/* ============================================================
   Interactive features
   ============================================================ */

/* ---------- Scroll progress ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100; pointer-events: none; }
.scroll-progress span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform-origin: 0 50%; transform: scaleX(0);
}

/* ---------- Cursor glow ---------- */
.cursor-glow {
  position: fixed; top: -200px; left: -200px; width: 400px; height: 400px;
  border-radius: 50%; pointer-events: none; z-index: 0;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 14%, transparent), transparent 65%);
  opacity: 0; transition: opacity 0.4s;
}
.cursor-glow.on { opacity: 1; }
main, .footer { position: relative; z-index: 1; }

/* ---------- Nav additions ---------- */
.nav-right { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a.active { color: var(--text); }
.nav-links a:not(.btn) { position: relative; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.kbd-btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  font: inherit; font-size: 0.85rem; color: var(--muted);
  background: var(--surface); border: 1px solid var(--border);
  padding: 0.4em 0.5em 0.4em 0.8em; border-radius: 10px; cursor: pointer;
}
.kbd-btn:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
kbd {
  font: 500 0.72rem "JetBrains Mono", monospace;
  padding: 0.15em 0.45em; border-radius: 6px;
  background: var(--bg-alt); border: 1px solid var(--border); color: var(--muted);
}
/* ---------- Theme button (nav) ---------- */
.theme-btn {
  display: grid; place-items: center; flex: none;
  width: 40px; height: 40px; padding: 0; border-radius: 10px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
  transition: color 0.15s, border-color 0.15s, transform 0.15s;
}
.theme-btn:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.theme-btn:active { transform: scale(0.94); }
.theme-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-btn svg {
  grid-area: 1 / 1; width: 20px; height: 20px;
  fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
  transition: transform 0.35s ease, opacity 0.25s ease;
}
/* Dark (the default) shows the sun ("go light"); light shows the moon ("go dark") */
.theme-btn .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.6); }
:root[data-theme="light"] .theme-btn .icon-moon { opacity: 1; transform: none; }
:root[data-theme="light"] .theme-btn .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.6); }
/* Smooth colour fade while switching themes */
.theme-switching, .theme-switching *, .theme-switching *::before, .theme-switching *::after {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, fill 0.3s ease, stroke 0.3s ease !important;
}
.theme-switching .theme-btn svg { transition: transform 0.35s ease, opacity 0.25s ease !important; }
@media (max-width: 960px) {
  .nav-right { gap: 0.5rem; }
}

.logo, .nav .btn { white-space: nowrap; }
@media (max-width: 1100px) {
  .kbd-btn { display: none; } /* Ctrl+K still works; the button needs room */
}
@media (max-width: 960px) {
  .nav-links a.active::after { display: none; }
  .nav-links .btn { width: 100%; }
}

/* ---------- Terminal ---------- */
.terminal {
  max-width: 600px; margin: 56px auto 0;
  background: var(--code-bg); color: #d7dae8;
  border-radius: var(--radius); text-align: left;
  box-shadow: 0 30px 60px -20px rgba(16, 18, 35, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.term-body {
  height: 290px; overflow-y: auto; padding: 16px 20px 18px;
  font: 400 0.82rem/1.85 "JetBrains Mono", ui-monospace, monospace;
  cursor: text; scrollbar-width: thin; scrollbar-color: #2c2f40 transparent;
}
.term-row { white-space: pre-wrap; word-break: break-word; }
.term-row.c-err { color: #fca5a5; }
.typed::after { content: "▋"; color: #a5b4fc; animation: blink 1s steps(1) infinite; }
.term-row:not(:first-child) .typed::after, .term-row:has(~ .term-row) .typed::after { display: none; }
@keyframes blink { 50% { opacity: 0; } }
.term-line { display: flex; gap: 0.6em; align-items: center; }
.term-line[hidden] { display: none; }
.term-prompt { color: #6b6f86; }
.term-line input {
  flex: 1; min-width: 0; background: transparent; border: 0; outline: 0;
  color: #eef0f8; font: inherit; caret-color: #a5b4fc; padding: 0;
}
.term-line input::placeholder { color: #4b4f66; }
.term-cmd {
  font: inherit; color: #a5b4fc; background: rgba(165, 180, 252, 0.08);
  border: 1px solid rgba(165, 180, 252, 0.2); border-radius: 5px;
  padding: 0 0.45em; cursor: pointer; line-height: 1.5;
}
.term-cmd:hover { background: rgba(165, 180, 252, 0.18); }
.term-row a.c-link { text-decoration: underline; }

