/* Modern E-Ink Theme System */
:root {
  --bg-paper: #f6f6f2;       /* Warm paper white */
  --bg-card: #ffffff;        /* Pure white for widgets */
  --ink-dark: #121212;       /* Deep charcoal ink */
  --ink-gray-dark: #40403d;  /* Dark gray ink */
  --ink-gray-medium: #808078;/* Medium gray ink */
  --ink-gray-light: #d6d6ce; /* Light gray border */
  --border-width: 2px;
  --font-main: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Base resets & styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-paper);
  color: var(--ink-dark);
  min-height: 100vh;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 20px;
  overflow-x: hidden;
  /* Retro E-Ink dot grid background */
  background-image: radial-gradient(var(--ink-gray-light) 1.5px, transparent 1.5px);
  background-size: 20px 20px;
}

/* Subtle paper texture overlay */
.paper-grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.04;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.app-container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

/* Shared Card Component */
.card {
  background-color: var(--bg-card);
  border: var(--border-width) solid var(--ink-dark);
  padding: 20px;
  margin-bottom: 20px;
  position: relative;
  /* 2D Flat Hard shadow */
  box-shadow: 4px 4px 0px 0px var(--ink-dark);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.card:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0px 0px var(--ink-dark);
}

.hidden {
  display: none !important;
}

.mono {
  font-family: var(--font-mono);
  font-weight: bold;
}

/* --- Login Screen --- */
.login-card {
  max-width: 420px;
  margin: 100px auto 0 auto;
  padding: 40px 30px;
  text-align: center;
}

.eink-brand {
  margin-bottom: 30px;
}

.eink-brand h1 {
  font-size: 2rem;
  letter-spacing: 2px;
  font-weight: 700;
  border-bottom: 4px double var(--ink-dark);
  padding-bottom: 10px;
  display: inline-block;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 0.75rem;
  color: var(--ink-gray-dark);
  font-weight: 600;
  letter-spacing: 1px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 6px;
  color: var(--ink-dark);
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  border: var(--border-width) solid var(--ink-dark);
  background-color: var(--bg-card);
  color: var(--ink-dark);
  outline: none;
  transition: background-color 0.2s;
}

.form-group input:focus {
  background-color: var(--bg-paper);
  border-style: dashed;
}

.error-msg {
  color: #000;
  font-size: 0.85rem;
  font-weight: bold;
  border: 1px solid #000;
  background: #fff;
  padding: 8px;
  margin-bottom: 20px;
  border-left: 5px solid #000;
  text-align: left;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1px;
  padding: 10px 20px;
  border: var(--border-width) solid var(--ink-dark);
  background-color: var(--bg-card);
  color: var(--ink-dark);
  cursor: pointer;
  outline: none;
  transition: all 0.15s ease;
  user-select: none;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-primary {
  background-color: var(--ink-dark);
  color: var(--bg-card);
}

.btn-primary:hover {
  background-color: var(--bg-card);
  color: var(--ink-dark);
}

.btn-outline {
  background-color: transparent;
}

.btn-outline:hover {
  background-color: var(--ink-dark);
  color: var(--bg-card);
}

.btn-xs {
  font-size: 0.7rem;
  padding: 4px 8px;
  font-weight: 600;
}

.login-footer {
  margin-top: 25px;
  font-size: 0.8rem;
  color: var(--ink-gray-dark);
}

/* --- Dashboard Header --- */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 4px double var(--ink-dark);
  padding-bottom: 12px;
  margin-bottom: 25px;
}

.header-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-title h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border: 1px solid var(--ink-dark);
  background-color: var(--ink-dark);
  color: var(--bg-card);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 0.9rem;
}

/* --- Dashboard Grid --- */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

.col-span-3 {
  grid-column: span 3;
}

/* Widget labels & structure */
.widget-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--ink-gray-dark);
  margin-bottom: 10px;
  border-bottom: 1px solid var(--ink-gray-light);
  padding-bottom: 4px;
}

/* Widget Temp */
.widget-temp {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.temp-display {
  display: flex;
  align-items: baseline;
  padding: 15px 0;
}

