/* ==========================================================================
   CSS Variables — Linear-inspired dark premium
   ========================================================================== */

:root {
  /* Backgrounds */
  --bg:            #12121a;
  --bg-subtle:     #1a1a23;
  --bg-card:       #181822;
  --bg-elevated:   #20202d;
  --bg-hover:      rgba(255, 255, 255, 0.045);
  --bg-active:     rgba(255, 255, 255, 0.065);
  --input-bg:      #11111a;

  /* Text */
  --text:          #e2e2ea;
  --text-secondary: #9b9bb0;
  --text-muted:    #65657d;

  /* Accent — muted indigo-violet */
  --accent:        #7c6aef;
  --accent-dim:    #6455cc;
  --accent-soft:   rgba(124, 106, 239, 0.12);
  --accent-glow:   rgba(124, 106, 239, 0.18);
  --accent-text:   #a496ff;

  /* Semantic */
  --success:       #34d399;
  --success-soft:  rgba(52, 211, 153, 0.12);
  --warning:       #fbbf24;
  --error:         #f87171;
  --error-bright:  #f85149;
  --error-soft:    rgba(248, 113, 113, 0.12);

  /* Borders */
  --border:        rgba(255, 255, 255, 0.07);
  --border-hover:  rgba(255, 255, 255, 0.13);
  --border-accent: rgba(124, 106, 239, 0.35);

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;

  /* Radii */
  --radius-sm:  6px;
  --radius:     10px;
  --radius-lg:  14px;
  --radius-xl:  20px;

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(0, 0, 0, 0.28);
  --shadow-md:   0 8px 20px rgba(0, 0, 0, 0.34);
  --shadow-lg:   0 16px 36px rgba(0, 0, 0, 0.42);
  --shadow-glow: 0 0 24px var(--accent-glow);
  --card-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
  --card-shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.32), 0 0 0 1px rgba(124, 106, 239, 0.06);

  /* Typography */
  --font-sans:  'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Motion */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast:   150ms;
  --dur-normal: 200ms;
  --dur-slow:   300ms;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

::selection {
  background: var(--accent-soft);
  color: #fff;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  background-image: radial-gradient(ellipse 105% 72% at 50% 0%, #222230 0%, var(--bg-subtle) 42%, transparent 66%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  font-size: 14px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


::selection {
  background: var(--accent-soft);
  color: var(--accent-text);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.hidden { display: none; }

/* ==========================================================================
   Layout
   ========================================================================== */

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-lg) var(--space-2xl);
}

.main { display: flex; flex-direction: column; gap: var(--space-lg); }

/* ==========================================================================
   Global Inputs & Textareas
   ========================================================================== */

.app textarea,
.app input[type="text"],
.app input:not([type]) {
  overflow-wrap: break-word;
  word-break: break-word;
  box-sizing: border-box;
}

.app textarea {
  white-space: pre-wrap;
  overflow-x: hidden;
  overflow-y: hidden;
  resize: vertical;
  min-height: 2.5em;
}

.input-field {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), box-shadow var(--dur-fast);
}
.input-field:hover {
  border-color: var(--border-hover);
  background: var(--bg-card);
}
.input-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.input-field[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
  font-family: var(--font-mono);
  font-size: 13px;
}
.input-field[type="number"]::-webkit-inner-spin-button,
.input-field[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
}
.setting-row .input-field {
  width: 5rem;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.setting-row .input-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-left: auto;
}

.header-total-all {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: -0.01em;
}
.header-total-all strong {
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ==========================================================================
   Tabs
   ========================================================================== */

.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-card);
  padding: 3px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.tab {
  padding: 0.35rem 0.85rem;
  background: transparent;
  border: none;
  border-radius: calc(var(--radius) - 3px);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: all var(--dur-fast) var(--ease-out);
}
.tab:hover {
  color: var(--text-secondary);
  background: var(--bg-hover);
}
.tab.active {
  background: var(--bg-elevated);
  color: var(--text);
}
.tab.active:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 1px var(--border-hover), var(--shadow-sm);
}

/* ==========================================================================
   Pill Buttons (month/week arrows, toggles)
   ========================================================================== */