/* ---------- Tabs ---------- */
.tabs {
  display: inline-flex; gap: 4px; padding: 4px; margin-bottom: 20px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  max-width: 100%; overflow-x: auto;
}
.tabs button {
  font: inherit; font-size: 0.9rem; font-weight: 600; white-space: nowrap;
  padding: 0.6em 1.1em; border: 0; border-radius: 9px; cursor: pointer;
  background: transparent; color: var(--muted);
  transition: background 0.15s, color 0.15s;
}
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { background: var(--accent); color: #fff; }
@media (max-width: 520px) {
  .tabs { display: flex; width: 100%; }
  .tabs button { flex: 1; padding: 0.6em 0.4em; font-size: 0.82rem; }
}
.tool-panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; box-shadow: var(--shadow);
}

/* ---------- Estimator ---------- */
#panel-estimate:not([hidden]) { display: grid; grid-template-columns: 1.4fr 1fr; }
@media (max-width: 860px) { #panel-estimate:not([hidden]) { grid-template-columns: 1fr; } }
.est-form { padding: 32px; display: grid; gap: 26px; }
@media (max-width: 520px) { .est-form { padding: 20px; } }
.est-form fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.est-form fieldset[hidden] { display: none; }
.est-form legend { font-weight: 700; margin-bottom: 12px; padding: 0; display: flex; gap: 0.5em; align-items: center; }
.est-form legend output {
  font: 600 0.85rem "JetBrains Mono", monospace; color: var(--accent);
  background: var(--accent-soft); padding: 0.1em 0.6em; border-radius: 6px;
}
.option-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.option input, .chip-toggle input, .segmented input { position: absolute; opacity: 0; pointer-events: none; }
.option span {
  display: flex; flex-direction: column; gap: 6px; height: 100%;
  padding: 14px; border-radius: 12px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg);
  font-size: 0.9rem; font-weight: 600;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.option span b { font-size: 1.3rem; }
.option span:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); }
.option input:checked + span { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.option input:focus-visible + span, .chip-toggle input:focus-visible + span, .segmented input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.chip-toggles { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-toggle span {
  display: inline-flex; align-items: center; gap: 0.4em;
  padding: 0.5em 0.95em; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg);
  font-size: 0.88rem; font-weight: 500;
  transition: all 0.15s;
}
.chip-toggle span::before { content: "+"; color: var(--muted); font-weight: 700; }
.chip-toggle input:checked + span { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip-toggle input:checked + span::before { content: "✓"; color: #fff; }

.segmented { display: inline-flex; padding: 4px; gap: 4px; border-radius: 12px; background: var(--bg); border: 1px solid var(--border); }
.segmented span { display: block; padding: 0.5em 1.1em; border-radius: 9px; cursor: pointer; font-size: 0.9rem; font-weight: 600; color: var(--muted); }
.segmented input:checked + span { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; }

.est-result {
  padding: 32px; border-left: 1px solid var(--border);
  background: radial-gradient(80% 60% at 100% 0%, var(--accent-soft), transparent 70%), var(--bg-alt);
  border-radius: 0 20px 20px 0;
  display: flex; flex-direction: column;
}
@media (max-width: 860px) { .est-result { border-left: 0; border-top: 1px solid var(--border); border-radius: 0 0 20px 20px; } }
@media (max-width: 520px) { .est-result { padding: 20px; } }
.est-label { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin: 0 0 4px; }
.est-price { font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 800; letter-spacing: -0.02em; margin: 0; }
.est-weeks { color: var(--accent); font-weight: 600; margin: 0 0 18px; }
.est-breakdown { list-style: none; padding: 0; margin: 0 0 22px; font-size: 0.86rem; }
.est-breakdown li { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; border-bottom: 1px dashed var(--border); }
.est-breakdown li span:first-child { color: var(--muted); }
.est-breakdown li span:last-child { font-family: "JetBrains Mono", monospace; font-size: 0.8rem; white-space: nowrap; }
.est-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; }
.est-note { font-size: 0.78rem; color: var(--muted); margin: 14px 0 0; }

