/* ═══════════════════════════════════════════════════
   styles.css  —  Python Playground Portfolio
   ═══════════════════════════════════════════════════ */

/* ── Variables ─────────────────────────────────────── */
:root {
  --bg:       #0f1117;
  --surface:  #1a1d2e;
  --surface2: #252840;
  --accent:   #7c6af7;
  --accent2:  #a78bfa;
  --green:    #34d399;
  --red:      #f87171;
  --yellow:   #fbbf24;
  --text:     #e2e8f0;
  --muted:    #94a3b8;
  --border:   #2d3152;
}

/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* ══════════════════════════════════════════════════════
   HEADER
   ══════════════════════════════════════════════════════ */
.sticky-top {
  position: sticky;
  top: 0;
  z-index: 100;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.tagline {
  color: var(--muted);
  font-size: 0.875rem;
}

.status-badge {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
  background: var(--surface2);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  white-space: nowrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yellow);
  flex-shrink: 0;
  animation: pulse 1.5s infinite;
}
.status-dot.ready  { background: var(--green);  animation: none; }
.status-dot.hidden { display: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ══════════════════════════════════════════════════════
   TAB NAVIGATION
   ══════════════════════════════════════════════════════ */
.tab-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  padding: 0 2rem;
  gap: 0;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.85rem 1.4rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  letter-spacing: 0.01em;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--accent2);
  border-bottom-color: var(--accent2);
}

/* ══════════════════════════════════════════════════════
   TAB PANELS
   ══════════════════════════════════════════════════════ */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ══════════════════════════════════════════════════════
   PAGE WRAPPERS
   ══════════════════════════════════════════════════════ */
.page-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

/* ══════════════════════════════════════════════════════
   INFO TAB
   ══════════════════════════════════════════════════════ */

.info-img {
  display: block;
  margin: 0 auto 2rem;
  width: 90%;
  height: auto;
}

.info-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.info-section h2 {
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.info-bio {
  color: var(--text);
  line-height: 1.8;
  font-size: 0.97rem;
}

/* ══════════════════════════════════════════════════════
   PROJECTS TAB
   ══════════════════════════════════════════════════════ */
.projects-intro {
  margin-bottom: 2.5rem;
}

.projects-intro h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  background: linear-gradient(135deg, #e2e8f0, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.projects-intro p { color: var(--muted); font-size: 0.95rem; }
.projects-intro kbd {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.8rem;
  font-family: monospace;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 0.75rem;
  margin-top: 2.5rem;
}
.section-label:first-child { margin-top: 0; }

.blocks-stack { display: flex; flex-direction: column; gap: 1.5rem; }

/* ── Code Block ──────────────────────────────────────── */
.code-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.code-block:hover { border-color: var(--accent); }

.block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  flex-wrap: wrap;
}

.block-meta { flex: 1; min-width: 0; }

.block-title {
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.68rem;
  font-weight: 500;
  padding: 0.18rem 0.5rem;
  border-radius: 4px;
  background: rgba(124, 106, 247, 0.18);
  color: var(--accent2);
  border: 1px solid rgba(124, 106, 247, 0.3);
}

.block-desc {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 0.15rem;
}

.block-actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-shrink: 0;
}

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.9rem;
  border-radius: 7px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  font-family: inherit;
}

.btn-run {
  background: var(--accent);
  color: white;
}
.btn-run:hover:not(:disabled) { background: var(--accent2); transform: translateY(-1px); }
.btn-run:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-clear, .btn-reset {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.btn-clear:hover { color: var(--text); border-color: var(--muted); }
.btn-reset:hover { color: var(--yellow); border-color: var(--yellow); }

/* ── CodeMirror overrides ────────────────────────────── */
.editor-wrap { position: relative; }

.CodeMirror {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace !important;
  font-size: 13px !important;
  height: 220px !important;
  background: #282a36 !important;
  padding: 0.4rem 0;
}
.CodeMirror-scroll {
  min-height: 220px;
  overflow-y: scroll !important;
}

.run-hint {
  position: absolute;
  bottom: 8px;
  right: 10px;
  font-size: 0.68rem;
  color: rgba(148, 163, 184, 0.35);
  pointer-events: none;
  font-family: monospace;
}

/* ── Output area ─────────────────────────────────────── */
.output-area { border-top: 1px solid var(--border); background: #0d0f1a; }
.output-area.hidden { display: none; }

.output-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}
.output-bar span {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
}
.output-bar .timing {
  margin-left: auto;
  font-size: 0.68rem;
  color: rgba(148, 163, 184, 0.35);
}

.output-text {
  padding: 0.7rem 1.2rem;
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-size: 12.5px;
  white-space: pre-wrap;
  word-break: break-all;
  color: #a8ff78;
  line-height: 1.6;
  min-height: 20px;
}
.output-text.error { color: var(--red); }
.output-text:empty::before {
  content: '(no output)';
  color: rgba(148, 163, 184, 0.28);
  font-style: italic;
}

.output-images {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 1.2rem;
}
.output-images img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ══════════════════════════════════════════════════════
   CONTACT TAB
   ══════════════════════════════════════════════════════ */
.contact-intro {
  margin-bottom: 2.5rem;
}
.contact-intro h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #e2e8f0, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.contact-intro p { color: var(--muted); font-size: 0.95rem; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
@media (max-width: 580px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: border-color 0.2s;
  text-decoration: none;
  color: inherit;
}
.contact-card:hover { border-color: var(--accent); }
.contact-card .card-icon { font-size: 1.5rem; margin-bottom: 0.25rem; }
.contact-card .card-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.contact-card .card-value {
  font-weight: 600;
  font-size: 0.97rem;
  color: var(--accent2);
}

