/* =========================================================================
   HelpPilot — Design System
   Single source of truth: tokens, primitives, components, motion.
   Sections: 1) Tokens  2) Base  3) Layout  4) Components  5) Chat
             6) Login  7) Onboarding  8) Admin  9) Utilities
   ========================================================================= */

/* ─────────────── 1. Tokens ─────────────── */

:root,
:root[data-theme="light"] {
  /* Surfaces */
  --c-bg:            #f6f7fb;
  --c-bg-elevated:   #ffffff;
  --c-bg-subtle:     #fafbfc;
  --c-bg-hover:      #f1f5f9;

  /* Text */
  --c-fg:            #0f172a;
  --c-muted:         #64748b;
  --c-subtle:        #94a3b8;
  --c-fg-on-primary: #ffffff;

  /* Borders */
  --c-border:        #e6e8ef;
  --c-border-soft:   #eef0f5;
  --c-border-strong: #cbd5e1;

  /* Brand */
  --c-primary:       #4f46e5;
  --c-primary-hover: #4338ca;
  --c-primary-soft:  #eef2ff;
  --c-accent:        #8b5cf6;
  --c-primary-rgb:   99, 102, 241;
  --grad-primary:    linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

  /* Status */
  --c-ok:            #059669;
  --c-ok-bg:         #ecfdf5;
  --c-warn:          #d97706;
  --c-warn-bg:       #fffbeb;
  --c-err:           #dc2626;
  --c-err-bg:        #fef2f2;
  --c-info:          #0284c7;
  --c-info-bg:       #f0f9ff;

  /* Chat-specific */
  --c-user-bubble:    #4f46e5;
  --c-user-bubble-fg: #ffffff;
  --c-bot-bubble:     #ffffff;
  --c-code-bg:        rgba(15, 23, 42, 0.06);
  --c-code-bg-on-primary: rgba(255, 255, 255, 0.2);

  /* Inputs */
  --c-input-bg:    #ffffff;
  --c-input-fg:    #0f172a;
  --c-overlay:     rgba(15, 23, 42, 0.5);
  --c-scrollbar:   #d1d5db;

  /* Shadows (rgb so we can vary alpha per-mode) */
  --c-shadow-rgb:  15, 23, 42;
  --shadow-xs:  0 1px 1px rgba(var(--c-shadow-rgb), 0.04);
  --shadow-sm:  0 1px 2px rgba(var(--c-shadow-rgb), 0.05);
  --shadow-md:  0 4px 12px rgba(var(--c-shadow-rgb), 0.07);
  --shadow-lg:  0 12px 40px rgba(var(--c-shadow-rgb), 0.10);
  --shadow-glow-primary: 0 4px 12px rgba(var(--c-primary-rgb), 0.30);

  /* Motion */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast:  120ms;
  --t-base:  180ms;
  --t-slow:  280ms;

  /* Radius */
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-2xl: 20px;
  --r-pill: 999px;

  /* Spacing scale (for inline use) */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;

  /* Typography */
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
                Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono:  ui-monospace, SFMono-Regular, Menlo, Consolas,
                'Liberation Mono', monospace;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --c-bg:            #0a0d14;
  --c-bg-elevated:   #131821;
  --c-bg-subtle:     #1a1f2c;
  --c-bg-hover:      #1f2533;

  --c-fg:            #e2e8f0;
  --c-muted:         #94a3b8;
  --c-subtle:        #64748b;
  --c-fg-on-primary: #ffffff;

  --c-border:        #232a3a;
  --c-border-soft:   #1a1f2c;
  --c-border-strong: #364153;

  --c-primary:       #818cf8;
  --c-primary-hover: #a5b4fc;
  --c-primary-soft:  rgba(129, 140, 248, 0.13);
  --c-accent:        #a78bfa;
  --c-primary-rgb:   129, 140, 248;
  --grad-primary:    linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);

  --c-ok:            #34d399;
  --c-ok-bg:         rgba(52, 211, 153, 0.13);
  --c-warn:          #fbbf24;
  --c-warn-bg:       rgba(251, 191, 36, 0.13);
  --c-err:           #f87171;
  --c-err-bg:        rgba(248, 113, 113, 0.13);
  --c-info:          #38bdf8;
  --c-info-bg:       rgba(56, 189, 248, 0.13);