/* ---------- Quiz ---------- */
.quiz { padding: 36px; max-width: 720px; }
@media (max-width: 520px) { .quiz { padding: 22px; } }
.quiz-progress { height: 6px; border-radius: 999px; background: var(--bg-alt); overflow: hidden; margin-bottom: 22px; }
.quiz-progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.4s ease; }
.quiz-step { font-size: 0.8rem; font-weight: 700; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.quiz-q { font-size: clamp(1.3rem, 3vw, 1.7rem); margin-bottom: 20px; }
.quiz-options { display: grid; gap: 10px; }
.quiz-opt {
  font: inherit; text-align: left; font-weight: 500;
  padding: 14px 18px; border-radius: 12px; cursor: pointer;
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  transition: border-color 0.15s, transform 0.15s, background 0.15s;
  animation: rise 0.35s ease both;
}
.quiz-opt:nth-child(2) { animation-delay: 0.04s; }
.quiz-opt:nth-child(3) { animation-delay: 0.08s; }
.quiz-opt:nth-child(4) { animation-delay: 0.12s; }
.quiz-opt:nth-child(5) { animation-delay: 0.16s; }
.quiz-opt:hover { border-color: var(--accent); background: var(--accent-soft); transform: translateX(4px); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
.quiz-back { font: inherit; font-size: 0.88rem; background: none; border: 0; color: var(--muted); cursor: pointer; margin-top: 16px; padding: 0; }
.quiz-back:hover { color: var(--text); }
.quiz-text { color: var(--muted); font-size: 1.02rem; }
.quiz-note { font-size: 0.92rem; padding: 10px 14px; border-radius: 10px; background: var(--accent-soft); }
.quiz-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 22px; }
.quiz-actions .quiz-back { margin: 0 0 0 6px; }

/* ---------- Speed check ---------- */
.speed { padding: 36px; }
@media (max-width: 520px) { .speed { padding: 22px; } }
.speed-form label { display: block; font-weight: 700; margin-bottom: 10px; }
.speed-row { display: flex; gap: 10px; flex-wrap: wrap; }
.speed-row input {
  flex: 1 1 240px; font: inherit; padding: 0.8em 1em; border-radius: 12px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.speed-row input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.speed-row .btn:disabled { opacity: 0.7; cursor: wait; transform: none; }
.speed-note { font-size: 0.82rem; color: var(--muted); margin: 10px 0 0; }
.speed-result:not(:empty) { margin-top: 28px; }
.speed-loading { display: flex; align-items: center; gap: 12px; color: var(--muted); }
.spinner {
  width: 20px; height: 20px; border-radius: 50%;
  border: 3px solid var(--accent-soft); border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.speed-error { padding: 12px 16px; border-radius: 12px; background: rgba(239, 68, 68, 0.1); color: #ef4444; margin: 0; }
.speed-host { color: var(--muted); }
.rings { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 16px; margin-bottom: 24px; }
.ring { position: relative; display: grid; justify-items: center; text-align: center; gap: 6px; }
.ring svg { width: 88px; height: 88px; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 7; }
.ring-track { stroke: var(--bg-alt); }
.ring-bar { stroke-linecap: round; transition: stroke-dashoffset 1.2s ease; }
.ring strong { position: absolute; top: 28px; font-size: 1.35rem; font-weight: 800; }
.ring span { font-size: 0.82rem; color: var(--muted); font-weight: 500; }
.ring-good .ring-bar { stroke: #22c55e; } .ring-good strong { color: #16a34a; }
.ring-ok .ring-bar { stroke: #f59e0b; } .ring-ok strong { color: #d97706; }
.ring-bad .ring-bar { stroke: #ef4444; } .ring-bad strong { color: #dc2626; }
.metrics { list-style: none; padding: 0; margin: 0 0 24px; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.metrics li {
  display: flex; justify-content: space-between; gap: 10px; align-items: center;
  padding: 12px 14px; border-radius: 10px; background: var(--bg); border: 1px solid var(--border);
  font-size: 0.88rem;
}
.metrics li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; flex: none; }
.metrics li span { flex: 1; color: var(--muted); }
.metric-good::before { background: #22c55e; }
.metric-ok::before { background: #f59e0b; }
.metric-bad::before { background: #ef4444; }
.speed-cta { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 18px 20px; border-radius: 14px; background: var(--accent-soft); }
.speed-cta p { margin: 0; flex: 1 1 280px; font-weight: 500; }
.speed-source { font-size: 0.75rem; color: var(--muted); margin: 12px 0 0; }

