/* ═══════════════════════════════════════════════════════════════
   M8 Forecast — Design System v2
   Inspired by Stratos ML: near-black substrate, orange-only accent,
   uppercase labels, minimal borders, data-dense layout.
═══════════════════════════════════════════════════════════════ */

/* ─── TOKENS ─────────────────────────────────────────────────── */
:root {
  /* Backgrounds — layered dark */
  --bg-base:      #0C0C0C;
  --bg-surface:   #121212;
  --bg-elevated:  #1A1A1A;
  --bg-subtle:    #222222;
  --bg-hover:     #282828;

  /* Borders — barely visible */
  --border:        #1E1E1E;
  --border-mid:    #2A2A2A;
  --border-strong: #383838;

  /* Text */
  --text-primary:   #FFFFFF;
  --text-secondary: #888888;
  --text-muted:     #444444;
  --text-inverse:   #0C0C0C;

  /* Brand — orange only */
  --brand-500: #FF5500;
  --brand-400: #FF6B1A;
  --brand-300: #FF8040;
  --brand-600: #E04A00;
  --brand-900: #1A0800;
  --brand-tint: rgba(255,85,0,.08);

  /* Semantic */
  --success-500: #22C55E;
  --success-900: #052E16;
  --warning-500: #F59E0B;
  --warning-900: #2D1B00;
  --danger-500:  #EF4444;
  --danger-900:  #2D0A0A;
  --info-500:    #38BDF8;
  --info-900:    #0A1F2E;

  /* Radius */
  --radius-sm:   3px;
  --radius-md:   6px;
  --radius-lg:   10px;
  --radius-xl:   14px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-md:    0 4px 16px rgba(0,0,0,.6);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.7);
  --shadow-brand: 0 0 0 2px rgba(255,85,0,.35);

  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* ─── RESET ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ─── LAYOUT ─────────────────────────────────────────────────── */
.container        { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.container--md    { max-width: 900px;  margin: 0 auto; padding: 0 40px; }
.container--narrow{ max-width: 720px;  margin: 0 auto; padding: 0 40px; }
.section          { padding: 96px 0; }
.section--alt     { background: var(--bg-surface); }
.section--border  { border-top: 1px solid var(--border); }

/* ─── NAVBAR ─────────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 56px;
  background: rgba(12,12,12,.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
}
.navbar__inner {
  max-width: 1200px; margin: 0 auto; padding: 0 40px;
  width: 100%; display: flex; align-items: center; justify-content: space-between;
}
.navbar__logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 15px; font-weight: 700;
  letter-spacing: .04em; text-transform: uppercase;
}
.navbar__logo-icon {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.navbar__logo-icon img {
  width: 100%; height: 100%;
  display: block;
  object-fit: contain;
}
.navbar__logo-text { color: var(--text-primary); }
.navbar__logo-text span { color: var(--brand-500); }

.navbar__links { display: flex; gap: 32px; }
.navbar__links a {
  font-size: 13px; font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: .02em;
  transition: color 120ms;
  position: relative;
}
.navbar__links a:hover { color: var(--text-primary); }
.navbar__links a.active {
  color: var(--brand-500);
}
.navbar__links a.active::after {
  content: ''; position: absolute; bottom: -18px; left: 0; right: 0;
  height: 2px; background: var(--brand-500);
}
.navbar__cta { display: flex; gap: 10px; align-items: center; }

/* ─── BUTTONS ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border: none; cursor: pointer; font-family: var(--font-sans);
  font-weight: 600; font-size: 13px;
  border-radius: var(--radius-md);
  transition: all 120ms ease; white-space: nowrap; text-decoration: none;
  letter-spacing: .01em;
}
.btn--sm  { padding: 7px 14px;  font-size: 12px; }
.btn--md  { padding: 9px 18px;  font-size: 13px; }
.btn--lg  { padding: 13px 28px; font-size: 14px; font-weight: 700; }

.btn--primary {
  background: var(--brand-500); color: #fff;
  border: 1px solid var(--brand-500);
}
.btn--primary:hover { background: var(--brand-400); border-color: var(--brand-400); }
.btn--primary:focus { box-shadow: var(--shadow-brand); outline: none; }

.btn--ghost {
  background: transparent; color: var(--text-secondary);
  border: 1px solid var(--border-mid);
}
.btn--ghost:hover { background: var(--bg-elevated); color: var(--text-primary); border-color: var(--border-strong); }

.btn--outline {
  background: transparent; color: var(--brand-500);
  border: 1px solid var(--brand-500);
}
.btn--outline:hover { background: var(--brand-tint); }

.btn--full { width: 100%; justify-content: center; }

/* ─── SECTION HEADERS — Stratos ML style ─────────────────────── */
/* Uppercase, underline accent (matches app's panel headers like "RUN FORECAST") */
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .12em;
  color: var(--text-muted); margin-bottom: 14px;
}
.section-label--orange { color: var(--brand-500); }

.section-title {
  font-size: clamp(26px, 3.5vw, 42px);
  font-weight: 800; letter-spacing: -.03em;
  line-height: 1.12; margin-bottom: 16px;
}
.section-sub {
  font-size: 16px; color: var(--text-secondary);
  line-height: 1.7; max-width: 560px;
}
.section-sub--center { margin: 0 auto; }
.text-center { text-align: center; }

