/* =======================================================================
   PlusEVData Design System v2
   Shared across static pillar pages. Tokens aligned with global.css.
   Load order: 1) navbar.css 2) design-system.css 3) page-specific overrides
   ======================================================================= */

/* ---- Tokens --------------------------------------------------------- */
:root {
  /* Surfaces */
  --bg:               #111113;
  --bg-alt:           #0d0d0f;
  --surface:          #1c1c1f;
  --surface-2:        #222226;
  --surface-hover:    #2a2a2e;
  --glass:            rgba(255,255,255,0.04);
  --glass-surface:    rgba(28,28,31,0.85);
  --glass-alt:        rgba(30,41,59,0.55);
  --navbar-bg:        rgba(17,17,19,0.95);

  /* Text */
  --text:             #fafafa;
  --text-muted:       #a1a1aa;
  --text-dim:         #71717a;

  /* Brand */
  --accent:           #10b981;
  --accent-hover:     #059669;
  --accent-glow:      rgba(16,185,129,0.18);
  --accent-bg:        rgba(16,185,129,0.1);
  --accent-2:         #8b5cf6;
  --accent-2-glow:    rgba(139,92,246,0.18);
  --accent-2-bg:      rgba(139,92,246,0.1);

  /* Semantic */
  --success:          #22c55e;
  --success-bg:       rgba(34,197,94,0.1);
  --danger:           #ef4444;
  --danger-bg:        rgba(239,68,68,0.1);
  --warning:          #f59e0b;
  --warning-bg:       rgba(245,158,11,0.1);
  --info:             #3b82f6;
  --info-bg:          rgba(59,130,246,0.1);

  /* Borders */
  --border:           rgba(255,255,255,0.08);
  --border-faint:     rgba(255,255,255,0.04);
  --border-strong:    rgba(255,255,255,0.13);

  /* Shape */
  --radius:           12px;
  --radius-sm:        8px;
  --radius-xs:        4px;
  --radius-pill:      100px;

  /* Layout */
  --navbar-h:         56px;
  --page-max:         960px;
  --container-max:    1400px;

  /* Effects */
  --blur:             16px;
  --shadow:           0 4px 24px rgba(0,0,0,0.35);
  --shadow-lg:        0 12px 48px rgba(0,0,0,0.5);
  --transition:       all 0.2s ease;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

/* ---- Base ----------------------------------------------------------- */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  padding-top: var(--navbar-h);
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; }

/* ---- Layout --------------------------------------------------------- */
.ds-page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

.ds-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Subtle ambient background glow */
.ds-bg {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 50% -15%,
      rgba(16,185,129,0.05) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 85%,
      rgba(139,92,246,0.04) 0%, transparent 50%);
  z-index: 0; pointer-events: none;
}

.ds-content {
  position: relative; z-index: 10;
}

/* ---- Glass card ----------------------------------------------------- */
.ds-card {
  background: var(--glass-alt);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

/* Clickable card variant */
.ds-card-link {
  display: flex; flex-direction: column;
  background: var(--glass-alt);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-decoration: none; color: inherit;
  transition: var(--transition), box-shadow 0.25s ease, transform 0.25s ease;
  position: relative; overflow: hidden;
}
.ds-card-link::after {
  content: ''; position: absolute; inset: 0;
  border-radius: var(--radius); opacity: 0;
  background: linear-gradient(135deg,
    rgba(16,185,129,0.04), rgba(139,92,246,0.02));
  transition: opacity 0.25s;
}
.ds-card-link:hover {
  transform: translateY(-5px);
  border-color: rgba(16,185,129,0.3);
  box-shadow: var(--shadow-lg), 0 0 36px var(--accent-glow);
}
.ds-card-link:hover::after { opacity: 1; }

/* ---- Section label -------------------------------------------------- */
.ds-label {
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-dim); margin-bottom: 0.875rem;
}

/* ---- Badges --------------------------------------------------------- */
.ds-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  padding: 4px 10px; border-radius: var(--radius-pill);
  border: 1px solid transparent;
}
.ds-dot {
  width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0;
}

