@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ============================================================
   Hex — "Blueprint" technical portfolio
   Design tokens
   ============================================================ */
:root {
  --bg:        #0A0E16;  /* near-black navy */
  --grid:      #1B2B3A;  /* faint hairlines */
  --cyan:      #4FD6FF;  /* primary accent */
  --steel:     #2D6E9E;  /* secondary accent */
  --text:      #E7EEF5;  /* primary text */
  --muted:     #7C8CA0;  /* secondary text */
  --panel:     #0E1420;  /* card surface, just above bg */

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;

  --fs-xs: 0.75rem;    /* 12 mono labels */
  --fs-sm: 0.9375rem;  /* 15 */
  --fs-md: 1.0625rem;  /* 17 body */
  --fs-lg: 1.375rem;   /* 22 */
  --fs-xl: 2rem;       /* 32 */
  --fs-2xl: 3.25rem;   /* 52 hero */

  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 16px;
  --sp-4: 24px; --sp-5: 48px; --sp-6: 80px; --sp-7: 120px;

  --maxw: 1040px;
  --bracket: 14px; /* corner bracket arm length */
}

/* ============================================================
   Reset
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;

  /* faint horizontal lines only */
  background-image: linear-gradient(var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: center top;
}
/* dim the grid so it never competes with content */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1;
  background: radial-gradient(ellipse at 50% 0%, rgba(10,14,22,0.55) 0%, var(--bg) 70%);
  pointer-events: none;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 4px; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; color: var(--text); margin: 0; }
ul { padding-left: 1.2em; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* mono functional label */
.label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
/* coordinate annotation marker */
.coord {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0.55;
  display: inline-block;
  margin-bottom: var(--sp-2);
}

/* ============================================================
   Shell
   ============================================================ */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--sp-4); }

.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,14,22,0.82);
  backdrop-filter: blur(10px);
}
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: var(--sp-3) var(--sp-4);
  display: flex; align-items: center; gap: var(--sp-4);
  flex-wrap: wrap;
}
.brand {
  font-family: var(--font-display);
  font-weight: 700; font-size: var(--fs-lg);
  color: var(--text); white-space: nowrap; letter-spacing: -0.01em;
}
.brand .dot { color: var(--cyan); }

.nav { display: flex; gap: var(--sp-1); flex-wrap: wrap; flex: 1; }
.nav a {
  color: var(--muted);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  padding: var(--sp-1) var(--sp-3);
  border-radius: 3px;
  transition: color .2s, background-color .2s, box-shadow .2s;
}
.nav a:hover {
  color: var(--text);
  background: rgba(79,214,255,0.06);
  text-decoration: none;
}
.nav a.active { color: var(--cyan); }
.nav a.active::before {
  content: "·"; color: var(--cyan); margin-right: 4px;
}

.lang-toggle {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--steel);
  border-radius: 3px;
  padding: 6px var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  transition: background-color .2s, color .2s;
  white-space: nowrap; min-height: 34px;
}
.lang-toggle:hover {
  background: var(--cyan);
  color: var(--bg);
  box-shadow: 0 0 10px rgba(79,214,255,0.35);
}

/* ============================================================
   Views
   ============================================================ */
.view { display: none; padding: var(--sp-7) 0 var(--sp-7); }
.view.active { display: block; animation: fade .3s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.section { margin-top: var(--sp-7); }
.section-head { margin-bottom: var(--sp-5); }
.section-head h2 { font-size: var(--fs-xl); }
.section-head .sub { color: var(--muted); font-size: var(--fs-sm); margin-top: var(--sp-2); }

/* Hero */
.hero { padding-top: var(--sp-4); }
.hero h1 {
  font-size: var(--fs-2xl);
  letter-spacing: -0.02em;
  max-width: 18ch;
  margin-bottom: var(--sp-3);
}
.hero .role-sub {
  color: var(--muted);
  font-size: var(--fs-lg);
  font-weight: 300;
  max-width: 50ch;
}
.hero .accent { color: var(--cyan); }

/* Skills / stack tags */
.tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--grid);
  padding: 6px var(--sp-3);
  border-radius: 3px;
  transition: border-color .2s, color .2s, background-color .2s;
}
.tag:hover {
  border-color: var(--steel);
  color: var(--cyan);
  background: rgba(45,110,158,0.15);
}

/* ============================================================
   Spec-sheet panels (project cards) — corner brackets only
   ============================================================ */
.cards { display: grid; gap: var(--sp-4); grid-template-columns: 1fr; }
@media (min-width: 720px) { .cards { grid-template-columns: 1fr 1fr; } }