.pill-btn {
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--dur-fast) var(--ease-out);
}
.pill-btn:hover {
  color: var(--text);
  background: var(--bg-elevated);
  border-color: var(--border-hover);
}
.pill-btn.active {
  background: var(--accent-soft);
  color: var(--accent-text);
  border-color: var(--border-accent);
}
.pill-btn.active:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}

/* ==========================================================================
   Header period picker (month / week triggers)
   ========================================================================== */

#headerDiaryInfo {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.header-period-picker {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.header-period-trigger {
  background: none;
  border: none;
  padding: 0.25rem 0.4rem;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast), background var(--dur-fast);
}
.header-period-trigger:hover {
  color: var(--accent-text);
  background: var(--accent-soft);
}
.header-period-sep {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
  user-select: none;
  margin: 0 0.1em;
}

.header-period-picker.week-picker-shake {
  animation: week-picker-shake 0.4s var(--ease-spring);
}
.header-period-picker.week-picker-warning .header-period-trigger {
  color: var(--error-bright);
}

/* ==========================================================================
   Period picker modal (wheel)
   ========================================================================== */

.period-picker-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}
.period-picker-modal.hidden {
  display: none;
}

.period-picker-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.period-picker-dialog {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 380px;
}

.period-picker-title {
  margin: 0 0 var(--space-lg);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.period-calendar {
  margin-bottom: var(--space-lg);
}

.period-calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.period-calendar-nav-btn {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--dur-fast);
}
.period-calendar-nav-btn:hover {
  color: var(--accent-text);
  border-color: var(--border-accent);
  background: var(--accent-soft);
}

.period-calendar-month {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.period-calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  text-align: center;
}

.period-calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.period-calendar-day {
  aspect-ratio: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.period-calendar-day:hover {
  background: var(--bg-hover);
  color: var(--text);
}
.period-calendar-day.other-month {
  color: var(--text-muted);
  opacity: 0.6;
}
.period-calendar-day.week-selected {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
}
.period-calendar-day.week-selected:hover {
  background: var(--accent-glow);
  color: var(--accent-text);
}

.period-picker-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  justify-content: space-between;
}

.period-picker-jump {
  padding: 0.4rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur-fast);
}
.period-picker-jump:hover {
  color: var(--accent-text);
  border-color: var(--border-accent);
  background: var(--accent-soft);
}

.period-picker-apply {
  padding: 0.5rem 1.25rem;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur-fast), box-shadow var(--dur-fast);
}
.period-picker-apply:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ==========================================================================
   Month & Week Summary in Header
   ========================================================================== */

.month-summary .label {
  color: var(--text-muted);
  margin-right: 0.4rem;
  font-size: 13px;
}
.month-summary span:last-child {
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-text);
}

/* Month picker */
.month-picker { display: flex; align-items: center; }
.month-picker .pill-btn {
  width: 2rem; height: 2rem; padding: 0; font-size: 0.9rem;
  display: inline-flex; align-items: center; justify-content: center;
}
#currentMonthLabel {
  min-width: 140px;
  text-align: center;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.01em;
}

/* Week picker */
.week-picker { display: flex; align-items: center; gap: 0.4rem; }
.week-picker .pill-btn {
  width: 2rem; height: 2rem; padding: 0; font-size: 0.9rem;
  display: inline-flex; align-items: center; justify-content: center;
}
#currentWeekLabel {
  min-width: 120px;
  text-align: center;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.01em;
}

.week-picker-shake {
  animation: week-picker-shake 0.4s var(--ease-spring);
}
@keyframes week-picker-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}
.week-picker-warning { color: var(--error-bright); }
.week-picker-warning #currentWeekLabel,
.week-picker-warning .week-picker .pill-btn {
  color: var(--error-bright);
  border-color: var(--error-soft);
}

/* ==========================================================================
   Session Form
   ========================================================================== */

.form-section {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: var(--space-lg);
  border: 1px solid var(--border);
  transition: border-color var(--dur-normal);
}
.form-section:hover {
  border-color: var(--border-hover);
}
.form-section h2 {
  margin: 0 0 var(--space-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.form-section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-right: 2.2rem;
}
.form-section-head h2 {
  margin: 0;
}

