/* ============================================
   Streets Services - Main Stylesheet
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #60a5fa;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #475569;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 6px 12px rgba(59, 130, 246, 0.2);
    --shadow-xl: 0 8px 16px rgba(59, 130, 246, 0.3);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.3rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.8rem;
    --font-size-4xl: 2.5rem;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

body::-webkit-scrollbar { width: 10px; }
body::-webkit-scrollbar-track { background: var(--bg-dark); }
body::-webkit-scrollbar-thumb { background: var(--primary-color); border-radius: 5px; }
body::-webkit-scrollbar-thumb:hover { background: var(--accent-color); }

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; }

a { color: var(--accent-color); text-decoration: none; transition: opacity var(--transition-base); }
a:hover { opacity: 0.8; }

/* ============================================
   Header — Compact
   ============================================ */
.main-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 0.55rem var(--spacing-sm);
    text-align: center;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

.header-icon {
    width: 28px;
    height: 28px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.main-header h1 {
    font-size: 1.4rem;
    margin: 0;
}

.tagline {
    font-size: 0.8rem;
    opacity: 0.85;
    margin: 0;
    line-height: 1.2;
}

/* ============================================
   Navigation
   ============================================ */
.main-nav {
    background: var(--bg-card);
    padding: var(--spacing-sm);
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    box-shadow: var(--shadow-sm);
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.nav-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1400px;
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-sm);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--accent-color);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-lg);
}

.back-link:hover {
    background: var(--bg-hover);
    transform: translateX(-5px);
}

/* ============================================
   Section Components
   ============================================ */
.content-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
    animation: fadeIn var(--transition-slow);
}

.content-section:hover { box-shadow: var(--shadow-lg); }

.section-header {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-hover) 0%, var(--bg-card) 100%);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: all var(--transition-base);
}

.section-header:hover { background: var(--bg-hover); }

.section-header h2 {
    font-size: var(--font-size-3xl);
    color: var(--accent-color);
    margin: 0;
}

.toggle-icon {
    font-size: 1.2rem;
    transition: transform var(--transition-base);
    color: var(--accent-color);
}

.section-header.collapsed .toggle-icon { transform: rotate(-90deg); }

.section-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
    padding: 0 var(--spacing-md);
}

.section-content.active {
    max-height: 6000px;
    padding: var(--spacing-md);
}

/* ============================================
   Grid Layouts
   ============================================ */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.service-card {
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-primary);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    animation: fadeIn var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
    background: var(--bg-hover);
}

.service-card img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-base);
}

.service-card:hover img { transform: scale(1.1); }
.service-card span { font-weight: 500; font-size: 0.95rem; }

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

.about-card {
    background: var(--bg-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-base);
    animation: fadeIn var(--transition-slow);
}

.about-card:hover {
    border-left-color: var(--accent-color);
    transform: translateX(5px);
}

.about-card h3 { color: var(--accent-color); margin-bottom: var(--spacing-sm); font-size: var(--font-size-xl); }
.about-card p { color: var(--text-secondary); line-height: 1.8; }
.about-card ul { list-style: none; padding-left: 0; }

.about-card li {
    color: var(--text-secondary);
    padding: 0.4rem 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.about-card li:before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
}

.contact-section h3 { margin-bottom: var(--spacing-sm); font-size: var(--font-size-2xl); }
.contact-section a { color: white; text-decoration: underline; font-weight: 500; }

/* ============================================
   Game Cards
   ============================================ */
.game-card {
    background: var(--bg-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.game-card:hover { border-left-color: var(--accent-color); transform: translateX(5px); }
.game-card h3 { color: var(--accent-color); margin-bottom: var(--spacing-xs); font-size: var(--font-size-xl); }

.player-count {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

/* ============================================
   Generator Components
   ============================================ */
.generator-section {
    background: var(--bg-dark);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.generator-section:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.generator-section h3 {
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-2xl);
    text-align: center;
}

.generator-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

.generator-button,
.calculate-button {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 300px;
}

.generator-button:hover,
.calculate-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(59, 130, 246, 0.4);
}