  --c-user-bubble:    #6366f1;
  --c-user-bubble-fg: #ffffff;
  --c-bot-bubble:     #131821;
  --c-code-bg:        rgba(255, 255, 255, 0.08);
  --c-code-bg-on-primary: rgba(255, 255, 255, 0.18);

  --c-input-bg:    #131821;
  --c-input-fg:    #e2e8f0;
  --c-overlay:     rgba(0, 0, 0, 0.65);
  --c-scrollbar:   #2d3548;

  --c-shadow-rgb:  0, 0, 0;
  --shadow-xs:  0 1px 1px rgba(0, 0, 0, 0.20);
  --shadow-sm:  0 1px 2px rgba(0, 0, 0, 0.30);
  --shadow-md:  0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-lg:  0 12px 40px rgba(0, 0, 0, 0.55);
  --shadow-glow-primary: 0 4px 16px rgba(var(--c-primary-rgb), 0.35);

  color-scheme: dark;
}

/* Honor system pref when the user hasn't picked one explicitly. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --c-bg:            #0a0d14;
    --c-bg-elevated:   #131821;
    --c-bg-subtle:     #1a1f2c;
    --c-bg-hover:      #1f2533;
    --c-fg:            #e2e8f0;
    --c-muted:         #94a3b8;
    --c-subtle:        #64748b;
    --c-border:        #232a3a;
    --c-border-soft:   #1a1f2c;
    --c-primary:       #818cf8;
    --c-primary-hover: #a5b4fc;
    --c-primary-soft:  rgba(129, 140, 248, 0.13);
    --c-primary-rgb:   129, 140, 248;
    --grad-primary:    linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
    --c-ok-bg:         rgba(52, 211, 153, 0.13);
    --c-warn-bg:       rgba(251, 191, 36, 0.13);
    --c-err-bg:        rgba(248, 113, 113, 0.13);
    --c-bot-bubble:    #131821;
    --c-code-bg:       rgba(255, 255, 255, 0.08);
    --c-input-bg:      #131821;
    --c-input-fg:      #e2e8f0;
    --c-overlay:       rgba(0, 0, 0, 0.65);
    --c-scrollbar:     #2d3548;
    --c-shadow-rgb:    0, 0, 0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.30);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
    color-scheme: dark;
  }
}

/* ─────────────── 2. Base ─────────────── */

*, *::before, *::after { box-sizing: border-box; }

html, body { height: 100%; }

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--c-fg);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01';
  transition: background-color var(--t-base) var(--ease-out),
              color var(--t-base) var(--ease-out);
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Custom scrollbars (light + dark via tokens) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--c-scrollbar);
  border-radius: var(--r-pill);
  border: 2px solid var(--c-bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--c-border-strong); }

/* Reduce motion if user asks */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ─────────────── 3. Layout ─────────────── */

.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

header.app-header {
  background: var(--c-bg-elevated);
  border-bottom: 1px solid var(--c-border);
  padding: 0.6rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-xs);
  z-index: 5;
  transition: background-color var(--t-base) var(--ease-out),
              border-color var(--t-base) var(--ease-out);
}

.app-main {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand .logo {
  width: 32px; height: 32px;
  border-radius: var(--r-md);
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: var(--shadow-glow-primary);
}
.brand .name { letter-spacing: -0.01em; }
.brand .domain {
  color: var(--c-subtle);
  font-weight: 400;
  font-size: 0.78rem;
  margin-left: 0.3rem;
}
.brand small {
  color: var(--c-subtle);
  font-weight: 400;
  margin-left: 0.4rem;
  font-size: 0.8rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tenant-info {
  color: var(--c-muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tenant-info .pill {
  background: var(--c-primary-soft);
  color: var(--c-primary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--r-pill);
  font-size: 0.78rem;
  font-weight: 500;
}

/* Sidebar */
aside.app-sidebar {
  width: 260px;
  background: var(--c-bg-elevated);
  border-right: 1px solid var(--c-border);
  padding: 1rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  overflow-y: auto;
  transition: background-color var(--t-base) var(--ease-out),
              border-color var(--t-base) var(--ease-out);
}
aside.app-sidebar h3 {
  font-size: 0.72rem;
  color: var(--c-subtle);
  margin: 1rem 0.5rem 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}
aside.app-sidebar h3:first-child { margin-top: 0; }

