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

:root{
  --bg:#f5f5f7;
  --bg2:#ffffff;
  --bg3:#f0f0f2;
  --bg-elevated:rgba(255,255,255,.72);
  --text:#1d1d1f;
  --text2:#6e6e73;
  --border:rgba(0,0,0,.08);
  --border-strong:rgba(0,0,0,.12);
  --primary:#0071e3;
  --primary-text:#ffffff;
  --done:#30d158;
  --high:#ff3b30;
  --medium:#ff9f0a;
  --low:#30d158;
  --shadow:0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --shadow-lg:0 4px 12px rgba(0,0,0,.08), 0 16px 40px rgba(0,0,0,.12);
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
}

body.dark{
  --bg:#000000;
  --bg2:#1c1c1e;
  --bg3:#2c2c2e;
  --bg-elevated:rgba(28,28,30,.72);
  --text:#f5f5f7;
  --text2:#98989d;
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.14);
  --primary:#0a84ff;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.4);
  --shadow-lg:0 4px 12px rgba(0,0,0,.4), 0 16px 40px rgba(0,0,0,.55);
}

@media (prefers-color-scheme: dark) {
  body:not(.light){
    --bg:#000000;
    --bg2:#1c1c1e;
    --bg3:#2c2c2e;
    --bg-elevated:rgba(28,28,30,.72);
    --text:#f5f5f7;
    --text2:#98989d;
    --border:rgba(255,255,255,.09);
    --border-strong:rgba(255,255,255,.14);
    --primary:#0a84ff;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.4);
    --shadow-lg:0 4px 12px rgba(0,0,0,.4), 0 16px 40px rgba(0,0,0,.55);
  }
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  padding:20px;
  -webkit-font-smoothing:antialiased;
  transition:background-color .25s ease,color .25s ease;
  letter-spacing:-.01em;
}

header{
  display:flex;align-items:center;gap:16px;margin-bottom:28px;flex-wrap:wrap;
  background:var(--bg-elevated);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:14px 20px;
  box-shadow:var(--shadow);
}
header h1{font-size:19px;font-weight:700;display:flex;align-items:center;gap:8px;letter-spacing:-.02em}

.nav-btn{
  background:var(--bg3);
  border:1px solid transparent;
  border-radius:999px;
  padding:9px 16px;
  cursor:pointer;
  font-size:13px;
  font-weight:600;
  color:var(--text);
  display:flex;align-items:center;gap:6px;
  transition:background-color .15s ease,transform .1s ease,color .15s ease;
  font-family:inherit;
  letter-spacing:-.01em;
  text-decoration:none;
}
.nav-btn:hover{background:var(--border-strong)}
.nav-btn:active{transform:scale(.96)}
.nav-btn.active{background:var(--primary);color:var(--primary-text)}
.nav-btn.icon-btn{padding:9px 11px}

.month-label{font-size:17px;font-weight:700;min-width:160px;text-align:center;letter-spacing:-.02em}
.today-btn{background:var(--primary);color:var(--primary-text);border:none;border-radius:999px;padding:9px 16px;cursor:pointer;font-size:13px;font-weight:600;font-family:inherit}
.today-btn:active{transform:scale(.96)}

.legend{display:flex;gap:14px;flex-wrap:wrap;margin-left:auto;align-items:center}
.leg-item{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--text2);font-weight:500}
.leg-dot{width:8px;height:8px;border-radius:50%}
.tabs{display:flex;gap:6px;background:var(--bg3);padding:4px;border-radius:999px}
.tabs .nav-btn{background:transparent}
.tabs .nav-btn.active{background:var(--bg2);color:var(--text);box-shadow:var(--shadow)}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeIn .25s ease}

@keyframes fadeIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}

.toolbar{display:flex;align-items:center;gap:16px;margin-bottom:20px;flex-wrap:wrap}

