/* RoadInsite - Main Stylesheet */

/* ===== CSS Variables ===== */
:root {
    /* Brand Colors */
    --color-primary: #0AA0A8;      /* Teal */
    --color-secondary: #0B3A53;    /* Deep Blue */
    --color-accent: #F59E0B;       /* Amber */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

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

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--text-5xl);
    font-weight: var(--font-weight-extrabold);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-4);
}

.lead {
    font-size: var(--text-xl);
    line-height: 1.7;
    color: var(--color-gray-700);
}

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

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
}

.logo {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.nav-cta {
    margin-left: var(--space-4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-gray-700);
    margin: 3px 0;
    transition: all var(--transition-fast);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-base);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}

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

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

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

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

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

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

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: var(--space-32) 0 var(--space-24) 0;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.05;
}

.hero-pattern {
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(45deg, var(--color-primary) 0, var(--color-primary) 1px, transparent 1px, transparent 15px),
        repeating-linear-gradient(-45deg, var(--color-secondary) 0, var(--color-secondary) 1px, transparent 1px, transparent 15px);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.hero-text {
    z-index: 1;
}

.badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(10, 160, 168, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-4);
}

.hero-title {
    margin-bottom: var(--space-6);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--text-xl);
    line-height: 1.7;
    color: var(--color-gray-700);
    margin-bottom: var(--space-8);
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-secondary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
}

.hero-visual {
    position: relative;
}

.dashboard-preview {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.dashboard-header {
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-100);
    display: flex;
    gap: var(--space-2);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-gray-300);
}

.dashboard-content {
    padding: var(--space-6);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Sections ===== */
.section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-600);
}

.alt-bg {
    background: var(--color-gray-50);
}

/* ===== Problem Section ===== */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.problem-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.problem-icon {
    margin-bottom: var(--space-4);
}

.problem-card h3 {
    margin-bottom: var(--space-3);
    color: var(--color-secondary);
}

.problem-card p {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ===== Features Section ===== */
.features-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
    overflow-x: auto;
    padding-bottom: var(--space-2);
}

.tab-btn {
    padding: var(--space-3) var(--space-6);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.feature-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.feature-list {
    list-style: none;
    margin: var(--space-6) 0;
}

.feature-list li {
    padding: var(--space-3) 0;
    padding-left: var(--space-8);
    position: relative;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--text-xl);
}

.feature-visual {
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Integration Section ===== */
.integration-diagram {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--space-8);
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.integration-sources,
.integration-outputs {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.integration-sources h4,
.integration-outputs h4 {
    margin-bottom: var(--space-4);
    color: var(--color-gray-700);
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
}

.source-item,
.output-item {
    padding: var(--space-3) var(--space-4);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    text-align: center;
}

.integration-core {
    text-align: center;
}

.core-visual {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-4);
}

/* ===== ROI Section ===== */
.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.roi-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    text-align: center;
}

.roi-value {
    font-size: var(--text-5xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-2);
}

.roi-metric {
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.roi-card p {
    margin-bottom: 0;
    opacity: 0.9;
}

/* ===== Customer Section ===== */
.customer-logos {
    text-align: center;
}

.customer-category {
    margin-bottom: var(--space-12);
}

.customer-category h4 {
    margin-bottom: var(--space-6);
    color: var(--color-gray-700);
}

.logo-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-6);
}

.customer-logo {
    padding: var(--space-6) var(--space-8);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.cta-content p {
    font-size: var(--text-xl);
    margin-bottom: var(--space-8);
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    font-size: var(--text-sm);
    opacity: 0.8;
}

/* ===== Page Hero ===== */
.page-hero {
    padding: var(--space-32) 0 var(--space-16) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    text-align: center;
}

.page-hero h1 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.page-hero p {
    font-size: var(--text-xl);
    opacity: 0.9;
    margin-bottom: 0;
}

/* ===== Forms ===== */
.contact-form {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(10, 160, 168, 0.1);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-label input {
    width: auto;
    margin-right: var(--space-2);
}

.form-note {
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    text-align: center;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--space-16) 0 var(--space-8) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
    font-size: var(--text-base);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-2);
}

.footer-section a {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
}

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

.footer-tagline {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    margin-top: var(--space-2);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .feature-detail {
        grid-template-columns: 1fr;
    }
    