/* ─────────────── 4. Components ─────────────── */

/* ── Theme toggle ── */
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: var(--r-md);
  background: transparent;
  border: 1px solid var(--c-border);
  color: var(--c-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background-color var(--t-fast), border-color var(--t-fast),
              color var(--t-fast), transform var(--t-fast);
  font-family: inherit;
}
.theme-toggle:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-primary-soft);
}
.theme-toggle:active { transform: scale(0.95); }
.theme-toggle svg {
  width: 18px; height: 18px;
  transition: transform var(--t-base) var(--ease-out);
}
:root[data-theme="light"] .theme-icon-sun,
:root:not([data-theme]) .theme-icon-sun { display: block; }
:root[data-theme="light"] .theme-icon-moon,
:root:not([data-theme]) .theme-icon-moon { display: none; }
:root[data-theme="dark"] .theme-icon-sun { display: none; }
:root[data-theme="dark"] .theme-icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-icon-sun  { display: none; }
  :root:not([data-theme]) .theme-icon-moon { display: block; }
}

/* ── Buttons ── */
button {
  font-family: inherit;
}

.btn,
button.primary, button.secondary, button.ghost, button.danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border-radius: var(--r-md);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.88rem;
  font-family: inherit;
  border: 1px solid transparent;
  background: transparent;
  color: var(--c-fg);
  transition: background-color var(--t-fast), border-color var(--t-fast),
              color var(--t-fast), box-shadow var(--t-fast),
              transform var(--t-fast);
  user-select: none;
}
.btn:disabled,
button.primary:disabled, button.secondary:disabled,
button.ghost:disabled, button.danger:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary,
button.primary {
  background: var(--grad-primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: var(--shadow-glow-primary);
}
.btn-primary:hover:not(:disabled),
button.primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(var(--c-primary-rgb), 0.40);
}
.btn-primary:active:not(:disabled),
button.primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary,
button.secondary {
  background: var(--c-bg-elevated);
  color: var(--c-fg);
  border-color: var(--c-border);
}
.btn-secondary:hover:not(:disabled),
button.secondary:hover:not(:disabled) {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.btn-ghost,
button.ghost {
  background: transparent;
  color: var(--c-muted);
  padding: 0.35rem 0.7rem;
}
.btn-ghost:hover:not(:disabled),
button.ghost:hover:not(:disabled) {
  color: var(--c-primary);
  background: var(--c-primary-soft);
}

.btn-danger,
button.danger {
  background: var(--c-bg-elevated);
  color: var(--c-err);
  border-color: var(--c-err);
}
.btn-danger:hover:not(:disabled),
button.danger:hover:not(:disabled) {
  background: var(--c-err-bg);
}

/* Quick-button (sidebar entry) */
.quick-btn {
  width: 100%;
  display: flex; align-items: center; gap: 0.65rem;
  text-align: left;
  padding: 0.6rem 0.7rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--c-fg);
  font-family: inherit;
  transition: background-color var(--t-fast), border-color var(--t-fast),
              transform var(--t-fast);
}
.quick-btn:hover {
  background: var(--c-primary-soft);
  border-color: rgba(var(--c-primary-rgb), 0.18);
}
.quick-btn:active { transform: scale(0.99); }
.quick-btn .ico {
  width: 28px; height: 28px;
  border-radius: var(--r-sm);
  background: var(--c-primary-soft);
  color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.quick-btn .label { flex: 1; }
.quick-btn .label small {
  display: block;
  font-size: 0.74rem;
  color: var(--c-subtle);
  font-weight: 400;
  margin-top: 1px;
}

/* ── Cards ── */
.card {
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: background-color var(--t-base), border-color var(--t-base);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.55rem;
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--c-bg-subtle);
  color: var(--c-muted);
}
.badge.ok    { background: var(--c-ok-bg);   color: var(--c-ok);   }
.badge.warn  { background: var(--c-warn-bg); color: var(--c-warn); }
.badge.err   { background: var(--c-err-bg);  color: var(--c-err);  }
.badge.muted { background: var(--c-bg-hover); color: var(--c-muted); }
.badge.info  { background: var(--c-info-bg); color: var(--c-info); }

