/* Vergi Pusulası - Premium Professional Design */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Primary Colors - Deep Professional Blue */
    --primary: #0066ff;
    --primary-dark: #0052cc;
    --primary-light: #3385ff;
    --primary-gradient: linear-gradient(135deg, #0066ff 0%, #0052cc 100%);
    
    /* Accent Colors */
    --accent: #00d4ff;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
    
    /* Background Colors */
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-lighter: #fafbfc;
    --bg-dark: #0a0e27;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-light: #cbd5e1;
    
    /* Border Colors */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --border-dark: #cbd5e1;
    
    /* Status Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-primary: 0 10px 25px -5px rgba(0, 102, 255, 0.3);
    
    /* Transitions */
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 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: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 1rem;
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.site-main {
    min-height: calc(100vh - 200px);
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

h1 { 
    font-size: clamp(2rem, 5vw, 3.5rem); 
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 { 
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
}

h3 { 
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
}

h4 { 
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 600;
}

h5 { 
    font-size: 1.125rem;
    font-weight: 600;
}

h6 { 
    font-size: 1rem;
    font-weight: 600;
}

p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
    font-weight: 500;
}

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

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

.site-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: 1.25rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.02);
}

.navbar-brand svg {
    width: 32px;
    height: 32px;
    stroke: var(--primary);
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.625rem 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-size: 0.95rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0.25rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
    border-radius: var(--radius-full);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background-color: rgba(0, 102, 255, 0.05);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - 2rem);
}

.navbar-toggler {
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

/* Search Form */
.search-form {
    display: flex;
    position: relative;
}

.search-input {
    padding: 0.625rem 1rem 0.625rem 2.75rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    width: 240px;
    transition: var(--transition);
    background-color: var(--bg-light);
    color: var(--text-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--bg-white);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
    width: 280px;
}

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

.search-form::before {
    content: '🔍';
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    pointer-events: none;
    opacity: 0.5;
}

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

.hero-section {
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 50%, #f1f5f9 100%);
    padding: 6rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #0f172a 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.hero-section p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.btn {
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-primary);
    color: white;
}

.btn-secondary {
    background-color: var(--bg-white);
    color: var(--text-primary);
    border: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--bg-light);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

/* ============================================
   SECTIONS
   ============================================ */

section {
    padding: 5rem 0;
    position: relative;
}

section h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-top: -1rem;
    margin-bottom: 3rem;
    max-width: 600px;
}

/* ============================================
   TOOLS GRID & CARDS
   ============================================ */

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.tool-card {
    background: var(--bg-white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.tool-card:hover .tool-icon {
    background: var(--primary-gradient);
    transform: scale(1.1) rotate(5deg);
}

.tool-icon svg,
.tool-icon i {
    font-size: 1.75rem;
    color: var(--primary);
    transition: var(--transition);
}

.tool-card:hover .tool-icon svg,
.tool-card:hover .tool-icon i {
    color: white;
}

.tool-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.tool-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.tool-card a {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.tool-card:hover a {
    gap: 0.75rem;
    color: var(--primary-dark);
}

.tool-card a svg {
    transition: var(--transition);
}

.tool-card:hover a svg {
    transform: translateX(4px);
}

/* Popular Tools Section */
.popular-tools {
    background: var(--bg-light);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

/* ============================================
   GUIDES GRID & CARDS
   ============================================ */

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.guide-card {
    background: var(--bg-white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.guide-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.guide-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.guide-card:hover img {
    transform: scale(1.08);
}

.guide-card-body {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.guide-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.guide-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex: 1;
    line-height: 1.6;
}

.guide-card a {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    transition: var(--transition);
    margin-top: auto;
}

.guide-card:hover a {
    gap: 0.75rem;
}

.guide-card a svg {
    transition: var(--transition);
}

.guide-card:hover a svg {
    transform: translateX(4px);
}

/* Recent Guides Section */
.recent-guides {
    background: var(--bg-white);
}

/* ============================================
   CATEGORIES
   ============================================ */

.categories-section {
    background: var(--bg-light);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.category-btn {
    padding: 1.25rem 1.5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    color: var(--text-primary);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.category-btn span {
    position: relative;
    z-index: 1;
}

.category-btn:hover {
    border-color: var(--primary);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.category-btn:hover::before {
    left: 0;
}

/* ============================================
   FORMS
   ============================================ */

.calculator-form {
    background: var(--bg-white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-control,
.form-select {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: var(--bg-white);
    color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
    background-color: var(--bg-white);
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

/* ============================================
   CALCULATION RESULT
   ============================================ */

.calculation-result {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, rgba(0, 212, 255, 0.05) 100%);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.5s ease-out;
}

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

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.result-row:last-child {
    border-bottom: none;
    font-weight: 700;
    font-size: 1.125rem;
    padding-top: 1.5rem;
    margin-top: 0.5rem;
    border-top: 2px solid var(--primary);
}

.result-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.result-value {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
}

