/* ===================================================================
   STRATUM CLI LANDING — Design System
   Colors aligned with CLI spec (STRATUM_UI_SPECIFICATION.md)
   =================================================================== */

/* === VARIABLES === */
:root {
  /* Backgrounds */
  --bg:         #080b13;
  --bg-soft:    #0d1120;
  --card:       #111827;
  --card-hover: #19253a;

  /* Borders — from CLI spec separators */
  --line:        #1e2d47;
  --line-bright: #374151;

  /* Text — from CLI spec */
  --text:       #F3F4F6;   /* primary */
  --text-soft:  #D1D5DB;   /* agent text */
  --muted:      #9CA3AF;   /* muted */
  --muted-dark: #6B7280;   /* dim */

  /* Brand — exact colors from CLI spec */
  --accent:     #F59E0B;                      /* amber */
  --accent-dim: rgba(245, 158, 11, 0.12);
  --accent-glow:rgba(245, 158, 11, 0.22);
  --good:       #22C55E;                      /* connected / done */
  --good-dim:   rgba(34, 197, 94, 0.12);
  --blue:       #60A5FA;                      /* current milestone only */
  --blue-dim:   rgba(96, 165, 250, 0.12);
}

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100dvh;
  /* subtle ambient glow */
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(245, 158, 11, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 60%,  rgba(34, 197, 94, 0.03)  0%, transparent 50%);
}

/* === TYPOGRAPHY === */
h1, h2, h3 {
  font-family: "Space Grotesk", Inter, sans-serif;
  margin: 0;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: clamp(1.75rem, 4vw, 3rem); }

/* === CONTAINER === */
.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

/* ===================================================================
   NAVIGATION
   =================================================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(8, 11, 19, 0.88);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1200px, 92%);
  margin: 0 auto;
  height: 54px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-text {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.07em;
  color: var(--accent);
}

.nav-logo-badge {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted-dark);
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  padding: 1px 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 6px 11px;
  border-radius: 7px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 150ms, background 150ms;
  cursor: pointer;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  outline: none;
}

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 8px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(245, 158, 11, 0.28);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 150ms, border-color 150ms, box-shadow 150ms;
  cursor: pointer;
  flex-shrink: 0;
}

.btn-nav-cta:hover,
.btn-nav-cta:focus-visible {
  background: rgba(245, 158, 11, 0.2);
  border-color: rgba(245, 158, 11, 0.5);
  outline: none;
}

/* ===================================================================
   HERO
   =================================================================== */
.hero {
  padding: 68px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}

.hero-content { max-width: 520px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 7px var(--good);
  flex-shrink: 0;
}

.subtitle {
  color: var(--muted);
  max-width: 52ch;
  margin: 14px 0 0;
  font-size: 1rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 150ms;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #1a1300;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #fbbf24;
  box-shadow: 0 0 22px var(--accent-glow);
  outline: none;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--line-bright);
  color: var(--text-soft);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

/* ===================================================================
   TERMINAL PREVIEW (hero right side)
   =================================================================== */
.terminal-window {
  background: #07090f;
  border: 1px solid var(--line-bright);
  border-radius: 12px;
  overflow: hidden;
  font-family: "JetBrains Mono", "Fira Code", "Courier New", monospace;
  font-size: 0.8rem;
  line-height: 1.55;
  box-shadow:
    0 28px 72px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(245, 158, 11, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.terminal-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #0c0e17;
  border-bottom: 1px solid var(--line);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.terminal-dots span:nth-child(1) { background: #FF5F57; }
.terminal-dots span:nth-child(2) { background: #FFBD2E; }
.terminal-dots span:nth-child(3) { background: #28CA41; }

.terminal-title {
  color: var(--muted-dark);
  font-size: 0.76rem;
  margin-left: 2px;
}

.terminal-statusbar {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--line);
  font-size: 0.76rem;
  color: var(--muted);
}

.t-dot       { font-size: 0.65rem; margin-right: 5px; }
.t-connected { color: var(--good); }
.t-provider  { color: var(--muted); }
.t-sep       { color: var(--line-bright); margin: 0 6px; }
.t-model     { color: var(--text); }
.t-ctx-right { color: var(--muted); margin-left: auto; }
.t-pct       { color: var(--good); }

.terminal-body {
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 200px;
}

.t-turn { display: flex; flex-direction: column; gap: 3px; }

.t-label      { font-size: 0.74rem; margin-bottom: 1px; }
.t-label-user  { color: var(--muted-dark); }
.t-label-agent { color: var(--accent); font-weight: 500; }

.t-text     { color: var(--text-soft); }
.t-user-text { color: #E5E5E5; }
.t-bar      { color: var(--line-bright); }

.t-tool {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 5px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  margin: 2px 0;
  font-size: 0.74rem;
  width: fit-content;
}

.t-tool-done { color: var(--good); border-color: rgba(34, 197, 94, 0.25); }
.t-tool-name { color: inherit; }
.t-tool-meta { color: var(--muted-dark); margin-left: 2px; }

.t-cursor {
  display: inline-block;
  width: 7px;
  height: 12px;
  background: var(--accent);
  vertical-align: middle;
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}

.t-cursor-input {
  color: var(--muted-dark);
  animation: blink 1s step-end infinite;
}

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

.terminal-prompt-line {
  padding: 8px 14px;
  border-top: 1px solid var(--line);
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.8rem;
  color: var(--muted-dark);
}

.t-prompt { color: var(--accent); }

/* ===================================================================
   MAIN CONTENT
   =================================================================== */
main.container { padding-bottom: 60px; }

