/* ── VARIABLES ── */
:root {
  --bg:      #F1F5F9;
  --bg2:     #FFFFFF;
  --card:    #FFFFFF;
  --card2:   #F8FAFC;
  --border:  #E2E8F0;
  --primary: #00B896;
  --primary-dim: #00B89615;
  --accent:  #F97316;
  --accent-dim: #F9731615;
  --info:    #3B82F6;
  --info-dim:#3B82F615;
  --danger:  #EF4444;
  --danger-dim:#EF444415;
  --success: #10B981;
  --success-dim:#10B98115;
  --text:    #1E293B;
  --text2:   #64748B;
  --sidebar-w: 240px;
  --radius:  14px;
  --radius-sm: 8px;
  --shadow:  0 2px 16px #0000000D;
  --shadow-md: 0 4px 24px #00000014;
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
.hidden { display: none !important; }

/* ══════════════════════════════════════════
   SPLASH — dark stays, animation is key
══════════════════════════════════════════ */
#splash {
  position: fixed; inset: 0; z-index: 9999;
  background: #0A0E1A;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
#particleCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.splash-content {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.splash-logo {
  font-size: 14px; letter-spacing: 8px; text-transform: uppercase;
  color: #8892A4; opacity: 0; animation: fadeUp .6s .2s forwards;
}
.logo-s { color: #00D4AA; font-weight: 700; font-size: 18px; }
.splash-name { display: flex; gap: 4px; }
.letter {
  font-size: clamp(60px, 12vw, 100px);
  font-weight: 900; letter-spacing: 4px;
  color: transparent; -webkit-text-stroke: 2px #00D4AA;
  opacity: 0; display: inline-block;
  animation: letterIn .5s forwards;
  text-shadow: 0 0 40px #00D4AA, 0 0 80px #00D4AA44;
}
.letter[data-i="0"] { animation-delay: .5s; }
.letter[data-i="1"] { animation-delay: .7s; }
.letter[data-i="2"] { animation-delay: .9s; }
.letter[data-i="3"] { animation-delay: 1.1s; }
.splash-sub {
  font-size: 13px; letter-spacing: 4px; text-transform: uppercase;
  color: #8892A4; opacity: 0; animation: fadeUp .6s 1.4s forwards;
}
.splash-bar {
  width: 200px; height: 2px; background: #1E2D45;
  border-radius: 2px; overflow: hidden; margin-top: 24px;
  opacity: 0; animation: fadeUp .4s 1.6s forwards;
}
.splash-progress {
  height: 100%; width: 0;
  background: linear-gradient(90deg, #00D4AA, #FF6B35);
  border-radius: 2px; animation: loadBar 1.2s 1.8s forwards ease-out;
}
@keyframes letterIn {
  0%   { opacity: 0; transform: translateY(30px) scale(.8); }
  60%  { opacity: 1; -webkit-text-stroke-color: #00D4AA; }
  100% { opacity: 1; transform: translateY(0) scale(1); color: #00D4AA; -webkit-text-stroke-color: transparent; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes loadBar { to { width: 100%; } }
@keyframes splashOut { to { opacity: 0; transform: scale(1.05); pointer-events: none; } }
#splash.exiting { animation: splashOut .5s forwards; }

/* ══════════════════════════════════════════
   APP LAYOUT
══════════════════════════════════════════ */
#app { display: flex; height: 100vh; overflow: hidden; }

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 24px 0;
  transition: transform var(--transition);
  z-index: 100;
  box-shadow: 2px 0 8px #0000000A;
}
.sidebar-brand {
  padding: 0 24px 24px;
  font-size: 20px; font-weight: 800; letter-spacing: 2px;
  text-transform: uppercase; color: var(--text);
  border-bottom: 1px solid var(--border);
}
.brand-s { color: var(--primary); font-size: 26px; }
.brand-sub { font-size: 10px; letter-spacing: 3px; color: var(--text2); font-weight: 400; margin-top: 2px; }

.nav-links { list-style: none; padding: 16px 12px; flex: 1; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; color: var(--text2);
  cursor: pointer; transition: all var(--transition); user-select: none;
}
.nav-item svg { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--primary-dim); color: var(--primary); font-weight: 600; }

.sidebar-footer { padding: 16px 12px 0; border-top: 1px solid var(--border); }
.import-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; color: var(--text2);
  cursor: pointer; transition: all var(--transition);
  background: none; border: none; width: 100%;
}
.import-btn svg { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }
.import-btn:hover { background: var(--bg); color: var(--accent); }

/* ── MAIN ── */
.main-content { flex: 1; overflow-y: auto; overflow-x: hidden; display: flex; flex-direction: column; }