    .integration-diagram {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: var(--text-4xl);
    }
    
    h2 {
        font-size: var(--text-3xl);
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--space-4);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .tab-buttons {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .cta-features {
        flex-direction: column;
        gap: var(--space-2);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    h1 {
        font-size: var(--text-3xl);
    }
    
    h2 {
        font-size: var(--text-2xl);
    }
    
    .section {
        padding: var(--space-16) 0;
    }
    
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    .roi-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================ */
/* Tools Page Styles */
/* ============================================ */

.tools-intro {
    text-align: center;
    margin-bottom: var(--space-16);
}

.tools-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-8);
}

.tool-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tool-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.tool-card.active {
    cursor: default;
}

.tool-card.coming-soon {
    opacity: 0.7;
    cursor: not-allowed;
}

.tool-card.coming-soon:hover {
    transform: none;
}

.tool-header {
    padding: var(--space-8);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
}

.tool-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.tool-info h3 {
    margin: 0 0 var(--space-2) 0;
    color: var(--text-primary);
}

.tool-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.tool-body {
    padding: var(--space-8);
    background: white;
}

.converter-section {
    margin-bottom: var(--space-8);
}

.converter-section h4 {
    color: var(--primary-dark);
    margin-bottom: var(--space-4);
    font-size: var(--text-lg);
}

.dms-input-group,
.decimal-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.coordinate-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.coordinate-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.dms-inputs {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.input-wrapper {
    display: flex;
    align-items: center;
    position: relative;
}

.dms-input {
    width: 80px;
    padding: var(--space-2) var(--space-3);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--text-base);
    transition: all 0.2s ease;
}

.dms-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 160, 168, 0.1);
}

.dms-input.error {
    border-color: #ef4444;
}

.input-label {
    margin-left: var(--space-1);
    color: var(--text-secondary);
    font-weight: 500;
}

.dms-select {
    padding: var(--space-2) var(--space-3);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: white;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all 0.2s ease;
}

.dms-select:focus {
    outline: none;
    border-color: var(--primary);
}

.decimal-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--text-base);
    transition: all 0.2s ease;
}

.decimal-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 160, 168, 0.1);
}

.divider {
    height: 1px;
    background: var(--border);
    margin: var(--space-8) 0;
}

.result-box {
    margin-top: var(--space-6);
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(10, 160, 168, 0.05) 100%);
    border-radius: var(--radius);
    position: relative;
}

.result-box.animate {
    animation: resultPulse 0.5s ease;
}

@keyframes resultPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.result-box label {
    display: block;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--space-3);
}

.result-value {
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--text-primary);
}

.coordinate-result {
    padding: var(--space-2) 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.coordinate-result .label {
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 100px;
}

.coordinate-result .value {
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--primary-dark);
    font-weight: 600;
}

.coordinate-result.full {
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border);
}

.copy-btn {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-2) var(--space-3);
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

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

.copy-btn.copied {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.examples-section {
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    border-top: 2px solid var(--border);
}

.examples-section h4 {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.example-locations {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.example-btn {
    padding: var(--space-2) var(--space-4);
    background: white;
    border: 2px solid var(--primary);
    color: var(--primary);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.coming-soon-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--accent);
    color: white;
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.tool-features {
    margin-top: var(--space-16);
}

.tool-features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-8);
}

.tool-features .feature {
    text-align: center;
}

.tool-features .feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-4);
}

.gradient-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    padding: var(--space-4) var(--space-6);
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    z-index: 1000;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-success {
    border-left: 4px solid #10b981;
}

.toast-error {
    border-left: 4px solid #ef4444;
}

.toast-success svg {
    color: #10b981;
}

.toast-error svg {
    color: #ef4444;
}

/* Highlight Animation */
.highlight {
    animation: highlightPulse 1s ease;
}

@keyframes highlightPulse {
    0%, 100% { background: transparent; }
    50% { background: rgba(10, 160, 168, 0.1); }
}

/* Responsive Design for Tools */
@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .dms-inputs {
        flex-direction: column;
        align-items: stretch;
    }
    
    .input-wrapper {
        width: 100%;
    }
    
    .dms-input {
        width: 100%;
    }
    
    .example-locations {
        flex-direction: column;
    }
    
    .example-btn {
        width: 100%;
    }
    
    .coordinate-result .label {
        min-width: auto;
    }
    
    .toast {
        bottom: var(--space-4);
        right: var(--space-4);
        left: var(--space-4);
    }
}

/* ============================================ */
/* New Transport Engineering Tools Styles */
/* ============================================ */