.btn-clear-form {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-normal) var(--ease-out), visibility var(--dur-normal), color var(--dur-fast), background var(--dur-fast);
}
.form-section:hover .btn-clear-form { opacity: 1; visibility: visible; }
.btn-clear-form:hover { color: var(--text); background: var(--bg-hover); }

#sessionForm .row-fields {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
#sessionForm .row-fields .field { display: flex; flex-direction: column; gap: var(--space-xs); }
#sessionForm .row-fields .field label {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.time-range-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.time-range-sep {
  color: var(--text-muted);
  font-size: 13px;
  flex-shrink: 0;
}

#sessionForm .breaks-row { display: flex; align-items: center; gap: 0.5rem; }
#sessionForm .field-breaks input { width: 5rem; }

#sessionForm .btn-pause {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: all var(--dur-fast);
}
#sessionForm .btn-pause:hover {
  background: var(--bg-elevated);
  border-color: var(--border-hover);
}
#sessionForm .btn-pause .pause-icon {
  display: inline-flex;
  flex-shrink: 0;
}
#sessionForm .btn-pause .pause-icon svg { display: block; }
#sessionForm .btn-pause.paused {
  border-color: var(--border-accent);
  background: var(--accent-soft);
}
#sessionForm .btn-pause.paused .pause-icon {
  animation: pause-icon-pulse 1.2s ease-in-out infinite;
}
@keyframes pause-icon-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

#sessionForm input,
#sessionForm textarea {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), box-shadow var(--dur-fast);
}
#sessionForm input:hover,
#sessionForm textarea:hover {
  border-color: var(--border-hover);
  background: var(--bg-card);
}
#sessionForm input:focus,
#sessionForm textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

#sessionForm input[type="date"],
#sessionForm input[type="time"],
#sessionForm input[type="number"] {
  -webkit-user-select: none;
  user-select: none;
}
#sessionForm input[type="date"],
#sessionForm input[type="time"] {
  padding-right: 2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c72' stroke-width='2' stroke-linecap='round'%3E%3Crect x='3' y='4' width='18' height='18' rx='2'/%3E%3Cline x1='16' y1='2' x2='16' y2='6'/%3E%3Cline x1='8' y1='2' x2='8' y2='6'/%3E%3Cline x1='3' y1='10' x2='21' y2='10'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 1rem;
}
#sessionForm input[type="time"] {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c72' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='6' x2='12' y2='12'/%3E%3Cline x1='16' y1='14' x2='12' y2='12'/%3E%3C/svg%3E");
}
#sessionForm input[type="date"]::-webkit-calendar-picker-indicator,
#sessionForm input[type="time"]::-webkit-calendar-picker-indicator {
  position: absolute;
  right: 0.5rem;
  width: 1.5rem;
  height: 100%;
  margin: 0; padding: 0;
  opacity: 0;
  cursor: pointer;
}
#sessionForm input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
  font-family: var(--font-mono);
  font-size: 13px;
}
#sessionForm input[type="number"]::-webkit-inner-spin-button,
#sessionForm input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
}
#sessionForm textarea { width: 100%; resize: vertical; min-height: 60px; }
#sessionForm textarea::placeholder { color: var(--text-muted); opacity: 1; }

#sessionForm .row-notes { display: flex; flex-direction: column; gap: var(--space-xs); margin-bottom: var(--space-md); }
#sessionForm .row-notes label {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
#sessionForm .row-actions { margin-top: 0; display: flex; gap: var(--space-sm); align-items: center; }
.form-hint {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.session-duration-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  padding: 0;
  border: none;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
  background: transparent;
}
.session-duration-hint.hidden {
  display: none;
}
.session-duration-hint::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--text-muted);
  opacity: 0.55;
}
.session-duration-hint.is-live {
  color: var(--text-secondary);
}
.session-duration-hint.is-live::before {
  background: var(--accent-dim);
  opacity: 0.75;
  animation: session-live-dot-blink 1.2s ease-in-out infinite;
}
@keyframes session-live-dot-blink {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 0.2; }
}
.form-validation {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  background: transparent;
  border-left: 3px solid transparent;
  transition: all var(--dur-fast);
}
.form-validation.error {
  color: var(--error);
  background: var(--error-soft);
  border-left-color: var(--error);
}