/* ── Inputs ── */
input[type=text], input[type=password], input[type=number],
input[type=email], input[type=date], input[type=search],
select, textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--c-input-bg);
  color: var(--c-input-fg);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(var(--c-primary-rgb), 0.15);
}
input::placeholder, textarea::placeholder { color: var(--c-subtle); }

label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--c-fg);
}
label small {
  color: var(--c-subtle);
  font-weight: 400;
  font-size: 0.78rem;
}

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--c-overlay);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
  overflow-y: auto;
  animation: fadeIn var(--t-base) var(--ease-out);
}
.modal-overlay.show { display: flex; }
.modal-overlay.align-top { align-items: flex-start; padding-top: 3rem; }

.modal-card {
  background: var(--c-bg-elevated);
  padding: 1.75rem;
  border-radius: var(--r-xl);
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--shadow-lg);
  width: 540px;
  max-width: 100%;
  animation: scaleIn var(--t-base) var(--ease-out);
}
.modal-card h3 { margin: 0 0 0.4rem; font-size: 1.15rem; }
.modal-card .sub,
.modal-card p {
  color: var(--c-muted);
  font-size: 0.9rem;
  margin: 0 0 1rem;
}
.modal-card textarea {
  min-height: 110px;
  resize: vertical;
}
.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* ── Status messages ── */
.err-msg, .ok-msg {
  padding: 0.55rem 0.75rem;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  display: none;
}
.err-msg.show, .ok-msg.show { display: block; }
.err-msg { color: var(--c-err); background: var(--c-err-bg); }
.ok-msg  { color: var(--c-ok);  background: var(--c-ok-bg);  }

/* ── Toasts (Phase 2 will use these) ── */
.toast-stack {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 300;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  min-width: 240px;
  max-width: 380px;
  padding: 0.75rem 1rem;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--c-fg);
  animation: toastIn var(--t-slow) var(--ease-out);
}
.toast.ok    { border-left-color: var(--c-ok); }
.toast.warn  { border-left-color: var(--c-warn); }
.toast.err   { border-left-color: var(--c-err); }
.toast.info  { border-left-color: var(--c-info); }
.toast .ico { font-size: 1.05rem; flex-shrink: 0; line-height: 1.2; }
.toast .body { flex: 1; line-height: 1.4; }
.toast .close {
  background: transparent;
  border: 0;
  color: var(--c-subtle);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0;
  margin-left: 0.25rem;
  line-height: 1;
}
.toast .close:hover { color: var(--c-fg); }
.toast.leaving { animation: toastOut var(--t-base) var(--ease-in-out) forwards; }

/* ─────────────── 5. Chat Module ─────────────── */

.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--c-bg);
  position: relative;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scroll-behavior: smooth;
}

/* Welcome */
.welcome {
  max-width: 600px;
  align-self: center;
  text-align: center;
  padding: 2rem 1.5rem;
  margin-top: auto;
  margin-bottom: auto;
  animation: fadeInUp var(--t-slow) var(--ease-out);
}
.welcome .hero {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: 1.6rem;
  margin: 0 auto 1rem;
  box-shadow: var(--shadow-glow-primary);
}
.welcome h2 {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}
.welcome p { color: var(--c-muted); margin: 0 0 1.25rem; }

.welcome .suggestions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  max-width: 480px;
  margin: 0 auto;
}
.welcome .sug {
  padding: 0.7rem 0.85rem;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  cursor: pointer;
  text-align: left;
  font-size: 0.88rem;
  color: var(--c-fg);
  font-family: inherit;
  transition: border-color var(--t-fast), box-shadow var(--t-fast),
              transform var(--t-fast), background-color var(--t-fast);
}
.welcome .sug:hover {
  border-color: var(--c-primary);
  box-shadow: 0 4px 12px rgba(var(--c-primary-rgb), 0.15);
  transform: translateY(-1px);
}
.welcome .sug strong { display: block; margin-bottom: 2px; }
.welcome .sug small { color: var(--c-subtle); }

/* Bubbles */
.msg-row {
  display: flex;
  gap: 0.6rem;
  max-width: 85%;
  animation: fadeInUp var(--t-base) var(--ease-out);
}
.msg-row.user { align-self: flex-end; flex-direction: row-reverse; }
.avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: white;
  margin-top: 2px;
}
.avatar.user { background: var(--c-muted); }
.avatar.bot  { background: var(--grad-primary); }