.temp-display #current-temp {
  font-size: 4rem;
  line-height: 1;
  font-weight: 700;
}

.temp-unit {
  font-size: 2rem;
  font-weight: 600;
  margin-left: 5px;
}

.widget-footer {
  font-size: 0.75rem;
  color: var(--ink-gray-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--ink-gray-light);
  padding-top: 8px;
  margin-top: 10px;
}

.time-elapsed {
  color: var(--ink-gray-medium);
}

/* Widget Status */
.widget-status {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.status-row {
  display: flex;
  gap: 20px;
  margin-bottom: 15px;
}

.status-item {
  flex: 1;
}

.status-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 5px;
}

.stove-alert-box {
  padding: 12px;
  border: 1px dashed var(--ink-dark);
  background-color: var(--bg-paper);
  font-size: 0.85rem;
  line-height: 1.4;
  text-align: center;
}

.stove-alert-box.alert-hot {
  border: 2px solid var(--ink-dark);
  background-color: var(--ink-gray-light);
}

/* Widget Chart */
.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  border-bottom: 1px solid var(--ink-gray-light);
  padding-bottom: 6px;
}

.chart-header .widget-label {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.chart-filters {
  display: flex;
  gap: 5px;
}

.btn-filter {
  font-size: 0.7rem;
  padding: 4px 8px;
  font-weight: 600;
  border-color: var(--ink-dark);
}

.btn-filter.active {
  background-color: var(--ink-dark);
  color: var(--bg-card);
}

.chart-wrapper {
  position: relative;
  height: 250px;
  width: 100%;
}

/* Widget Weather */
.weather-display {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 0;
}

.weather-icon {
  width: 50px;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.weather-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--ink-dark);
  fill: none;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.weather-info {
  display: flex;
  flex-direction: column;
}

.weather-info #weather-temp {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
}

.weather-text {
  font-size: 0.8rem;
  color: var(--ink-gray-dark);
  font-weight: 600;
  margin-top: 4px;
}

/* Widget Settings */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 10px;
}

.settings-column {
  display: flex;
  flex-direction: column;
}

.settings-column h3 {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 15px;
  border-bottom: 2px solid var(--ink-dark);
  padding-bottom: 4px;
}

.settings-description {
  font-size: 0.8rem;
  color: var(--ink-gray-dark);
  line-height: 1.4;
  margin-bottom: 15px;
}

.info-block {
  background-color: var(--bg-paper);
  border: 1px solid var(--ink-dark);
  padding: 10px;
  margin-bottom: 12px;
}

.info-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--ink-gray-dark);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.key-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.key-container code {
  font-size: 0.8rem;
  word-break: break-all;
  user-select: all;
  background: white;
  padding: 4px;
  border: 1px solid var(--ink-gray-light);
  flex: 1;
}

.url-list code {
  font-size: 0.75rem;
  background: white;
  padding: 2px 4px;
  border: 1px solid var(--ink-gray-light);
  display: inline-block;
  margin: 3px 0;
  width: 100%;
  overflow-x: auto;
  white-space: nowrap;
}

.endpoint-desc {
  font-size: 0.7rem;
  color: var(--ink-gray-medium);
  display: block;
  margin-bottom: 6px;
}

.msg {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 8px;
  margin-bottom: 15px;
  border: 1px solid var(--ink-dark);
}

.msg.success {
  background-color: var(--bg-paper);
  border-left: 5px solid var(--ink-dark);
}

.msg.error {
  background-color: #fff;
  border-left: 5px dashed var(--ink-dark);
}

/* --- Footer --- */
.dashboard-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 30px;
  padding-top: 15px;
  border-top: 1px solid var(--ink-dark);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--ink-gray-medium);
  letter-spacing: 1px;
}

/* Utility to select text on click */
.select-all {
  user-select: all;
}

/* Responsive adjustment */
@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  .col-span-3 {
    grid-column: span 1;
  }
  .settings-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .header-meta {
    width: 100%;
    justify-content: space-between;
  }
}