/* ==========================================
   BALL PYTHON MORPH CALCULATOR - STYLES
   Modern, Premium Dark Theme Design
   ========================================== */

/* ==========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================== */
:root {
    /* Primary Colors - Snake-inspired palette */
    --primary-green: hsl(120, 65%, 45%);
    --primary-yellow: hsl(35, 85%, 55%);
    --accent-orange: hsl(25, 90%, 60%);

    /* Dark Theme Backgrounds */
    --bg-dark: hsl(220, 15%, 10%);
    --bg-card: hsl(220, 15%, 15%);
    --bg-card-hover: hsl(220, 15%, 18%);
    --bg-input: hsl(220, 15%, 12%);

    /* Text Colors */
    --text-primary: hsl(0, 0%, 95%);
    --text-secondary: hsl(0, 0%, 70%);
    --text-tertiary: hsl(0, 0%, 50%);

    /* Genetics Type Colors */
    --recessive: hsl(210, 80%, 55%);
    --codominant: hsl(280, 70%, 60%);
    --dominant: hsl(340, 75%, 55%);

    /* Status Colors */
    --success: hsl(140, 70%, 50%);
    --warning: hsl(45, 95%, 55%);
    --danger: hsl(0, 75%, 55%);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Font Sizes (fluid typography) */
    --fs-hero: clamp(2.5rem, 5vw, 4rem);
    --fs-h1: clamp(2rem, 4vw, 3rem);
    --fs-h2: clamp(1.5rem, 3vw, 2.25rem);
    --fs-h3: clamp(1.25rem, 2.5vw, 1.75rem);
    --fs-body: clamp(1rem, 1.5vw, 1.125rem);
    --fs-small: clamp(0.875rem, 1.25vw, 1rem);

    /* 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: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-body);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    background-image:
        radial-gradient(at 0% 0%, rgba(120, 200, 80, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(255, 165, 60, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: var(--fs-h1);
}

h2 {
    font-size: var(--fs-h2);
}

h3 {
    font-size: var(--fs-h3);
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--primary-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-yellow);
}

/* ==========================================
   LAYOUT & CONTAINERS
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-2xl) 0;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(120, 200, 80, 0.1), rgba(255, 165, 60, 0.1));
}

.hero-title {
    font-size: var(--fs-hero);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-green), var(--primary-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: var(--fs-body);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    animation: fadeInUp 1s ease;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn-primary,
.btn-calculate,
.btn-reset {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--fs-body);
    font-weight: 600;
    font-family: var(--font-heading);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-yellow));
    color: var(--bg-dark);
    box-shadow: 0 8px 24px rgba(120, 200, 80, 0.3);
    animation: fadeInUp 1.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(120, 200, 80, 0.4);
}

.btn-calculate {
    background: linear-gradient(135deg, var(--primary-green), var(--accent-orange));
    color: white;
    box-shadow: 0 6px 20px rgba(120, 200, 80, 0.3);
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(120, 200, 80, 0.4);
}

.btn-reset {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
}

.btn-reset:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-yellow);
}

/* ==========================================
   SECTION TITLES
   ========================================== */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-yellow));
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   CALCULATOR SECTION
   ========================================== */
.calculator-section {
    background: var(--bg-dark);
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

/* Parent Cards - Glassmorphism */
.parent-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.parent-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    border-color: var(--primary-green);
}

.parent-title {
    color: var(--primary-green);
    margin-bottom: var(--spacing-md);
    font-size: var(--fs-h3);
}

/* Morph Selector */
.morph-selector label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--fs-small);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.morph-select {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-sm);
    font-size: var(--fs-body);
    font-family: var(--font-body);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.morph-select:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(120, 200, 80, 0.1);
}

.morph-select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.selected-morphs {
    margin-top: var(--spacing-sm);
    min-height: 40px;
}

.morph-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-card);
    border: 1px solid var(--primary-green);
    border-radius: var(--radius-xl);
    margin: var(--spacing-xs);
    font-size: var(--fs-small);
    color: var(--text-primary);
}

.morph-tag .remove-morph {
    cursor: pointer;
    color: var(--danger);
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.morph-tag .remove-morph:hover {
    transform: scale(1.2);
}

/* Calculator Actions */
.calculator-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

/* ==========================================
   RESULTS SECTION
   ========================================== */
.results-container {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    animation: fadeIn 0.5s ease;
}

.results-title {
    color: var(--primary-yellow);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.result-card {
    background: var(--bg-card);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.result-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-green);
    box-shadow: 0 8px 24px rgba(120, 200, 80, 0.2);
}

.result-morph-name {
    font-size: var(--fs-h3);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.result-percentage {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.result-description {
    font-size: var(--fs-small);
    color: var(--text-secondary);
}

/* Health Warnings */
.health-warnings {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 75, 75, 0.1);
    border: 2px solid var(--danger);
    border-radius: var(--radius-md);
    animation: pulse 2s infinite;
}

.warning-title {
    color: var(--danger);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.warning-content {
    color: var(--text-primary);
}

.warning-content p {
    margin-bottom: var(--spacing-xs);
}

/* ==========================================
   GENETICS GUIDE SECTION
   ========================================== */
.genetics-guide {
    background: linear-gradient(180deg, var(--bg-dark), rgba(120, 200, 80, 0.05));
}

.guide-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.guide-article {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.guide-article h3 {
    color: var(--primary-yellow);
    margin-bottom: var(--spacing-md);
}

.guide-article h4 {
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.guide-article p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.inheritance-type {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-xl);
    font-size: var(--fs-small);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-recessive {
    background: var(--recessive);
    color: white;
}

.badge-codominant {
    background: var(--codominant);
    color: white;
}

.badge-dominant {
    background: var(--dominant);
    color: white;
}

.genetic-formula {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-dark);
    border-left: 4px solid var(--primary-green);
    border-radius: var(--radius-sm);
}

.genetic-formula code {
    color: var(--primary-yellow);
    font-family: 'Courier New', monospace;
    font-size: var(--fs-small);
}

/* ==========================================
   FAQ SECTION
   ========================================== */
.faq-section {
    background: var(--bg-dark);
}

.faq-grid {
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--primary-green);
    transform: translateX(4px);
}

.faq-question {
    color: var(--primary-green);
    margin-bottom: var(--spacing-sm);
    font-size: var(--fs-h3);
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-text {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.disclaimer {
    color: var(--text-tertiary);
    font-size: var(--fs-small);
    max-width: 800px;
    margin: 0 auto var(--spacing-sm);
    font-style: italic;
}

.copyright {
    color: var(--text-tertiary);
    font-size: var(--fs-small);
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 75, 75, 0.4);
    }

    50% {
        box-shadow: 0 0 0 10px rgba(255, 75, 75, 0);
    }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    .hero {
        min-height: 50vh;
        padding: var(--spacing-xl) 0;
    }

    .calculator-grid {
        grid-template-columns: 1fr;
    }

    .calculator-actions {
        flex-direction: column;
    }

    .calculator-actions button {
        width: 100%;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    section {
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ==========================================
   ACCESSIBILITY
   ========================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

*:focus-visible {
    outline: 3px solid var(--primary-green);
    outline-offset: 2px;
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}