.generator-button:active,
.calculate-button:active { transform: translateY(0); }

.result-display {
    background: var(--bg-card);
    border: 2px solid var(--primary-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-2xl);
    text-align: center;
    color: var(--text-primary);
    font-weight: 600;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 300px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.result-display:empty:before {
    content: "Click button to generate";
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    font-weight: normal;
}

.result-display.animate { animation: pulse var(--transition-slow) ease; }

.generators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

/* ============================================
   Calculator Components
   ============================================ */
.calculator-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-dark);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

.form-group { display: flex; flex-direction: column; gap: var(--spacing-xs); }

.form-group label { color: var(--accent-color); font-weight: 600; font-size: var(--font-size-lg); }

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    font-family: var(--font-family);
    transition: all var(--transition-base);
    width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-secondary); opacity: 0.5; }

.calculate-button { margin-top: var(--spacing-xs); padding: 1.25rem var(--spacing-lg); font-size: 1.2rem; }

.result-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-sm);
    text-align: center;
    margin-top: var(--spacing-lg);
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.result-box.show { opacity: 1; transform: translateY(0); }
.result-text { font-size: 1.8rem; font-weight: 700; color: white; }
.result-subtext { font-size: var(--font-size-base); color: rgba(255, 255, 255, 0.9); margin-top: var(--spacing-xs); }

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

.info-card {
    background: var(--bg-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.info-card h3 { color: var(--accent-color); margin-bottom: 0.75rem; font-size: 1.2rem; }
.info-card p { color: var(--text-secondary); line-height: 1.6; font-size: 0.95rem; }

/* ============================================
   Footer
   ============================================ */
.main-footer {
    background: var(--bg-card);
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: 3rem;
    color: var(--text-secondary);
    box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ============================================
   Utility Classes
   ============================================ */
.intro-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-lg);
}

.pack-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.pack-header h3 { color: white; margin: 0; font-size: var(--font-size-2xl); }

/* ============================================
   Tool & Page-Specific Components
   ============================================ */

/* Subnet calculator, result grids */
.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}
.result-item {
    background: var(--bg-dark);
    padding: 1rem;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary-color);
}
.result-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}
.result-value {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'Courier New', monospace;
}
.ip-input-group {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1rem;
    align-items: end;
}
.cidr-select {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    width: 100%;
}
.cidr-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.hosts-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    color: white;
}
.hosts-number { font-size: 2.5rem; font-weight: 700; margin-bottom: 0.5rem; }
.hosts-label { font-size: 1rem; opacity: 0.9; }
.binary-display {
    background: var(--bg-dark);
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--accent-color);
    overflow-x: auto;
    margin-top: 0.5rem;
}
.binary-octet { display: inline-block; margin-right: 1rem; }
.error-message {
    background: #ef4444;
    color: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
    display: none;
}

/* Password generator */
.password-display {
    background: var(--bg-card);
    border: 2px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
    text-align: center;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-weight: 600;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    word-break: break-all;
    transition: all var(--transition-base);
    position: relative;
    user-select: all;
}
.password-display:empty:before {
    content: "Click generate to create password";
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    font-weight: normal;
    font-family: var(--font-family);
}
.copy-button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: 600;
    font-size: var(--font-size-base);
}
.copy-button:hover { background: var(--primary-color); transform: translateY(-2px); }
.copy-button:disabled { opacity: 0.5; cursor: not-allowed; }
.copy-feedback {
    position: absolute;
    top: -30px;
    right: 10px;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}
.copy-feedback.show { opacity: 1; }
.option-group {
    background: var(--bg-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}
.checkbox-group { display: flex; flex-direction: column; gap: 1rem; }
.checkbox-item { display: flex; align-items: center; gap: 0.75rem; }
.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}
.checkbox-item label { color: var(--text-secondary); cursor: pointer; font-size: var(--font-size-base); }
.slider-group { display: flex; flex-direction: column; gap: 0.5rem; }
.slider-label { display: flex; justify-content: space-between; align-items: center; color: var(--text-secondary); }
.slider-value {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}
input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--bg-card);
    outline: none;
    -webkit-appearance: none;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
}
.strength-meter { margin-top: 1rem; padding: 1rem; background: var(--bg-card); border-radius: var(--radius-sm); text-align: center; }
.strength-label { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.strength-bar { height: 10px; background: var(--bg-dark); border-radius: 5px; overflow: hidden; margin-bottom: 0.5rem; }
.strength-fill { height: 100%; transition: all var(--transition-base); border-radius: 5px; }
.strength-text { font-weight: 600; font-size: 1.1rem; }
.button-group { display: flex; gap: 1rem; align-items: center; }

