:root{
  --bg: #14151a;
  --bg-elevated: #1c1e24;
  --surface: #21232b;
  --surface-hover: #292b35;
  --border: #33353f;
  --text: #f2ede4;
  --text-dim: #9b9ba3;
  --text-faint: #5c5d68;
  --accent: #d9b568;
  --accent-soft: rgba(217,181,104,0.14);
  --work: #7fae8f;
  --work-soft: rgba(127,174,143,0.16);
  --off: #b47b78;
  --off-soft: rgba(180,123,120,0.16);
  --vacation: #8f8fd1;
  --vacation-soft: rgba(143,143,209,0.18);
  --shadow: 0 20px 40px -20px rgba(0,0,0,0.6);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;
}

:root[data-theme="light"]{
  --bg: #f6f2ea;
  --bg-elevated: #ffffff;
  --surface: #ffffff;
  --surface-hover: #f0ebe0;
  --border: #e4dccb;
  --text: #201d18;
  --text-dim: #74705f;
  --text-faint: #b1a891;
  --accent: #b5842c;
  --accent-soft: rgba(181,132,44,0.12);
  --work: #4c8362;
  --work-soft: rgba(76,131,98,0.14);
  --off: #a55c53;
  --off-soft: rgba(165,92,83,0.13);
  --vacation: #6a63b6;
  --vacation-soft: rgba(106,99,182,0.14);
  --shadow: 0 20px 40px -24px rgba(50,40,20,0.35);
}

*{ box-sizing:border-box; -webkit-tap-highlight-color: transparent; }

html,body{
  margin:0; padding:0;
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  overflow-x:hidden;
}

body{
  min-height:100vh;
  transition: background .3s ease, color .3s ease;
}

.grain{
  position:fixed; inset:0; pointer-events:none; z-index:0; opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

#app{
  position:relative; z-index:1;
  max-width:520px; margin:0 auto;
  padding: 18px 16px 40px;
  opacity:0; transform: translateY(8px);
  animation: appIn .5s cubic-bezier(.2,.8,.2,1) forwards;
}
@keyframes appIn{ to{ opacity:1; transform:none; } }

.topbar{ display:flex; flex-direction:column; align-items:center; gap:2px; margin-bottom:14px; }
.topbar-label{
  font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:.22em; text-transform:uppercase;
  color: var(--text-faint);
}
.month-title{
  font-family:'Fraunces', serif; font-style:italic; font-weight:500;
  font-size:30px; margin:2px 0 10px; color:var(--text);
  letter-spacing:.01em;
}
.month-nav{ display:flex; align-items:center; gap:10px; }
.nav-btn{
  background: var(--surface); border:1px solid var(--border); color:var(--text-dim);
  width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition: background .2s, color .2s, transform .15s;
}
.nav-btn svg{ width:16px; height:16px; }
.nav-btn:active{ transform: scale(.9); }
.nav-btn:hover{ background:var(--surface-hover); color:var(--text); }
.today-btn{
  width:auto; border-radius:20px; padding:0 14px; font-family:'IBM Plex Mono',monospace;
  font-size:11px; letter-spacing:.08em; text-transform:uppercase;
}

.month-total-strip{
  display:flex; align-items:baseline; justify-content:space-between;
  background: linear-gradient(135deg, var(--accent-soft), transparent 70%);
  border:1px solid var(--border); border-radius: var(--radius-md);
  padding:14px 16px; margin-bottom:16px;
}
.mts-label{ font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--text-dim); }
.mts-value{ font-family:'Fraunces',serif; font-weight:600; font-size:22px; color:var(--accent); }

.weekdays{
  display:grid; grid-template-columns: repeat(7,1fr); text-align:center;
  font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--text-faint);
  margin-bottom:6px; padding: 0 2px;
}
.weekdays .wknd{ color: var(--off); opacity:.75; }

.grid{
  display:grid; grid-template-columns: repeat(7,1fr); gap:6px;
  margin-bottom:22px;
}

.day-cell{
  position:relative;
  aspect-ratio: 1 / 1.08;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border:1px solid var(--border);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  padding:4px 2px;
  cursor:pointer;
  opacity:0; transform: translateY(6px) scale(.94);
  animation: cellIn .38s cubic-bezier(.2,.8,.2,1) forwards;
  transition: background .18s, border-color .18s, transform .12s;
}
.day-cell:active{ transform: scale(.93); }
.day-cell.empty{ visibility:hidden; cursor:default; }
@keyframes cellIn{ to{ opacity:1; transform:none; } }

.day-cell .dnum{ font-size:12px; color:var(--text-dim); font-weight:500; }
.day-cell .damt{ font-size:10.5px; margin-top:3px; color:var(--text-faint); font-weight:600; letter-spacing:-.01em; }

.day-cell.worked{ background: var(--work-soft); border-color: transparent; }
.day-cell.worked .dnum{ color:var(--text); }
.day-cell.worked .damt{ color: var(--work); }

.day-cell.mark-off{ background: var(--off-soft); }
.day-cell.mark-off .dnum{ color: var(--off); }
.day-cell.mark-vacation{ background: var(--vacation-soft); }
.day-cell.mark-vacation .dnum{ color: var(--vacation); }

