/* IMTerm Site - style.css */
:root {
  --navy: #1E2761;
  --dark-navy: #141B3D;
  --ice: #CADCFC;
  --accent: #4FC3F7;
  --green: #33FF33;
  --green-dark: #2E7D32;
  --white: #FFFFFF;
  --light-bg: #F5F7FA;
  --gray: #64748B;
  --dark-text: #1E293B;
  --terminal-bg: #0A0A0A;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; color: var(--dark-text); line-height: 1.6; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
.nav { background: var(--dark-navy); padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 60px; position: sticky; top: 0; z-index: 100; }
.nav-brand { display: flex; align-items: center; gap: 10px; color: var(--white); font-size: 1.3rem; font-weight: 700; text-decoration: none; }
.nav-brand img { height: 36px; }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: var(--ice); font-size: 0.95rem; text-decoration: none; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

/* Hero */
.hero { background: linear-gradient(135deg, var(--dark-navy), var(--navy)); color: var(--white); padding: 4rem 2rem; text-align: center; }
.hero h1 { font-size: 3.5rem; margin-bottom: 0.5rem; }
.hero .subtitle { font-size: 1.3rem; color: var(--ice); margin-bottom: 0.5rem; }
.hero .tagline { font-size: 1rem; color: var(--accent); font-style: italic; margin-bottom: 2rem; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 0.75rem 2rem; border-radius: 6px; font-weight: 600; font-size: 1rem; text-decoration: none; transition: all 0.2s; }
.btn-primary { background: var(--accent); color: var(--dark-navy); }
.btn-primary:hover { background: #81D4FA; text-decoration: none; }
.btn-secondary { background: transparent; color: var(--white); border: 2px solid var(--ice); }
.btn-secondary:hover { background: rgba(255,255,255,0.1); text-decoration: none; }
.btn-green { background: var(--green-dark); color: var(--white); }
.btn-green:hover { background: #388E3C; text-decoration: none; }

/* Sections */
.section { padding: 3rem 2rem; max-width: 1100px; margin: 0 auto; }
.section-dark { background: var(--light-bg); }
.section h2 { font-size: 2rem; color: var(--navy); margin-bottom: 1.5rem; text-align: center; }
.section h3 { font-size: 1.3rem; color: var(--navy); margin-bottom: 0.5rem; }

/* Feature Grid */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.feature-card { background: var(--white); border-radius: 10px; padding: 1.5rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.feature-card .icon { font-size: 2rem; margin-bottom: 0.5rem; }
.feature-card h3 { margin-bottom: 0.5rem; }
.feature-card p { color: var(--gray); font-size: 0.95rem; }
.badge { display: inline-block; background: var(--accent); color: var(--dark-navy); font-size: 0.7rem; font-weight: 700; padding: 2px 8px; border-radius: 10px; margin-left: 6px; vertical-align: middle; }

/* Protocol Cards */
.protocol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin: 2rem 0; }
.protocol-card { background: var(--terminal-bg); border-radius: 10px; padding: 1.5rem; text-align: center; border: 1px solid #333; }
.protocol-card h3 { color: var(--accent); font-size: 1.2rem; }
.protocol-card .proto-name { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.3rem; }
.protocol-card p { color: var(--ice); font-size: 0.9rem; }
.proto-5250 .proto-name { color: #2196F3; }
.proto-3270 .proto-name { color: #4CAF50; }
.proto-vt .proto-name { color: #FF9800; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.pricing-card { background: var(--white); border-radius: 10px; padding: 2rem; box-shadow: 0 2px 12px rgba(0,0,0,0.1); text-align: center; border: 2px solid transparent; }
.pricing-card.featured { border-color: var(--accent); }
.pricing-card .plan-name { font-size: 1.3rem; font-weight: 700; color: var(--navy); }
.pricing-card .price { font-size: 2.5rem; font-weight: 700; color: var(--dark-text); margin: 0.5rem 0; }
.pricing-card .price-note { color: var(--gray); font-size: 0.9rem; margin-bottom: 1rem; }
.pricing-card ul { list-style: none; text-align: left; margin-bottom: 1.5rem; }
.pricing-card li { padding: 0.3rem 0; color: var(--dark-text); font-size: 0.95rem; }
.pricing-card li::before { content: "\2713 "; color: var(--green-dark); font-weight: 700; }

/* Table */
.comparison-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
.comparison-table th { background: var(--navy); color: var(--white); padding: 10px; font-size: 0.9rem; }
.comparison-table td { padding: 8px 10px; border-bottom: 1px solid #e2e8f0; font-size: 0.9rem; }
.comparison-table tr:nth-child(even) { background: var(--light-bg); }
.yes { color: var(--green-dark); font-weight: 700; }
.no { color: #C62828; }
.partial { color: #F57F17; }

/* Terminal Preview */
.terminal-preview { background: var(--terminal-bg); border-radius: 10px; padding: 1.5rem; font-family: 'Courier New', monospace; color: var(--green); font-size: 0.85rem; line-height: 1.4; overflow-x: auto; max-width: 700px; margin: 1.5rem auto; border: 1px solid #333; }

/* Download Cards */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.download-card { background: var(--white); border-radius: 10px; padding: 1.5rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); text-align: center; }
.download-card .os-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.download-card h3 { margin-bottom: 0.5rem; }
.download-card p { color: var(--gray); font-size: 0.9rem; margin-bottom: 1rem; }

/* Footer */
.footer { background: var(--dark-navy); color: var(--ice); padding: 2rem; text-align: center; font-size: 0.85rem; }
.footer a { color: var(--accent); }
.footer .footer-links { margin-bottom: 0.5rem; }
.footer .footer-links a { margin: 0 0.5rem; }

/* Screenshots */
.screenshot { max-width: 100%; border-radius: 10px; box-shadow: 0 4px 20px rgba(0,0,0,0.3); margin: 1.5rem auto; display: block; }
.screenshot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 1.5rem 0; }
.screenshot-grid img { width: 100%; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.2); }
.screenshot-caption { text-align: center; color: var(--gray); font-size: 0.85rem; margin-top: 0.5rem; }

/* Responsive */
@media (max-width: 768px) {
  .screenshot-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .protocol-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 0.8rem; }
  .nav-links a { font-size: 0.85rem; }
}