/* Base Reset */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color: #0f172a; background: #f8fafc; line-height: 1.6; }
a { color: #0ea5e9; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.section { padding: 64px 0; background: #f8fafc; }
.section.alt { background: #ffffff; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.9); backdrop-filter: blur(8px); border-bottom: 1px solid #e2e8f0; }
.brand { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; }
.logo { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 8px; background: #0ea5e9; color: #fff; font-weight: 700; letter-spacing: 0.5px; }
.nav a { margin-left: 16px; color: #0f172a; font-weight: 600; }
.nav a:hover { color: #0ea5e9; }

/* Hero */
.hero { padding: 72px 0 40px; background: linear-gradient(180deg, #e0f2fe 0%, rgba(224,242,254,0) 60%); }
.hero-inner { display: grid; grid-template-columns: 1fr; gap: 24px; }
.hero h1 { margin: 0; font-size: 40px; line-height: 1.15; letter-spacing: -0.02em; }
.subtitle { margin: 6px 0 14px; font-size: 18px; color: #334155; }
.quick-info { list-style: none; padding: 0; margin: 0 0 16px; display: flex; flex-wrap: wrap; gap: 12px 20px; color: #334155; }
.social a { display: inline-block; margin-right: 14px; font-weight: 600; }
.summary { margin-top: 16px; max-width: 800px; color: #1f2937; }

/* Cards */
.card { background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 18px 18px; margin: 16px 0; box-shadow: 0 1px 1px rgba(0,0,0,0.02); }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.card h3 { margin: 0; font-size: 18px; }
.meta { color: #64748b; font-size: 14px; white-space: nowrap; }
.card ul { margin: 8px 0 0; padding-left: 18px; }
.card li { margin: 6px 0; }

/* Education */
.edu-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.modules { margin: 8px 0 0; color: #334155; }

/* Skills */
.skills-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.skill-group { background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 14px; }
.skill-group h4 { margin: 0 0 10px; font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { display: inline-block; padding: 6px 10px; border: 1px solid #e2e8f0; border-radius: 999px; background: #f8fafc; font-size: 13px; color: #0f172a; }

/* Languages */
.lang-list { margin: 0; padding-left: 18px; }

/* Contact */
.contact-form { display: grid; grid-template-columns: 1fr; gap: 10px; max-width: 700px; }
.contact-form input, .contact-form textarea { padding: 12px 12px; border: 1px solid #cbd5e1; border-radius: 10px; background: #ffffff; font: inherit; color: #0f172a; }
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid #93c5fd; border-color: #93c5fd; }
.contact-form button { padding: 12px 16px; border: 0; border-radius: 10px; background: #0ea5e9; color: #fff; font-weight: 700; cursor: pointer; }
.contact-form button:hover { background: #0284c7; }
.contact-form .hp { display: none; }
.contact-note { color: #475569; margin-top: 10px; }

/* Footer */
.site-footer { border-top: 1px solid #e2e8f0; background: #ffffff; }
.site-footer .container { padding: 18px 0; }
.site-footer p { margin: 0; color: #64748b; }

/* Headings */
h2 { margin: 0 0 14px; font-size: 24px; letter-spacing: -0.01em; }

/* Responsive */
@media (min-width: 720px) {
  .hero h1 { font-size: 52px; }
  .edu-grid { grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1040px) {
  .skills-grid { grid-template-columns: 1fr 1fr 1fr; }
}