.day-cell.today{ box-shadow: inset 0 0 0 1.5px var(--accent); }
.day-cell.today .dnum{ color:var(--accent); font-weight:700; }

.day-cell.future{ opacity:.55 !important; }

.periods{ display:flex; flex-direction:column; gap:12px; }
.period-card{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-lg);
  padding:16px 18px; box-shadow: var(--shadow);
}
.period-head{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom:12px; }
.period-range{ font-family:'Fraunces',serif; font-style:italic; font-size:19px; }
.period-pay-date{ font-size:10px; letter-spacing:.08em; text-transform:uppercase; color:var(--text-faint); }

.period-rows{ margin:0; display:flex; flex-direction:column; gap:7px; }
.period-rows > div{ display:flex; justify-content:space-between; font-size:12.5px; }
.period-rows dt{ color:var(--text-dim); font-weight:400; }
.period-rows dd{ margin:0; color:var(--text); font-weight:500; }

.period-total{
  display:flex; justify-content:space-between; align-items:baseline;
  margin-top:12px; padding-top:12px; border-top:1px dashed var(--border);
}
.period-total span{ font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--text-dim); }
.period-total strong{ font-family:'Fraunces',serif; font-weight:600; font-size:20px; color:var(--accent); }

/* Bottom sheet */
.sheet-overlay{
  position:fixed; inset:0; background:rgba(0,0,0,0.45); backdrop-filter: blur(2px);
  z-index:20; opacity:0; pointer-events:none; transition: opacity .25s ease;
}
.sheet-overlay.open{ opacity:1; pointer-events:auto; }
.sheet{
  position:absolute; left:0; right:0; bottom:0;
  background: var(--bg-elevated);
  border-radius: 26px 26px 0 0;
  padding: 10px 22px 30px;
  max-width:520px; margin:0 auto;
  transform: translateY(100%);
  transition: transform .32s cubic-bezier(.2,.85,.25,1);
  box-shadow: 0 -20px 50px rgba(0,0,0,.35);
}
.sheet-overlay.open .sheet{ transform: translateY(0); }
.sheet-handle{ width:36px; height:4px; border-radius:2px; background:var(--border); margin: 6px auto 16px; }
.sheet-date{ font-family:'Fraunces',serif; font-style:italic; font-size:22px; margin-bottom:14px; }

.sheet-source{ font-size:11px; color:var(--text-faint); margin-bottom:10px; min-height:14px; }

.sheet-inputs{ display:flex; gap:10px; margin-bottom:12px; }
.sheet-field{
  flex:1; background:var(--surface); border:1px solid var(--border); border-radius: var(--radius-md);
  padding:10px 14px; display:flex; flex-direction:column; gap:6px;
}
.ss-label{ font-size:10px; letter-spacing:.1em; text-transform:uppercase; color:var(--text-faint); }
.sheet-field input{
  font-family:'Fraunces',serif; font-weight:600; font-size:18px; color:var(--text);
  background:transparent; border:none; outline:none; padding:0; width:100%;
  -moz-appearance: textfield;
}
.sheet-field input::-webkit-outer-spin-button,
.sheet-field input::-webkit-inner-spin-button{ -webkit-appearance:none; margin:0; }

.save-btn{
  width:100%; border:none; border-radius: var(--radius-md); background: var(--accent); color:#1c1508;
  font-family:'IBM Plex Mono',monospace; font-weight:600; font-size:12px; letter-spacing:.08em; text-transform:uppercase;
  padding:13px; margin-bottom:18px; cursor:pointer; transition: transform .12s, opacity .15s;
}
.save-btn:active{ transform: scale(.97); }
.save-btn.saved{ opacity:.6; }

.sheet-breakdown{ display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
.sb-row{ display:flex; justify-content:space-between; font-size:13px; color:var(--text-dim); }
.sb-row span:last-child{ color:var(--text); font-weight:500; }
.sb-total{ padding-top:10px; border-top:1px dashed var(--border); }
.sb-total span{ color:var(--accent) !important; font-weight:600 !important; font-size:15px; }

.sheet-mark-label{ font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--text-faint); margin-bottom:10px; }
.mark-toggle{ display:grid; grid-template-columns: repeat(4,1fr); gap:6px; }
.mark-btn{
  border:1px solid var(--border); background:var(--surface); color:var(--text-dim);
  font-family:'IBM Plex Mono',monospace; font-size:10.5px; padding:10px 4px; border-radius: var(--radius-sm);
  cursor:pointer; transition: all .15s;
}
.mark-btn.active{ color:#14151a; border-color:transparent; font-weight:600; }
.mark-btn.active.mark-work{ background: var(--work); color:#0f1a13; }
.mark-btn.active.mark-off{ background: var(--off); color:#1a0f0e; }
.mark-btn.active.mark-vacation{ background: var(--vacation); color:#12101f; }
.mark-btn.active[data-mark="none"]{ background: var(--border); color:var(--text); }

@media (max-width:360px){
  .month-title{ font-size:25px; }
  .day-cell .damt{ font-size:9px; }
}