/* === KPI CARDS === */
.kpis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 32px 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 18px 16px;
  position: relative;
  overflow: hidden;
  transition: border-color 200ms, box-shadow 200ms;
}

/* Accent top-line per card type */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  border-radius: 12px 12px 0 0;
}

.card-status::before   { background: linear-gradient(90deg, var(--good), transparent); }
.card-milestone::before{ background: linear-gradient(90deg, var(--blue), transparent); }
.card-commits::before  { background: linear-gradient(90deg, var(--accent), transparent); }
.card-recent::before   { background: linear-gradient(90deg, var(--accent), transparent); }

.card:hover {
  border-color: var(--line-bright);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.card p {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.card h3 { font-size: clamp(0.95rem, 2vw, 1.15rem); }

/* === PANELS === */
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 20px;
}

.panel h2 {
  font-size: 1rem;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Amber left-bar accent */
.panel h2::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 18px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* === CHARTS === */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.chart-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  height: 300px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.chart-card h3 {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.chart-card canvas {
  flex: 1;
  min-height: 0;
}

/* === MILESTONES === */
.milestones {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.milestone-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  transition: border-color 150ms, background 150ms;
}

.milestone-item:hover {
  border-color: var(--line-bright);
  background: rgba(255, 255, 255, 0.03);
}

.milestone-item h3 {
  font-size: 0.92rem;
  margin: 7px 0 4px;
}

/* === FUTURE GRID === */
.future-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.future-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  transition: border-color 150ms;
}

.future-item:hover { border-color: var(--line-bright); }

.future-item h3 {
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.future-item .meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 8px;
  line-height: 1.55;
}

.future-item strong { color: var(--accent); }

/* === STATUS CHIPS === */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.chip.done {
  background: var(--good-dim);
  color: #86efac;
  border: 1px solid rgba(34, 197, 94, 0.22);
}

.chip.current {
  background: var(--blue-dim);
  color: #93c5fd;
  border: 1px solid rgba(96, 165, 250, 0.22);
}

.chip.next {
  background: var(--accent-dim);
  color: #fcd34d;
  border: 1px solid rgba(245, 158, 11, 0.22);
}

/* === META TEXT === */
.meta {
  color: var(--muted-dark);
  font-size: 0.84rem;
  margin: 0;
  line-height: 1.5;
}

/* === TABLE === */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 540px;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 0.875rem;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.025);
  white-space: nowrap;
}

td { color: var(--text-soft); }

td:last-child {
  min-width: 200px;
  white-space: normal;
}

code {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.82em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 1px 5px;
  border-radius: 4px;
}

/* === SCREENSHOTS === */
.shots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

figure { margin: 0; }

figure figcaption {
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted-dark);
  margin-top: 8px;
  letter-spacing: 0.02em;
}

img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
  transition: border-color 200ms, box-shadow 200ms;
}

img:hover {
  border-color: var(--line-bright);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.zoomable {
  cursor: zoom-in;
}

/* ===================================================================
   LIGHTBOX
   =================================================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox[hidden] { display: none; }

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 6, 12, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: zoom-out;
}

.lightbox-img {
  position: relative;
  z-index: 1;
  max-width: min(92vw, 1100px);
  max-height: 88vh;
  width: auto;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--line-bright);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(245, 158, 11, 0.1);
  animation: lb-in 180ms ease-out;
  cursor: zoom-out;
}

@keyframes lb-in {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--line-bright);
  color: var(--muted);
  cursor: pointer;
  transition: background 150ms, color 150ms;
}

.lightbox-close:hover,
.lightbox-close:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
  outline: none;
}

/* ===================================================================
   FOOTER
   =================================================================== */
footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  margin-top: 20px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1200px, 92%);
  margin: 0 auto;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-brand {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--muted-dark);
}

.footer-brand span { color: var(--accent); }

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--muted-dark);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 150ms;
  cursor: pointer;
}

.footer-links a:hover { color: var(--text); }

/* ===================================================================
   RESPONSIVE — 4 breakpoints
   =================================================================== */

/* Laptop: hide terminal preview, collapse future grid */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .terminal-preview-wrapper { display: none; }

  .hero-content { max-width: unset; }

  .future-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Tablet: 2-col KPIs, 1-col charts + milestones + shots */
@media (max-width: 768px) {
  .hero { padding: 48px 0 40px; }

  .nav-links { display: none; }

  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .chart-grid,
  .milestones,
  .future-grid,
  .shots {
    grid-template-columns: 1fr;
  }

  .chart-card { min-height: 220px; }

  .panel { padding: 18px; }

  .panel h2 { font-size: 0.95rem; }

  .footer-inner { flex-direction: column; gap: 12px; }
}

/* Mobile: tighter spacing, 2-col KPIs remain */
@media (max-width: 480px) {
  .hero { padding: 36px 0 32px; }

  h1 { font-size: clamp(1.5rem, 6vw, 1.8rem); }

  .kpis { gap: 8px; }

  .card { padding: 14px 14px 12px; }

  .card h3 { font-size: 1rem; }

  .panel { padding: 14px; }

  .btn {
    min-height: 42px;
    padding: 0 16px;
    font-size: 0.9rem;
  }

  .btn-nav-cta span:not([class]) { display: none; } /* keep only icon on very small screens */

  .milestone-item { padding: 12px; }

  .future-item { padding: 12px; }

  .shots { gap: 10px; }

  .footer-links { flex-wrap: wrap; gap: 12px; }
}

/* Small phones */
@media (max-width: 360px) {
  .kpis { grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}