/* ===================================
   ORSIF - Radiation Safety FAQs
   Main Stylesheet
   =================================== */

/* CSS Variables for easy theming */
:root {
    /* ORSIF Brand Colors */
    --color-primary: #0d4d5f;          /* Dark teal - ORSIF text color */
    --color-primary-dark: #093a49;     /* Darker teal for hover states */
    --color-primary-light: #6b9dab;    /* Light teal - Shield color */
    --color-secondary: #27ae60;
    --color-accent: #6b9dab;           /* Shield teal as accent */
    --color-warning: #f39c12;

    /* Category Colors */
    --color-cat-radiation: #c0392b;
    --color-cat-exposure: #e74c3c;
    --color-cat-cancer: #9b59b6;
    --color-cat-dna: #8e44ad;
    --color-cat-eye: #3498db;
    --color-cat-ortho: #2980b9;
    --color-cat-women: #e91e63;
    --color-cat-ppe: #27ae60;
    --color-cat-tech: #16a085;
    --color-cat-dosimetry: #1abc9c;
    --color-cat-federal: #f39c12;
    --color-cat-state: #e67e22;
    --color-cat-international: #d35400;
    --color-cat-training: #34495e;
    --color-cat-economic: #2c3e50;
    --color-cat-practices: #0d4d5f;

    /* Neutrals */
    --color-text: #2c3e50;
    --color-text-light: #7f8c8d;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-dark: #ecf0f1;
    --color-border: #dce1e4;

    /* Typography */
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-heading: 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ===================================
   Reset & Base Styles
   =================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

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

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

ul, ol {
    padding-left: var(--spacing-lg);
}

img {
    max-width: 100%;
    height: auto;
}

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

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

section:nth-child(even) {
    background-color: var(--color-bg-alt);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin-bottom: var(--spacing-xl);
}

.hidden {
    display: none !important;
}

/* ===================================
   Navigation
   =================================== */
.main-nav {
    background-color: var(--color-primary);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: white;
    text-decoration: none;
}

.nav-logo img {
    height: 40px;
    max-height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-subtitle {
    font-size: 0.75rem;
    opacity: 0.8;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    padding: 0;
    margin: 0;
}

.nav-links a {
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    background-color: rgba(255,255,255,0.15);
    color: white;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: white;
    transition: all var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.hero-logo {
    margin-bottom: var(--spacing-lg);
}

.hero-logo img {
    max-width: 280px;
    height: auto;
}

.hero h1 {
    font-size: 2.75rem;
    margin-bottom: var(--spacing-lg);
}

.hero .highlight {
    color: var(--color-primary-light);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

/* Search Container */
.search-container {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    position: relative;
}

#faq-search {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    outline: none;
}

#faq-search::placeholder {
    color: var(--color-text-light);
}

#faq-search:focus {
    box-shadow: 0 0 0 3px rgba(107, 157, 171, 0.5), var(--shadow-lg);
}

.clear-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-light);
    cursor: pointer;
    display: none;
    padding: 5px 10px;
}

.clear-btn.visible {
    display: block;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===================================
   Search Results
   =================================== */
.search-results {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-xl) 0;
}

.search-header {
    margin-bottom: var(--spacing-lg);
}

.search-header h2 {
    margin-bottom: var(--spacing-sm);
}

#search-term {
    color: var(--color-primary);
}

#results-count {
    color: var(--color-text-light);
    margin-bottom: 0;
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.result-item {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-primary);
}

.result-item h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

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

.result-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ===================================
   Category Navigation
   =================================== */
.category-nav {
    padding: var(--spacing-xl) 0;
    background-color: white;
}

.category-nav h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

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

.category-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-left: 4px solid var(--color-primary);
    text-decoration: none;
    color: inherit;
}

.category-card:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.category-card:hover .category-count {
    background-color: rgba(255,255,255,0.2);
    color: white;
}

.category-icon {
    font-size: 1.5rem;
    width: 40px;
    text-align: center;
}

.category-info {
    flex: 1;
}

.category-info h4 {
    margin-bottom: 0;
    font-size: 1rem;
}

.category-count {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

/* ===================================
   FAQ Section
   =================================== */
.faq-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
}

.faq-category {
    margin-bottom: var(--spacing-xl);
    scroll-margin-top: 100px;
}

.faq-category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-primary);
}

.faq-category-header h3 {
    margin-bottom: 0;
    flex: 1;
}

.faq-category-header .category-count {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.9rem;
}

/* FAQ Accordion */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    background-color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-bg-alt);
}

.faq-question .question-text {
    flex: 1;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--color-primary);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
}

.faq-answer-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.faq-source {
    font-size: 0.85rem;
    color: var(--color-text-light);
    font-style: italic;
    padding-top: var(--spacing-sm);
    border-top: 1px dashed var(--color-border);
}

/* ===================================
   Key Statistics Section
   =================================== */
.key-stats {
    background-color: white;
    padding: var(--spacing-xxl) 0;
}

.key-stats h2 {
    text-align: center;
}

.key-stats .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    padding: var(--spacing-xl);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    text-align: center;
    border-top: 4px solid var(--color-primary);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-card h3 {
    color: var(--color-text);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.stat-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.stat-card .source {
    font-size: 0.75rem;
    color: var(--color-primary-light);
    font-style: italic;
}

/* ===================================
   Audience Section
   =================================== */
.audience-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-bg-alt);
}

.audience-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.audience-card {
    padding: var(--spacing-lg);
    background-color: white;
    border-radius: var(--radius-md);
    border-top: 4px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.audience-card h3 {
    color: var(--color-primary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.audience-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ===================================
   Resources Section
   =================================== */
.resources-section {
    padding: var(--spacing-xxl) 0;
    background-color: white;
}

.resources-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

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

.quick-link-card {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
    text-decoration: none;
    color: inherit;
}

.quick-link-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    color: inherit;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.quick-link-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.quick-link-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ===================================
   Footer
   =================================== */
.main-footer {
    background-color: var(--color-text);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    max-width: 200px;
    height: auto;
    opacity: 0.9;
}

.footer-section h4 {
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ===================================
   About Page
   =================================== */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: var(--spacing-xl);
}

.about-section h2 {
    color: var(--color-primary);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.warning-box {
    padding: var(--spacing-lg);
    background-color: #fff3cd;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-warning);
}

.warning-box h4 {
    color: #856404;
    margin-bottom: var(--spacing-md);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header .section-intro {
    color: rgba(255,255,255,0.9);
    margin-bottom: 0;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

    .stat-number {
        font-size: 2rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-primary-dark);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: var(--spacing-md);
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .faq-answer-content {
        padding: 0 var(--spacing-md) var(--spacing-md);
        padding-top: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

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

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

    #faq-search {
        padding: var(--spacing-md);
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-xl); }

/* ===================================
   Print Styles
   =================================== */
@media print {
    .main-nav,
    .main-footer,
    .search-container,
    .nav-toggle,
    .category-nav {
        display: none;
    }

    body {
        font-size: 12pt;
        color: black;
    }

    .faq-item {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }

    .faq-answer {
        max-height: none !important;
    }
}

/* ===================================
   Join ORSIF CTA Buttons
   =================================== */
.join-cta {
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.join-cta .btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.join-cta .btn-join {
    background-color: #27ae60;
    color: white;
    border: 2px solid #27ae60;
}

.join-cta .btn-join:hover {
    background-color: #219a52;
    border-color: #219a52;
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hero .join-cta {
    margin-top: var(--spacing-lg);
}

.hero .join-cta .btn-join {
    background-color: #27ae60;
    color: white;
}