/* ============================================================
   Le Guide de Survie du Trader IA — Webapp CSS
   Charte graphique conforme guide_style_cowork.md
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,300..800;1,6..72,300..800&family=Manrope:wght@300..800&family=JetBrains+Mono:wght@300;400;700&display=swap');

:root {
  --primary: #2D5A43;
  --primary-light: #A1D1B4;
  --surface: #FFFFFF;
  --surface-low: #F7F7F7;
  --surface-dark: #0e0e0e;
  --on-surface: #191C1A;
  --on-surface-variant: #5a5f5b;
  --outline: #C2C8C1;
  --outline-dark: #6b716b;
  --error: #BA1A1A;
  --tertiary: #603a3c;

  --llm-claude: #2D5A43;
  --llm-gemini: #1A73E8;
  --llm-gpt: #E8590A;

  --font-title: 'Newsreader', Georgia, serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --sidebar-width: 240px;
  --header-height: 60px;
}

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

.hidden { display: none !important; }

html { font-size: 15px; }

body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  min-height: 100vh;
}

/* ============================================================
   UNLOCK SCREEN
   ============================================================ */
#unlock-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--surface-dark);
  color: var(--surface);
  padding: 2rem;
  text-align: center;
}

#unlock-screen.hidden { display: none; }

.unlock-logo {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--primary-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0.7;
}

.unlock-title {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.4rem;
  color: var(--surface);
}

.unlock-subtitle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--primary-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
  opacity: 0.8;
}

.unlock-vol0-note {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--outline-dark);
  margin-bottom: 2rem;
  max-width: 400px;
}

.unlock-vol0-note a {
  color: var(--primary-light);
  text-decoration: none;
}

.unlock-vol0-note a:hover { text-decoration: underline; }

.unlock-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  max-width: 400px;
  margin-bottom: 1.5rem;
}

.unlock-input {
  background: #1a1a1a;
  border: 1px solid var(--outline-dark);
  border-radius: 4px;
  color: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.unlock-input::placeholder { color: var(--outline-dark); }
.unlock-input:focus { border-color: var(--primary-light); }

.unlock-btn {
  background: var(--primary);
  border: none;
  border-radius: 4px;
  color: var(--surface);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  transition: background 0.2s, transform 0.1s;
}

.unlock-btn:hover { background: #3a7356; }
.unlock-btn:active { transform: scale(0.99); }
.unlock-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.unlock-msg {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  min-height: 1.2em;
  letter-spacing: 0.03em;
}

.unlock-msg.error { color: #ff6b6b; }
.unlock-msg.success { color: var(--primary-light); }
.unlock-msg.loading { color: var(--outline-dark); animation: blink 1s infinite; }

@keyframes blink { 50% { opacity: 0.4; } }

.unlock-buy-link {
  font-size: 0.82rem;
  color: var(--outline-dark);
  margin-top: 1rem;
}

.unlock-buy-link a {
  color: var(--primary-light);
  text-decoration: none;
}

.unlock-buy-link a:hover { text-decoration: underline; }

/* ============================================================
   MAIN APP LAYOUT
   ============================================================ */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#app.hidden { display: none; }

/* HEADER */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--surface-dark);
  border-bottom: 1px solid #222;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.25rem;
  z-index: 100;
}

.header-brand {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--surface);
  white-space: nowrap;
  flex-shrink: 0;
}

.header-brand span {
  color: var(--primary-light);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  justify-content: flex-end;
}

/* Language Picker (first launch) */
#lang-picker {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--surface-dark);
}

.lang-picker-box {
  text-align: center;
  padding: 3rem 2rem;
}

.lang-picker-title {
  font-family: var(--font-title);
  font-size: 2rem;
  font-weight: 300;
  color: var(--surface);
  margin-bottom: 0.5rem;
}

.lang-picker-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--outline-dark);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.lang-picker-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.lang-picker-btn {
  background: transparent;
  border: 1px solid var(--outline-dark);
  border-radius: 3px;
  color: var(--surface);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.8rem 2.5rem;
  text-transform: uppercase;
  transition: all 0.2s;
}

