/* Brand Colors and Fonts */
:root {
    /* Brand Color Palette */
    --brand-teal-primary: #0f3a41;    /* #0f3a41 from your palette */
    --brand-teal-secondary: #097677;   /* #097677 from your palette */
    --brand-teal-accent: #29a6ab;      /* #29a6ab from your palette */
    --brand-orange-primary: #c05415;   /* #c05415 from your palette */
    --brand-orange-secondary: #893808; /* #893808 from your palette */
    --brand-cream: #debbc8;            /* #debbc8 from your palette */

    /* Semantic Colors */
    --color-primary: var(--brand-teal-secondary);
    --color-secondary: var(--brand-orange-primary);
    --color-accent: var(--brand-teal-accent);
    --color-background: #fefefe;
    --color-surface: #ffffff;
    --color-text-primary: var(--brand-teal-primary);
    --color-text-secondary: #626262;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: var(--brand-orange-primary);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(15, 58, 65, 0.1);
    --shadow-md: 0 4px 16px rgba(15, 58, 65, 0.15);
    --shadow-lg: 0 8px 32px rgba(15, 58, 65, 0.2);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(45deg, #0c4f4e, #032731);
    color: #333;
    line-height: 1.6;
}

header {
    background: #ffffffee;
    color: #111;
    padding: 1rem;
    text-align: center;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.subtitle {
    font-size: 1.1rem;
    color: #ffffffee;
    max-width: 800px;
    margin: 0 auto;
}

.divider {
    height: 4px;
    background: linear-gradient(90deg, #032731, #0c4f4e, #f5d363);
    margin: 0;
}

/* Main Question Section */
.main-question {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--brand-teal-primary), var(--brand-teal-secondary));
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: var(--shadow-lg);
}

.main-question h1 {
    font-family: var(--font-playful);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 600;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 3D Drug Models Section */
.drug-models {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.model-container {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.model-container:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.aspirin-model {
    border-color: var(--brand-orange-primary);
}

.ibuprofen-model {
    border-color: var(--brand-teal-accent);
}

.model-container h2 {
    font-family: var(--font-playful);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.duration-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 2rem;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    color: white;
}

.aspirin-badge {
    background: var(--brand-orange-primary);
}

.ibuprofen-badge {
    background: var(--brand-teal-accent);
}

/* 3D Model Viewer Styling */
model-viewer {
    width: 100%;
    height: 300px;
    border-radius: var(--radius-md);
    background-color: #f8fafc;
}

/* Question Sections */
.question-section {
    margin-bottom: var(--spacing-2xl);
    animation: slideInUp 0.6s ease-out;
}

.question-section.hidden {
    display: none;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.question-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border-left: 6px solid var(--color-primary);
}

.question-card h3 {
    font-family: var(--font-playful);
    font-size: 1.6rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.question-card p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

/* Flourish Charts */
.flourish-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.chart-container h4 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    font-family: var(--font-clean);
}

.chart-placeholder {
    background: #f1f5f9;
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.placeholder-chart {
    width: 80%;
    height: 120px;
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
}

.aspirin-chart {
    background: linear-gradient(45deg, var(--brand-orange-primary), var(--brand-orange-secondary));
}

.ibuprofen-chart {
    background: linear-gradient(45deg, var(--brand-teal-accent), var(--brand-teal-secondary));
}

/* Drug Structures */
.drug-structures {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

/* Hover zoom effect for structure images */
.structure-image {
    width: 100%;
    max-width: 400px; /* Increased from 300px */
    height: auto;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: zoom-in;
}

.structure-image:hover {
    transform: scale(1.3); /* Zoom to 130% on hover */
    box-shadow: var(--shadow-lg);
    z-index: 10;
    position: relative;
}

/* Container adjustments to handle zoom overflow */
.structure-container {
    text-align: center;
    background: #f8fafc;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid #e2e8f0;
    overflow: visible; /* Allow zoom to extend beyond container */
    position: relative;
}

