/* ============================================================
   charraki.com — dark terminal theme
   Plain CSS, no frameworks. Monospace system font stack.
   ============================================================ */

:root {
  --bg: #0a0e14;
  --bg-panel: #0f1520;
  --bg-panel-2: #131b29;
  --border: #1f2a3a;
  --text: #c9d4e3;
  --text-dim: #7d8ca1;
  --green: #5af78e;
  --cyan: #57c7ff;
  --amber: #f3f99d;
  --red: #ff5c57;
  --user-msg: #57c7ff;
  --ai-msg: #c9d4e3;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas,
          "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
}

/* ---------- accessibility helpers ---------- */

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green);
  color: #000;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; }

a { color: var(--cyan); }
a:hover { color: var(--green); }

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

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 14, 20, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.site-header nav {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.6rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.brand {
  color: var(--green);
  text-decoration: none;
  font-weight: bold;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0 0 0 auto;
  padding: 0;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--green); }

/* ---------- layout ---------- */

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

.section { margin-top: 4rem; }

.section h2 {
  color: var(--amber);
  font-size: 1.15rem;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 0.5rem;
}

.prompt { color: var(--green); }

/* ---------- terminal window ---------- */

.hero { margin-top: 1.5rem; }

.terminal {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  background: var(--bg-panel-2);
  border-bottom: 1px solid var(--border);
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-red { background: var(--red); }
.dot-yellow { background: var(--amber); }
.dot-green { background: var(--green); }

.terminal-title {
  margin-left: 0.75rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.terminal-clear {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.15rem 0.6rem;
  cursor: pointer;
}
.terminal-clear:hover { color: var(--red); border-color: var(--red); }

.terminal-body {
  padding: 1.2rem 1.2rem 1rem;
  min-height: 340px;
  display: flex;
  flex-direction: column;
}

.banner-text p { margin: 0.35rem 0; }
.banner-text strong { color: var(--cyan); }

/* caret shown while the banner is "typing" */
.banner-text.typing::after {
  content: "▮";
  color: var(--green);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- chat ---------- */

.chat-log {
  flex: 1;
  overflow-y: auto;
  max-height: 50vh;
  margin: 0.75rem 0;
}

.msg {
  margin: 0.75rem 0;
  white-space: pre-wrap;       /* preserve AI line breaks safely */
  overflow-wrap: break-word;
}

.msg-user { color: var(--user-msg); }
.msg-user::before { content: "you@visitor:~$ "; color: var(--green); }

.msg-ai { color: var(--ai-msg); }
.msg-ai::before { content: "[ai] "; color: var(--amber); }

.msg-error { color: var(--red); }
.msg-error::before { content: "[error] "; }

.retry-btn {
  display: inline-block;
  margin-top: 0.4rem;
  background: transparent;
  border: 1px solid var(--red);
  border-radius: 4px;
  color: var(--red);
  font-family: var(--mono);
  padding: 0.2rem 0.7rem;
  cursor: pointer;
}
.retry-btn:hover { background: var(--red); color: #000; }

/* streaming caret on the AI message being written */
.msg-ai.streaming::after {
  content: "▮";
  color: var(--green);
  animation: blink 1s steps(1) infinite;
}

/* "thinking…" indicator before first token arrives */
.thinking { color: var(--text-dim); }
.thinking::after {
  content: "";
  animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
  0%   { content: ""; }
  25%  { content: "."; }
  50%  { content: ".."; }
  75%  { content: "..."; }
}

/* ---------- suggestions ---------- */

.suggestions { margin: 0.5rem 0 1rem; }
.suggestions-label { color: var(--text-dim); margin: 0 0 0.5rem; }

.suggestion {
  display: inline-block;
  margin: 0.25rem 0.4rem 0.25rem 0;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.suggestion:hover, .suggestion:focus-visible {
  border-color: var(--green);
  color: var(--green);
}

/* ---------- input form ---------- */

.chat-form {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  border-top: 1px dashed var(--border);
  padding-top: 0.9rem;
}

.chat-form .prompt { padding-top: 0.35rem; white-space: nowrap; }

#chat-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  resize: none;
  padding: 0.35rem 0;
  max-height: 8rem;
}
#chat-input:focus { outline: none; }
#chat-input::placeholder { color: var(--text-dim); opacity: 0.7; }

.send-btn {
  background: var(--green);
  border: none;
  border-radius: 4px;
  color: #04140a;
  font-family: var(--mono);
  font-weight: bold;
  padding: 0.4rem 1rem;
  cursor: pointer;
}
.send-btn:hover:not(:disabled) { filter: brightness(1.15); }
.send-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.chat-status {
  min-height: 1.2rem;
  margin: 0.4rem 0 0;
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* ---------- cards / projects ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--cyan); transform: translateY(-2px); }

.card h3 { margin-top: 0; color: var(--cyan); }
.card-tags { color: var(--text-dim); font-size: 0.8rem; margin-bottom: 0; }

/* ---------- skills ---------- */

.skills-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.skills-list li {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.35rem 0.8rem;
  color: var(--green);
}

/* ---------- experience timeline ---------- */

.timeline {
  list-style: none;
  padding: 0;
  margin-top: 1.25rem;
  border-left: 2px solid var(--border);
}

.timeline li {
  position: relative;
  padding: 0 0 1.5rem 1.5rem;
}

.timeline li::before {
  content: "●";
  position: absolute;
  left: -0.42rem;
  color: var(--green);
  background: var(--bg);
}

.timeline h3 { margin: 0; color: var(--cyan); }
.timeline-meta { color: var(--text-dim); font-size: 0.85rem; margin: 0.2rem 0 0.5rem; }

/* ---------- contact ---------- */

.contact-list { list-style: none; padding: 0; }
.contact-list li { margin: 0.4rem 0; }

.cv-btn {
  display: inline-block;
  margin-top: 1rem;
  background: transparent;
  border: 1px solid var(--green);
  border-radius: 6px;
  color: var(--green);
  text-decoration: none;
  padding: 0.55rem 1.2rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.cv-btn:hover, .cv-btn:focus-visible { background: var(--green); color: #04140a; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.85rem;
}

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  body { font-size: 14px; }
  .terminal-body { min-height: 280px; padding: 0.9rem; }
  .chat-form .prompt { display: none; }   /* save space on small screens */
  .nav-links { gap: 0.7rem; font-size: 0.85rem; }
  .chat-log { max-height: 45vh; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .banner-text.typing::after,
  .msg-ai.streaming::after { animation: none; }
  .card:hover { transform: none; }
}