/* Panel header — inline underline style (app pattern) */
.panel-header {
  font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-primary);
  border-bottom: 2px solid var(--brand-500);
  padding-bottom: 10px; margin-bottom: 20px;
  display: inline-block;
}

/* ─── BADGES ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 9px; border-radius: var(--radius-sm);
  font-size: 10px; font-weight: 700;
  font-family: var(--font-mono); letter-spacing: .06em; text-transform: uppercase;
  border: 1px solid transparent;
}
/* Orange as primary (replaces blue) */
.badge--orange{ background: var(--brand-900);    color: var(--brand-300);   border-color: rgba(255,85,0,.2);  }
.badge--blue  { background: var(--brand-900);    color: var(--brand-300);   border-color: rgba(255,85,0,.2);  }
.badge--green { background: var(--success-900);  color: var(--success-500); border-color: rgba(34,197,94,.2); }
.badge--amber { background: var(--warning-900);  color: var(--warning-500); border-color: rgba(245,158,11,.2);}
.badge--red   { background: var(--danger-900);   color: var(--danger-500);  border-color: rgba(239,68,68,.2); }
.badge--teal  { background: var(--info-900);     color: var(--info-500);    border-color: rgba(56,189,248,.2);}
.badge--muted { background: var(--bg-elevated);  color: var(--text-muted);  border-color: var(--border-mid);  }

/* Filter pill — Stratos ML top bar style */
.filter-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 600; letter-spacing: .02em;
  background: var(--bg-elevated); border: 1px solid var(--border-mid);
  color: var(--text-secondary); cursor: default;
}
.filter-pill--active {
  background: var(--bg-subtle); color: var(--text-primary);
  border-color: var(--border-strong);
}
.filter-pill--orange {
  background: var(--brand-900); color: var(--brand-300);
  border-color: rgba(255,85,0,.3);
}

/* ─── CARDS ──────────────────────────────────────────────────── */
.card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  transition: border-color 200ms;
}
.card:hover { border-color: var(--border-mid); }
.card--elevated { background: var(--bg-elevated); border-color: var(--border); }
.card--brand {
  border-color: var(--brand-500);
  background: linear-gradient(135deg, var(--bg-surface), var(--brand-900));
}

/* ─── FORM ───────────────────────────────────────────────────── */
.form-grid       { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group      { display: flex; flex-direction: column; gap: 6px; }
.form-group--full{ grid-column: 1 / -1; }
.form-group label{
  font-size: 11px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .08em;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-base); border: 1px solid var(--border-mid);
  border-radius: var(--radius-md); color: var(--text-primary);
  font-family: var(--font-sans); font-size: 14px; padding: 10px 12px;
  transition: border-color 120ms, box-shadow 120ms;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--brand-500); box-shadow: var(--shadow-brand);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group select { appearance: none; cursor: pointer; }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-privacy { font-size: 11px; color: var(--text-muted); text-align: center; margin-top: 10px; }

/* Orange checkbox — Stratos ML style */
.checkbox-row { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.checkbox-box {
  width: 14px; height: 14px;
  background: var(--brand-500); border-radius: 2px;
  flex-shrink: 0;
}
.checkbox-label { font-size: 13px; color: var(--text-secondary); }

/* ─── DATA TABLE ─────────────────────────────────────────────── */
.data-table {
  width: 100%; border-collapse: collapse;
  background: var(--bg-surface); border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--border);
}
.data-table th {
  background: var(--bg-elevated); padding: 12px 18px; text-align: left;
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--text-muted);
  border-bottom: 1px solid var(--border-mid);
}
.data-table th.col-featured {
  background: var(--brand-900); color: var(--brand-300);
  border-bottom: 2px solid var(--brand-500);
}
.data-table td {
  padding: 12px 18px; font-size: 13px;
  border-bottom: 1px solid var(--border); vertical-align: middle;
  color: var(--text-secondary);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table td.col-featured { background: rgba(255,85,0,.04); font-weight: 700; color: var(--text-primary); }
.data-table .check   { color: var(--success-500); font-weight: 700; }
.data-table .cross   { color: var(--text-muted); }
.data-table .partial { color: var(--warning-500); font-size: 12px; }

/* ─── DIVIDER ─────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

/* ─── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border); padding: 40px 0;
}
.footer__inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 20px;
}
.footer__logo {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em;
}
.footer__logo-icon {
  width: 22px; height: 22px; background: var(--brand-500);
  border-radius: 3px; display: flex; align-items: center;
  justify-content: center; font-size: 11px; font-weight: 800; color: #fff;
}
.footer__links { display: flex; gap: 24px; }
.footer__links a { font-size: 12px; color: var(--text-muted); transition: color 120ms; }
.footer__links a:hover { color: var(--text-secondary); }
.footer__copy { font-size: 12px; color: var(--text-muted); }

/* ─── PAGE HERO (inner pages) ────────────────────────────────── */
.page-hero { padding: 116px 0 64px; border-bottom: 1px solid var(--border); }
.page-hero--center { text-align: center; }

/* ─── KPI NUMBER ─────────────────────────────────────────────── */
.kpi-value {
  font-family: var(--font-mono);
  font-size: 40px; font-weight: 800;
  letter-spacing: -.03em; line-height: 1;
  color: var(--brand-500);
}
.kpi-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-muted); margin-top: 6px;
}

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .container, .container--md, .container--narrow { padding: 0 20px; }
  .navbar__links { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .page-hero { padding: 96px 0 48px; }
}