.bubble {
  padding: 0.7rem 0.95rem;
  border-radius: 14px;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-width: 100%;
}
.msg-row.user .bubble {
  background: var(--c-user-bubble);
  color: var(--c-user-bubble-fg);
  border-bottom-right-radius: 4px;
}
.msg-row.bot .bubble {
  background: var(--c-bot-bubble);
  border: 1px solid var(--c-border-soft);
  border-bottom-left-radius: 4px;
  box-shadow: var(--shadow-sm);
}

.bubble strong { font-weight: 600; }
.bubble em { font-style: italic; }
.bubble code {
  background: var(--c-code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
  font-family: var(--font-mono);
}
.msg-row.user .bubble code { background: var(--c-code-bg-on-primary); }
.bubble ul, .bubble ol { margin: 0.4rem 0; padding-left: 1.3rem; }
.bubble ul li, .bubble ol li { margin: 0.15rem 0; }
.bubble p { margin: 0.4rem 0; }
.bubble p:first-child { margin-top: 0; }
.bubble p:last-child { margin-bottom: 0; }
.bubble h1, .bubble h2, .bubble h3, .bubble h4 {
  margin: 0.6rem 0 0.3rem;
  font-weight: 600;
  line-height: 1.3;
}
.bubble h3 { font-size: 1rem; }
.bubble h4 { font-size: 0.92rem; color: var(--c-muted); }

.bot-wrap {
  align-self: flex-start;
  max-width: 85%;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

/* Tool activity */
.tool-group {
  margin-left: 38px;
  max-width: calc(100% - 38px);
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  animation: fadeInUp var(--t-base) var(--ease-out);
}
.tool-group + .tool-group { margin-top: -0.5rem; }
.tool-header {
  display: flex; align-items: center; gap: 0.55rem;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  color: var(--c-fg);
  transition: background-color var(--t-fast);
}
.tool-header:hover { background: var(--c-bg-subtle); }
.tool-header .spinner {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 2px solid var(--c-border);
  border-top-color: var(--c-primary);
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}
.tool-header.done .spinner {
  border: 0;
  background: var(--c-ok-bg);
  color: var(--c-ok);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  animation: none;
}
.tool-header.done .spinner::before { content: '✓'; font-weight: 700; }
.tool-header.errored .spinner {
  border: 0;
  background: var(--c-warn-bg);
  color: var(--c-warn);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  animation: none;
}
.tool-header.errored .spinner::before { content: '⚠'; }
.tool-header .label { flex: 1; }
.tool-header .label .friendly { font-weight: 500; }
.tool-header .label .meta {
  display: block;
  font-size: 0.78rem;
  color: var(--c-subtle);
  margin-top: 1px;
}
.tool-header .chevron {
  color: var(--c-subtle);
  font-size: 0.7rem;
  transition: transform var(--t-base);
}
.tool-group.expanded .tool-header .chevron { transform: rotate(180deg); }
.tool-body {
  display: none;
  border-top: 1px solid var(--c-border-soft);
  background: var(--c-bg-subtle);
  padding: 0.6rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-muted);
  max-height: 280px;
  overflow: auto;
}
.tool-group.expanded .tool-body { display: block; }
.tool-body pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}
.tool-body .section-title {
  font-weight: 600;
  color: var(--c-fg);
  margin: 0.3rem 0 0.2rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
}
.tool-body .section-title:first-child { margin-top: 0; }

/* Typing indicator */
.typing { display: flex; gap: 4px; padding: 0.5rem 0; }
.typing span {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-subtle);
  animation: typing 1.2s infinite ease-in-out;
}
.typing span:nth-child(2) { animation-delay: 0.15s; }
.typing span:nth-child(3) { animation-delay: 0.3s; }

/* Error card (SSE error event) */
.error-card {
  align-self: flex-start;
  max-width: 85%;
  margin-left: 38px;
  background: var(--c-err-bg);
  border: 1px solid var(--c-err);
  color: var(--c-err);
  padding: 0.7rem 0.95rem;
  border-radius: var(--r-lg);
  animation: fadeInUp var(--t-base) var(--ease-out);
}
.error-card .err-title { font-weight: 600; margin-bottom: 0.2rem; }
.error-card .err-body { color: var(--c-fg); font-size: 0.92rem; opacity: 0.85; }
.error-card .err-meta {
  font-size: 0.75rem;
  color: var(--c-muted);
  font-family: var(--font-mono);
  margin-top: 0.5rem;
  opacity: 0.8;
}

