/* ==========================================================================
   CORE
   ========================================================================== */

/* CSS Variables (Design Tokens)
   ===================================== */
:root {
  /* Backgrounds */
  --bg-main: #0e151d;
  --bg-secondary: #16202c;

  /* Texts */
  --text-main: #e2e8f0;
  --text-muted: #64748b;
  --text-faint: #1e2b3c;

  /* Accents & Borders */
  --accent-primary: #38bdf8;
  --border-line: #1e2b3c;

  /* Status / Console returns */
  --terminal-success: #10b981;
  --terminal-warning: #f59e0b;
  --terminal-error: #ef4444;

  /* Interactions */
  --row-hover: rgba(56, 189, 248, 0.05);
  --transition-interactive: 0.2s ease;

  /* Typography scale */
  /* Fallbacks (pour les navigateurs pré-2020) */
  --text-xs: 0.75rem;
  --text-sm: 0.85rem;
  --text-base: 0.9rem;
  --text-lg: 1.05rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-hero: 1.8rem;

  /* Dynamic scale (Clamp) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8rem);     /* ~12px -> 13px */
  --text-sm: clamp(0.85rem, 0.8rem + 0.25vw, 0.9rem);     /* ~13px -> 14px */
  --text-base: clamp(0.9rem, 0.85rem + 0.25vw, 0.95rem);  /* ~14px -> 15px */
  --text-lg: clamp(1.05rem, 1rem + 0.35vw, 1.2rem);       /* ~17px -> 19px */
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.45rem);    /* ~20px -> 23px */
  --text-2xl: clamp(1.5rem, 1.3rem + 0.75vw, 1.8rem);     /* ~24px -> 29px */
  --text-hero: clamp(1.8rem, 1.5rem + 1vw, 2.4rem);       /* ~29px -> 38px */
}

/* Typography & Fonts
   ===================================== */
@font-face {
  font-family: "FiraCode";
  src: url('../fonts/FiraCode-VF.woff2') format('woff2-variations'),
       url('../fonts/FiraCode-VF.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

/* Base Elements (HTML Tags)
   ===================================== */
body {
  padding: 0;
  margin: 0; /* Ajout recommandé pour body */
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: "FiraCode", monospace;
  font-variant-ligatures: none;
  font-size: var(--text-base);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 0; /* Reset global utile */
}

h1 {
  font-size: var(--text-2xl);
  line-height: 1.2;
  margin-bottom: 1rem;
}

h2 {
  font-size: var(--text-xl);
  line-height: 1.3;
  margin-bottom: 0.8rem;
}

h3 {
  font-size: var(--text-lg);
  line-height: 1.4;
  margin-bottom: 0.6rem;
}

h4, h5, h6 {
  font-size: var(--text-base);
  font-weight: bold;
}

a {
  color: var(--text-main);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

::selection {
  background-color: var(--accent-primary);
  color: var(--bg-main);
}

/* ==========================================================================
   TUI SYSTEM (Components)
   ========================================================================== */

/* Boxes & Containers
   ===================================== */
.tui-box {
  background-color: var(--bg-main);
  border: 1px solid var(--border-line);
}

.tui-title {
  margin: 0;
  padding: 0.2rem 0.9rem;
  background-color: var(--border-line);
  color: var(--text-main);
  font-size: var(--text-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.7rem;
}

.tui-title__text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tui-title__perms {
  display: none;
  margin-left: auto;
}

@media (min-width: 1024px) {
  .tui-title__perms {
    display: inline;
  }
}

/* List Rows
   ===================================== */
.tui-row {
  border-bottom: 1px solid var(--border-line);
  transition: background-color var(--transition-interactive);
}

.tui-row:hover {
  background-color: var(--row-hover);
}

.tui-row:last-child {
  border-bottom: none;
}

/* Back to Top Button
   ===================================== */
#tui-back-to-top {
  position: fixed;
  z-index: 1000;
  width: 2.5rem;
  height: 2.5rem;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  
  border: 1px solid var(--border-line);
  background-color: var(--bg-secondary);
  color: var(--accent-primary);
  
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-interactive),
              background-color var(--transition-interactive),
              border-color var(--transition-interactive),
              color var(--transition-interactive);
}

#tui-back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

#tui-back-to-top .icon-svg {
  width: 1.8rem;
  height: 1.8rem;
  margin-bottom: 0;
  color: inherit; 
}

#tui-back-to-top:hover { 
  border-color: var(--accent-primary);
}

#tui-back-to-top:focus-visible {
  outline: 2px solid var(--terminal-warning);
  outline-offset: 2px;
  background-color: var(--accent-primary);
  color: var(--bg-main);
}

@media (min-width: 768px) {
  #tui-back-to-top {
    left: auto;
    bottom: 8rem;
    transform: none;
    right: max(2.5rem, calc(50vw - 700px + 1rem));
  }
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

/* Icons
   ===================================== */
.icon-svg {
  width: 1em;
  height: 1em;
  display: inline-block;
  flex-shrink: 0;
  vertical-align: middle;
  margin-bottom: 0.15em;
}

/* Accessibility
   ===================================== */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  padding: 0.5rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}