/* Contact form */
.contact-form-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 2.5rem;
}
.contact-form-section h2 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 520px) { .form-row { grid-template-columns: 1fr; } }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.form-group label {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
}
.form-group input,
.form-group textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.92rem;
  transition: border-color 0.15s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(148, 163, 184, 0.35); }

.btn-submit {
  background: var(--accent);
  color: white;
  padding: 0.65rem 1.5rem;
  font-size: 0.92rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  transition: background 0.15s, transform 0.15s;
}
.btn-submit:hover { background: var(--accent2); transform: translateY(-1px); }

/* Acknowledgements */
.ack-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
}
.ack-section h2 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.ack-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.ack-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.9rem 1rem;
  background: var(--surface2);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.ack-item .ack-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 0.1rem; }
.ack-item .ack-name {
  font-weight: 600;
  font-size: 0.93rem;
  margin-bottom: 0.15rem;
}
.ack-item .ack-name a {
  color: var(--accent2);
  text-decoration: none;
}
.ack-item .ack-name a:hover { text-decoration: underline; }
.ack-item .ack-desc { color: var(--muted); font-size: 0.83rem; }

/* ══════════════════════════════════════════════════════
   LOADING OVERLAY
   ══════════════════════════════════════════════════════ */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 17, 23, 0.88);
  z-index: 999;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  backdrop-filter: blur(4px);
}
.loading-overlay.show { display: flex; }

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-text { color: var(--muted); font-size: 0.88rem; }

/* ══════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════ */
footer {
  text-align: center;
  padding: 2rem;
  color: rgba(148, 163, 184, 0.28);
  font-size: 0.78rem;
  border-top: 1px solid var(--border);
}
footer a {
  color: var(--accent2);
  text-decoration: none;
  opacity: 0.7;
}
footer a:hover { opacity: 1; }


/* ══════════════════════════════════════════════════════
   PROJECT DETAILS — INTRO SECTION
   ══════════════════════════════════════════════════════ */
.model-intro-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2.5rem;
}

.model-intro-section > h2 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

/* ══════════════════════════════════════════════════════
   PROJECT DETAILS — MODEL SECTIONS
   ══════════════════════════════════════════════════════ */
.model-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2.5rem;
}

.model-section-header {
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.model-section-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, #e2e8f0, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.25rem;
}

.model-subtitle {
  font-size: 0.85rem;
  color: var(--accent2);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.model-intro-blurb {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

/* ── Sub-sections (h3/h4/h5) ─────────────────────────── */
.sub-section {
  margin-bottom: 1.25rem;
}

.sub-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
  margin-top: 1.5rem;
}

.sub-section h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent2);
  margin-bottom: 0.4rem;
  margin-top: 1rem;
}

.sub-section h5 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
  margin-top: 0.75rem;
}

.sub-section ul {
  padding-left: 1.4rem;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.8;
  list-style: disc;
}

.sub-section p,
.sub-section .text-body {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ── Pros/Cons grid ──────────────────────────────────── */
.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.75rem;
}
@media (max-width: 600px) { .pros-cons-grid { grid-template-columns: 1fr; } }

.pros-box,
.cons-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.pros-box { border-top: 3px solid var(--green); }
.cons-box { border-top: 3px solid var(--red); }

.pros-box h4,
.cons-box h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  margin-top: 0 !important;
}

.pros-box h4 { color: var(--green); }
.cons-box h4 { color: var(--red); }

.pros-box ul,
.cons-box ul {
  padding-left: 1.1rem;
  font-size: 0.88rem;
  line-height: 1.75;
  margin: 0;
}

/* ── GitHub link ─────────────────────────────────────── */
.github-link-wrap {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 1.5rem;
  color: var(--accent2);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: border-color 0.15s, background 0.15s;
}
.github-link:hover {
  border-color: var(--accent);
  background: rgba(124, 106, 247, 0.1);
}


/* ══════════════════════════════════════════════════════
   EMBEDDED DEMO BLOCKS (API-based)
   ══════════════════════════════════════════════════════ */
.demo-block {
  background: var(--surface2);
  border: 1px solid var(--accent);
  border-radius: 12px;
  overflow: hidden;
  margin: 1.5rem 0;
}

.demo-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  background: rgba(124, 106, 247, 0.1);
  border-bottom: 1px solid var(--border);
}

.demo-input-wrap {
  padding: 1.25rem;
}

.demo-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.demo-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.92rem;
  line-height: 1.6;
  resize: vertical;
  transition: border-color 0.15s;
}
.demo-input:focus {
  outline: none;
  border-color: var(--accent);
}
.demo-input::placeholder { color: rgba(148, 163, 184, 0.35); }

.demo-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.demo-output-wrap {
  border-top: 1px solid var(--border);
  background: #0d0f1a;
}
.demo-output-wrap.hidden { display: none; }

.demo-output-text {
  padding: 0.85rem 1.25rem;
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-size: 12.5px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #a8ff78;
  line-height: 1.6;
  min-height: 40px;
}
.demo-output-text.error { color: var(--red); }
.demo-output-text.loading { color: var(--muted); font-style: italic; }