/* Input row */
.input-wrap {
  padding: 0.85rem 1.5rem 1.1rem;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border-soft);
}
.input-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 0.4rem 0.4rem 0.4rem 0.9rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.input-row:focus-within {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(var(--c-primary-rgb), 0.13);
}
.input-row textarea {
  flex: 1;
  padding: 0.55rem 0;
  border: 0;
  outline: 0;
  font-size: 0.95rem;
  font-family: inherit;
  resize: none;
  max-height: 160px;
  min-height: 22px;
  line-height: 1.45;
  background: transparent;
  color: var(--c-input-fg);
}
.input-row textarea:focus { box-shadow: none; }

.send-btn {
  width: 36px; height: 36px;
  border-radius: var(--r-md);
  background: var(--grad-primary);
  color: white;
  border: 0;
  cursor: pointer;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.send-btn:hover:not(:disabled) {
  box-shadow: 0 4px 12px rgba(var(--c-primary-rgb), 0.40);
}
.send-btn:active:not(:disabled) { transform: scale(0.95); }
.send-btn:disabled {
  background: var(--c-border);
  cursor: not-allowed;
  box-shadow: none;
  opacity: 0.6;
}
.send-btn svg { width: 16px; height: 16px; }

.input-hint {
  font-size: 0.75rem;
  color: var(--c-subtle);
  text-align: center;
  margin-top: 0.5rem;
}

/* Feedback row */
.feedback-row {
  display: flex;
  gap: 0.3rem;
  padding-left: 38px;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.bot-wrap:hover .feedback-row,
.feedback-row.given { opacity: 1; }
.fb-btn {
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  padding: 0.2rem 0.6rem;
  font-size: 0.85rem;
  cursor: pointer;
  line-height: 1.2;
  color: var(--c-muted);
  transition: border-color var(--t-fast), color var(--t-fast),
              background-color var(--t-fast);
  font-family: inherit;
}
.fb-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-primary-soft);
}
.fb-btn.active-up         { background: var(--c-ok-bg);   border-color: var(--c-ok);   color: var(--c-ok); }
.fb-btn.active-down       { background: var(--c-err-bg);  border-color: var(--c-err);  color: var(--c-err); }
.fb-btn.active-correction { background: var(--c-warn-bg); border-color: var(--c-warn); color: var(--c-warn); }
.fb-btn:disabled { cursor: default; opacity: 0.7; }

/* Subscription warning banner */
.sub-warn-banner {
  background: var(--c-warn-bg);
  border-bottom: 1px solid var(--c-warn);
  color: var(--c-warn);
  padding: 0.6rem 1.5rem;
  font-size: 0.88rem;
  text-align: center;
}

/* ── Result cards (shown below tool-group on important successes) ── */
.result-card {
  margin-left: 38px;
  max-width: calc(100% - 38px);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.95rem;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border-soft);
  border-left: 3px solid var(--c-ok);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  animation: fadeInUp var(--t-base) var(--ease-out);
  margin-top: -0.5rem;
}
.result-card.info  { border-left-color: var(--c-info); }
.result-card.warn  { border-left-color: var(--c-warn); }
.result-card.brand { border-left-color: var(--c-primary); }

.result-card .rc-icon {
  width: 36px; height: 36px;
  border-radius: var(--r-md);
  background: var(--c-ok-bg);
  color: var(--c-ok);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.result-card.info  .rc-icon { background: var(--c-info-bg); color: var(--c-info); }
.result-card.warn  .rc-icon { background: var(--c-warn-bg); color: var(--c-warn); }
.result-card.brand .rc-icon { background: var(--c-primary-soft); color: var(--c-primary); }

.result-card .rc-body {
  flex: 1;
  min-width: 0;
}
.result-card .rc-title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--c-fg);
  margin-bottom: 1px;
  display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap;
}
.result-card .rc-meta {
  font-size: 0.82rem;
  color: var(--c-muted);
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
}
.result-card .rc-meta .sep { color: var(--c-subtle); }
.result-card .rc-meta strong { color: var(--c-fg); font-weight: 600; }
.result-card .rc-meta a {
  color: var(--c-primary);
  font-weight: 500;
  text-decoration: none;
}
.result-card .rc-meta a:hover { text-decoration: underline; }
.result-card .rc-amount {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-fg);
  flex-shrink: 0;
  font-feature-settings: 'tnum';
}
.result-card .rc-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.45rem;
  border-radius: var(--r-pill);
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  letter-spacing: 0.02em;
}