/* ── TOPBAR ── */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 24px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50; flex-shrink: 0;
  box-shadow: 0 1px 4px #0000000A;
}
.menu-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; padding: 4px; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--text2); border-radius: 2px; }
.topbar-title { font-size: 15px; font-weight: 700; flex: 1; color: var(--text); }
.topbar-meta { display: flex; align-items: center; gap: 12px; }
.week-badge {
  font-size: 11px; font-weight: 600; padding: 4px 12px;
  background: var(--primary-dim); color: var(--primary);
  border-radius: 20px; letter-spacing: .5px;
}
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 15px; color: #fff;
}

/* ── PAGES ── */
.page { display: none; padding: 24px 28px 48px; animation: pageIn .25s ease; }
.page.active { display: block; }
@keyframes pageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.page-intro { margin-bottom: 24px; }
.page-intro h1 { font-size: clamp(20px, 3vw, 28px); font-weight: 800; margin-bottom: 4px; color: var(--text); }
.page-intro p { color: var(--text2); font-size: 13px; }
.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ── GLOBAL STATS ── */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px; margin-bottom: 28px;
}
.stat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px;
  display: flex; flex-direction: column; gap: 8px;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative; overflow: hidden;
  box-shadow: var(--shadow);
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-card.primary::before { background: linear-gradient(90deg, var(--info), var(--primary)); }
.stat-card.success::before { background: linear-gradient(90deg, var(--success), var(--primary)); }
.stat-card.danger::before  { background: linear-gradient(90deg, var(--danger), var(--accent)); }
.stat-card.info::before    { background: linear-gradient(90deg, var(--accent), var(--danger)); }

.stat-icon { font-size: 20px; }
.stat-val { font-size: 26px; font-weight: 800; line-height: 1; }
.stat-card.primary .stat-val { color: var(--info); }
.stat-card.success .stat-val { color: var(--success); }
.stat-card.danger  .stat-val { color: var(--danger); }
.stat-card.info    .stat-val { color: var(--accent); }
.stat-label { font-size: 11px; color: var(--text2); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }

/* ── SUPERVISOR CARDS ── */
.section-title { font-size: 13px; font-weight: 700; margin-bottom: 14px; color: var(--text2); text-transform: uppercase; letter-spacing: 1px; }
.supervisor-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px; margin-bottom: 28px;
}
.sup-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow);
}
.sup-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.sup-card-header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.sup-avatar {
  width: 42px; height: 42px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 17px; color: #fff; flex-shrink: 0;
}
.sup-name { font-size: 15px; font-weight: 700; color: var(--text); }
.sup-sub  { font-size: 12px; color: var(--text2); margin-top: 2px; }

.sup-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sup-metric { background: var(--card2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; }
.sup-metric-val { font-size: 19px; font-weight: 800; }
.sup-metric-label { font-size: 11px; color: var(--text2); margin-top: 2px; text-transform: uppercase; letter-spacing: .5px; }

.progress-bar-wrap { margin-top: 14px; }
.progress-label { display: flex; justify-content: space-between; font-size: 12px; color: var(--text2); margin-bottom: 5px; }
.progress-bar { height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 3px; transition: width .8s cubic-bezier(.4,0,.2,1); }

/* ── CHARTS ── */
.charts-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.chart-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow);
}
.chart-card.wide { grid-column: 1 / -1; }
.chart-card h3 { font-size: 12px; font-weight: 700; margin-bottom: 16px; color: var(--text2); text-transform: uppercase; letter-spacing: .5px; }

/* ── TABS ── */
.tabs {
  display: flex; gap: 4px; margin-bottom: 18px;
  border-bottom: 2px solid var(--border); padding-bottom: 0; overflow-x: auto;
}
.tab-btn {
  padding: 9px 20px; background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--text2); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all var(--transition); white-space: nowrap;
  margin-bottom: -2px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ── SAISIE FORM ── */
.supervisor-form { display: none; }
.supervisor-form.active { display: block; }

.form-section {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; margin-bottom: 14px;
  box-shadow: var(--shadow);
}
.form-section-title {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: var(--primary); margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.form-section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

.synthese-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
  gap: 10px;
}
.field-group { display: flex; flex-direction: column; gap: 5px; }
.field-group label { font-size: 10px; color: var(--text2); font-weight: 700; text-transform: uppercase; letter-spacing: .5px; }
.field-group input {
  background: var(--bg); border: 1.5px solid var(--border);
  color: var(--text); border-radius: var(--radius-sm);
  padding: 9px 11px; font-size: 14px; font-weight: 600;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.field-group input:not([readonly]):hover { border-color: #CBD5E1; }
.field-group input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-dim); }
.field-group input[readonly] {
  background: var(--primary-dim); color: var(--primary);
  border-color: #00B89630; cursor: default; font-weight: 700;
}
.field-group input.danger-val { background: var(--danger-dim); color: var(--danger); border-color: #EF444430; }