.card {
  position: relative;
  background: var(--panel);
  padding: var(--sp-4);
  display: flex; flex-direction: column; gap: var(--sp-3);
  transition: transform .2s, box-shadow .2s, background-color .2s;
}
.card:hover {
  transform: translateY(-2px);
  background: rgba(14,20,32,0.95);
  box-shadow: 0 4px 24px rgba(79,214,255,0.07), 0 1px 6px rgba(0,0,0,0.4);
}
/* cyan corner brackets via pseudo-elements */
.card::before, .card::after {
  content: "";
  position: absolute;
  width: var(--bracket); height: var(--bracket);
  pointer-events: none;
}
.card::before { top: 0; left: 0;  border-top: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }
.card::after  { bottom: 0; right: 0; border-bottom: 1px solid var(--cyan); border-right: 1px solid var(--cyan); }
/* second pair of brackets via a child span */
.card .corners::before, .card .corners::after {
  content: "";
  position: absolute;
  width: var(--bracket); height: var(--bracket);
  pointer-events: none;
}
.card .corners::before { top: 0; right: 0; border-top: 1px solid var(--cyan); border-right: 1px solid var(--cyan); }
.card .corners::after  { bottom: 0; left: 0; border-bottom: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }

.card .name { font-family: var(--font-display); font-size: var(--fs-lg); }
.card .desc { margin: 0; color: var(--text); font-size: var(--fs-sm); }
.card .tags { margin-top: var(--sp-1); }
.card .foot-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3); margin-top: auto; padding-top: var(--sp-3);
}
.status { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.08em; text-transform: uppercase; }
.status::before { content: "● "; }
.status.active   { color: var(--cyan); }
.status.shipped  { color: var(--steel); }
.status.archived { color: var(--muted); }

.more-link {
  display: inline-block;
  margin-top: var(--sp-5);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  transition: color .2s, letter-spacing .2s;
}
.more-link:hover { color: var(--cyan); letter-spacing: 0.14em; text-decoration: none; }

/* ============================================================
   Contact
   ============================================================ */
.links { list-style: none; padding: 0; display: grid; gap: var(--sp-3); max-width: 520px; }
.links a {
  position: relative;
  display: flex; justify-content: space-between; gap: var(--sp-3);
  background: var(--panel);
  padding: var(--sp-3) var(--sp-4);
  color: var(--text);
  transition: color .2s, background-color .2s, border-left-color .2s, box-shadow .2s;
  border-left: 1px solid var(--grid);
}
.links a:hover {
  color: var(--cyan);
  background: rgba(79,214,255,0.04);
  border-left-color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--cyan);
  text-decoration: none;
}
.links a .handle { color: var(--muted); font-family: var(--font-mono); font-size: var(--fs-xs); }
.links .copy-btn {
  position: relative;
  display: flex; justify-content: space-between; gap: var(--sp-3);
  width: 100%;
  background: var(--panel);
  padding: var(--sp-3) var(--sp-4);
  color: var(--text);
  border: none;
  border-left: 1px solid var(--grid);
  cursor: pointer;
  font-family: var(--font-body); font-size: var(--fs-sm);
  text-align: left;
  transition: color .2s, background-color .2s, border-left-color .2s, box-shadow .2s;
}
.links .copy-btn:hover {
  color: var(--cyan);
  background: rgba(79,214,255,0.04);
  border-left-color: var(--cyan);
  box-shadow: inset 3px 0 0 var(--cyan);
}
.links .copy-btn .handle { color: var(--muted); font-family: var(--font-mono); font-size: var(--fs-xs); transition: color .2s; }
.links .copy-btn.copied .handle { color: var(--cyan); }

/* ============================================================
   Support
   ============================================================ */
.support-context { max-width: 60ch; color: var(--text); margin-bottom: var(--sp-5); }
.amounts { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-bottom: var(--sp-3); }
.amount-btn {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--grid);
  border-radius: 3px;
  padding: var(--sp-2) var(--sp-4);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  transition: border-color .2s, background-color .2s, color .2s;
  min-width: 76px; min-height: 48px;
}
.amount-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(79,214,255,0.06);
  box-shadow: 0 0 12px rgba(79,214,255,0.12);
}
.amount-btn[aria-pressed="true"] { background: var(--cyan); color: var(--bg); border-color: var(--cyan); }

.custom-row { display: flex; gap: var(--sp-2); align-items: center; flex-wrap: wrap; margin-bottom: var(--sp-5); }
.custom-row label { color: var(--muted); font-size: var(--fs-sm); }
.custom-row .cur { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--muted); }
.custom-row input {
  background: var(--bg);
  border: 1px solid var(--grid);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  padding: var(--sp-2) var(--sp-3);
  border-radius: 3px; width: 150px; min-height: 48px;
}
.custom-row input:focus { border-color: var(--cyan); }