/* ---------- Orbax-Bot animation ---------- */
.case-visual { display: flex; flex-direction: column; gap: 18px; }
.flow-arrow { overflow: visible; }
.flow-arrow i {
  position: absolute; left: 50%; top: 0; width: 8px; height: 8px; margin-left: -4px;
  border-radius: 50%; background: var(--accent-2);
  box-shadow: 0 0 10px var(--accent-2); opacity: 0;
}
.running .flow-arrow i { animation: travel 1.1s ease-in infinite; }
.running .flow-arrow + .flow-core + .flow-arrow i { animation-delay: 0.55s; }
@keyframes travel {
  0% { top: 0; opacity: 0; }
  20% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}
.running .flow-core { animation: pulse 2.2s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px var(--accent-soft), var(--shadow); } }
.flow-targets span { transition: border-color 0.3s, background 0.3s; }
.flow-targets span.hit { animation: hit 0.9s ease; }
@keyframes hit {
  0% { background: var(--surface); }
  25% { background: var(--accent-soft); border-color: var(--accent); border-style: solid; transform: scale(1.06); }
  100% { background: var(--surface); }
}
.flow-counter { margin: 0; text-align: center; font-size: 0.88rem; color: var(--muted); }
.flow-counter strong { font-family: "JetBrains Mono", monospace; color: var(--text); font-size: 1rem; }
.flow-counter em { font-style: normal; font-size: 0.78rem; opacity: 0.8; }

/* ---------- Before / after slider ---------- */
.ba-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 28px; box-shadow: var(--shadow); margin-bottom: 20px;
}
@media (max-width: 520px) { .ba-card { padding: 18px; } }
.ba-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.ba-head h3 { margin: 0; font-size: clamp(1.2rem, 3vw, 1.5rem); }
.ba-hint { margin: 0; font-size: 0.85rem; color: var(--muted); }
.ba { position: relative; height: 360px; border-radius: 14px; overflow: hidden; border: 1px solid var(--border); user-select: none; }
.ba-pane { position: absolute; inset: 0; overflow: hidden; }
.ba-after { clip-path: inset(0 0 0 var(--pos)); }
.ba-handle {
  position: absolute; top: 0; bottom: 0; left: var(--pos); width: 3px; margin-left: -1.5px;
  background: #fff; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15), 0 0 12px rgba(0, 0, 0, 0.3);
  pointer-events: none; transition: left 0.05s;
}
.ba-handle span {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: #fff; color: #333; font-size: 1.1rem; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}
.ba-range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.ba-range:focus-visible ~ .ba-handle span { outline: 3px solid var(--accent); }
.ba-label {
  position: absolute; bottom: 12px; padding: 0.25em 0.7em; border-radius: 6px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  background: rgba(0, 0, 0, 0.6); color: #fff; pointer-events: none;
}
.ba-label-l { left: 12px; }
.ba-label-r { right: 12px; }