/* PCU Calculator Styles */
.pcu-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.vehicle-row {
    display: grid;
    grid-template-columns: 1fr 100px 80px;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3);
    background: var(--bg-light);
    border-radius: var(--radius);
}

.vehicle-row label {
    font-weight: 500;
    color: var(--text-primary);
}

.vehicle-input {
    padding: var(--space-2) var(--space-3);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--text-base);
    text-align: center;
}

.vehicle-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 160, 168, 0.1);
}

.pcu-factor {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
}

.pcu-controls {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.pcu-results {
    margin-top: var(--space-8);
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(10, 160, 168, 0.05) 100%);
    border-radius: var(--radius);
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border);
}

.result-row:last-child {
    border-bottom: none;
}

.result-row.highlight {
    background: white;
    margin: var(--space-2) calc(-1 * var(--space-4));
    padding: var(--space-4);
    border-radius: var(--radius);
    border: 2px solid var(--primary);
}

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

.result-value {
    font-weight: 600;
    color: var(--primary-dark);
    font-family: 'Monaco', 'Courier New', monospace;
}

#pcu-chart {
    margin-top: var(--space-6);
    width: 100%;
    height: auto;
}

/* Sight Distance Calculator Styles */
.sight-tabs, .los-tabs {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    border-bottom: 2px solid var(--border);
}

.sight-tab, .los-tab {
    padding: var(--space-3) var(--space-4);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.sight-tab:hover, .los-tab:hover {
    color: var(--primary);
}

.sight-tab.active, .los-tab.active {
    color: var(--primary);
}

.sight-tab.active::after, .los-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
}

.sight-content, .los-content {
    animation: fadeIn 0.3s ease;
}

.sight-inputs, .los-inputs, .queue-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.input-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.input-group input,
.input-group select {
    padding: var(--space-3);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--text-base);
    transition: all 0.2s ease;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 160, 168, 0.1);
}

.sight-result, .queue-results {
    margin-top: var(--space-6);
    padding: var(--space-6);
    background: white;
    border: 2px solid var(--primary);
    border-radius: var(--radius);
}

.result-main {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

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

.result-main .value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--primary);
}

.result-main .unit {
    font-size: var(--text-lg);
    color: var(--text-secondary);
}

.result-breakdown {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border);
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
}

.breakdown-item span:first-child {
    color: var(--text-secondary);
}

.breakdown-item span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* Queue Length Estimator Styles */
.result-card {
    background: white;
    padding: var(--space-4);
    border-radius: var(--radius);
}

.result-card h5 {
    margin: 0 0 var(--space-4) 0;
    color: var(--primary-dark);
    font-size: var(--text-lg);
}

/* Level of Service Styles */
.los-result {
    margin-top: var(--space-6);
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

.los-grade {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: 800;
    color: white;
    margin: 0 auto var(--space-4);
}

.los-description {
    text-align: center;
    font-size: var(--text-lg);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

.los-scale {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
    margin-top: var(--space-6);
}

.los-item {
    flex: 1;
    padding: var(--space-3);
    text-align: center;
    background: var(--bg-light);
    border-radius: var(--radius);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    transition: all 0.3s ease;
}

.los-item.active {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.result-details {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
}

.detail-row span:first-child {
    color: var(--text-secondary);
}

.detail-row span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive adjustments for new tools */
@media (max-width: 768px) {
    .vehicle-row {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }
    
    .sight-tabs, .los-tabs {
        flex-direction: column;
    }
    
    .los-scale {
        flex-direction: column;
    }
    
    .pcu-controls {
        flex-direction: column;
    }
    
    .pcu-controls button {
        width: 100%;
    }
}

/* ============================================ */
/* Navigation Dropdown Styles */
/* ============================================ */

.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown .nav-link {
    position: relative;
    padding-right: var(--space-6);
}

/* Create a separate pseudo-element for the dropdown arrow */
.nav-dropdown .nav-link::before {
    content: '▼';
    position: absolute;
    right: var(--space-2);
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    transition: transform 0.3s ease;
}

/* Remove the active state underline for the Tools dropdown */
.nav-dropdown .nav-link::after {
    display: none !important;
}

.nav-dropdown:hover .nav-link::before {
    transform: translateY(-50%) rotate(180deg);
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    background: white;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-top: var(--space-2);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-dropdown:hover .dropdown-content {
    display: block;
    animation: dropdownFadeIn 0.3s ease forwards;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border);
}