/* Tool header — meta (richer line under the friendly title) */
.tool-header .label .meta strong {
  color: var(--c-fg);
  font-weight: 600;
}
.tool-header .label .meta .sep { color: var(--c-subtle); }

/* ── Drag-and-drop overlay ── */
.drop-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(var(--c-primary-rgb), 0.08);
  border: 2px dashed var(--c-primary);
  border-radius: var(--r-lg);
  pointer-events: none;
  z-index: 10;
  margin: 0.75rem;
  animation: fadeIn var(--t-fast) var(--ease-out);
}
.drop-overlay.active { display: flex; }
.drop-overlay .drop-card {
  background: var(--c-bg-elevated);
  padding: 1.25rem 1.5rem;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  max-width: 380px;
}
.drop-overlay .drop-icon {
  font-size: 2rem;
  margin-bottom: 0.4rem;
}
.drop-overlay h4 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  color: var(--c-fg);
}
.drop-overlay p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--c-muted);
  line-height: 1.45;
}

/* Pulsing primary glow on send button when input has text (subtle) */
.send-btn.has-text {
  box-shadow: 0 4px 14px rgba(var(--c-primary-rgb), 0.32);
}

/* ─────────────── 6. Login Overlay ─────────────── */

.login-overlay {
  position: fixed; inset: 0;
  background: linear-gradient(135deg,
              rgba(var(--c-primary-rgb), 0.18),
              rgba(var(--c-primary-rgb), 0.10));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn var(--t-slow) var(--ease-out);
}
.login-card {
  background: var(--c-bg-elevated);
  padding: 2rem;
  border-radius: var(--r-xl);
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--shadow-lg);
  width: 380px;
  animation: scaleIn var(--t-base) var(--ease-out);
}
.login-card .logo {
  width: 48px; height: 48px;
  border-radius: var(--r-lg);
  background: var(--grad-primary);
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.3rem;
  margin: 0 auto 1rem;
  box-shadow: var(--shadow-glow-primary);
}
.login-card h2 { margin: 0 0 0.3rem; text-align: center; }
.login-card .sub {
  color: var(--c-muted);
  text-align: center;
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}
.login-card label {
  margin-bottom: 0.35rem;
  font-weight: 500;
  font-size: 0.85rem;
}
.login-card input { margin-bottom: 1rem; }
.login-card button {
  width: 100%;
  padding: 0.75rem;
  background: var(--grad-primary);
  color: white;
  border: 0;
  border-radius: var(--r-md);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  box-shadow: var(--shadow-glow-primary);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.login-card button:hover { transform: translateY(-1px); }
.login-card .err {
  color: var(--c-err);
  font-size: 0.85rem;
  margin-top: 0.5rem;
  text-align: center;
}

/* ─────────────── 7. Onboarding ─────────────── */

body.onboarding { padding: 2rem; height: auto; overflow: auto; }

.onboarding-container {
  max-width: 640px;
  margin: 0 auto;
  background: var(--c-bg-elevated);
  padding: 2rem;
  border-radius: var(--r-xl);
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--shadow-md);
  animation: fadeInUp var(--t-slow) var(--ease-out);
}
.onboarding-container h1 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.onboarding-container .step-indicator {
  color: var(--c-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.progress {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.progress div {
  flex: 1;
  height: 6px;
  background: var(--c-border-soft);
  border-radius: var(--r-pill);
  transition: background-color var(--t-base);
}
.progress div.active { background: var(--c-primary); }
.progress div.done { background: var(--c-ok); }

.button-row {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.hint {
  color: var(--c-muted);
  font-size: 0.85rem;
  margin-bottom: 0.6rem;
  line-height: 1.55;
}
.hint a { color: var(--c-primary); font-weight: 500; }

