/* ─────────────────────────────────────────────
   Strata Reader — Design System (shadcn/ui tokens)
───────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* shadcn/ui token contract */
  --background:       #ffffff;
  --foreground:       #09090b;
  --card:             #ffffff;
  --card-foreground:  #09090b;
  --popover:          #ffffff;
  --popover-foreground: #09090b;
  --primary:          #18181b;
  --primary-foreground: #fafafa;
  --secondary:        #f4f4f5;
  --secondary-foreground: #18181b;
  --muted:            #f4f4f5;
  --muted-foreground: #71717a;
  --accent:           #f4f4f5;
  --accent-foreground: #18181b;
  --destructive:      #ef4444;
  --destructive-foreground: #fafafa;
  --border:           #e4e4e7;
  --input:            #e4e4e7;
  --ring:             #18181b;

  /* Semantic status colors (used sparingly) */
  --status-ready:       #16a34a;
  --status-ready-bg:    #f0fdf4;
  --status-ready-border:#bbf7d0;
  --status-processing:  #d97706;
  --status-processing-bg: #fffbeb;
  --status-processing-border: #fde68a;
  --status-failed:      #dc2626;
  --status-failed-bg:   #fef2f2;
  --status-failed-border: #fecaca;

  /* Risk severity */
  --risk-flag:  #dc2626;
  --risk-warn:  #d97706;
  --risk-ok:    #16a34a;

  /* Radius */
  --radius:     8px;
  --radius-sm:  4px;
  --radius-lg:  12px;
  --radius-xl:  16px;

  /* Shadows */
  --shadow-sm:  0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow:     0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg:  0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  /* Typography */
  --font:       Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono:  "SF Mono", "Fira Code", Consolas, monospace;

  /* Legacy aliases (used in HTML files) */
  --bg:         var(--background);
  --surface:    var(--card);
  --surface-2:  var(--muted);
  --fg:         var(--foreground);
  --subtle:     var(--muted-foreground);
  --border-2:   #d4d4d8;
  --blue:       #18181b;
  --blue-light: #f4f4f5;
  --blue-muted: #e4e4e7;
  --green:      var(--status-ready);
  --green-light:var(--status-ready-bg);
  --red:        var(--destructive);
  --red-light:  var(--status-failed-bg);
  --amber:      var(--status-processing);
  --amber-light:var(--status-processing-bg);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { font-family: var(--font); background: var(--background); color: var(--foreground); line-height: 1.5; }

/* ── Topnav ── */
.topnav {
  position: sticky; top: 0; z-index: 50;
  height: 56px; display: flex; align-items: center; padding: 0 24px;
  background: color-mix(in srgb, var(--background) 90%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-size: 15px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--foreground); text-decoration: none; flex-shrink: 0;
}
.nav-logo span { color: var(--foreground); opacity: 0.4; }
.nav-spacer { flex: 1; }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-link {
  display: flex; align-items: center; gap: 6px; padding: 6px 12px;
  border-radius: var(--radius-sm); font-size: 13.5px; font-weight: 500;
  color: var(--muted-foreground); text-decoration: none; cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border: none; background: none; font-family: var(--font);
}
.nav-link:hover { background: var(--muted); color: var(--foreground); }
.nav-link.is-active { color: var(--foreground); background: var(--muted); font-weight: 600; }

.nav-divider { width: 1px; height: 20px; background: var(--border); margin: 0 8px; }

.nav-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary); color: var(--primary-foreground);
  font-size: 13px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; border: none; flex-shrink: 0; margin-left: 6px;
  transition: opacity 0.15s;
}
.nav-avatar:hover { opacity: 0.8; }

.user-menu-wrap { position: relative; }
.user-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--popover); border: 1px solid var(--border);
  border-radius: var(--radius-lg); min-width: 200px;
  box-shadow: var(--shadow-lg); list-style: none; padding: 6px; display: none; z-index: 100;
}
.user-menu.is-open { display: block; }
.user-menu li a {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; color: var(--muted-foreground); text-decoration: none;
  border-radius: var(--radius-sm); font-size: 13.5px; transition: background 0.12s, color 0.12s;
}
.user-menu li a:hover { background: var(--muted); color: var(--foreground); }
.user-menu-divider { height: 1px; background: var(--border); margin: 4px 0; }
.user-menu-label {
  padding: 6px 10px 2px; font-size: 11px; font-weight: 600;
  color: var(--muted-foreground); text-transform: uppercase; letter-spacing: 0.06em;
}

/* ── Buttons (shadcn variants) ── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: var(--radius);
  font-size: 13.5px; font-weight: 500; font-family: var(--font);
  cursor: pointer; border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
  white-space: nowrap; text-decoration: none; line-height: 1;
}
/* default = shadcn "default" — near-black fill */
.btn-primary {
  background: var(--primary); color: var(--primary-foreground); border-color: var(--primary);
}
.btn-primary:hover { opacity: 0.88; }

/* outline variant */
.btn-ghost {
  background: transparent; color: var(--foreground); border-color: var(--border);
}
.btn-ghost:hover { background: var(--muted); }

/* secondary variant */
.btn-secondary {
  background: var(--secondary); color: var(--secondary-foreground); border-color: transparent;
}
.btn-secondary:hover { background: #e4e4e7; }

.btn-sm { padding: 5px 12px; font-size: 12.5px; }
.btn-xs { padding: 3px 8px; font-size: 11.5px; border-radius: var(--radius-sm); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }

/* ── Cards (shadcn Card) ── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-sm);
}
.card-header { padding: 20px 20px 0; }
.card-content { padding: 20px; }
.card-footer {
  padding: 0 20px 20px;
  display: flex; align-items: center; gap: 8px;
}

/* ── Badges (shadcn Badge) ── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: 9999px;
  font-size: 11.5px; font-weight: 500; border: 1px solid transparent;
}
/* default — near-black fill */
.badge-default {
  background: var(--primary); color: var(--primary-foreground);
}
/* secondary — muted gray */
.badge-secondary {
  background: var(--secondary); color: var(--secondary-foreground); border-color: var(--border);
}
/* outline */
.badge-outline {
  background: transparent; color: var(--foreground); border-color: var(--border);
}
/* status variants */
.badge-ready {
  background: var(--status-ready-bg); color: var(--status-ready);
  border-color: var(--status-ready-border);
}
.badge-processing {
  background: var(--status-processing-bg); color: var(--status-processing);
  border-color: var(--status-processing-border);
}
.badge-failed {
  background: var(--status-failed-bg); color: var(--status-failed);
  border-color: var(--status-failed-border);
}

/* ── Risk pills ── */
.risk-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 500; padding: 3px 9px;
  border-radius: 9999px; border: 1px solid var(--border);
  background: var(--muted); color: var(--foreground);
}
.risk-flag { color: var(--risk-flag); border-color: var(--status-failed-border); background: var(--status-failed-bg); }
.risk-warn { color: var(--risk-warn); border-color: var(--status-processing-border); background: var(--status-processing-bg); }
.risk-ok   { color: var(--risk-ok); border-color: var(--status-ready-border); background: var(--status-ready-bg); }

/* ── Input (shadcn Input) ── */
.input {
  width: 100%; padding: 8px 12px;
  border: 1px solid var(--input); border-radius: var(--radius);
  background: var(--background); color: var(--foreground);
  font-size: 13.5px; font-family: var(--font);
  outline: none; transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px rgb(24 24 27 / 0.08);
}
.input::placeholder { color: var(--muted-foreground); }

/* ── Separator ── */
.separator { height: 1px; background: var(--border); }

/* ── Sheet / Profile panel ── */
.panel-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 100;
  opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.panel-overlay.is-open { opacity: 1; pointer-events: all; }

.profile-panel {
  position: fixed; top: 0; right: 0; bottom: 0; width: 360px;
  background: var(--card); z-index: 101; display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -8px 0 30px rgb(0 0 0 / 0.12); border-left: 1px solid var(--border);
}
.profile-panel.is-open { transform: translateX(0); }

.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 20px 16px; border-bottom: 1px solid var(--border);
}
.panel-header h2 { font-size: 14px; font-weight: 600; }
.panel-close {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--muted-foreground); background: none; border: none;
  transition: background 0.15s;
}
.panel-close:hover { background: var(--muted); color: var(--foreground); }

.panel-body { flex: 1; overflow-y: auto; padding: 20px; }

.user-info {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 12px 0 24px; border-bottom: 1px solid var(--border); margin-bottom: 8px;
}
.user-avatar-lg {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--primary); color: var(--primary-foreground);
  font-size: 24px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px; box-shadow: 0 0 0 4px var(--muted);
}
.user-name  { font-size: 16px; font-weight: 700; margin-bottom: 3px; letter-spacing: -0.01em; }
.user-email { font-size: 12.5px; color: var(--muted-foreground); }

.panel-nav { display: flex; flex-direction: column; gap: 2px; padding: 8px 0; }
.panel-nav-item {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  border-radius: var(--radius); font-size: 14px; font-weight: 500; color: var(--foreground);
  cursor: pointer; text-decoration: none; transition: background 0.12s;
  border: none; background: none; font-family: var(--font); width: 100%; text-align: left;
}
.panel-nav-item:hover { background: var(--muted); }
.panel-nav-item.is-danger { color: var(--destructive); }
.panel-nav-item.is-danger:hover { background: var(--status-failed-bg); }
.panel-nav-item svg { color: var(--muted-foreground); flex-shrink: 0; }
.panel-nav-item.is-danger svg { color: var(--destructive); }
.nav-arrow { margin-left: auto; color: var(--muted-foreground); }

.panel-divider { height: 1px; background: var(--border); margin: 4px 0; }

.panel-section {
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; margin: 16px 0;
}
.panel-section-head {
  padding: 12px 14px 10px; background: var(--muted); border-bottom: 1px solid var(--border);
}
.panel-section-head h3 {
  font-size: 12px; font-weight: 700; color: var(--muted-foreground);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.panel-section-body { padding: 14px; }
.panel-section-body p { font-size: 13px; color: var(--muted-foreground); line-height: 1.5; margin-bottom: 10px; }

.referral-row {
  display: flex; border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden; background: var(--background);
}
.referral-row span { flex: 1; padding: 8px 12px; font-size: 13px; font-family: var(--font-mono); }
.btn-copy {
  padding: 8px 12px; background: var(--muted); border: none;
  border-left: 1px solid var(--border); font-size: 12.5px; font-weight: 600;
  color: var(--foreground); cursor: pointer; font-family: var(--font); transition: background 0.15s;
}
.btn-copy:hover { background: #e4e4e7; }

.plan-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 9px; border-radius: 9999px; font-size: 11.5px; font-weight: 600;
  background: var(--secondary); color: var(--secondary-foreground); border: 1px solid var(--border);
  margin-bottom: 8px;
}