/* Save row */
.synth-save-row {
  margin-top: 14px; display: flex; align-items: center; gap: 12px;
  padding-top: 14px; border-top: 1px solid var(--border);
}
.btn-save {
  display: flex; align-items: center; gap: 7px;
  background: var(--primary); color: #fff; border: none;
  border-radius: var(--radius-sm); padding: 9px 20px;
  font-size: 13px; font-weight: 700; transition: all var(--transition);
  box-shadow: 0 2px 8px #00B89630;
}
.btn-save:hover { background: #00a085; transform: translateY(-1px); box-shadow: 0 4px 14px #00B89640; }
.btn-save:active { transform: translateY(0); }
.save-hint { font-size: 11px; color: var(--text2); }

/* PREVENDEUR TABLE */
.prev-table-wrap { overflow-x: auto; }
.prev-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.prev-table th {
  background: var(--card2); padding: 9px 12px;
  text-align: left; font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px; color: var(--text2);
  border-bottom: 2px solid var(--border); white-space: nowrap;
}
.prev-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.prev-table tr:last-child td { border-bottom: none; }
.prev-table tr:hover td { background: #F8FAFC; }
.prev-table input {
  background: #F8FAFC; border: 1.5px solid var(--border);
  color: var(--text); padding: 5px 8px; border-radius: 6px;
  font-size: 13px; width: 80px; font-weight: 600;
  transition: all var(--transition);
}
.prev-table input:focus { outline: none; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px var(--primary-dim); }
.prev-table .pct-cell { color: var(--success); font-weight: 700; font-size: 13px; }
.prev-table .pct-cell.bad { color: var(--danger); }
.total-row td { font-weight: 800; color: var(--primary); background: var(--primary-dim) !important; border-top: 2px solid #00B89630; }

/* ── FLASH HIGHLIGHT ── */
@keyframes flashHighlight {
  0%   { box-shadow: 0 0 0 3px var(--primary); background: var(--primary-dim); }
  100% { box-shadow: none; }
}
.flash-update { animation: flashHighlight .7s ease !important; }

@keyframes flashRow {
  0%   { background: var(--primary-dim) !important; }
  100% { background: transparent !important; }
}
.flash-row td { animation: flashRow .7s ease !important; }

/* ── RANKING TABLE ── */
.ranking-table-wrap { overflow-x: auto; }
.ranking-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ranking-table th {
  background: var(--card2); padding: 11px 14px;
  text-align: left; font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px; color: var(--text2);
  border-bottom: 2px solid var(--border); white-space: nowrap; position: sticky; top: 0;
}
.ranking-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); color: var(--text); }
.ranking-table tr:hover td { background: var(--card2); }
.rank-badge {
  width: 26px; height: 26px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 12px;
}
.rank-1 { background: #FFD70018; color: #B8860B; }
.rank-2 { background: #C0C0C018; color: #6B7280; }
.rank-3 { background: #CD7F3218; color: #B45309; }
.rank-n { background: var(--card2); color: var(--text2); }
.pct-bar { display: flex; align-items: center; gap: 10px; }
.pct-bar-inner { flex: 1; max-width: 90px; height: 4px; background: var(--border); border-radius: 3px; overflow: hidden; }
.pct-bar-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 3px; }
.sup-tag {
  font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: .5px;
}

/* ── EXPORT ── */
.export-zone { display: flex; flex-direction: column; align-items: center; gap: 24px; padding: 40px 0; }
.export-preview {
  background: var(--card); border: 2px dashed var(--border);
  border-radius: var(--radius); padding: 40px 60px;
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 10px;
  box-shadow: var(--shadow);
}
.export-icon { font-size: 48px; }
.export-filename { font-size: 15px; font-weight: 700; color: var(--text); }
.export-meta { font-size: 12px; color: var(--text2); }
.btn-export {
  display: flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; border: none; border-radius: var(--radius-sm);
  padding: 12px 30px; font-size: 15px; font-weight: 700;
  transition: all var(--transition); box-shadow: 0 4px 16px #00B89630;
}
.btn-export svg { width: 18px; height: 18px; fill: #fff; }
.btn-export:hover { transform: translateY(-2px); box-shadow: 0 6px 24px #00B89640; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px #00000020; }
  .menu-toggle { display: flex; }
  .charts-row { grid-template-columns: 1fr; }
  .page { padding: 16px 14px 48px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .supervisor-grid { grid-template-columns: 1fr; }
  .topbar { padding: 12px 14px; }
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #CBD5E1; }

/* ── TOAST ── */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 18px;
  font-size: 13px; font-weight: 500; color: var(--text);
  box-shadow: var(--shadow-md); animation: toastIn .3s ease; max-width: 300px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── EMPTY STATE ── */
.empty-state {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 48px; color: var(--text2); text-align: center;
}
.empty-state-icon { font-size: 44px; opacity: .3; }