#sessionForm .btn-cancel {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur-fast);
}
#sessionForm .btn-cancel:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
  color: var(--text);
}
#sessionForm button[type="submit"] {
  background: var(--accent-dim);
  color: #fff;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all var(--dur-fast);
}
#sessionForm button[type="submit"]:hover {
  background: var(--accent);
  box-shadow: var(--shadow-glow);
}
#sessionForm button[type="submit"]:active {
  transform: scale(0.97);
  box-shadow: none;
}

/* ==========================================================================
   Sessions Table
   ========================================================================== */

.sessions-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  transition: border-color var(--dur-normal);
}
.sessions-section:hover {
  border-color: var(--border-hover);
}

.sessions-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
.sessions-section h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.sessions-period-pickers {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.sessions-view-toggle {
  display: flex;
  gap: 2px;
  background: var(--bg-elevated);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.sessions-view-toggle .pill-btn {
  padding: 0.3rem 0.65rem;
  font-size: 13px;
  border: 1px solid transparent;
  border-radius: calc(var(--radius-sm) - 2px);
}

.sessions-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.sessions-table th,
.sessions-table td {
  padding: 0.7rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.sessions-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.sessions-table tbody tr {
  cursor: pointer;
  transition: background var(--dur-fast);
}
.sessions-table tbody tr:hover { background: var(--bg-hover); }
.sessions-table tbody tr:last-child td { border-bottom: none; }
.sessions-table .notes {
  max-width: 280px;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-secondary);
}
.sessions-table .studied {
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-text);
}
.sessions-table .th-actions { width: 5rem; text-align: right; }
.sessions-table .btn-edit,
.sessions-table .btn-delete {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem 0.5rem;
  font-size: 1.15rem;
  line-height: 1;
  min-width: 2rem;
  border-radius: var(--radius-sm);
  transition: all var(--dur-fast);
}
.sessions-table .btn-delete { font-size: 1.3rem; }
.sessions-table .btn-edit:hover {
  color: var(--accent-text);
  background: var(--accent-soft);
}
.sessions-table .btn-delete:hover {
  color: var(--error);
  background: var(--error-soft);
}
.sessions-table .row-actions-cell { white-space: nowrap; }

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 13px;
  margin: 0;
  padding: var(--space-2xl) 0;
  text-align: center;
}
.empty-state-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xs);
}
.empty-state-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-muted);
  fill: none;
  stroke-width: 1.5;
}
.empty-state.hidden { display: none; }

/* Inline edit */
.inline-editing {
  background: var(--bg-elevated) !important;
}
.inline-editing td {
  vertical-align: middle;
}
.sessions-table td:first-child { width: 6.5rem; }
.sessions-table td:nth-child(2) { white-space: nowrap; }
.sessions-table .notes { max-width: none; }

.inline-input {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 13px;
  width: 100%;
  box-sizing: border-box;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.inline-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.inline-time-cell {
  display: flex;
  align-items: center;
  gap: 4px;
}
.inline-time { width: 5.5rem; }
.inline-time-sep {
  color: var(--text-muted);
  font-size: 12px;
  flex-shrink: 0;
}
.inline-breaks {
  width: 4rem;
  font-family: var(--font-mono);
  font-size: 12px;
  -moz-appearance: textfield;
  appearance: textfield;
}
.inline-breaks::-webkit-inner-spin-button,
.inline-breaks::-webkit-outer-spin-button {
  -webkit-appearance: none;
  appearance: none;
}
.inline-input[type="date"],
.inline-input[type="time"] {
  padding-right: 1.75rem;
  background-repeat: no-repeat;
  background-position: right 0.4rem center;
  background-size: 0.9rem;
}
.inline-input[type="date"] {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c72' stroke-width='2' stroke-linecap='round'%3E%3Crect x='3' y='4' width='18' height='18' rx='2'/%3E%3Cline x1='16' y1='2' x2='16' y2='6'/%3E%3Cline x1='8' y1='2' x2='8' y2='6'/%3E%3Cline x1='3' y1='10' x2='21' y2='10'/%3E%3C/svg%3E");
}
.inline-input[type="time"] {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c72' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='6' x2='12' y2='12'/%3E%3Cline x1='16' y1='14' x2='12' y2='12'/%3E%3C/svg%3E");
}
.inline-input[type="date"]::-webkit-calendar-picker-indicator,
.inline-input[type="time"]::-webkit-calendar-picker-indicator {
  position: absolute;
  right: 0.3rem;
  width: 1.2rem;
  height: 100%;
  margin: 0; padding: 0;
  opacity: 0;
  cursor: pointer;
}
.inline-notes {
  min-height: 2.5em;
  resize: vertical;
  font-size: 13px;
}
.btn-inline-save,
.btn-inline-cancel {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.35rem 0.5rem;
  font-size: 1.1rem;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: all var(--dur-fast);
}
.btn-inline-save {
  color: var(--success);
}
.btn-inline-save:hover {
  background: var(--success-soft);
}
.btn-inline-cancel {
  color: var(--text-muted);
}
.btn-inline-cancel:hover {
  color: var(--error);
  background: var(--error-soft);
}

