/* ==========================================
   TrailForge — Long Distance Trip Planner
   Complete CSS Stylesheet
   ========================================== */

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

/* CSS Variables */
:root {
    --primary: #1a3a52;
    --secondary: #2d6a4f;
    --accent: #e76f51;
    --light: #f8f9fa;
    --text: #2b2d42;
    --card-bg: #ffffff;
    --border: #e9ecef;
    --shadow: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    color: var(--text);
    background-color: var(--light);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.site-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
}

.logo-icon {
    font-size: 1.8rem;
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.main-nav a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text);
    padding: 8px 0;
    position: relative;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
    padding: 5px;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #2a5a7a 50%, var(--secondary) 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    position: relative;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.95;
    position: relative;
}

.hero .btn-primary {
    position: relative;
    background: var(--accent);
    color: white;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.hero .btn-primary:hover {
    background: #d55a3f;
    transform: translateY(-2px);
    color: white;
}

/* ==========================================
   Sections
   ========================================== */
.section {
    padding: 70px 0;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: #6c757d;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 50px;
}

/* ==========================================
   Tools Grid
   ========================================== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    transition: var(--transition);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}

.tool-icon {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.tool-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.tool-card p {
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 15px;
    line-height: 1.5;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--accent);
    font-weight: 500;
    font-size: 0.9rem;
}

.tool-link:hover {
    gap: 10px;
}

/* ==========================================
   Articles Grid
   ========================================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.article-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.article-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.article-body {
    padding: 18px;
}

.article-category {
    display: inline-block;
    background: var(--accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.article-card p {
    font-size: 0.9rem;
    color: #6c757d;
    line-height: 1.5;
}

/* ==========================================
   Breadcrumb
   ========================================== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

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

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

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

/* ==========================================
   Tool Detail
   ========================================== */
.tool-detail {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

.tool-header {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.tool-category {
    display: inline-block;
    background: var(--secondary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tool-header h1 {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.tool-header p {
    color: #6c757d;
    font-size: 1rem;
}

/* ==========================================
   Forms
   ========================================== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: white;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(231, 111, 81, 0.1);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

/* ==========================================
   Buttons
   ========================================== */
.btn-primary {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 11px 24px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: #d55a3f;
    color: white;
    transform: translateY(-2px);
}

/* ==========================================
   Info Grid & Cards
   ========================================== */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.info-card {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
}

.info-card h4 {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.info-card p {
    font-size: 0.9rem;
    color: #6c757d;
}

.result-box {
    background: var(--light);
    border-left: 4px solid var(--accent);
    padding: 14px 18px;
    border-radius: 8px;
    margin: 20px 0;
}

.result-box h4 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.result-box p {
    margin-bottom: 8px;
}

.result-box strong {
    color: var(--accent);
}

/* ==========================================
   Article Detail
   ========================================== */
.article-detail {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 36px;
    border: 1px solid var(--border);
}

.featured-img {
    width: 100%;
    height: 360px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 30px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.article-content {
    line-height: 1.85;
}

.article-content h2 {
    font-size: 1.75rem;
    color: var(--primary);
    margin: 35px 0 15px;
}

.article-content h3 {
    font-size: 1.35rem;
    color: var(--primary);
    margin: 25px 0 12px;
}

.article-content p {
    margin-bottom: 18px;
}

.article-content ul,
.article-content ol {
    margin: 0 0 18px 25px;
}

.article-content li {
    margin-bottom: 8px;
}

.tip-box {
    background: var(--light);
    border: 2px solid var(--accent);
    padding: 16px 20px;
    border-radius: 10px;
    margin: 25px 0;
}

.tip-box h4 {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 8px;
}

/* ==========================================
   Page Content
   ========================================== */
.page-content {
    background: var(--card-bg);
    padding: 36px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    max-width: 800px;
    margin: 0 auto;
}

.page-content h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.page-content h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin: 30px 0 15px;
}

.page-content p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.page-content ul,
.page-content ol {
    margin: 0 0 15px 25px;
}

.page-content li {
    margin-bottom: 8px;
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
    background: var(--primary);
    color: white;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col a {
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    background: rgba(0,0,0,0.2);
    padding: 20px;
    text-align: center;
    margin-top: 50px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

.footer-bottom a {
    color: rgba(255,255,255,0.9);
}

/* ==========================================
   Related Links
   ========================================== */
.related-links {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.related-links h3 {
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.related-links ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
}

.related-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 500;
}

.related-links a:hover {
    color: var(--accent);
}

/* ==========================================
   Contact Form
   ========================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.contact-info p {
    margin-bottom: 20px;
    color: #6c757d;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.contact-method span {
    font-size: 1.2rem;
}

/* ==========================================
   Info Box
   ========================================== */
.info-box {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin: 25px 0;
}

.info-box h4 {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.info-box p {
    font-size: 0.95rem;
    color: #6c757d;
    margin: 0;
}

/* ==========================================
   Ad Placeholder
   ========================================== */
.ad-placeholder {
    background: var(--light);
    border: 1px dashed var(--border);
    padding: 20px;
    text-align: center;
    color: #6c757d;
    font-size: 0.9rem;
    border-radius: var(--radius);
    margin: 25px 0;
}

/* ==========================================
   Error Page
   ========================================== */
.error-page {
    text-align: center;
    padding: 100px 20px;
}

.error-page h1 {
    font-size: 6rem;
    color: var(--accent);
    margin-bottom: 20px;
}

.error-page h2 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.error-page p {
    color: #6c757d;
    margin-bottom: 30px;
}

/* ==========================================
   Utility Classes
   ========================================== */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.bg-light {
    background: var(--light);
}

.border-top {
    border-top: 1px solid var(--border);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .main-nav.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .tool-detail,
    .article-detail,
    .page-content {
        padding: 25px 20px;
    }

    .featured-img {
        height: 240px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 50px 15px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .tools-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}