.result-row:last-child .result-value {
    font-size: 1.5rem;
    color: var(--primary-dark);
}

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

.card {
    background: var(--bg-white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary);
}

.card-body {
    padding: 2rem;
}

.card-header {
    padding: 1.25rem 2rem;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

.card-title {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.breadcrumb {
    background: transparent;
    padding: 1.25rem 0;
    gap: 0.5rem;
    margin-bottom: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '›';
    color: var(--text-tertiary);
    margin-right: 0.5rem;
    font-weight: 300;
}

.breadcrumb-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--text-secondary);
    font-weight: 500;
}

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

.site-footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-light);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-column h6 {
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-light);
    font-size: 0.95rem;
    transition: var(--transition);
    font-weight: 400;
}

.footer-links a:hover {
    color: white;
    padding-left: 0.5rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* ============================================
   ACCORDION
   ============================================ */

.accordion-button {
    font-weight: 600;
    color: var(--text-primary);
    background-color: var(--bg-white);
    border: 1.5px solid var(--border);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, rgba(0, 212, 255, 0.05) 100%);
    color: var(--primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.accordion-button:focus {
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
    border-color: var(--primary);
}

.accordion-body {
    padding: 1.5rem;
    background-color: var(--bg-white);
    border: 1.5px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1.5px solid;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.alert-info {
    background-color: var(--info-light);
    border-color: var(--info);
    color: var(--info);
}

.alert-success {
    background-color: var(--success-light);
    border-color: var(--success);
    color: var(--success);
}

.alert-warning {
    background-color: var(--warning-light);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-danger {
    background-color: var(--danger-light);
    border-color: var(--danger);
    color: var(--danger);
}

/* ============================================
   GUIDE CONTENT
   ============================================ */

.guide-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.guide-content h2 {
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--border);
    font-size: 2rem;
}

.guide-content h3 {
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
}

.guide-content h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.guide-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.guide-content ul,
.guide-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.guide-content li {
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.guide-content code {
    background-color: var(--bg-light);
    color: var(--primary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-weight: 600;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.guide-content pre {
    background-color: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.9rem;
    line-height: 1.6;
    box-shadow: var(--shadow-lg);
}

.guide-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.guide-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 1.25rem 1.75rem;
    margin: 2rem 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, rgba(0, 212, 255, 0.05) 100%);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.guide-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

/* ============================================
   AD SLOTS
   ============================================ */

.adslot-container {
    margin: 3rem 0;
    padding: 2rem;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-lighter);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.5rem;
}

.ad-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* ============================================
   COOKIE BANNER
   ============================================ */

.cookie-banner {
    background: var(--bg-white);
    border-top: 2px solid var(--primary);
    padding: 1.5rem 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    animation: slideUp 0.5s ease-out;
}

.cookie-banner-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cookie-banner p {
    margin-bottom: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.cookie-banner a {
    font-weight: 600;
}

.cookie-buttons {
    display: flex;
    gap: 0.75rem;
    flex-shrink: 0;
}

/* ============================================
   BACK TO TOP
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 998;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-secondary) !important; }

.bg-light { background-color: var(--bg-light) !important; }
.bg-lighter { background-color: var(--bg-lighter) !important; }

.fw-bold { font-weight: 700 !important; }
.fw-semibold { font-weight: 600 !important; }
.fw-medium { font-weight: 500 !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

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

@media (max-width: 992px) {
    .tools-grid,
    .guides-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .hero-section {
        padding: 4rem 0 3rem;
    }
    
    .hero-section h1 {
        font-size: 2.25rem;
    }
    
    .hero-section p {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    section {
        padding: 3.5rem 0;
    }
    
    .tools-grid,
    .guides-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .categories {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }
    
    .search-input {
        width: 180px;
    }
    
    .search-input:focus {
        width: 200px;
    }
    
    .cookie-banner-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .cookie-buttons {
        width: 100%;
    }
    
    .cookie-buttons .btn {
        flex: 1;
    }
    
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 48px;
        height: 48px;
    }
}

@media (max-width: 576px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .hero-section {
        padding: 3rem 0 2rem;
    }
    
    .hero-section h1 {
        font-size: 1.875rem;
    }
    
    .hero-section p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .calculator-form {
        padding: 1.5rem;
    }
    
    section {
        padding: 2.5rem 0;
    }
    
    .tool-card,
    .guide-card-body {
        padding: 1.5rem;
    }
    
    .categories {
        grid-template-columns: 1fr;
    }
    
    .search-input {
        width: 150px;
        font-size: 0.85rem;
        padding: 0.5rem 0.875rem 0.5rem 2.5rem;
    }
}

/* ============================================
   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: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================
   SELECTION
   ============================================ */

::selection {
    background-color: var(--primary);
    color: white;
}

::-moz-selection {
    background-color: var(--primary);
    color: white;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .site-header,
    .site-footer,
    .adslot-container,
    .cookie-banner,
    .back-to-top,
    .btn {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}