/* Amber (research / no edge yet) */
.ds-badge-amber { background: var(--warning-bg); color: #fbbf24; border-color: rgba(245,158,11,0.2); }
.ds-badge-amber .ds-dot { background: var(--warning); }

/* Green (live / proven) */
.ds-badge-green { background: var(--accent-bg); color: #34d399; border-color: rgba(16,185,129,0.2); }
.ds-badge-green .ds-dot { background: var(--accent); animation: ds-pulse 2s infinite; }

/* Blue (research phase) */
.ds-badge-blue { background: var(--info-bg); color: #93c5fd; border-color: rgba(59,130,246,0.2); }
.ds-badge-blue .ds-dot { background: var(--info); }

/* Purple (model) */
.ds-badge-purple { background: var(--accent-2-bg); color: #c4b5fd; border-color: rgba(139,92,246,0.2); }
.ds-badge-purple .ds-dot { background: var(--accent-2); }

/* ---- Banners -------------------------------------------------------- */
.ds-banner {
  display: flex; align-items: flex-start; gap: 1rem;
  border-radius: var(--radius); padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem; line-height: 1.6;
}
.ds-banner-icon {
  width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px;
}
.ds-banner-icon svg { width: 100%; height: 100%; }
.ds-banner-body h3 { font-size: 0.875rem; font-weight: 700; margin-bottom: 0.3rem; }
.ds-banner-body p  { font-size: 0.85rem; line-height: 1.65; }
.ds-banner-body p + p { margin-top: 0.65rem; }

.ds-banner-amber {
  background: rgba(245,158,11,0.06);
  border: 1px solid rgba(245,158,11,0.2);
}
.ds-banner-amber h3 { color: #fbbf24; }
.ds-banner-amber p  { color: #fcd34d; opacity: 0.88; }

.ds-banner-info {
  background: rgba(59,130,246,0.05);
  border: 1px solid rgba(59,130,246,0.16);
}
.ds-banner-info h3 { color: #93c5fd; }
.ds-banner-info p  { color: #bfdbfe; opacity: 0.88; }

.ds-banner-danger {
  background: rgba(239,68,68,0.05);
  border: 1px solid rgba(239,68,68,0.18);
}
.ds-banner-danger h3 { color: #fca5a5; }
.ds-banner-danger p  { color: #fca5a5; opacity: 0.85; }

.ds-banner-indigo {
  background: rgba(99,102,241,0.05);
  border: 1px solid rgba(99,102,241,0.15);
}
.ds-banner-indigo h3 { color: #a5b4fc; }
.ds-banner-indigo p  { color: #c7d2fe; opacity: 0.88; }

/* Full-width text-only banner (no flex) */
.ds-note {
  border-radius: var(--radius); padding: 1rem 1.25rem;
  margin-bottom: 1.5rem; font-size: 0.875rem; line-height: 1.7;
}
.ds-note-amber {
  background: rgba(245,158,11,0.06); border: 1px solid rgba(245,158,11,0.18);
  color: #fcd34d;
}
.ds-note-amber strong { color: #fbbf24; }
.ds-note-indigo {
  background: rgba(99,102,241,0.05); border: 1px solid rgba(99,102,241,0.15);
  color: #c7d2fe;
}
.ds-note-indigo em { opacity: 0.75; }
.ds-note-danger {
  background: rgba(239,68,68,0.05); border: 1px solid rgba(239,68,68,0.18);
  color: #fca5a5;
}
.ds-note-danger strong { color: #f87171; }

/* Milestone card */
.ds-milestone {
  background: rgba(16,185,129,0.05);
  border: 1px solid rgba(16,185,129,0.13);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-size: 0.875rem; color: #6ee7b7; line-height: 1.65;
}
.ds-milestone strong { color: #34d399; }

