/* PlainOps site — the product's Verdant pair, flat press treatment.
   Fern (green & white) is light; Pine is the dark twin. No gradients, no glow. */

:root, [data-theme="fern"] {
  --bg: #F4F7F3; --surface: #FFFFFF; --border: #DCE4DA;
  --text: #17221B; --muted: #64726A;
  --green: #1E7A4C; --amber: #A8752D;
  --on-accent: #F3FBF6;
  --terminal-bg: #14201A; --terminal-fg: #A9C4B0;
  --card-shadow: 0 1px 2px rgba(23, 54, 36, .05), 0 10px 28px rgba(23, 54, 36, .07);
  --font-sans: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --font-display: "Fraunces", Georgia, serif;
  --radius: 12px;
}
[data-theme="pine"] {
  --bg: #0F1613; --surface: #17211B; --border: #28382F;
  --text: #E7F0E9; --muted: #93A89B;
  --green: #3FBE7E; --amber: #D9A03F;
  --on-accent: #07130C;
  --terminal-bg: #0A100C; --terminal-fg: #93A89B;
  --card-shadow: 0 1px 0 rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font-family: var(--font-sans); font-size: 16px; line-height: 1.6;
  transition: background-color .25s ease, color .25s ease;
}
code { font-family: var(--font-mono); font-size: .9em; background: color-mix(in srgb, var(--green) 9%, transparent); padding: 1px 6px; border-radius: 6px; }
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------------------------------------------------------- header */
header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 22px;
  padding: 14px clamp(18px, 5vw, 56px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { font-family: var(--font-display); font-weight: 650; font-size: 19px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { font-family: var(--font-mono); font-weight: 600; color: var(--green); margin-right: 2px; }
header nav { margin-left: auto; display: flex; gap: 20px; flex-wrap: wrap; }
header nav a { color: var(--muted); font-size: 14.5px; }
header nav a:hover { color: var(--text); text-decoration: none; }
#theme-toggle {
  font: inherit; cursor: pointer; background: none; color: var(--muted);
  border: 1px solid var(--border); border-radius: 8px; padding: 5px 11px; line-height: 1;
}
#theme-toggle:hover { color: var(--text); border-color: var(--green); }

/* ------------------------------------------------------------------ hero */
main { max-width: 1120px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 56px); }
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 64px);
  align-items: center; padding: clamp(48px, 9vh, 96px) 0 clamp(36px, 6vh, 64px);
}
.kicker {
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 1.6px;
  text-transform: uppercase; color: var(--green); margin-bottom: 14px;
}
h1 {
  font-family: var(--font-display); font-weight: 650;
  font-size: clamp(38px, 5.4vw, 60px); line-height: 1.06; letter-spacing: -.5px;
  margin-bottom: 18px;
}
.sub { color: var(--muted); font-size: 17.5px; max-width: 54ch; margin-bottom: 26px; }
.sub strong { color: var(--text); }

.btn {
  display: inline-block; font-weight: 650; font-size: 15.5px;
  border-radius: 10px; padding: 12px 22px; border: 1px solid transparent;
  transition: transform .12s ease, box-shadow .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: var(--green); color: var(--on-accent); }
.btn.primary:hover { box-shadow: 0 2px 14px color-mix(in srgb, var(--green) 32%, transparent); }
.btn.ghost { border-color: var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--green); }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-note { margin-top: 14px; font-size: 13px; color: var(--muted); }

