@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;600;700&display=swap');

:root {
  --bg-primary: #090d16;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.5);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  
  --primary: #0284c7;
  --primary-glow: rgba(2, 132, 199, 0.35);
  --primary-light: #38bdf8;
  --accent: #f59e0b;
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.3);
  --danger: #ef4444;
  --warning: #f59e0b;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --glass: blur(16px);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.18) 0%, rgba(0, 0, 0, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.app-container {
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
  padding-bottom: 80px;
}

.app-header {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: var(--glass);
  background: rgba(9, 13, 22, 0.85);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--primary-glow);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
  fill: #ffffff;
}

.logo-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text span {
  font-size: 0.75rem;
  color: var(--primary-light);
  font-weight: 500;
  display: block;
}

.header-status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.main-view {
  padding: 16px;
  flex: 1;
  display: none;
  animation: fadeIn 0.25s ease-out;
}

.main-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-card {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.85));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--glass);
}

.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0284c7, #38bdf8, #10b981);
}

.hero-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 6px;
}

.hero-value-container {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}

.hero-digits {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.3rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.hero-unit {
  font-size: 1.1rem;
  color: var(--primary-light);
  font-weight: 600;
}

.hero-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-badge {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 500;
}

.scanner-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  backdrop-filter: var(--glass);
}

.viewfinder-wrapper {
  width: 100%;
  aspect-ratio: 4/3;
  background: #000000;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

#camera-stream, #captured-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}

.camera-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-faint);
  text-align: center;
  padding: 20px;
}

.camera-placeholder svg {
  width: 48px;
  height: 48px;
  stroke: var(--text-faint);
}

.hud-frame {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 85%;
  height: 55%;
  border: 2px dashed rgba(56, 189, 248, 0.7);
  border-radius: 12px;
  pointer-events: none;
  display: none;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.35);
}

.hud-frame::before {
  content: 'WYKRYWANIE LICZNIKA';
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 4px;
}

.scan-laser {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #38bdf8, transparent);
  box-shadow: 0 0 8px #38bdf8;
  animation: scanLaser 2.2s infinite ease-in-out;
  display: none;
}

@keyframes scanLaser {
  0% { top: 0%; opacity: 0.2; }
  50% { top: 100%; opacity: 1; }
  100% { top: 0%; opacity: 0.2; }
}

.camera-controls {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: 16px;
}

.camera-controls > button,
.camera-controls > label {
  flex: 1 1 0;
  min-height: 48px;
  box-sizing: border-box;
  margin: 0;
  padding: 10px 12px;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
}

.history-sync-bar {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-bottom: 14px;
}

.history-sync-bar > button {
  flex: 1 1 0;
  min-height: 44px;
  box-sizing: border-box;
  margin: 0;
  padding: 8px 6px;
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-secondary {
  background: rgba(30, 41, 59, 0.9);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:active {
  background: rgba(51, 65, 85, 0.9);
  transform: scale(0.97);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--success-glow);
}

.btn-icon-only {
  padding: 12px;
  flex: 0 0 auto;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Analytics & Forecast Dashboard */
.kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  backdrop-filter: var(--glass);
  position: relative;
  overflow: hidden;
}

.kpi-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.kpi-card.accent::after { background: var(--accent); }
.kpi-card.success::after { background: var(--success); }
.kpi-card.purple::after { background: #a855f7; }

.kpi-title {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  margin-bottom: 4px;
}

.kpi-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
}

.kpi-sub {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 2px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 16px;
  backdrop-filter: var(--glass);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.chart-header h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: #ffffff;
}

.chart-badge {
  font-size: 0.7rem;
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 600;
}

.chart-range-filters {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2px;
  gap: 2px;
}

.range-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.range-btn:hover {
  color: #ffffff;
}

.range-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

.season-insight-box {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.6), rgba(15, 23, 42, 0.8));
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-top: 12px;
  font-size: 0.8rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.season-insight-box strong {
  color: #fbbf24;
}

.records-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.record-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.record-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.record-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

.record-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.record-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.record-consumption {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  color: #34d399;
  background: rgba(16, 185, 129, 0.12);
  padding: 2px 6px;
  border-radius: 6px;
}

.record-daily-rate {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 2px 6px;
  border-radius: 6px;
  white-space: nowrap;
}

.record-period-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
}

.sync-tag {
  font-size: 0.7rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.sync-tag.synced {
  color: #10b981;
}

.sync-tag.pending {
  color: #f59e0b;
}

.btn-delete-item {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #ef4444;
  padding: 6px 8px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-delete-item:active {
  background: rgba(239, 68, 68, 0.3);
  transform: scale(0.92);
}

.settings-group {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 16px;
}

.settings-group h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  color: #ffffff;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus {
  border-color: #38bdf8;
  box-shadow: 0 0 0 2px var(--primary-glow);
}

.form-help {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 4px;
  line-height: 1.3;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #111827;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  width: 100%;
  max-width: 440px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 22px 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  transform: scale(0.92) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
}

.modal-backdrop.show .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.reading-result-box {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  text-align: center;
}

.reading-input-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 10px 0;
}

.reading-numeric-input {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: #38bdf8;
  background: transparent;
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: 8px;
  padding: 6px 12px;
  text-align: center;
  max-width: 220px;
  outline: none;
}

.stepper-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--border-color);
  color: #ffffff;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.stepper-btn:active {
  background: rgba(56, 189, 248, 0.2);
}

.modal-photo-preview {
  width: 100%;
  max-height: 180px;
  object-fit: contain;
  background: #000;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  max-width: 480px;
  width: 100%;
  height: 64px;
  background: rgba(9, 13, 22, 0.92);
  backdrop-filter: var(--glass);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 100;
  padding: 0 10px;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  color: var(--text-faint);
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 12px;
  transition: all 0.15s ease;
}

.nav-item svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

.nav-item.active {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
}

.toast-container {
  position: fixed;
  top: 75px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  width: 90%;
  max-width: 420px;
  pointer-events: none;
}

.toast {
  background: #1e293b;
  color: #ffffff;
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

.toast.success {
  border-color: rgba(16, 185, 129, 0.4);
  background: #064e3b;
}

.toast.error {
  border-color: rgba(239, 68, 68, 0.4);
  background: #7f1d1d;
}

.toast.warning {
  border-color: rgba(245, 158, 11, 0.4);
  background: #78350f;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(6px);
  z-index: 1500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  display: none;
}

.loading-overlay.show {
  display: flex;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(56, 189, 248, 0.2);
  border-top-color: #38bdf8;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.code-box {
  background: #090d16;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: #cbd5e1;
  max-height: 150px;
  overflow-y: auto;
  white-space: pre-wrap;
  margin-top: 8px;
}