/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */
:root {
    --color-primary: #FF670D;
    --color-primary-dark: #E55D0C;
    --color-primary-light: #FF8A3B;
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f1f3f4;
    --color-gray-200: #e8eaed;
    --color-gray-300: #dadce0;
    --color-gray-400: #9aa0a6;
    --color-gray-500: #5f6368;
    --color-gray-600: #3c4043;
    --color-gray-700: #202124;
    --color-gray-800: #1a1a1a;
    --color-gray-900: #000000;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    --border-radius-sm: 0.375rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    --container-max-width: 1200px;
    --content-max-width: 800px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* ============================================
   MAIN CONTENT STYLES
   ============================================ */
.main {
    padding: var(--spacing-8) 0;
    min-height: calc(100vh - 200px);
    background: var(--color-white);
}

.article-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* ============================================
   IMAGE SECTION STYLES
   ============================================ */
.image-section {
    order: 1;
}

.hero-image-container {
    position: relative;
    margin-bottom: var(--spacing-6);
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
    animation: fadeInScale 0.8s ease-out;
    border: 2px solid var(--color-black);
}

.hero-image:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 40px -10px rgba(255, 103, 13, 0.3);
}

.image-caption {
    margin-top: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-black);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-gray-50);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
    animation: slideUp 0.8s ease-out 0.3s both;
    font-weight: 500;
}

.thumbnail-gallery {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.thumbnail {
    border: 2px solid var(--color-gray-200);
    background: none;
    cursor: pointer;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-fast);
    opacity: 0.7;
    transform: scale(0.95);
}

.thumbnail:hover,
.thumbnail.active {
    opacity: 1;
    transform: scale(1);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.thumbnail:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.thumbnail img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    display: block;
}

/* ============================================
   CONTENT SECTION STYLES
   ============================================ */
.content-section {
    order: 2;
}

.article-header {
    margin-bottom: var(--spacing-8);
    text-align: center;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.article-title {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    color: white;
    margin-bottom: var(--spacing-4);
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.article-date {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--color-white);
    background: var(--color-black);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--color-primary);
}

.article-summary {
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: #000000;
    border-radius: var(--border-radius-xl);
    border: 2px solid var(--color-black);
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.article-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.article-summary p {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: white;
    margin: 0;
    line-height: 1.7;
}

.article-content {
    margin-bottom: var(--spacing-8);
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.content-paragraph {
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: white;
    margin-bottom: var(--spacing-6);
    font-weight: 400;
}

.content-paragraph:last-child {
    margin-bottom: 0;
}

.expandable-content {
    overflow: hidden;
    transition: all var(--transition-slow);
    opacity: 0;
    max-height: 0;
}

.expandable-content.expanded {
    opacity: 1;
    max-height: 2000px;
}

.read-more-btn {
    background: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-black);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius-lg);
    font-weight: 700;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.read-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--color-black);
    border-color: var(--color-primary);
}

.read-more-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.read-more-btn:active {
    transform: translateY(0);
}

/* ============================================
   ARTICLE ACTIONS STYLES
   ============================================ */
.article-actions {
    display: flex;
    justify-content: center;
    padding-top: var(--spacing-6);
    border-top: 2px solid var(--color-black);
}


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

/* Tablet styles */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-6);
    }
    
    .article-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-12);
        align-items: start;
    }
    
    .image-section {
        order: 1;
    }
    
    .content-section {
        order: 2;
    }
    
    .article-header {
        text-align: left;
    }
    
    .thumbnail img {
        width: 100px;
        height: 75px;
    }
}

/* Desktop styles */
@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-8);
    }
    
    .main {
        padding: var(--spacing-12) 0;
    }
    
    .article-container {
        grid-template-columns: 1.2fr 1fr;
        gap: var(--spacing-16);
    }
    
    .image-section {
        order: 1;
    }
    
    .content-section {
        order: 2;
    }
    
    .article-title {
        font-size: var(--font-size-5xl);
    }
    
    .content-paragraph {
        font-size: var(--font-size-lg);
    }
}

/* Large desktop styles */
@media (min-width: 1200px) {
    .article-container {
        max-width: 1000px;
    }
}

/* Mobile-specific adjustments */
@media (max-width: 480px) {
    .article-title {
        font-size: var(--font-size-3xl);
    }
    
    .thumbnail-gallery {
        gap: var(--spacing-2);
    }
    
    .thumbnail img {
        width: 60px;
        height: 45px;
    }
}

/* ============================================
   ANIMATION KEYFRAMES
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.thumbnail.active {
    border: 2px solid #ff6600;
    transform: scale(1.05);
    transition: transform 0.3s ease, border 0.3s ease;
}
.thumbnail img {
    cursor: pointer;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1F1F1F;
}

::-webkit-scrollbar-thumb {
    background: #FF670D;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #E55D0C;
}

/* Mobile Menu */
.mobile-menu {
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.mobile-menu.active {
    transform: translateX(0);
}