/* ============================================================================
   BeanBrew AI v1.1 - Specialty Coffee PWA Stylesheet (iOS & Android)
   ============================================================================ */

:root {
  --bg: #FFFBF7;
  --surface: #FFFBF7;
  --surface-low: #FBF3EE;
  --surface-container: #F7EEE7;
  --surface-high: #F2E7DF;
  --primary: #6F4E37;
  --on-primary: #FFFFFF;
  --primary-container: #F3DFCF;
  --on-primary-container: #2B1A0E;
  --secondary: #8D6E63;
  --secondary-container: #EFE0D6;
  --on-secondary-container: #30201A;
  --tertiary: #3A6B49;
  --tertiary-container: #D3EBD8;
  --on-tertiary-container: #0E2A17;
  --error: #B3261E;
  --error-container: #F9DEDC;
  --on-error-container: #410E0B;
  --text: #221914;
  --text-muted: #6B5B52;
  --border: #E2D3C8;
  --accent-gold: #D9822B;
  --shadow: 0 2px 10px rgba(59, 35, 20, 0.07);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18120F;
    --surface: #18120F;
    --surface-low: #211915;
    --surface-container: #281E1A;
    --surface-high: #342822;
    --primary: #E5B892;
    --on-primary: #3E2414;
    --primary-container: #5A3B25;
    --on-primary-container: #F6E4D6;
    --secondary: #D7BFB0;
    --secondary-container: #4A3A31;
    --on-secondary-container: #F3E2D8;
    --tertiary: #9CCFA8;
    --tertiary-container: #254430;
    --on-tertiary-container: #D3EBD8;
    --error: #F2B8B5;
    --error-container: #601410;
    --on-error-container: #F9DEDC;
    --text: #F5EAE2;
    --text-muted: #B8A59A;
    --border: #463730;
    --accent-gold: #FFD180;
    --shadow: 0 3px 14px rgba(0, 0, 0, 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: -apple-system, BlinkMacSystemFont, "PingFang HK", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  line-height: 1.5;
  min-height: 100dvh;
  overscroll-behavior-y: none;
}

.app-shell {
  max-width: 680px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-bottom: calc(74px + env(safe-area-inset-bottom, 0px));
}

/* Top App Bar */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: calc(10px + env(safe-area-inset-top, 0px)) 16px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.top-bar-title {
  font-size: 1.2rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.version-pill {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Content container */
.main-content {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Cards */
.card {
  background: var(--surface-container);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}

.card-primary {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.card-tertiary {
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
}

.card-error {
  background: var(--error-container);
  color: var(--on-error-container);
}

.card-low {
  background: var(--surface-low);
}

/* Typography & Section titles */
.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 8px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.headline {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0;
}

.subtext {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 0.96rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s ease, opacity 0.15s ease;
  font-family: inherit;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn-tonal {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.btn-tertiary {
  background: var(--tertiary);
  color: #FFFFFF;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-text {
  background: transparent;
  color: var(--primary);
  padding: 8px 12px;
}

.btn-danger {
  background: var(--error-container);
  color: var(--on-error-container);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  min-height: 52px;
  font-size: 1.02rem;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.15rem;
}

.icon-btn:hover {
  background: var(--surface-high);
}

/* Inputs & Forms */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 10px;
}

.field-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.input, .textarea, .select {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.96rem;
  font-family: inherit;
  outline: none;
}

.input:focus, .textarea:focus, .select:focus {
  border-color: var(--primary);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

@media (max-width: 400px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Chips */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.chip-scroll::-webkit-scrollbar {
  display: none;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  background: var(--surface-high);
  color: var(--text);
  border: 1.5px solid var(--border);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}

.chip.selected {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.info-chip {
  display: inline-block;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--surface-high);
  color: var(--text);
  border: 1px solid var(--border);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: 5px;
}

.badge-resting {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

.badge-peak {
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
}

.badge-past {
  background: var(--error-container);
  color: var(--on-error-container);
}

/* Bean Row in Library */
.bean-item {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: transform 0.12s ease;
}

.bean-item:active {
  transform: scale(0.99);
}

.bean-thumb {
  width: 76px;
  height: 76px;
  border-radius: 14px;
  object-fit: cover;
  background: var(--primary-container);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.photo-banner {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Parameter Cells */
.param-cell {
  background: var(--surface-high);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.param-label {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.param-value {
  font-size: 1.04rem;
  font-weight: 800;
  margin-top: 2px;
  word-break: break-word;
}

/* Gemini Analysis Breakdown Box */
.analysis-box {
  background: color-mix(in srgb, var(--primary-container) 55%, var(--surface));
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.analysis-item-title {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 3px;
}

.analysis-item-body {
  font-size: 0.9rem;
  margin: 0;
}

/* Steps Timeline */
.step-row {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.step-row:last-child {
  border-bottom: none;
}

.step-time {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 800;
  color: var(--primary);
  min-width: 54px;
  font-size: 0.95rem;
}

/* Timer Display */
.timer-digits {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 4.6rem;
  font-weight: 800;
  text-align: center;
  color: var(--primary);
  line-height: 1.05;
  margin: 8px 0;
}

.progress-track {
  width: 100%;
  height: 10px;
  background: var(--surface-high);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  transition: width 0.15s linear;
}

/* Bottom Navigation Bar */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--surface-container) 94%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.bottom-nav-inner {
  max-width: 680px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 64px;
}

.nav-item {
  background: none;
  border: none;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.nav-item .nav-icon {
  font-size: 1.25rem;
  padding: 2px 14px;
  border-radius: 999px;
  transition: background 0.15s ease;
}

.nav-item.active {
  color: var(--primary);
  font-weight: 800;
}

.nav-item.active .nav-icon {
  background: var(--primary-container);
}

/* Spinner */
.spinner {
  width: 22px;
  height: 22px;
  border: 3px solid color-mix(in srgb, currentColor 30%, transparent);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Star Rating */
.star-btn {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
}

/* Modal / Toast */
.toast {
  position: fixed;
  bottom: calc(82px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  background: #2B1A0E;
  color: #FFFFFF;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  z-index: 100;
  max-width: 90vw;
  text-align: center;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 8px 0;
}

.flow-step {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px;
  background: var(--surface-low);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.flow-num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}