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

.dropdown-item:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.dropdown-item.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.dropdown-item svg {
    flex-shrink: 0;
}

/* Tool Cards Dashboard Styles */
.tools-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.tool-dashboard-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

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

.tool-card-header {
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.tool-card-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.3; }
}

.tool-card-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
}

.tool-card-header h3 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-xl);
    font-weight: 700;
}

.tool-card-header p {
    margin: 0;
    opacity: 0.9;
    font-size: var(--text-sm);
}

.tool-card-body {
    padding: var(--space-6);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.tool-feature-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--bg-light);
    color: var(--text-secondary);
    border-radius: 999px;
    font-size: var(--text-xs);
    font-weight: 500;
}

.tool-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    font-weight: 600;
    margin-top: auto;
    align-self: flex-start;
    transition: all 0.2s ease;
}

.tool-dashboard-card:hover .tool-cta {
    background: var(--primary-dark);
    transform: translateX(4px);
}

/* Individual Tool Page Styles */
.page-header.compact {
    padding: var(--space-12) 0 var(--space-8);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
}

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

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

.breadcrumb span {
    color: var(--text-secondary);
}

.tool-container {
    max-width: 1200px;
    margin: 0 auto;
}

.converter-card, .calculator-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-8);
    overflow: hidden;
}

.card-header {
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    border-bottom: 2px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    margin: 0;
    color: var(--primary-dark);
    font-size: var(--text-xl);
}

.badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--accent);
    color: white;
    border-radius: 999px;
    font-size: var(--text-xs);
    font-weight: 600;
}

.card-body {
    padding: var(--space-8);
}

.examples-card, .info-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.info-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    color: var(--primary);
}

.info-content ul {
    margin: var(--space-3) 0;
    padding-left: var(--space-6);
}

.accuracy-note {
    margin-top: var(--space-4);
    padding: var(--space-3);
    background: var(--bg-light);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius);
}

.tools-grid.compact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
}

.tool-link-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius);
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid var(--border);
}

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

.tool-link-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: var(--space-3);
}

.tool-link-card h4 {
    margin: 0 0 var(--space-2) 0;
    color: var(--text-primary);
}

.tool-link-card p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* Mobile responsiveness for dropdown */
@media (max-width: 768px) {
    .nav-dropdown .nav-link::after {
        display: none;
    }
    
    .dropdown-content {
        position: static;
        display: block;
        transform: none;
        margin-top: 0;
        box-shadow: none;
        border: none;
        background: transparent;
        opacity: 1;
    }
    
    .nav-dropdown:hover .dropdown-content {
        animation: none;
    }
    
    .dropdown-item {
        padding-left: var(--space-8);
        background: rgba(255, 255, 255, 0.05);
    }
}
/* ===== Navigation Dropdown ===== */
.nav-dropdown {
    position: relative;
    display: inline-block;
}
.nav-dropdown .dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    min-width: 220px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-2) 0;
    z-index: var(--z-dropdown);
    margin-top: var(--space-2);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.nav-dropdown:hover .dropdown-content {
    display: block;
    opacity: 1;
}
.nav-dropdown .dropdown-content::before {
    content: "";
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 8px 8px 8px;
    border-color: transparent transparent white transparent;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-6);
    color: var(--gray-700);
    text-decoration: none;
    transition: all 0.2s ease;
}
.dropdown-item:hover {
    background: var(--gray-50);
    color: var(--primary);
}
.dropdown-item.active {
    background: var(--primary-light);
    color: var(--primary);
}
.dropdown-item svg {
    flex-shrink: 0;
    opacity: 0.7;
}
.dropdown-item:hover svg {
    opacity: 1;
}

/* ===== Tools Dashboard ===== */
.tools-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}
.tool-dashboard-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.tool-dashboard-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.tool-dashboard-card.coming-soon {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}
.tool-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
}
.tool-card-icon svg {
    color: white;
}
.tool-dashboard-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-3);
}
.tool-dashboard-card p {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-6);
    flex-grow: 1;
}
.tool-card-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}
.feature-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}
.tool-card-action {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--primary);
    font-weight: 600;
    transition: gap 0.2s ease;
}
.tool-dashboard-card:hover .tool-card-action {
    gap: var(--space-4);
}
.coming-soon-badge {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    background: var(--gray-500);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