/* Contact page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}
.contact-form-section,
.contact-info-section {
    background: var(--bg-dark);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
}
.contact-form-section h3,
.contact-info-section h3 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.cf-group { margin-bottom: 1.5rem; }
.cf-group label { display: block; color: var(--accent-color); font-weight: 600; margin-bottom: 0.5rem; }
.cf-group input,
.cf-group textarea,
.cf-group select {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: all var(--transition-base);
}
.cf-group input:focus,
.cf-group textarea:focus,
.cf-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.cf-group textarea { min-height: 150px; resize: vertical; }
.cf-group select { cursor: pointer; }
.cf-group input::placeholder,
.cf-group textarea::placeholder { color: var(--text-secondary); opacity: 0.5; }
.submit-button {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    width: 100%;
}
.submit-button:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 6px 12px rgba(59, 130, 246, 0.4); }
.submit-button:disabled { opacity: 0.6; cursor: not-allowed; }
.contact-method {
    display: flex;
    align-items: start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    transition: all var(--transition-base);
}
.contact-method:hover { border-left: 4px solid var(--primary-color); padding-left: calc(1.5rem - 4px); }
.contact-icon { font-size: 2rem; min-width: 40px; }
.contact-details h4 { color: var(--accent-color); margin-bottom: 0.5rem; }
.contact-details p { color: var(--text-secondary); margin-bottom: 0.5rem; }
.contact-details a { color: var(--primary-color); text-decoration: none; font-weight: 600; }
.contact-details a:hover { text-decoration: underline; }
.status-message {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    display: none;
}
.status-message.success { background: #10b981; color: white; display: block; }
.status-message.error { background: #ef4444; color: white; display: block; }
.required { color: #ef4444; }
.formspree-note { font-size: 0.8rem; color: var(--text-secondary); margin-top: 0.5rem; text-align: center; }

/* Breadcrumb */
.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--accent-color); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span:last-child { color: var(--text-primary); font-weight: 500; }

/* Tools search filter (homepage) */
.tools-search-wrap {
    margin-bottom: var(--spacing-md);
    max-width: 400px;
}
.tools-search-wrap label { display: block; color: var(--accent-color); font-weight: 600; margin-bottom: 0.5rem; font-size: var(--font-size-sm); }
.tools-search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base);
}
.tools-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}
.tools-search-input::placeholder { color: var(--text-secondary); opacity: 0.6; }
.service-card.filter-hidden { display: none; }
.no-tools-message { display: none; color: var(--text-secondary); padding: var(--spacing-md); }
.no-tools-message.visible { display: block; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 1.8rem;
        --font-size-3xl: 1.4rem;
        --font-size-2xl: 1.3rem;
    }

    .main-nav { gap: var(--spacing-sm); }
    .nav-link { padding: 0.4rem 0.8rem; font-size: var(--font-size-sm); }

    .service-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }

    .service-card { padding: var(--spacing-sm); }
    .service-card img { width: 60px; height: 60px; }
    .about-grid { grid-template-columns: 1fr; }
    .generators-grid { grid-template-columns: 1fr; }
    .generator-button { font-size: var(--font-size-base); padding: 0.875rem var(--spacing-md); }
    .result-display { font-size: 1.25rem; min-height: 70px; }
    .calculator-container { padding: var(--spacing-md); }
    .info-cards { grid-template-columns: 1fr; }
    .ip-input-group { grid-template-columns: 1fr; }
    .result-grid { grid-template-columns: 1fr; }
    .password-display { font-size: 1.2rem; padding: 1rem; }
    .button-group { flex-direction: column; width: 100%; }
    .button-group button { width: 100%; }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 968px) {
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .header-content { flex-direction: row; gap: 0.4rem; }
    .main-header h1 { font-size: 1.15rem; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .result-text { font-size: 1.5rem; }
}