стили */

:root {
    --primary-blue: #3b82f6;
    --secondary-purple: #8b5cf6;
    --success-green: #10b981;
    --warning-orange: #f59e0b;
    --danger-red: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* Навигация */
.nav-btn {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 500;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    color: var(--primary-blue);
    background-color: var(--gray-50);
}

.nav-btn.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
    background-color: var(--gray-50);
}

/* Вкладки контента */
.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Карточки теории */
.theory-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-blue);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.theory-card:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Молекулярная визуализация */
.molecular-viz {
    width: 100%;
    height: 120px;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
}

.solid-state {
    background: linear-gradient(45deg, #3b82f6 0%, #1e40af 100%);
}

.liquid-state {
    background: linear-gradient(45deg, #10b981 0%, #047857 100%);
}

.gas-state {
    background: linear-gradient(45deg, #ef4444 0%, #dc2626 100%);
}

/* Частицы в молекулярной визуализации */
.molecule {
    position: absolute;
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    opacity: 0.8;
}

/* Карточки фазовых переходов */
.transition-card {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.transition-card:hover {
    transform: translateY(-5px);
}

/* Контейнер вещества в симуляции */
.substance-container {
    position: relative;
    width: 100%;
    height: 300px;
    background: linear-gradient(to bottom, #e0f2fe, #b3e5fc);
    border-radius: 12px;
    overflow: hidden;
    border: 3px solid #01579b;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

.substance-visual {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, #4fc3f7, #29b6f6);
    transition: all 0.5s ease;
}

/* Индикатор температуры */
.temperature-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
}

/* Контейнер частиц */
.particles-container {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    opacity: 0.8;
    transition: all 0.3s ease;
}

/* Состояния вещества */
.substance-visual.solid {
    background: linear-gradient(to bottom, #bbdefb, #90caf9);
}

.substance-visual.liquid {
    background: linear-gradient(to bottom, #4fc3f7, #29b6f6);
}

.substance-visual.gas {
    background: linear-gradient(to bottom, #ffcdd2, #ef9a9a);
}

/* Бейдж состояния */
.state-badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

.state-badge.solid {
    background: #dbeafe;
    color: #1e40af;
}

.state-badge.liquid {
    background: #d1fae5;
    color: #065f46;
}

.state-badge.gas {
    background: #fed7d7;
    color: #991b1b;
}

/* Слайдер температуры */
.slider {
    background: linear-gradient(to right, #3b82f6, #ef4444);
}

.slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    cursor: pointer;
}

/* Установка экспериментов */
.experiment-setup {
    background: var(--gray-50);
    border-radius: 12px;
    padding: 1.5rem;
    border: 2px dashed var(--gray-200);
}

/* Панель управления */
.controls-panel {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

/* Кнопки */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-danger {
    background: var(--danger-red);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* Статус эксперимента */
.experiment-status {
    background: var(--gray-100);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
}

.experiment-status.running {
    background: #dbeafe;
    color: #1e40af;
}

.experiment-status.completed {
    background: #d1fae5;
    color: #065f46;
}

/* Формы протокола */
.form-input, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Шаги процедуры */
.procedure-step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: flex-start;
}

.step-number {
    background: var(--primary-blue);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.step-description {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-family: inherit;
    resize: vertical;
    min-height: 50px;
}

/* Анимации частиц */
@keyframes solidVibration {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(1px, -1px); }
    50% { transform: translate(-1px, 1px); }
    75% { transform: translate(1px, 1px); }
}

@keyframes liquidFlow {
    0% { transform: translateX(0); }
    50% { transform: translateX(10px); }
    100% { transform: translateX(0); }
}

@keyframes gasMovement {
    0% { transform: translate(0, 0); }
    25% { transform: translate(20px, -15px); }
    50% { transform: translate(-10px, -20px); }
    75% { transform: translate(-15px, 10px); }
    100% { transform: translate(0, 0); }
}

/* Состояния частиц */
.particle.solid {
    animation: solidVibration 2s infinite linear;
}

.particle.liquid {
    animation: liquidFlow 3s infinite ease-in-out;
}

.particle.gas {
    animation: gasMovement 1.5s infinite linear;
}

/* Пузырьки кипения */
.bubble {
    position: absolute;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    animation: bubble-rise 2s infinite ease-out;
}

@keyframes bubble-rise {
    0% {
        transform: translateY(0) scale(0.5);
        opacity: 1;
    }
    100% {
        transform: translateY(-200px) scale(1.2);
        opacity: 0;
    }
}

/* Адаптивность */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .controls-panel {
        flex-direction: column;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .nav-btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
}

/* Эффект загрузки */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Печать */
@media print {
    header, nav, .controls-panel {
        display: none !important;
    }
    
    .tab-content {
        display: block !important;
    }
    
    body {
        background: white;
    }
}