/* ===== Tool Pages Specific Styles ===== */
.tool-container {
    max-width: 1200px;
    margin: 0 auto;
}
.converter-card,
.examples-card,
.info-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-8);
    overflow: hidden;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}
.card-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}
.badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}
.card-body {
    padding: var(--space-8);
}
.vehicle-info {
    flex-grow: 1;
}
.vehicle-info label {
    display: block;
    font-weight: 600;
    color: var(--gray-900);
}
.vehicle-desc {
    font-size: 0.875rem;
    color: var(--gray-500);
}
.input-hint {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--space-1);
}

/* Tab Styles */
.sight-tabs,
.los-tabs {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    border-bottom: 2px solid var(--gray-200);
}
.sight-tab,
.los-tab {
    padding: var(--space-3) var(--space-6);
    background: transparent;
    border: none;
    color: var(--gray-600);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}
.sight-tab:hover,
.los-tab:hover {
    color: var(--primary);
}
.sight-tab.active,
.los-tab.active {
    color: var(--primary);
}
.sight-tab.active::after,
.los-tab.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

/* LOS Scale */
.los-scale {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-6);
}
.los-item {
    flex: 1;
    text-align: center;
    padding: var(--space-4);
    background: var(--gray-100);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}
.los-item.active {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}
.los-item[data-los="A"] { background: #10B981; color: white; }
.los-item[data-los="B"] { background: #34D399; color: white; }
.los-item[data-los="C"] { background: #FCD34D; color: var(--gray-800); }
.los-item[data-los="D"] { background: #FB923C; color: white; }
.los-item[data-los="E"] { background: #F87171; color: white; }
.los-item[data-los="F"] { background: #EF4444; color: white; }
.los-letter {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-1);
}
.los-range {
    font-size: 0.75rem;
}
.los-grade {
    display: inline-block;
    width: 80px;
    height: 80px;
    line-height: 80px;
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
}
.los-description {
    color: var(--gray-600);
    margin-bottom: var(--space-6);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    font-size: 0.875rem;
}
.breadcrumb a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s ease;
}
.breadcrumb a:hover {
    color: white;
}
.breadcrumb span {
    color: var(--gray-400);
}

/* Compact header for tool pages */
.page-header.compact {
    padding: var(--space-12) 0;
}
.page-header.compact .page-title {
    font-size: 2.5rem;
}

/* Tool input styles */
.pcu-inputs,
.queue-inputs,
.sight-inputs,
.los-inputs {
    display: grid;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}
.vehicle-row {
    display: grid;
    grid-template-columns: 1fr 120px 100px;
    gap: var(--space-4);
    align-items: center;
}
.vehicle-input,
.queue-input,
.sight-input,
.los-input {
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
}
.vehicle-input:focus,
.queue-input:focus,
.sight-input:focus,
.los-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.pcu-factor {
    color: var(--gray-600);
    font-weight: 600;
}
.pcu-controls,
.queue-controls {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}
.pcu-results,
.queue-results,
.sight-result,
.los-result {
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}
.result-summary {
    margin-bottom: var(--space-6);
}
.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--gray-200);
}
.result-row:last-child {
    border-bottom: none;
}
.result-row.highlight {
    background: white;
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary);
}
.result-label {
    font-weight: 600;
    color: var(--gray-700);
}
.result-value {
    font-weight: 700;
    color: var(--gray-900);
    font-size: 1.125rem;
}
.chart-container {
    padding-top: var(--space-6);
    border-top: 1px solid var(--gray-200);
}
.chart-container h4 {
    margin-bottom: var(--space-4);
}

/* Example buttons */
.example-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-3);
}
.example-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}
.example-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
}
.example-btn svg {
    color: var(--primary);
}

/* Info card */
.info-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}
.info-header svg {
    color: var(--primary);
}
.info-content {
    padding: var(--space-6);
}
.info-content ul {
    list-style: none;
    padding: 0;
    margin: var(--space-4) 0;
}
.info-content li {
    padding: var(--space-2) 0;
    padding-left: var(--space-8);
    position: relative;
}
.info-content li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}
.accuracy-note {
    padding: var(--space-4);
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-sm);
    margin-top: var(--space-4);
}
.accuracy-note strong {
    color: var(--primary);
}

/* Tools grid compact */
.tools-grid.compact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}
.tool-link-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    text-align: center;
    transition: all 0.2s ease;
}
.tool-link-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.tool-link-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
}
.tool-link-icon svg {
    color: white;
}
.tool-link-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}
.tool-link-card p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}