/* ============================================
   PQORAX - Museum-Inspired Design System
   Color Palette:
   - Primary: Deep Forest Green (#224229)
   - Secondary: Muted Gold (#B8A066)
   - Accent: Terracotta Orange (#C87C5C)
   - Neutral: Stone Grey (#8C8C8C)
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #224229;
    --color-secondary: #B8A066;
    --color-accent: #C87C5C;
    --color-grey: #8C8C8C;
    --color-light: #F5F3F0;
    --color-white: #FFFFFF;
    --color-dark: #1A1A1A;
    
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    
    --max-width: 1440px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--color-dark);
    background-color: var(--color-light);
    line-height: 1.6;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

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

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    color: var(--color-primary);
    letter-spacing: -1px;
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.75rem;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

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

a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-grey);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.logo a:hover {
    color: var(--color-secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 1rem;
    color: var(--color-dark);
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-secondary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-secondary);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-lg);
    min-height: calc(100vh - 80px - 300px);
}

/* ============================================
   SECTIONS & CONTAINERS
   ============================================ */

.section {
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-xxl) 0;
    border-top: 1px solid var(--color-grey);
}

.section:first-child {
    border-top: none;
    padding-top: 0;
}

.section-title {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

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

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    background: linear-gradient(135deg, rgba(34, 66, 41, 0.7), rgba(184, 160, 102, 0.1)),
                url('/images/hero.jpg') center/cover no-repeat;
    color: var(--color-white);
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    min-height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hero h1 {
    color: var(--color-white);
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.hero p {
    color: var(--color-white);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

/* ============================================
   EXHIBITION PANELS
   ============================================ */

.exhibition-panel {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-grey);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.exhibition-panel.reverse {
    direction: rtl;
}

.exhibition-panel.reverse > * {
    direction: ltr;
}

.panel-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border: 1px solid var(--color-grey);
}

.panel-content h2 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   CARDS
   ============================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-grey);
    padding: var(--spacing-lg);
    transition: var(--transition);
    cursor: pointer;
}

.card:hover {
    box-shadow: 0 8px 16px rgba(34, 66, 41, 0.1);
    transform: scale(1.02);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-grey);
}

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

.card p {
    font-size: 0.95rem;
    color: var(--color-grey);
}

.card-link {
    display: inline-block;
    margin-top: var(--spacing-md);
    color: var(--color-secondary);
    font-weight: 600;
}

.card-link:hover {
    color: var(--color-accent);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
    background-color: transparent;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

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

.btn-accent {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.footer-section p {
    color: var(--color-light);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--color-light);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-section a {
    color: var(--color-light);
}

.footer-section a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--color-light);
}

/* ============================================
   LISTS & CONTENT FORMATTING
   ============================================ */

ul, ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

blockquote {
    border-left: 4px solid var(--color-secondary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--color-grey);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

form {
    max-width: 600px;
    margin: var(--spacing-lg) auto;
}

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

input, textarea, select {
    width: 100%;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-grey);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(184, 160, 102, 0.1);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */

.alert {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid;
    border-radius: 4px;
}

.alert-success {
    background-color: #E8F5E9;
    border-color: #4CAF50;
    color: #2E7D32;
}

.alert-error {
    background-color: #FFEBEE;
    border-color: #F44336;
    color: #C62828;
}

.alert-info {
    background-color: #E3F2FD;
    border-color: #2196F3;
    color: #1565C0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .nav-menu {
        gap: var(--spacing-md);
    }
    
    .exhibition-panel {
        grid-template-columns: 1fr;
    }
    
    .panel-image {
        height: 300px;
    }
    
    .hero {
        min-height: 300px;
        padding: var(--spacing-lg);
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}