/* ---- Tables --------------------------------------------------------- */
.ds-table { width: 100%; border-collapse: collapse; }
.ds-table th {
  text-align: left; font-size: 0.7rem; font-weight: 700;
  color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.06em;
  padding: 0.6rem 1rem; border-bottom: 1px solid var(--border);
}
.ds-table td {
  padding: 0.875rem 1rem; font-size: 0.875rem;
  vertical-align: top; border-bottom: 1px solid var(--border-faint);
}
.ds-table tr:last-child td { border-bottom: none; }
.ds-table .t-name  { font-weight: 600; color: var(--text); }
.ds-table .t-val   { font-weight: 700; color: var(--accent); }
.ds-table .t-val-amber { font-weight: 700; color: #fbbf24; }
.ds-table .t-dim   { color: var(--text-muted); font-size: 0.82rem; }
.ds-table .t-warn  {
  color: #fbbf24; font-size: 0.8rem; opacity: 0.85; font-style: italic;
}
.ds-table .t-warn::before { content: '⚠ '; }

/* Rank badge (opportunity table) */
.ds-rank {
  display: inline-flex; width: 28px; height: 28px; border-radius: 50%;
  background: var(--warning-bg); color: #fbbf24; font-weight: 700;
  align-items: center; justify-content: center; font-size: 0.78rem;
}

/* ---- Buttons -------------------------------------------------------- */
.ds-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0.5rem 1.1rem; border-radius: var(--radius-sm);
  font-family: inherit; font-size: 0.875rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
  border: 1px solid var(--border); text-decoration: none; white-space: nowrap;
}
.ds-btn-green {
  background: var(--accent-bg); border-color: rgba(16,185,129,0.28);
  color: #6ee7b7;
}
.ds-btn-green:hover {
  background: rgba(16,185,129,0.18);
  border-color: rgba(16,185,129,0.5);
  color: #34d399;
}
.ds-btn-purple {
  background: var(--accent-2-bg); border-color: rgba(139,92,246,0.28);
  color: #c4b5fd;
}
.ds-btn-purple:hover {
  background: rgba(139,92,246,0.2);
  border-color: rgba(139,92,246,0.5);
}
.ds-btn-amber {
  background: var(--warning-bg); border-color: rgba(245,158,11,0.28);
  color: #fbbf24;
}
.ds-btn-amber:hover {
  background: rgba(245,158,11,0.18);
  border-color: rgba(245,158,11,0.5);
}

/* ---- Breadcrumb ----------------------------------------------------- */
.ds-breadcrumb {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-muted); text-decoration: none;
  font-size: 0.875rem; font-weight: 500; margin-bottom: 2rem;
  transition: color 0.2s;
}
.ds-breadcrumb:hover { color: var(--text); }
.ds-breadcrumb svg { width: 16px; height: 16px; stroke: currentColor; }

/* ---- Icon blocks (replaces emoji-as-UI) ----------------------------- */
.ds-icon {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.ds-icon svg { width: 22px; height: 22px; stroke: currentColor; }
.ds-icon-racing    { background: rgba(16,185,129,0.1);  color: #34d399; }
.ds-icon-investing { background: rgba(16,185,129,0.1);  color: #34d399; }
.ds-icon-market    { background: rgba(245,158,11,0.1);  color: #fbbf24; }
.ds-icon-purple    { background: rgba(139,92,246,0.1);  color: #c4b5fd; }

/* ---- Hero ----------------------------------------------------------- */
.ds-hero {
  display: flex; align-items: flex-start; gap: 1.25rem;
  margin-bottom: 2rem; flex-wrap: wrap;
}
.ds-hero-text h1 {
  font-size: clamp(1.75rem, 4vw, 2.2rem);
  font-weight: 800; letter-spacing: -0.02em; margin-bottom: 0.5rem;
}
.ds-hero-text h1 .hl-green {
  background: linear-gradient(135deg, #6ee7b7, #10b981);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ds-hero-text h1 .hl-purple {
  background: linear-gradient(135deg, #c4b5fd, #8b5cf6);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ds-hero-text h1 .hl-amber {
  background: linear-gradient(135deg, #fde68a, #f59e0b);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Page header (hub pages) ---------------------------------------- */
.ds-page-header { text-align: center; margin-bottom: 2.75rem; }
.ds-page-header h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem); font-weight: 800;
  letter-spacing: -0.025em; margin-bottom: 0.875rem;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ds-page-header p {
  color: var(--text-muted); font-size: 1rem;
  max-width: 540px; margin: 0 auto; line-height: 1.7;
}