/* Form success flash */
.form-section.form-success {
  animation: form-success-flash var(--dur-slow) var(--ease-out);
}
@keyframes form-success-flash {
  0%   { border-color: var(--success); box-shadow: 0 0 0 3px var(--success-soft); }
  100% { border-color: var(--border); box-shadow: 0 0 0 3px transparent; }
}

/* ==========================================================================
   Month Summary (Diary & Dashboard)
   ========================================================================== */

.month-summary-section h2 {
  margin: 0 0 var(--space-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.month-summary-section .muted { color: var(--text-muted); font-weight: 400; font-size: 13px; }
.month-summary-section textarea {
  width: 100%;
  min-height: 70px;
  padding: 0.5rem 0.75rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  resize: vertical;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), box-shadow var(--dur-fast);
}
.month-summary-section textarea:hover {
  border-color: var(--border-hover);
  background: var(--bg-card);
}
.month-summary-section textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ==========================================================================
   Week Goals
   ========================================================================== */

.current-week-goals-section {
  position: relative;
  margin-bottom: 0;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--dur-normal);
}
.current-week-goals-section:hover {
  border-color: var(--border-hover);
}
.current-week-goals-section h2 {
  margin: 0 0 var(--space-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.btn-add-goal {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-normal) var(--ease-out), visibility var(--dur-normal), color var(--dur-fast), background var(--dur-fast);
}
.current-week-goals-section:hover .btn-add-goal { opacity: 1; visibility: visible; }
.btn-add-goal:hover { color: var(--accent-text); background: var(--accent-soft); }
.btn-add-goal svg { display: block; }

.goal-new-input-wrap {
  margin-top: var(--space-sm);
}
.goal-new-input-wrap.hidden { display: none; }
.goal-new-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  box-sizing: border-box;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.goal-new-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.goals-list { display: flex; flex-direction: column; gap: var(--space-xs); }
.goals-empty { color: var(--text-muted); font-size: 13px; margin: 0; }