.structure-container h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    font-family: var(--font-clean);
}

.interaction-legend {
    text-align: left;
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-sm);
    border: 1px solid #e2e8f0;
}

.interaction-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.interaction-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    display: inline-block;
}

.covalent { background: #22c55e; }
.hydrogen { background: #fbbf24; }
.van-der-waals { background: #3b82f6; }
.pi-pi-stacking { background: #8b5cf6; }
.ionic { background: #ef4444; }

/* Hypothesis Buttons */
.hypothesis-buttons {
    display: grid;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.hypothesis-btn {
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    font-family: var(--font-primary);
    position: relative;
    overflow: hidden;
}

.hypothesis-btn:hover {
    background: rgba(9, 118, 119, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hypothesis-btn.selected {
    background: var(--color-primary);
    color: white;
}

.hypothesis-btn.correct {
    border-color: var(--color-success);
    background: #0f3a41;
}

.hypothesis-btn.incorrect {
    border-color: var(--color-error);
    background: #893808;
}

.hypothesis-label {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.hypothesis-btn.selected .hypothesis-label {
    color: white;
}

.hypothesis-text {
    display: block;
    font-size: 1rem;
    line-height: 1.5;
}

/* Feedback */
.feedback {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    display: none;
}

.feedback.show {
    display: block;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.feedback.correct {
    background: rgba(34, 197, 94, 0.1);
    border-left: 4px solid var(--color-success);
    color: #166534;
}

.feedback.incorrect {
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--color-error);
    color: #991b1b;
}

/* Reflection Section */
.reflection-section {
    margin-top: var(--spacing-2xl);
}

.reflection-section.hidden {
    display: none;
}

.reflection-card {
    background: linear-gradient(135deg, var(--brand-cream), #f8fafc);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--brand-teal-accent);
}

.reflection-card h3 {
    font-family: var(--font-playful);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    text-align: center;
}

.key-insight {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
    border-left: 6px solid var(--color-success);
    box-shadow: var(--shadow-sm);
}

.key-insight h4 {
    color: var(--color-success);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-clean);
}

.reflection-prompt {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.prompt-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.reflection-considerations {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: #f8fafc;
    border-radius: var(--radius-sm);
}

.reflection-considerations h5 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.reflection-considerations ul {
    margin-left: var(--spacing-lg);
}

.reflection-considerations li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
}

.reflection-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    resize: vertical;
    min-height: 120px;
    margin-bottom: var(--spacing-md);
    transition: border-color 0.3s ease;
}

.reflection-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(9, 118, 119, 0.1);
}

.submit-reflection-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.submit-reflection-btn:hover {
    background: var(--brand-teal-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .drug-models,
    .flourish-charts,
    .drug-structures {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .main-question {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .question-card,
    .reflection-card {
        padding: var(--spacing-lg);
    }

    model-viewer {
        height: 250px;
    }

    .structure-image {
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .hypothesis-buttons {
        gap: var(--spacing-md);
    }

    .hypothesis-btn {
        padding: var(--spacing-md);
    }

    .main-question h1 {
        font-size: 1.5rem;
    }

    .question-card h3 {
        font-size: 1.4rem;
    }
}

/* Loading and Animation States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.slide-in-next {
    animation: slideInFromRight 0.6s ease-out;
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
.hypothesis-btn:focus,
.submit-reflection-btn:focus,
.reflection-input:focus {
    outline: 3px solid rgba(9, 118, 119, 0.4);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .hypothesis-btn,
    .submit-reflection-btn {
        border: 2px solid var(--color-primary);
        background: transparent !important;
        color: var(--color-primary) !important;
    }
}

footer {
    background: #fff !important;
    color: #000000 !important;
    padding: 1rem;
    text-align: center;
}

footer a {
    color: #000000 !important;
    text-decoration: underline;
    font-weight: 600;
}

footer a:hover {
    color: #0c4f4e !important;
    text-decoration: underline;
}