.user-filter{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.user-filter-btn{
  display:flex;align-items:center;gap:6px;padding:6px 12px 6px 6px;border-radius:999px;
  border:1px solid var(--border);background:var(--bg3);cursor:pointer;font-size:12px;font-weight:600;
  color:var(--text);font-family:inherit;transition:border-color .15s ease,background-color .15s ease;
}
.user-filter-btn:hover{background:var(--border-strong)}
.user-filter-btn.active{border-color:var(--primary);background:color-mix(in srgb, var(--primary) 14%, var(--bg3))}
.user-filter-btn .mini-avatar{
  width:20px;height:20px;border-radius:50%;overflow:hidden;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:9px;font-weight:700;
}
.user-filter-btn .mini-avatar img{width:100%;height:100%;object-fit:cover}

/* Grille calendrier */
.cal-header{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-bottom:6px}
.cal-header div{text-align:center;font-size:11px;font-weight:600;color:var(--text2);padding:6px 0;text-transform:uppercase;letter-spacing:.06em}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal-day{
  background:var(--bg2);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  height:112px;
  padding:8px;
  position:relative;
  overflow:hidden;
  transition:border-color .15s ease,box-shadow .15s ease;
}
.cal-day:hover{border-color:var(--border-strong);box-shadow:var(--shadow)}
.cal-day.other-month{background:transparent;opacity:.4}
.cal-day.today{border-color:var(--primary);border-width:1.5px}
.cal-day.today .day-num{background:var(--primary);color:var(--primary-text);border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center}
.day-num{font-size:13px;font-weight:600;margin-bottom:6px;width:24px;height:24px;display:flex;align-items:center;justify-content:center}
.task-chip{
  border-radius:6px;padding:3px 7px;font-size:11px;font-weight:600;margin-bottom:3px;cursor:pointer;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;
  display:flex;align-items:center;gap:4px;
  border-left:3px solid transparent;transition:filter .1s ease;
}
.task-chip-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip-avatar{
  width:14px;height:14px;border-radius:50%;flex-shrink:0;overflow:hidden;
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:8px;font-weight:700;
}
.chip-avatar img{width:100%;height:100%;object-fit:cover}
.task-chip:hover{filter:brightness(0.94)}
.task-chip.prio-high{background:color-mix(in srgb, var(--high) 16%, var(--bg2));color:var(--high);border-left-color:var(--high)}
.task-chip.prio-medium{background:color-mix(in srgb, var(--medium) 18%, var(--bg2));color:var(--medium);border-left-color:var(--medium)}
.task-chip.prio-low{background:color-mix(in srgb, var(--low) 16%, var(--bg2));color:var(--low);border-left-color:var(--low)}
.task-chip.urgent{background:color-mix(in srgb, var(--high) 16%, var(--bg2));border-left-color:var(--high)}
.task-chip.done{opacity:.5;text-decoration:line-through}
.more-chip{font-size:10px;color:var(--text2);padding:1px 4px;cursor:pointer;font-weight:600}
.more-chip:hover{color:var(--primary)}

/* Panel jour */
.day-panel{
  position:fixed;right:16px;top:16px;bottom:16px;width:380px;
  background:var(--bg-elevated);
  -webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  z-index:200;padding:24px;overflow-y:auto;display:none;flex-direction:column;gap:12px;
  box-shadow:var(--shadow-lg);
}
.day-panel.open{display:flex;animation:slideIn .25s ease}
@keyframes slideIn{from{opacity:0;transform:translateX(12px)}to{opacity:1;transform:translateX(0)}}
.day-panel h2{font-size:17px;font-weight:700;margin-bottom:4px;letter-spacing:-.02em;text-transform:capitalize}
#panelTasks{display:flex;flex-direction:column;gap:8px}
.panel-section-title{font-size:12px;font-weight:700;color:var(--text2);text-transform:uppercase;letter-spacing:.06em;margin-top:8px;margin-bottom:2px}
.panel-section-title:first-child{margin-top:0}
.panel-task{background:var(--bg3);border-radius:var(--radius-sm);padding:14px 16px;border-left:3px solid var(--primary)}
.panel-task-title{font-weight:600;font-size:14px;margin-bottom:6px}
.panel-task-meta{font-size:12px;color:var(--text2);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.panel-task input[type=date]{font-size:12px;padding:6px 8px;border-radius:8px;border:1px solid var(--border);background:var(--bg2);color:var(--text);font-family:inherit}
.panel-close{position:absolute;top:16px;right:16px;background:var(--bg3);border:none;border-radius:50%;width:28px;height:28px;font-size:16px;cursor:pointer;color:var(--text2);display:flex;align-items:center;justify-content:center}
.panel-close:hover{background:var(--border-strong)}