.goals-summary-block { margin-top: var(--space-md); padding-top: var(--space-md); border-top: 1px solid var(--border); }
.goals-summary-heads-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.goals-summary-heads-row .goals-summary-sep {
  color: var(--text-muted);
  font-size: 12px;
  user-select: none;
}
.goals-summary-month-inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.goals-summary-month-inline.visible-on-card-hover {
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-normal) var(--ease-out), visibility var(--dur-normal);
}
.current-week-goals-section:hover .goals-summary-month-inline.visible-on-card-hover {
  opacity: 1;
  visibility: visible;
}
.goals-summary-month-inline.hidden { display: none; }
.goals-summary-month-section.hidden { display: none; }
.goals-summary-month-section .goals-summary-head { margin-bottom: 0.35rem; }
.goals-summary-month-section .goals-summary-divider { margin: 0.75rem 0; }
.goals-summary-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.75rem 0;
}
.goals-summary-item { margin-top: 0.35rem; }
.goals-summary-item:empty { display: none; }
.goals-summary-head {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.goals-summary-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.goals-summary-text {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}
.goals-summary-text.hidden { display: none; }
.goals-summary-ul {
  margin: 0;
  padding-left: 1.25em;
  list-style-type: disc;
}
.goals-summary-ul li {
  margin-bottom: 0.35em;
  color: var(--text-muted);
  word-break: break-word;
}
.btn-summary-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 4px;
  font-size: 14px;
  line-height: 1;
  border-radius: var(--radius-sm);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-normal) var(--ease-out), visibility var(--dur-normal), color var(--dur-fast), background var(--dur-fast);
}
.btn-summary-icon svg { display: block; }
.goals-summary-head:hover .btn-summary-icon { opacity: 1; visibility: visible; }
.btn-summary-icon:hover { color: var(--accent-text); background: var(--accent-soft); }
.goal-summary-input-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.goal-summary-input-block.hidden { display: none; }
.goal-summary-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 14px;
  font-family: var(--font-sans);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  resize: vertical;
  min-height: 4em;
  box-sizing: border-box;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.goal-summary-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.goal-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.goal-item input[type="checkbox"] {
  flex-shrink: 0;
  width: 1.1em; height: 1.1em;
  cursor: pointer;
  accent-color: var(--text-secondary);
}
.goal-item input[type="checkbox"]:not(:checked) { opacity: 0.5; }
.goal-item input[type="checkbox"]:checked { accent-color: var(--accent); opacity: 1; }
.goal-item:has(.goal-text.not_done) input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  opacity: 1;
  border: none;
  border-radius: 3px;
  background: var(--error-bright);
}
.goal-item .goal-text { flex: 0 1 auto; min-width: 0; font-size: 14px; }
.goal-item .goal-text.done { text-decoration: line-through; color: var(--text-muted); }
.goal-item .goal-text.not_done { text-decoration: line-through; color: var(--error-bright); }
.goal-item .btn-goal-not-done,
.goal-item .btn-goal-delete {
  flex-shrink: 0;
  padding: 3px 5px;
  line-height: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-normal) var(--ease-out), visibility var(--dur-normal), color var(--dur-fast), background var(--dur-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.goal-item .btn-goal-not-done svg,
.goal-item .btn-goal-delete svg { display: block; }
.goal-item:hover .btn-goal-not-done,
.goal-item:hover .btn-goal-delete { opacity: 1; visibility: visible; }
.goal-item .btn-goal-not-done:hover { color: var(--error-bright); background: var(--error-soft); }
.goal-item .btn-goal-delete:hover { color: var(--text); background: var(--bg-hover); }

/* ==========================================================================
   Week Notes
   ========================================================================== */

.week-notes-section { margin-top: var(--space-xl); }
.week-notes-section h2 {
  margin: 0 0 var(--space-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.week-note-card {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--dur-normal);
}
.week-note-card:hover {
  border-color: var(--border-hover);
}
.week-note-card h3 {
  margin: 0 0 var(--space-md);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.week-note-card .week-summary-label,
.week-note-card .week-goals-label {
  display: block;
  margin: var(--space-sm) 0 var(--space-xs);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.week-note-card textarea {
  width: 100%;
  min-height: 50px;
  padding: 0.5rem 0.75rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  resize: vertical;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), box-shadow var(--dur-fast);
}
.week-note-card textarea:hover {
  border-color: var(--border-hover);
  background: var(--bg-card);
}
.week-note-card textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.week-note-card .week-goals-editor { margin-top: var(--space-xs); }
.week-goals-editor textarea { min-height: 60px; font-family: var(--font-sans); }

/* ==========================================================================
   View Switching
   ========================================================================== */

.view {
  animation: view-enter var(--dur-normal) var(--ease-out);
}
.view.view--hidden { display: none; }
@keyframes view-enter {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Settings
   ========================================================================== */

.settings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}
.settings-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  transition: border-color var(--dur-normal);
}
.settings-section:hover {
  border-color: var(--border-hover);
}
.settings-section h2 {
  margin: 0 0 var(--space-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.settings-fields { display: flex; flex-direction: column; gap: var(--space-md); }
.setting-row { display: flex; align-items: center; gap: var(--space-md); flex-wrap: wrap; }
.setting-row label {
  min-width: 180px;
  color: var(--text-secondary);
  font-size: 14px;
}
.settings-hint {
  margin: var(--space-md) 0 0;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* About section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.about-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.about-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.about-value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
}
.about-value--inline {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
}
.about-sep {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
  user-select: none;
  font-family: var(--font-sans);
}

