/* YouSolar Monitoring Dashboard - Base Styles */

/* ============================================
   RESET & DEFAULTS
   ============================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); }
h6 { font-size: var(--text-sm); }

p {
  margin-bottom: var(--space-4);
}

a {
  color: var(--yousolar-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--yousolar-red-dark);
}

/* Monospace for data values */
.mono, .metric-value, [data-value] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: 1;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button - YouSolar Red */
.btn-primary {
  background-color: var(--yousolar-red);
  color: var(--white);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--yousolar-red-dark);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--border-color);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

/* Clickable Card */
.card-clickable {
  cursor: pointer;
}

.card-clickable:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

input, select, textarea {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--yousolar-red);
  box-shadow: 0 0 0 3px var(--yousolar-red-alpha-20);
}

label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

/* ============================================
   STATUS INDICATORS
   ============================================ */

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  display: inline-block;
  flex-shrink: 0;
}

.status-dot.online {
  background-color: var(--status-online);
  box-shadow: 0 0 0 3px var(--status-online-bg);
  animation: pulse-online 2s infinite;
}

.status-dot.warning {
  background-color: var(--status-warning);
  box-shadow: 0 0 0 3px var(--status-warning-bg);
  animation: pulse-warning 1.5s infinite;
}

.status-dot.error {
  background-color: var(--status-error);
  box-shadow: 0 0 0 3px var(--status-error-bg);
  animation: pulse-error 1s infinite;
}

.status-dot.offline {
  background-color: var(--status-offline);
  box-shadow: 0 0 0 3px var(--status-offline-bg);
}

@keyframes pulse-online {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

@keyframes pulse-warning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes pulse-error {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.online {
  background-color: var(--status-online-bg);
  color: var(--status-online);
}

.status-badge.warning {
  background-color: var(--status-warning-bg);
  color: var(--status-warning);
}

.status-badge.error {
  background-color: var(--status-error-bg);
  color: var(--status-error);
}

.status-badge.offline {
  background-color: var(--status-offline-bg);
  color: var(--status-offline);
}

/* ============================================
   PROGRESS BAR (Battery)
   ============================================ */

.battery-bar {
  width: 100%;
  height: 24px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}

.battery-fill {
  height: 100%;
  border-radius: var(--radius-md);
  transition: width 0.5s ease, background-color 0.3s ease;
  position: relative;
}

.battery-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,0.2) 50%,
    transparent 100%
  );
}

.battery-fill[data-level="full"] {
  background: linear-gradient(90deg, var(--battery-full), #4ade80);
}

.battery-fill[data-level="good"] {
  background: linear-gradient(90deg, var(--battery-good), #a3e635);
}

.battery-fill[data-level="medium"] {
  background: linear-gradient(90deg, var(--battery-medium), #fbbf24);
}

.battery-fill[data-level="low"] {
  background: linear-gradient(90deg, var(--battery-low), #fb923c);
}

.battery-fill[data-level="critical"] {
  background: linear-gradient(90deg, var(--battery-critical), #f87171);
  animation: pulse-critical 1s infinite;
}

@keyframes pulse-critical {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.battery-text {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  text-shadow: 0 1px 2px rgba(255,255,255,0.5);
}

/* ============================================
   TOOLTIPS
   ============================================ */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  padding: var(--space-2) var(--space-3);
  background-color: var(--gray-900);
  color: var(--white);
  font-size: var(--text-xs);
  white-space: nowrap;
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-red { color: var(--yousolar-red); }
.text-success { color: var(--status-online); }
.text-warning { color: var(--status-warning); }
.text-error { color: var(--status-error); }

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

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}