/* Mes tâches */
.task-list{display:flex;flex-direction:column;gap:10px;max-width:720px}
.task-row{
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 16px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  transition:box-shadow .15s ease;
}
.task-row:hover{box-shadow:var(--shadow)}
.task-row-title{flex:1;min-width:200px;font-weight:600;font-size:14px}
.task-row select,.task-row input[type=date]{
  font-size:12px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);
  background:var(--bg3);color:var(--text);font-family:inherit;font-weight:500;
}

/* Toggle dark/light */
.theme-toggle{
  position:relative;width:52px;height:30px;border-radius:999px;background:var(--bg3);
  border:1px solid var(--border);cursor:pointer;flex-shrink:0;transition:background-color .2s ease;
}
.theme-toggle::after{
  content:'';position:absolute;top:2px;left:2px;width:24px;height:24px;border-radius:50%;
  background:var(--bg2);box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s cubic-bezier(.4,0,.2,1);
}
body.dark .theme-toggle::after{transform:translateX(22px)}
.theme-toggle-icons{position:absolute;inset:0;display:flex;align-items:center;justify-content:space-between;padding:0 7px;font-size:12px;pointer-events:none}

.google-status{font-size:12px;color:var(--text2);display:flex;align-items:center;gap:8px;font-weight:500}

/* Overlay modal (login PIN, création rapide) */
.pin-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.35);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  display:none;align-items:center;justify-content:center;z-index:300;
  animation:overlayIn .2s ease;
}
@keyframes overlayIn{from{opacity:0}to{opacity:1}}
.pin-overlay.open{display:flex}
.pin-box{
  background:var(--bg2);border-radius:var(--radius-lg);padding:32px;width:300px;
  display:flex;flex-direction:column;gap:16px;align-items:center;
  box-shadow:var(--shadow-lg);border:1px solid var(--border);
  animation:popIn .2s cubic-bezier(.4,0,.2,1);
}
@keyframes popIn{from{opacity:0;transform:scale(.94) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}
.pin-box .user-avatar{width:68px;height:68px;font-size:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;overflow:hidden}
.pin-box .user-avatar img{width:100%;height:100%;object-fit:cover}
.pin-box .user-name{font-size:16px;font-weight:600}
.pin-box input[type=text],.pin-box input[type=password],.pin-box input[type=date],.pin-box select{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--bg3);color:var(--text);font-size:14px;font-family:inherit;
}
.pin-box input[type=password]{font-size:20px;text-align:center;letter-spacing:6px}
.pin-box input:focus,.pin-box select:focus{outline:none;border-color:var(--primary)}
.pin-box .today-btn{width:100%;padding:12px;font-size:14px}
.pin-box label.checkbox-label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text2);align-self:flex-start}
.login-error{color:var(--high);font-size:13px;text-align:center;min-height:16px;font-weight:500}
.pin-back{background:none;border:none;color:var(--text2);font-size:13px;cursor:pointer;font-family:inherit}
.pin-back:hover{color:var(--text)}
.assignee-picker{display:flex;flex-wrap:wrap;gap:8px;width:100%}
.assignee-chip{
  display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);
  background:var(--bg3);font-size:12px;font-weight:600;cursor:pointer;transition:border-color .15s ease;
}
.assignee-chip.selected{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary) inset}
.assignee-chip .dot{width:8px;height:8px;border-radius:50%}

@media(max-width:700px){
  body{padding:12px}
  .cal-day{min-height:64px;padding:6px}
  .task-chip{display:none}
  .cal-day.has-tasks::after{content:attr(data-count);background:var(--primary);color:var(--primary-text);border-radius:50%;width:18px;height:18px;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;position:absolute;bottom:4px;right:4px}
  .day-panel{width:auto;left:12px;right:12px;top:auto;bottom:12px;height:60vh;border-radius:var(--radius-lg)}
}