.lang-picker-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(45,90,67,0.15);
}

/* Language Switch (header) */
.lang-switch {
  display: flex;
  gap: 0.2rem;
  flex-shrink: 0;
  margin-right: 0.5rem;
}

.lang-btn {
  background: transparent;
  border: 1px solid var(--outline-dark);
  border-radius: 3px;
  color: var(--outline-dark);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.45rem;
  text-transform: uppercase;
  transition: all 0.15s;
}

.lang-btn:hover { border-color: var(--outline); color: var(--outline); }

.lang-btn.active {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(45,90,67,0.2);
}

/* LLM Filter */
.llm-filter {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
}

.llm-btn {
  background: transparent;
  border: 1px solid var(--outline-dark);
  border-radius: 3px;
  color: var(--outline-dark);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.6rem;
  text-transform: uppercase;
  transition: all 0.15s;
}

.llm-btn:hover { border-color: var(--outline); color: var(--outline); }

.llm-btn.active[data-llm="tous"] { border-color: var(--surface); color: var(--surface); }
.llm-btn.active[data-llm="claude"] { border-color: var(--llm-claude); color: var(--llm-claude); background: rgba(45,90,67,0.15); }
.llm-btn.active[data-llm="gemini"] { border-color: var(--llm-gemini); color: var(--llm-gemini); background: rgba(26,115,232,0.12); }
.llm-btn.active[data-llm="gpt"] { border-color: var(--llm-gpt); color: var(--llm-gpt); background: rgba(232,89,10,0.12); }

/* Search */
.search-bar {
  position: relative;
  flex-shrink: 1;
}

.search-input {
  background: #1a1a1a;
  border: 1px solid var(--outline-dark);
  border-radius: 4px;
  color: var(--surface);
  font-family: var(--font-body);
  font-size: 0.82rem;
  outline: none;
  padding: 0.35rem 0.75rem;
  width: 200px;
  transition: border-color 0.2s, width 0.2s;
}

.search-input::placeholder { color: var(--outline-dark); }
.search-input:focus { border-color: var(--primary-light); width: 260px; }

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--surface);
  cursor: pointer;
  font-size: 1.3rem;
  padding: 0.3rem;
  flex-shrink: 0;
}

/* SIDEBAR */
#sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--surface-dark);
  border-right: 1px solid #222;
  overflow-y: auto;
  z-index: 90;
  padding: 1rem 0;
  transition: transform 0.25s ease;
}

.sidebar-section-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--outline-dark);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.75rem 1.25rem 0.35rem;
}

.sidebar-nav-item {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.55rem 1.25rem;
  cursor: pointer;
  transition: background 0.15s;
  border-left: 2px solid transparent;
  user-select: none;
}

.sidebar-nav-item:hover { background: #141414; }

.sidebar-nav-item.active {
  background: #141414;
  border-left-color: var(--primary-light);
}

.sidebar-nav-item.locked { opacity: 0.4; cursor: default; }

.sidebar-vol-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--primary-light);
  flex-shrink: 0;
}

.sidebar-vol-title {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--surface);
  line-height: 1.3;
}

.sidebar-vol-count {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--outline-dark);
  margin-left: auto;
}

.sidebar-lock-icon {
  font-size: 0.65rem;
  color: var(--outline-dark);
  margin-left: auto;
}

/* MAIN CONTENT */
#main {
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: 2rem 1.75rem;
  min-height: calc(100vh - var(--header-height));
}

/* Volume header */
.vol-header {
  margin-bottom: 1.75rem;
}

.vol-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.vol-title {
  font-family: var(--font-title);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 0.25rem;
}

.vol-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--on-surface-variant);
}

/* No results */
.no-results {
  text-align: center;
  padding: 3rem;
  color: var(--on-surface-variant);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* ============================================================
   PROMPT CARDS
   ============================================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.25rem;
}

.prompt-card {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.prompt-card:hover {
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  border-color: var(--outline-dark);
}

.prompt-card.hidden { display: none; }

/* Card header */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem 0;
  gap: 0.5rem;
}

.card-id-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-id {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.level-badge {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
}

