/* ====================================
   Alpha Typing Blog - Professional Styles
   ==================================== */

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

:root {
    /* Color Palette */
    --primary-blue: #4A90E2;
    --primary-light: #6BA3E8;
    --primary-dark: #3A7BC8;
    --accent-purple: #8B7FD8;
    --text-dark: #2C3E50;
    --text-medium: #5A6C7D;
    --text-light: #7F8C8D;
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-gradient-start: #E3F2FD;
    --bg-gradient-end: #F3E5F5;
    --shadow-sm: 0 2px 8px rgba(74, 144, 226, 0.08);
    --shadow-md: 0 4px 16px rgba(74, 144, 226, 0.12);
    --shadow-lg: 0 8px 32px rgba(74, 144, 226, 0.16);
    --shadow-hover: 0 12px 40px rgba(74, 144, 226, 0.2);
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-white);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ====================================
   Breadcrumb
   ==================================== */
.breadcrumb-container {
    background: var(--bg-light);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(74, 144, 226, 0.1);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 14px;
}

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

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

.breadcrumb .separator {
    color: var(--text-light);
    font-size: 12px;
}

.breadcrumb .current {
    color: var(--text-medium);
    font-weight: 500;
}

/* ====================================
   Header Section
   ==================================== */
.hero-header {
    background: linear-gradient(135deg, #E3F2FD 0%, #F3E5F5 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 127, 216, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(74, 144, 226, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.main-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-medium);
    position: relative;
    z-index: 1;
}

/* Fade-in Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

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

/* ====================================
   Search Section
   ==================================== */
.search-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-white);
}

.search-wrapper {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-blue);
    font-size: 1.25rem;
    pointer-events: none;
    z-index: 1;
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 60px;
    font-size: 1rem;
    font-family: var(--font-primary);
    color: var(--text-dark);
    background: var(--bg-white);
    border: 2px solid rgba(74, 144, 226, 0.2);
    border-radius: var(--radius-xl);
    outline: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.search-input:focus {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.search-input::placeholder {
    color: var(--text-light);
}

/* Suggestion Dropdown */
.suggestion-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.suggestion-item {
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    border-bottom: 1px solid rgba(74, 144, 226, 0.05);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover {
    background: var(--bg-gradient-start);
}

.suggestion-item i {
    color: var(--primary-blue);
    font-size: 1rem;
}

.suggestion-item span {
    color: var(--text-dark);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ====================================
   Blog Section
   ==================================== */
.blog-section {
    padding: var(--spacing-xl) 0 var(--spacing-2xl) 0;
    background: var(--bg-white);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* No Results Message */
.no-results {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
}

.no-results i {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.no-results p {
    font-size: 1.25rem;
    color: var(--text-medium);
    font-weight: 500;
}

/* ====================================
   Blog Cards
   ==================================== */
.blog-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    animation: cardFadeIn 0.6s ease forwards;
    opacity: 0;
}

@keyframes cardFadeIn {
    to {
        opacity: 1;
    }
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.card-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .card-image img {
    transform: scale(1.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(44, 62, 80, 0.1) 100%);
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-description {
    font-size: 0.95rem;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-light) 100%);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.25);
}

.read-more-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.35);
    transform: translateX(4px);
}

.read-more-btn i {
    font-size: 0.875rem;
    transition: transform var(--transition-fast);
}

.read-more-btn:hover i {
    transform: translateX(4px);
}

/* ====================================
   Responsive Design
   ==================================== */

/* Tablet (768px - 1024px) */
@media screen and (max-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
}

/* Mobile (up to 767px) */
@media screen and (max-width: 767px) {
    :root {
        --spacing-xl: 32px;
        --spacing-2xl: 48px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-header {
        padding: var(--spacing-lg) 0;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .search-section {
        padding: var(--spacing-md) 0;
    }
    
    .search-input {
        padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) 50px;
        font-size: 0.95rem;
    }
    
    .search-icon {
        left: var(--spacing-sm);
        font-size: 1.1rem;
    }
    
    .card-image {
        height: 200px;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .card-description {
        font-size: 0.9rem;
    }
    
    .read-more-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .breadcrumb {
        font-size: 13px;
    }
}

/* Small Mobile (up to 480px) */
@media screen and (max-width: 480px) {
    .main-title {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 0.95rem;
    }
    
    .card-content {
        padding: var(--spacing-sm);
    }
    
    .hero-header::before,
    .hero-header::after {
        display: none;
    }
}

/* ====================================
   Scrollbar Styling
   ==================================== */
.suggestion-dropdown::-webkit-scrollbar {
    width: 6px;
}

.suggestion-dropdown::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: 3px;
}

.suggestion-dropdown::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 3px;
}

.suggestion-dropdown::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

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

/* Focus Visible for Keyboard Navigation */
.search-input:focus-visible,
.read-more-btn:focus-visible,
.suggestion-item:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .search-section,
    .breadcrumb-container {
        display: none;
    }
    
    .blog-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--text-light);
    }
}