/* Global Styles */
body { margin: 0; font-family: sans-serif; background-color: #0f172a; color: white; line-height: 1.6; }
a { text-decoration: none; transition: 0.2s; }

/* Navigation Bar */
header { background-color: #1e293b; border-bottom: 1px solid #334155; padding: 15px 50px; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 100; }
.logo { font-size: 24px; font-weight: bold; color: white; letter-spacing: 0.5px; }
.logo span { color: #3b82f6; }
nav { display: flex; align-items: center; gap: 30px; }
nav a.nav-link { color: #94a3b8; font-weight: 500; }
nav a.nav-link:hover { color: white; }

/* Buttons */
.btn { padding: 10px 24px; border-radius: 6px; font-weight: bold; cursor: pointer; text-align: center; border: none; }
.btn-primary { background-color: #3b82f6; color: white; }
.btn-primary:hover { background-color: #2563eb; }
.btn-outline { background-color: transparent; color: #e2e8f0; border: 1px solid #4a5568; }
.btn-outline:hover { border-color: #94a3b8; background-color: #1e293b; }

/* Hero Section */
.hero { padding: 100px 20px; text-align: center; max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: 48px; margin-bottom: 20px; line-height: 1.2; }
.hero p { font-size: 20px; color: #94a3b8; margin-bottom: 40px; }
.hero-buttons { display: flex; justify-content: center; gap: 20px; }
.hero-buttons .btn { font-size: 18px; padding: 15px 30px; }

/* Articles Section */
.articles-section { padding: 60px 50px; background-color: #1e293b; border-top: 1px solid #334155; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 { font-size: 36px; margin-bottom: 10px; }
.section-header p { color: #94a3b8; font-size: 18px; }

.article-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; max-width: 1200px; margin: 0 auto; }
.article-card { background-color: #0f172a; border: 1px solid #334155; border-radius: 8px; padding: 30px; transition: transform 0.2s, border-color 0.2s; }
.article-card:hover { transform: translateY(-5px); border-color: #3b82f6; }
.article-card span.tag { background-color: #1e293b; color: #3b82f6; padding: 4px 10px; border-radius: 4px; font-size: 12px; font-weight: bold; text-transform: uppercase; letter-spacing: 0.5px; }
.article-card h3 { font-size: 22px; margin: 15px 0; color: white; }
.article-card p { color: #94a3b8; margin-bottom: 20px; }
.article-card a { color: #3b82f6; font-weight: bold; }
.article-card a:hover { text-decoration: underline; }

/* Footer */
footer { padding: 30px; text-align: center; color: #64748b; border-top: 1px solid #334155; font-size: 14px; }

/* Tool Dashboard Grid */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin-bottom: 30px; margin-top: 20px; }
.tool-card { border: 1px solid #334155; padding: 20px; background-color: #0f172a; cursor: pointer; transition: 0.2s; border-radius: 8px; }
.tool-card:hover { border-color: #3b82f6; transform: translateY(-2px); }
.tool-card h3 { color: white; margin-top: 0; font-size: 18px; border-bottom: 1px solid #334155; padding-bottom: 10px; }
.tool-card p { color: #94a3b8; font-size: 14px; line-height: 1.5; margin-bottom: 0; }