.level-badge.debutant { background: rgba(45,90,67,0.12); color: var(--primary); border: 1px solid rgba(45,90,67,0.3); }
.level-badge.intermediaire { background: rgba(232,89,10,0.1); color: #b04a00; border: 1px solid rgba(232,89,10,0.3); }
.level-badge.avance { background: rgba(186,26,26,0.1); color: var(--error); border: 1px solid rgba(186,26,26,0.3); }
.level-badge.tous { background: rgba(26,115,232,0.1); color: var(--llm-gemini); border: 1px solid rgba(26,115,232,0.3); }

.card-ref {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--outline-dark);
  flex-shrink: 0;
}

/* Card body */
.card-title {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--on-surface);
  padding: 0.4rem 1rem 0.2rem;
  line-height: 1.3;
}

.card-desc {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--on-surface-variant);
  padding: 0 1rem 0.6rem;
  line-height: 1.5;
}

/* Prompt code block */
.card-code {
  background: var(--surface-dark);
  padding: 0.85rem 1rem;
  flex: 1;
  position: relative;
}

.card-code code {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--primary-light);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.65;
  display: block;
}

/* LLM Variant */
.card-variant {
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.55;
  display: none;
  border-top: 1px solid #222;
}

.card-variant.visible { display: block; }

.card-variant[data-variant="gemini"] {
  background: rgba(26,115,232,0.06);
  color: #7ab4f5;
  border-left: 2px solid var(--llm-gemini);
}

.card-variant[data-variant="gpt"] {
  background: rgba(232,89,10,0.06);
  color: #f5a87a;
  border-left: 2px solid var(--llm-gpt);
}

.variant-label {
  font-weight: 700;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  display: block;
}

.card-variant[data-variant="gemini"] .variant-label { color: var(--llm-gemini); }
.card-variant[data-variant="gpt"] .variant-label { color: var(--llm-gpt); }

/* Usage note */
.card-note {
  font-family: var(--font-body);
  font-size: 0.76rem;
  color: var(--on-surface-variant);
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--outline);
  background: var(--surface-low);
  font-style: italic;
}

/* Card footer */
.card-footer {
  display: flex;
  justify-content: flex-end;
  padding: 0.5rem 0.75rem;
  border-top: 1px solid var(--outline);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--outline);
  border-radius: 3px;
  color: var(--on-surface-variant);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  text-transform: uppercase;
  transition: all 0.15s;
}

.copy-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.copy-btn.copied {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(45,90,67,0.08);
}

/* ============================================================
   LOCKED OVERLAY
   ============================================================ */
#locked-overlay {
  text-align: center;
  padding: 4rem 2rem;
  display: none;
}

#locked-overlay.visible { display: block; }

.locked-title {
  font-family: var(--font-title);
  font-size: 1.4rem;
  color: var(--on-surface);
  margin-bottom: 0.5rem;
}

.locked-msg {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--on-surface-variant);
  margin-bottom: 1.25rem;
}

.locked-unlock-btn {
  background: var(--primary);
  border: none;
  border-radius: 4px;
  color: white;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.65rem 1.5rem;
  transition: background 0.2s;
}

.locked-unlock-btn:hover { background: #3a7356; }

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  margin-left: var(--sidebar-width);
  border-top: 1px solid var(--outline);
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-quote {
  font-family: var(--font-title);
  font-style: italic;
  font-size: 0.82rem;
  color: var(--on-surface-variant);
}

.footer-dept {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--outline-dark);
  letter-spacing: 0.08em;
}

/* ============================================================
   MOBILE
   ============================================================ */
@media (max-width: 720px) {
  :root { --sidebar-width: 0px; }

  .hamburger { display: flex; }

  #sidebar {
    transform: translateX(-240px);
    width: 240px;
  }

  #sidebar.open { transform: translateX(0); }

  #main, #footer { margin-left: 0; }

  .header-brand { font-size: 0.85rem; }

  .search-input { width: 140px; }
  .search-input:focus { width: 160px; }

  .cards-grid { grid-template-columns: 1fr; }

  #header { padding: 0 0.85rem; gap: 0.6rem; }
}