/* "Before" mock: an early-2000s site */
.old-site { height: 100%; background: #c0c0c0; font-family: "Times New Roman", Times, serif; color: #000; font-size: 13px; }
.old-header { background: #000080; color: #ffff00; font-size: 20px; font-weight: bold; text-align: center; padding: 14px 8px; font-family: "Comic Sans MS", "Times New Roman", serif; }
.old-nav { background: #e0e0e0; padding: 6px; text-align: center; color: #0000ee; border-bottom: 2px outset #fff; }
.old-body { display: flex; gap: 8px; padding: 8px; }
.old-side { width: 130px; flex: none; background: #fff; border: 2px inset #999; padding: 8px; color: #0000ee; line-height: 1.7; }
.old-side b { color: #000; }
.old-main { background: #fff; border: 2px inset #999; padding: 10px; flex: 1; }
.old-blink { color: #ff0000; font-weight: bold; text-align: center; font-size: 16px; animation: blink 1.2s steps(1) infinite; }
.old-main u { color: #551a8b; }
.old-counter { background: #000; color: #0f0; font-family: monospace; padding: 2px 4px; display: inline-block; }
@media (max-width: 520px) { .old-side { display: none; } }

/* "After" mock: modern site */
.new-site { height: 100%; background: linear-gradient(160deg, #0f172a, #1e3a8a); color: #fff; font-family: "Inter", sans-serif; padding: 0 28px; }
.new-nav { display: flex; align-items: center; gap: 20px; padding: 18px 0; font-size: 13px; color: #cbd5e1; }
.new-nav b { color: #fff; margin-right: auto; font-size: 15px; }
.new-btn { background: #38bdf8; color: #0f172a; font-weight: 700; padding: 7px 14px; border-radius: 999px; font-size: 13px; white-space: nowrap; }
.new-body { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding-top: 20px; }
.new-widget {
  justify-self: center; width: 100%; max-width: 250px; padding: 18px;
  border-radius: 16px; background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.new-widget-title { font-size: 12px; font-weight: 600; color: #cbd5e1; margin: 0 0 12px; }
.new-slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 14px; }
.new-slots span { text-align: center; font-size: 12px; padding: 7px 0; border-radius: 8px; border: 1px solid rgba(255, 255, 255, 0.15); }
.new-slots span.on { background: #38bdf8; border-color: #38bdf8; color: #0f172a; font-weight: 700; }
.new-btn-block { display: block; text-align: center; }
.new-hero { padding: 0 0 10px; }
.new-hero .new-cards { margin-top: 4px; }
.new-pill { display: inline-block; font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: rgba(56, 189, 248, 0.15); color: #7dd3fc; margin-bottom: 12px; }
.new-hero h4 { font-size: 26px; line-height: 1.15; margin: 0 0 10px; letter-spacing: -0.02em; }
.new-hero p { color: #cbd5e1; font-size: 13px; margin-bottom: 16px; }
.new-btn-lg { display: inline-block; padding: 10px 18px; font-size: 14px; }
.new-cards { display: flex; gap: 10px; flex-wrap: wrap; }
.new-cards span { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 10px; padding: 10px 14px; font-size: 13px; }
@media (max-width: 520px) {
  .new-site { padding: 0 16px; }
  .new-nav span:not(.new-btn) { display: none; }
  .new-body { display: block; padding-top: 10px; }
  .new-widget, .new-cards { display: none; }
  .new-hero { margin-left: 44%; }
  .new-hero h4 { font-size: 18px; }
  .new-hero p { font-size: 12px; }
}

/* ---------- Demo projects ---------- */
.demos-head { margin: 56px 0 20px; }
.demos-head h3 { font-size: clamp(1.3rem, 3vw, 1.6rem); margin-bottom: 0.3em; }
.demos-head p { color: var(--muted); margin: 0; max-width: 620px; }
.demo-grid { margin-bottom: 20px; }
.card-demo { display: flex; flex-direction: column; padding: 16px 16px 22px; }
.card-demo > :not(.demo-thumb) { margin-left: 8px; margin-right: 8px; }
.card-demo .ticks { margin-bottom: 18px; }
.demo-thumb {
  display: block; aspect-ratio: 16 / 10; border-radius: 12px; overflow: hidden; margin-bottom: 18px;
  background: var(--bg-alt); border: 1px solid var(--border);
}
.demo-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; transition: transform 0.5s ease; }
.card-demo:hover .demo-thumb img { transform: scale(1.04); }
.demo-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }

/* ---------- Card tilt highlight ---------- */
.tilt { position: relative; will-change: transform; }
.tilt.visible { transition: transform 0.15s ease-out, border-color 0.2s ease, opacity 0.6s ease; }
.tilt::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%);
  opacity: 0; transition: opacity 0.3s;
}
.tilt:hover::after { opacity: 1; }

/* ---------- Tech tags ---------- */
.kicker-hint { color: var(--muted); font-weight: 500; letter-spacing: 0.02em; text-transform: none; }
.tech button {
  font: inherit; font-size: 0.9rem; font-weight: 500; color: var(--text);
  padding: 0.55em 1.1em; border-radius: 999px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border);
  transition: transform 0.15s, border-color 0.15s, background 0.15s;
}
.tech button:hover { transform: translateY(-2px); border-color: var(--accent); }
.tech button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.tech-detail {
  max-width: 560px; margin: 20px auto 0; text-align: center;
  padding: 18px 22px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow);
}
.tech-detail p { margin: 6px 0 0; color: var(--muted); }
.tech-detail.pop { animation: rise 0.3s ease; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 820px; }
.faq { display: grid; gap: 10px; }
.faq details {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  transition: border-color 0.2s;
}
.faq details[open] { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.faq summary {
  list-style: none; cursor: pointer; padding: 18px 22px;
  font-weight: 600; display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-size: 1.2rem; font-weight: 400;
  background: var(--accent-soft); color: var(--accent);
  transition: transform 0.25s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 22px 18px; color: var(--muted); }
.faq details[open] > div { animation: rise 0.3s ease; }
.faq details p { margin: 0; }
.faq a { color: var(--accent); border-bottom: 1px solid currentColor; }

/* ---------- Contact additions ---------- */
.contact-text .btn { margin: 6px 0 14px; }
.contact-alt { font-size: 0.92rem; }
.form-followup {
  padding: 16px 18px; border-radius: 12px; background: var(--accent-soft);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  animation: rise 0.3s ease;
}
.form-followup[hidden] { display: none; }
.form-followup p { margin: 0; font-size: 0.92rem; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note a, .form-error a { color: var(--accent); border-bottom: 1px solid currentColor; }
.form-error { margin: 0; padding: 12px 14px; border-radius: 10px; background: rgba(239, 68, 68, 0.1); color: #ef4444; font-size: 0.88rem; }
.form-error[hidden] { display: none; }
.contact-form .btn:disabled { opacity: 0.7; cursor: wait; transform: none; }
.calendly-inline { margin-top: 24px; min-width: 280px; height: 700px; border-radius: 20px; overflow: hidden; border: 1px solid var(--border); }

/* ---------- Command palette ---------- */
.palette { position: fixed; inset: 0; z-index: 200; display: grid; place-items: start center; padding: 12vh 16px 16px; }
.palette[hidden] { display: none; }
.palette-backdrop { position: absolute; inset: 0; background: rgba(8, 9, 15, 0.55); backdrop-filter: blur(4px); animation: fade 0.15s ease; }
.palette-box {
  position: relative; width: 100%; max-width: 560px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.5); overflow: hidden;
  animation: rise 0.18s ease;
}
@keyframes fade { from { opacity: 0; } }
.palette-input {
  width: 100%; font: inherit; font-size: 1.05rem; padding: 18px 20px;
  border: 0; border-bottom: 1px solid var(--border); outline: 0;
  background: transparent; color: var(--text);
}
.palette-list { list-style: none; margin: 0; padding: 8px; max-height: 340px; overflow-y: auto; }
.palette-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 10px; cursor: pointer; font-size: 0.95rem;
}
.palette-list li[aria-selected="true"] { background: var(--accent-soft); color: var(--text); }
.pal-icon { width: 24px; text-align: center; }
.pal-empty { color: var(--muted); cursor: default !important; }
.palette-foot { margin: 0; padding: 10px 16px; border-top: 1px solid var(--border); font-size: 0.78rem; color: var(--muted); }
.palette-foot kbd { margin-right: 2px; }