/* ---- Pillar grid ---------------------------------------------------- */
.ds-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
@media (max-width: 860px) { .ds-pillars-grid { grid-template-columns: 1fr; } }

/* ---- Section spacing ------------------------------------------------ */
.ds-section { margin-bottom: 1.5rem; }

/* ---- Links row ------------------------------------------------------ */
.ds-links { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ---- Divider -------------------------------------------------------- */
.ds-hr { height: 1px; background: var(--border-faint); margin: 1.25rem 0; }

/* ---- States --------------------------------------------------------- */
.ds-loading { color: var(--text-dim); font-size: 0.875rem; opacity: 0.6; }
.ds-error   { color: var(--danger); font-size: 0.85rem; }
.ds-ts      { text-align: right; font-size: 0.75rem; color: var(--text-dim); margin-top: 1rem; }

/* ---- Footer --------------------------------------------------------- */
.ds-footer {
  text-align: center; color: var(--text-dim); font-size: 0.78rem;
  margin-top: 4rem; padding-bottom: 2rem; line-height: 1.6;
}
.ds-footer a { color: var(--text-dim); text-decoration: none; }
.ds-footer a:hover { color: var(--text-muted); }

/* ---- Cards grid (homepage tools) ------------------------------------ */
.ds-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem; width: 100%; max-width: 1080px; margin: 0 auto;
}
@media (max-width: 900px)  { .ds-tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px)  { .ds-tools-grid { grid-template-columns: 1fr; } }

.ds-tool-card {
  display: flex; flex-direction: column;
  background: var(--glass-alt);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.75rem;
  text-decoration: none; color: inherit;
  transition: var(--transition), box-shadow 0.25s, transform 0.25s;
  min-height: 200px;
}
.ds-tool-card:hover {
  transform: translateY(-5px);
  border-color: rgba(16,185,129,0.28);
  box-shadow: var(--shadow-lg), 0 0 28px var(--accent-glow);
}
.ds-tool-card.coming {
  opacity: 0.7; border-style: dashed;
  background: rgba(28,28,31,0.35);
}
.ds-tool-card.coming:hover {
  transform: none; box-shadow: none;
  border-color: var(--border);
}

.ds-tool-icon {
  width: 46px; height: 46px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-bg); margin-bottom: 1.25rem;
  color: var(--accent);
}
.ds-tool-icon svg { width: 22px; height: 22px; stroke: currentColor; }

.ds-tool-title {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 0.6rem;
  display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
}
.ds-tool-desc {
  color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; flex-grow: 1;
}
.ds-tool-arrow {
  margin-top: 1.25rem; color: var(--text-dim);
  font-size: 1.1rem; transition: all 0.25s;
}
.ds-tool-card:hover .ds-tool-arrow { color: var(--accent); transform: translateX(4px); }

/* Live status badges used in tool cards */
.ds-status-live {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent); background: var(--accent-bg);
  padding: 3px 8px; border-radius: var(--radius-pill);
}
.ds-status-live .ds-dot { background: var(--accent); animation: ds-pulse 2s infinite; }
.ds-status-beta {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #c4b5fd; background: var(--accent-2-bg);
  padding: 3px 8px; border-radius: var(--radius-pill);
}

/* ---- Animations ----------------------------------------------------- */
@keyframes ds-pulse {
  0%,100% { opacity:1; box-shadow: 0 0 0 0 rgba(16,185,129,0.4); }
  50%      { opacity:0.8; box-shadow: 0 0 0 5px rgba(16,185,129,0); }
}
@keyframes ds-fade-in {
  from { opacity:0; transform:translateY(6px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ---- Responsive ----------------------------------------------------- */
@media (max-width: 640px) {
  .ds-page { padding: 2rem 1rem 4rem; }
  .ds-hero-text h1 { font-size: 1.6rem; }
  .ds-card { padding: 1.25rem; }
  .ds-table th, .ds-table td { padding: 0.7rem 0.75rem; }
}