.info-box {
  background: var(--c-info-bg);
  border: 1px solid rgba(var(--c-primary-rgb), 0.2);
  padding: 1rem;
  border-radius: var(--r-md);
  margin-bottom: 1rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--c-fg);
}
.info-box ul { margin: 0.5rem 0 0.25rem 1.2rem; padding: 0; }
.info-box details { margin-top: 0.75rem; cursor: pointer; }
.info-box summary { font-weight: 600; }
.info-box .details-body {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--c-muted);
}
.info-box .tip { color: var(--c-err); font-style: italic; }

.folder-row {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  margin-bottom: 0.85rem;
  background: var(--c-bg-subtle);
  min-height: 48px;
  transition: border-color var(--t-fast), background-color var(--t-fast);
}
.folder-row.empty {
  background: var(--c-bg-elevated);
  border-style: dashed;
}
.folder-row .name {
  flex: 1;
  font-size: 0.92rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.folder-row .name.placeholder { color: var(--c-subtle); }
.folder-row .icon { font-size: 1.1rem; }
.folder-row button {
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: var(--r-sm);
  font-family: inherit;
  cursor: pointer;
  transition: background-color var(--t-fast), border-color var(--t-fast);
}
.folder-row button.pick {
  background: var(--c-bg-elevated);
  color: var(--c-primary);
  border: 1px solid var(--c-primary);
}
.folder-row button.pick:hover { background: var(--c-primary-soft); }
.folder-row button.change {
  background: var(--c-bg-elevated);
  color: var(--c-muted);
  border: 1px solid var(--c-border);
}
.folder-row button.change:hover { background: var(--c-bg-hover); }

.err {
  color: var(--c-err);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}
.ok { color: var(--c-ok); }

/* ─────────────── 8. Admin ─────────────── */

body.admin {
  height: auto;
  overflow: auto;
  display: block;
}

main.admin-main {
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.toolbar h2 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}
.stats {
  color: var(--c-muted);
  font-size: 0.88rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}
thead {
  background: var(--c-bg-subtle);
  border-bottom: 1px solid var(--c-border-soft);
}
th {
  text-align: left;
  padding: 0.7rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-subtle);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
td {
  padding: 0.85rem 0.9rem;
  border-top: 1px solid var(--c-border-soft);
  font-size: 0.9rem;
  vertical-align: middle;
  color: var(--c-fg);
}
tbody tr {
  transition: background-color var(--t-fast);
}
tbody tr:hover { background: var(--c-bg-subtle); }

.name { font-weight: 600; }
.name small {
  display: block;
  color: var(--c-subtle);
  font-weight: 400;
  font-size: 0.76rem;
  margin-top: 1px;
}

.empty {
  padding: 3rem;
  text-align: center;
  color: var(--c-muted);
}
.empty .ico {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  display: block;
}

.gate {
  max-width: 380px;
  margin: 4rem auto;
  padding: 2rem;
  background: var(--c-bg-elevated);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-md);
}
.gate h2 { margin: 0 0 0.4rem; }
.gate p {
  color: var(--c-muted);
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
}
.gate input { margin-bottom: 1rem; }
.gate button { width: 100%; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem 1rem;
}
.form-grid .full { grid-column: span 2; }

/* ─────────────── 9. Animations ─────────────── */

@keyframes spin     { to { transform: rotate(360deg); } }
@keyframes typing {
  0%, 60%, 100% { transform: translateY(0);    opacity: 0.5; }
  30%           { transform: translateY(-4px); opacity: 1; }
}
@keyframes fadeIn   { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(20px); }
}

/* ─────────────── 10. Mobile ─────────────── */

@media (max-width: 720px) {
  aside.app-sidebar { display: none; }
  .messages { padding: 1rem; }
  .input-wrap { padding: 0.75rem 1rem 1rem; }
  .welcome .suggestions { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: span 1; }
  body.onboarding { padding: 1rem; }
  .onboarding-container { padding: 1.25rem; }
  main.admin-main { padding: 1rem; }
  .toast-stack { left: 1rem; right: 1rem; bottom: 1rem; }
  .toast { max-width: none; }
}

/* ─── Admin tabs ─── */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}
.tab-btn {
  background: transparent;
  border: none;
  padding: 0.6rem 1rem;
  font: inherit;
  color: var(--c-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn:hover {
  color: var(--c-fg);
}
.tab-btn.active {
  color: var(--c-primary);
  border-bottom-color: var(--c-primary);
  font-weight: 600;
}
.tab-pane {
  display: none;
}
.tab-pane.active {
  display: block;
}