/* ---------- Chat ---------- */
.chat-fab {
  position: fixed; right: 20px; bottom: 20px; z-index: 150;
  width: 56px; height: 56px; border-radius: 50%; border: 0; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  box-shadow: 0 10px 30px -8px var(--accent);
  display: grid; place-items: center;
  transition: transform 0.2s;
}
.chat-fab:hover { transform: scale(1.06); }
.chat-fab svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; grid-area: 1 / 1; transition: opacity 0.2s, transform 0.2s; }
.chat-fab-close { opacity: 0; transform: rotate(-90deg); }
.chat-fab.open .chat-fab-open { opacity: 0; transform: rotate(90deg); }
.chat-fab.open .chat-fab-close { opacity: 1; transform: none; }

.chat {
  position: fixed; right: 20px; bottom: 88px; z-index: 150;
  width: min(380px, calc(100vw - 32px));
  height: min(540px, calc(100vh - 120px));
  height: min(540px, calc(100dvh - 120px)); /* phones: follows the browser toolbar */
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.45); overflow: hidden;
  animation: rise 0.2s ease; transform-origin: bottom right;
}
.chat[hidden] { display: none; }
@media (max-width: 520px) { .chat { right: 16px; bottom: 84px; } .chat-fab { right: 16px; bottom: 16px; } }
.chat-head { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.chat-head strong { display: block; font-size: 0.95rem; }
.chat-head small { color: var(--muted); font-size: 0.75rem; }
.chat-log { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 85%; animation: rise 0.25s ease; }
.msg p { margin: 0; padding: 10px 14px; border-radius: 14px; font-size: 0.9rem; line-height: 1.5; }
.msg-bot p { background: var(--bg-alt); border-bottom-left-radius: 4px; }
.msg-user { align-self: flex-end; }
.msg-user p { background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.msg-actions button, .chat-chips button {
  font: inherit; font-size: 0.8rem; font-weight: 500; cursor: pointer;
  padding: 0.45em 0.85em; border-radius: 999px;
  background: var(--surface); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border));
}
.msg-actions button:hover, .chat-chips button:hover { background: var(--accent-soft); }
.typing p { display: flex; gap: 4px; padding: 14px; }
.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: bounce 1s infinite; }
.typing span:nth-child(2) { animation-delay: 0.15s; }
.typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 0%, 60%, 100% { transform: none; opacity: 0.5; } 30% { transform: translateY(-4px); opacity: 1; } }
.chat-chips { display: flex; gap: 6px; padding: 0 16px 10px; overflow-x: auto; scrollbar-width: none; }
.chat-chips:empty { display: none; }
.chat-chips button { white-space: nowrap; }
.chat-form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
.chat-form input {
  flex: 1; min-width: 0; font: inherit; font-size: 0.9rem; padding: 0.7em 0.9em;
  border-radius: 10px; border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.chat-form input:focus { outline: none; border-color: var(--accent); }
.chat-form button { width: 42px; border: 0; border-radius: 10px; background: var(--accent); color: #fff; cursor: pointer; font-size: 1rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 300;
  transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  max-width: calc(100vw - 32px); padding: 12px 18px; border-radius: 12px;
  background: var(--text); color: var(--bg); font-size: 0.9rem; font-weight: 500;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  transition: opacity 0.25s, transform 0.25s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Touch devices (phones & tablets) ---------- */
@media (pointer: coarse) {
  /* iOS zooms into inputs smaller than 16px; keep them at 16px */
  input, select, textarea, .term-line input { font-size: 16px !important; }
  /* Bigger slider thumb for fingers */
  input[type="range"] { height: 32px; }
  .theme-btn { width: 44px; height: 44px; }
  .tabs button { min-height: 44px; }
}
/* Don't leave cards "stuck" in their hover lift after a tap */
@media (hover: none) {
  .card:hover, .btn:hover, .tech button:hover, .quiz-opt:hover { transform: none; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}