:root {
  --bg: #0e0e0e;
  --surface: #1c1c1c;
  --text: #ffffff;
  --border: #333;
  --primary: #3a82f6;
  --danger: #ef4444;
}

:root[data-theme="light"] {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --text: #111827;
  --border: #e5e7eb;
  --primary: #2563eb;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  padding-bottom: 80px; /* Space for fixed bottom button */
}

/* Hide Number Arrows */
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
  -webkit-appearance: none; 
  margin: 0; 
}
input[type=number] { -moz-appearance: textfield; }

/* Header */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 { margin: 0; font-size: 1.2rem; display: flex; gap: 10px; align-items: center; }

.actions { display: flex; gap: 8px; }

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Main Layout */
main { max-width: 600px; margin: 0 auto; padding: 20px; }

h2 { font-size: 1rem; text-transform: uppercase; letter-spacing: 1px; color: var(--primary); margin-top: 30px; }

/* Config Row */
.config-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 15px;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  transition: transform 0.2s;
}

.config-row.dragging { opacity: 0.5; transform: scale(0.98); }

.row-top { display: flex; gap: 10px; align-items: center; }

/* Drag Handle */
.handle { cursor: grab; color: var(--text); opacity: 0.5; padding: 5px; }

/* Label Input */
.inp-label {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 1.1rem;
  padding: 5px;
}

/* Time Inputs (HH:MM:SS) */
.time-group {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(0,0,0,0.2);
  padding: 4px 8px;
  border-radius: 6px;
}
:root[data-theme="light"] .time-group { background: #f0f0f0; }

.time-inp {
  width: 24px;
  background: transparent;
  border: none;
  color: var(--text);
  text-align: center;
  font-family: monospace;
  font-size: 1rem;
}

/* Controls inside row */
.row-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.sound-select {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 0.85rem;
  max-width: 150px;
}

.btn-del { color: var(--danger); background: transparent; border: none; cursor: pointer; }

/* Sound Library */
.upload-box {
  border: 2px dashed var(--border);
  padding: 20px;
  text-align: center;
  border-radius: 12px;
  margin-bottom: 15px;
}
.btn-upload input { display: none; }
.sound-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sound-item {
  background: var(--surface);
  padding: 10px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--border);
}

/* Focus Mode Overlay */
.focus-mode {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.focus-mode.active { opacity: 1; pointer-events: all; }

#timer { font-size: 5rem; font-weight: bold; font-variant-numeric: tabular-nums; line-height: 1; margin: 20px 0; }
.focus-label { font-size: 2rem; color: var(--primary); font-weight: 600; }
.next-activity { margin-top: 20px; opacity: 0.6; }

/* Buttons */
.primary {
  background: var(--primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}
.primary.big { width: 100%; padding: 18px; font-size: 1.2rem; }
.primary.full-width { width: 100%; margin-top: 10px; }

.secondary {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 8px 20px;
  border-radius: 8px;
  cursor: pointer;
}

.bottom-action {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  padding: 15px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  max-width: 600px;
  margin: 0 auto;
}