/* terminal */
.term-window {
  background: var(--terminal-bg); border-radius: 14px; overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--terminal-bg) 60%, var(--border));
  box-shadow: var(--card-shadow); min-height: 240px;
}
.term-bar {
  display: flex; align-items: center; gap: 7px; padding: 11px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.term-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .16); }
.term-title { margin-left: 8px; font-family: var(--font-mono); font-size: 11.5px; color: rgba(255, 255, 255, .38); }
.term-body { padding: 20px 20px 26px; font-family: var(--font-mono); font-size: 13.5px; line-height: 1.9; }
.t-user { color: #E8F2EA; word-break: break-word; }
.t-reply { color: var(--terminal-fg); white-space: pre-line; margin-top: 8px; min-height: 66px; }
.t-reply .ok { color: #4ED492; }
.caret { display: inline-block; width: 8px; height: 15px; background: #4ED492; vertical-align: -2px; margin-left: 2px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------------------------------------------------------- cloud strip */
.clouds {
  display: flex; gap: clamp(14px, 3vw, 34px); flex-wrap: wrap; justify-content: center;
  padding: 10px 0 8px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.cloud { display: flex; align-items: center; gap: 10px; padding: 10px 6px; }
.clouds-lede { align-self: center; color: var(--muted); font-size: 14px; padding: 10px 6px; }
.cloud-name { font-family: var(--font-display); font-weight: 650; font-size: 18px; }
.pill {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .4px;
  padding: 3px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted);
}
.pill.ok { color: var(--green); border-color: color-mix(in srgb, var(--green) 40%, transparent); }
.pill.soft { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 40%, transparent); }

/* ---------------------------------------------------------------- bands */
.band { padding: clamp(44px, 8vh, 84px) 0 6px; }
.section-title {
  font-family: var(--font-display); font-weight: 650;
  font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -.3px; margin-bottom: 10px;
}
.section-sub { color: var(--muted); max-width: 62ch; margin-bottom: 8px; }
.grid { display: grid; gap: 16px; margin-top: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--card-shadow);
}
.card h3 { font-size: 16.5px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }
.approve-card { border-color: color-mix(in srgb, var(--amber) 45%, transparent); }
.approve-card h3 { color: var(--amber); }

/* ---------------------------------------------------------------- steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.step {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 22px 22px; box-shadow: var(--card-shadow);
}
.step .n {
  position: absolute; top: -14px; left: 20px;
  font-family: var(--font-mono); font-weight: 600; font-size: 13px;
  background: var(--green); color: var(--on-accent);
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 4px 0 8px; }
.step p { color: var(--muted); font-size: 14.5px; }
.step-approve { border-color: color-mix(in srgb, var(--amber) 45%, transparent); }
.step-approve .n { background: var(--amber); }

/* ------------------------------------------------------------- download */
.dl-grid { margin-top: 26px; }
.dl-card .detect-pill { display: none; }
.dl-card.detected { border-color: color-mix(in srgb, var(--green) 55%, transparent); }
.dl-card.detected .detect-pill {
  display: inline-block; color: var(--green);
  border-color: color-mix(in srgb, var(--green) 40%, transparent);
}
.dl-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.dl-head h3 { margin: 0; font-size: 18px; }
.dl-card p { margin-bottom: 16px; }
.dl-card .btn { font-size: 14.5px; padding: 10px 18px; }
.btn-pair { display: flex; gap: 10px; flex-wrap: wrap; }
.dl-card .install-cmd {
  background: var(--terminal-bg); color: var(--terminal-fg);
  border-radius: 10px; padding: 12px 14px; overflow-x: auto;
  font-family: var(--font-mono); font-size: 12px; line-height: 1.6;
  margin: 0 0 14px; user-select: all;
}
.dl-note { margin-top: 14px; font-size: 12.5px; color: var(--muted); }
.dl-note code { font-size: 11.5px; }
.src-card { margin-top: 16px; }
.src-card pre {
  background: var(--terminal-bg); color: var(--terminal-fg);
  border-radius: 10px; padding: 16px 18px; overflow-x: auto;
  font-size: 13px; line-height: 1.8; margin: 10px 0 12px;
}
.src-card pre .c { color: color-mix(in srgb, var(--terminal-fg) 55%, transparent); }
.src-note { font-size: 14px; }

/* ------------------------------------------------------------------ faq */
.faq { padding-bottom: 30px; }

/* --------------------------------------------------------------- footer */
footer {
  margin-top: 60px; border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 22px clamp(18px, 5vw, 56px); color: var(--muted); font-size: 14px;
}
footer nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }

/* ----------------------------------------------------------- responsive */
@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .grid-3, .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .grid-3, .grid-2, .steps { grid-template-columns: 1fr; }
  header nav { gap: 12px; }
  footer { flex-direction: column; align-items: flex-start; }
  footer nav { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .caret { animation: none; }
  html { scroll-behavior: auto; }
  .btn:hover { transform: none; }
}