.pay-methods { display: grid; gap: var(--sp-3); max-width: 580px; }
.pay-btn {
  display: flex; align-items: center; gap: var(--sp-3);
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: 3px;
  padding: var(--sp-4);
  color: var(--text); text-align: left;
  transition: border-color .2s, background-color .2s, box-shadow .2s;
  min-height: 48px;
}
.pay-btn:hover {
  border-color: var(--steel);
  background: rgba(45,110,158,0.08);
  box-shadow: 0 2px 12px rgba(45,110,158,0.12);
}
.pay-btn.primary { border-color: var(--cyan); }
.pay-btn.primary:hover {
  background: rgba(79,214,255,0.07);
  box-shadow: 0 0 18px rgba(79,214,255,0.14);
  border-color: var(--cyan);
}
.pay-btn.soon { opacity: 0.6; border-style: dashed; }
.pay-btn.soon:hover { border-color: var(--steel); background: rgba(45,110,158,0.05); box-shadow: none; }
.pay-btn.soon .pay-note { color: var(--cyan); letter-spacing: 0.05em; }
.pay-btn .icon { width: 24px; height: 24px; flex-shrink: 0; color: var(--text); }
.pay-btn.primary .icon { color: var(--cyan); }
.pay-btn .pay-text { display: flex; flex-direction: column; gap: 2px; }
.pay-btn .pay-title { font-family: var(--font-display); font-weight: 600; color: var(--text); }
.pay-btn .pay-note { color: var(--muted); font-size: var(--fs-xs); }
.recommend { color: var(--cyan); font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.05em; }

.support-feedback {
  margin-top: var(--sp-3);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  min-height: 1.4em;
}

/* Footer */
.foot {
  border-top: 1px solid var(--grid);
  margin-top: var(--sp-7);
  padding: var(--sp-4) 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
}

/* ============================================================
   Commits
   ============================================================ */
.commits-bar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}
.commits-total { color: var(--muted); }
.commits-controls { display: flex; align-items: center; gap: var(--sp-2); }

.sort-btn {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: 3px;
  padding: 6px var(--sp-3);
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}
.sort-btn:hover { color: var(--cyan); border-color: var(--steel); }

#dateFilter {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: 3px;
  padding: 6px var(--sp-3);
  transition: border-color .2s;
  color-scheme: dark;
}
#dateFilter:focus { border-color: var(--cyan); outline: none; }

.clear-btn {
  font-size: var(--fs-md);
  color: var(--muted);
  background: transparent;
  border: none;
  padding: 0 var(--sp-1);
  line-height: 1;
  transition: color .2s;
}
.clear-btn:hover { color: var(--cyan); }

.commit-list {
  list-style: none; padding: 0;
  border-top: 1px solid var(--grid);
}
.commit-item {
  display: flex; flex-direction: column; gap: var(--sp-1);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--grid);
}
.commit-meta {
  display: flex; gap: var(--sp-3); align-items: center; flex-wrap: wrap;
}
.commit-repo {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--cyan);
  letter-spacing: 0.05em;
}
.commit-date {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--muted);
  letter-spacing: 0.04em;
}
.commit-msg {
  color: var(--text);
  font-size: var(--fs-sm);
  font-family: var(--font-body);
  text-decoration: none;
  word-break: break-word;
  transition: color .2s;
}
.commit-msg:hover { color: var(--cyan); text-decoration: none; }
.commit-empty {
  list-style: none;
  padding: var(--sp-5) 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
}

/* ============================================================
   RTL
   ============================================================ */
[dir="rtl"] body {
  font-family: var(--font-body); /* Inter has reasonable Arabic fallback; system Arabic kicks in */
}
[dir="rtl"] .nav a.active::before { margin-right: 0; margin-left: 4px; }
[dir="rtl"] .links a { border-left: none; border-right: 1px solid var(--grid); }
[dir="rtl"] .links a:hover { border-right-color: var(--cyan); }
[dir="rtl"] .links a .handle { direction: ltr; }
[dir="rtl"] .links .copy-btn { border-left: none; border-right: 1px solid var(--grid); text-align: right; }
[dir="rtl"] .links .copy-btn:hover { border-right-color: var(--cyan); box-shadow: inset -3px 0 0 var(--cyan); }
[dir="rtl"] .links .copy-btn .handle { direction: ltr; }
[dir="rtl"] .coord { direction: ltr; }
[dir="rtl"] .commits-bar { flex-direction: row-reverse; }
[dir="rtl"] .commits-controls { flex-direction: row-reverse; }
[dir="rtl"] .commit-meta { flex-direction: row-reverse; }

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .view.active { animation: none; }
  .card:hover { transform: none; }
  * { transition: none !important; }
}