/* ==========================================================================
   KPI Cards
   ========================================================================== */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: border-color var(--dur-normal);
}
.kpi-card:hover {
  border-color: var(--border-hover);
}

.kpi-card--accent {
  border-color: var(--border-accent);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(124, 106, 239, 0.04) 100%);
}
.kpi-card--accent:hover {
  border-color: var(--accent);
}

.kpi-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.2;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.kpi-delta--positive { color: var(--success); }
.kpi-delta--negative { color: var(--error); }
.kpi-delta--neutral  { color: var(--text-muted); }

/* Progress bar */
.kpi-progress {
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--space-sm);
}
.kpi-progress-bar {
  height: 100%;
  border-radius: 2px;
  background: var(--accent);
  transition: width var(--dur-slow) var(--ease-out);
  max-width: 100%;
}
.kpi-progress-bar.over-goal {
  background: var(--success);
}

/* ==========================================================================
   Dashboard
   ========================================================================== */

.dashboard-total-section { margin-bottom: var(--space-md); }
.dashboard-total { margin: 0; font-size: 14px; color: var(--text-muted); }
.dashboard-total strong {
  color: var(--accent-text);
  font-family: var(--font-mono);
}

.dashboard-section {
  margin-bottom: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur-normal);
}
.dashboard-section:hover {
  border-color: var(--border-hover);
}
.dashboard-section h2 {
  margin: 0 0 var(--space-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
}
.dashboard-period {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.chart-wrap {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  height: 260px;
  position: relative;
}
.chart-wrap canvas { max-height: 240px; }

/* ==========================================================================
   Card Elevation
   ========================================================================== */

.form-section,
.sessions-section,
.current-week-goals-section,
.week-note-card,
.settings-section,
.kpi-card,
.dashboard-section {
  box-shadow: var(--card-shadow);
  transition: border-color var(--dur-normal), box-shadow var(--dur-normal);
}

.form-section:hover,
.sessions-section:hover,
.current-week-goals-section:hover,
.week-note-card:hover,
.settings-section:hover,
.kpi-card:hover,
.dashboard-section:hover {
  border-color: var(--border-hover);
  box-shadow: var(--card-shadow-hover);
}

.kpi-card--accent:hover {
  border-color: var(--accent);
}
/* ==========================================================================
   Chart Tooltip
   ========================================================================== */

.chart-tooltip {
  position: fixed;
  z-index: 1001;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 13px;
  pointer-events: none;
  box-shadow: var(--shadow-lg);
  max-width: 250px;
  opacity: 1;
  visibility: visible;
  transition: opacity var(--dur-normal) var(--ease-out), visibility var(--dur-normal), left var(--dur-fast), top var(--dur-fast);
}
.chart-tooltip.hidden { opacity: 0; visibility: hidden; }
.chart-tooltip-title {
  color: #fff;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: -0.01em;
}
.chart-tooltip-body { color: var(--text-secondary); line-height: 1.6; }
.chart-tooltip-dev--pos { color: var(--success); font-weight: 600; }
.chart-tooltip-dev--neg { color: var(--error); font-weight: 600; }
.chart-tooltip-badge {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
}
.chart-tooltip-badge--below { background: var(--error); }
.chart-tooltip-badge--ok { background: var(--accent); }

/* ==========================================================================
   Toast / Snackbar
   ========================================================================== */

.toast {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%) translateY(0);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0.75rem 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  font-size: 13px;
  animation: toast-enter var(--dur-slow) var(--ease-out);
}
@keyframes toast-enter {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.toast-timer {
  position: relative;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.toast-timer.hidden { display: none; }
.toast-timer-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.toast-timer-track {
  fill: none;
  stroke: var(--border);
  stroke-width: 2.5;
}
.toast-timer-ring {
  fill: none;
  stroke: var(--accent-text);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 100.53;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear;
}
.toast-timer-count {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}

.toast-undo {
  background: transparent;
  border: none;
  color: var(--accent-text);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast);
}
.toast.hidden { display: none; }
.toast-undo:hover { background: var(--accent-soft); }