/* ============================================================
   1. Custom properties + base reset
   ============================================================ */
:root {
  --bg:             #1a1a2e;
  --surface:        #16213e;
  --surface-2:      #0f3460;
  --accent-plus:    #e94560;
  --accent-minus:   #4a9eff;
  --btn-reset-bg:   #2a2a4a;
  --text-primary:   #eaeaea;
  --text-secondary: #8888aa;
  --text-disabled:  #44445a;
  --border:         #2a2a5a;
  --tap-target:     64px;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.4;
}

/* ============================================================
   2. App shell
   ============================================================ */
.app-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100dvh;
  padding-block-end: 2rem;
}

/* ============================================================
   3. Header
   ============================================================ */
.app-header {
  width: 100%;
  max-width: 600px;
  padding: 1rem 1.25rem 0;
  position: relative;
}

.app-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  text-transform: uppercase;
  text-align: center;
}

.btn-info {
  position: absolute;
  top: 50%;
  right: 1.25rem;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.75rem;
  min-width: 44px;
  min-height: 44px;
  border-radius: 50%;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.15s;
}

.btn-info:hover {
  color: var(--text-primary);
}

.btn-info:focus-visible {
  outline: 3px solid var(--accent-plus);
  outline-offset: 3px;
}

/* Info dialog */
.info-dialog {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  width: min(90vw, 360px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.info-dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
}

.info-dialog__title {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: center;
}

.info-dialog__version {
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-align: center;
}

.info-dialog__release {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  color: var(--text-disabled);
  text-align: center;
}

.btn-info-close {
  width: 100%;
  padding: 0.75rem;
  background: var(--btn-reset-bg);
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ============================================================
   4. Main content
   ============================================================ */
.app-main {
  width: 100%;
  max-width: 600px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ============================================================
   5. Counter section
   ============================================================ */
.counter-section {
  text-align: center;
}

.session-start {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.counter-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.counter-value {
  font-size: clamp(5rem, 20vw, 8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
}

.counter-label {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* ============================================================
   6. Controls section
   ============================================================ */
.controls-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-row {
  display: flex;
  gap: 0.75rem;
}

.btn-row--primary {
  justify-content: center;
}

.btn-row--secondary {
  justify-content: center;
}

/* Base button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 12px;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.15s, transform 0.1s;
}

.btn:active {
  transform: scale(0.96);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.btn:focus-visible {
  outline: 3px solid var(--accent-plus);
  outline-offset: 3px;
}

/* Drink buttons */
.btn-row--drinks {
  justify-content: center;
  gap: 1rem;
}

.drink-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid transparent;
  border-radius: 16px;
  background: var(--surface);
  cursor: pointer;
  padding: 0.5rem;
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.1s, border-color 0.15s;
}

.drink-btn:active {
  transform: scale(0.93);
}

.drink-btn:focus-visible {
  outline: 3px solid var(--accent-plus);
  outline-offset: 3px;
}

.drink-btn__img {
  width: 64px;
  height: 64px;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  pointer-events: none;
}

/* Storno */
.btn-minus {
  flex: 1;
  padding: 0.75rem 1.5rem;
  background: var(--accent-minus);
  color: #fff;
}

.btn-minus:disabled {
  background: var(--btn-reset-bg);
  color: var(--text-disabled);
}

/* Reset */
.btn-reset {
  flex: 1;
  padding: 0.75rem 1.5rem;
  background: var(--btn-reset-bg);
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ============================================================
   7. Chart section
   ============================================================ */
.chart-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chart-section[hidden] {
  display: none;
}

.chart-title {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.duration-chart {
  width: 100%;
  height: auto;
  display: block;
  background: var(--surface);
  border-radius: 12px;
}

/* ============================================================
   8. Log section
   ============================================================ */
.log-section {
  overflow-x: auto;
}

.log-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: auto;
  font-size: 0.9rem;
}

.col-drink {
  width: 3rem;
  text-align: center;
}

.log-drink-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  vertical-align: middle;
}

.log-table th {
  padding: 0.5rem 0.75rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.log-table td {
  padding: 0.625rem 0.75rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.log-table tbody tr:nth-child(odd) {
  background: var(--surface);
}

.log-table tbody tr:first-child {
  background: var(--surface-2);
}

.log-table tbody:empty::after {
  content: "Žádné záznamy";
  display: block;
  padding: 1.25rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ============================================================
   9. Landscape on small screens
   ============================================================ */
@media (orientation: landscape) and (max-height: 500px) {
  .app-main {
    gap: 1rem;
    padding-block: 0.5rem;
  }

  .counter-value {
    font-size: clamp(3rem, 12vh, 5rem);
  }

  .app-header {
    padding-block-start: 0.5rem;
  }
}

/* ============================================================
   10. Desktop
   ============================================================ */
@media (min-width: 1024px) {
  .app-header,
  .app-main {
    padding-inline: 2rem;
  }

  .app-main {
    gap: 2.5rem;
  }

  .counter-value {
    font-size: 8rem;
  }
}