/* ==========================================================================
   RemotePulse Mobile PWA — Design System & Layout
   Optimized for Google Pixel 9 (412px viewport) & Modern Touch Devices
   ========================================================================== */

/* --- CSS Variables: Default Dark Mode --- */
:root {
  --bg-color: #0b1120;
  --bg-gradient: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.08) 0%, rgba(11, 17, 32, 0) 70%);
  --panel-bg: rgba(30, 41, 59, 0.75);
  --panel-border: rgba(255, 255, 255, 0.10);
  --panel-border-active: rgba(56, 189, 248, 0.5);
  --card-bg-subtle: rgba(15, 23, 42, 0.55);
  --accent-color: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.35);
  --accent-purple: #c084fc;
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --input-bg: rgba(15, 23, 42, 0.7);
  --input-border: rgba(255, 255, 255, 0.14);
  --input-border-focus: #38bdf8;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --console-bg: #030712;
  --console-text: #4ade80;
  --console-border: rgba(74, 222, 128, 0.2);
  --success-bg: rgba(52, 211, 153, 0.15);
  --success-color: #34d399;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --warning-color: #f59e0b;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --danger-color: #ef4444;
  --danger-border: rgba(239, 68, 68, 0.35);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --touch-target: 44px;
}

/* --- Light Mode Overrides --- */
[data-theme="light"] {
  --bg-color: #f1f5f9;
  --bg-gradient: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.08) 0%, rgba(241, 245, 249, 0) 70%);
  --panel-bg: rgba(255, 255, 255, 0.95);
  --panel-border: rgba(203, 213, 225, 0.9);
  --panel-border-active: rgba(2, 132, 199, 0.6);
  --card-bg-subtle: rgba(248, 250, 252, 0.9);
  --accent-color: #0284c7;
  --accent-glow: rgba(2, 132, 199, 0.25);
  --accent-purple: #7e22ce;
  --text-color: #0f172a;
  --text-muted: #64748b;
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --input-border-focus: #0284c7;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
  --console-bg: #0f172a;
  --console-text: #4ade80;
  --console-border: rgba(74, 222, 128, 0.3);
  --success-bg: rgba(5, 150, 105, 0.12);
  --success-color: #059669;
  --warning-bg: rgba(217, 119, 6, 0.12);
  --warning-color: #d97706;
  --danger-bg: rgba(220, 38, 38, 0.12);
  --danger-color: #dc2626;
  --danger-border: rgba(220, 38, 38, 0.3);
}

/* Auto System Light Mode when no explicit override */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg-color: #f1f5f9;
    --bg-gradient: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.08) 0%, rgba(241, 245, 249, 0) 70%);
    --panel-bg: rgba(255, 255, 255, 0.95);
    --panel-border: rgba(203, 213, 225, 0.9);
    --panel-border-active: rgba(2, 132, 199, 0.6);
    --card-bg-subtle: rgba(248, 250, 252, 0.9);
    --accent-color: #0284c7;
    --accent-glow: rgba(2, 132, 199, 0.25);
    --accent-purple: #7e22ce;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-border-focus: #0284c7;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --console-bg: #0f172a;
    --console-text: #4ade80;
    --console-border: rgba(74, 222, 128, 0.3);
    --success-bg: rgba(5, 150, 105, 0.12);
    --success-color: #059669;
    --warning-bg: rgba(217, 119, 6, 0.12);
    --warning-color: #d97706;
    --danger-bg: rgba(220, 38, 38, 0.12);
    --danger-color: #dc2626;
    --danger-border: rgba(220, 38, 38, 0.3);
  }
}

/* --- Base & Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-color);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  /* Safe-area padding for notch/punch hole and bottom gesture pill */
  padding-top: max(12px, env(safe-area-inset-top, 0px));
  padding-bottom: max(20px, env(safe-area-inset-bottom, 0px));
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* --- Layout Containers --- */
.app-container, header, main, .page-wrapper {
  width: 100%;
  max-width: 440px; /* Optimized container for 412px Pixel 9 screen */
  margin: 0 auto;
}

header {
  padding: 12px 4px 16px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.header-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.header-brand-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 242, 254, 0.25);
}

.header-brand h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.header-subtitle {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 400;
  margin: 2px 0 0 0;
  line-height: 1.3;
}

.theme-toggle-btn {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-color);
  min-width: var(--touch-target);
  min-height: var(--touch-target);
  padding: 8px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-btn:active {
  transform: scale(0.95);
}

main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 0 4px;
}

/* --- Panel & Card Components --- */
.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--card-shadow);
  transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  width: 100%;
}

.panel-title {
  margin: 0 0 14px 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-color);
  flex-shrink: 0;
}

/* --- Paired Client Card --- */
.client-card {
  background: var(--card-bg-subtle);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--panel-border);
  transition: all 0.2s ease;
}

.client-card.active {
  border-color: var(--panel-border-active);
  background: rgba(56, 189, 248, 0.08);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
}

.client-card-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.client-info {
  flex: 1;
  min-width: 0;
}

.client-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--text-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.client-active-indicator {
  color: var(--accent-color);
  font-weight: 800;
}

.client-status-text {
  font-size: 11px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 2px;
}

.client-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  align-items: center;
}

.client-rename-row {
  display: flex;
  gap: 8px;
  align-items: center;
  width: 100%;
}

/* --- Form Elements & Touch Targets --- */
.form-group {
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

input, textarea, select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text-color);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  min-height: var(--touch-target);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px 16px;
  padding-right: 36px;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--input-border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea {
  min-height: 120px;
  font-family: 'Consolas', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
}

/* --- Buttons & Touch Controls --- */
button {
  background: linear-gradient(135deg, var(--accent-color), #3b82f6);
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #ffffff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.2px;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.15s ease;
  user-select: none;
}

button:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 16px var(--accent-glow);
}

button:active {
  transform: scale(0.98);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  filter: none;
  box-shadow: none;
}

.secondary-btn {
  background: var(--input-bg);
  color: var(--text-color);
  border: 1px solid var(--input-border);
  box-shadow: none;
}

.secondary-btn:hover {
  border-color: var(--accent-color);
  box-shadow: none;
  filter: none;
}

.btn-small {
  min-height: 38px;
  padding: 8px 12px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-danger {
  border-color: var(--danger-border);
  color: var(--danger-color);
  background: var(--danger-bg);
}

.btn-danger:hover {
  border-color: var(--danger-color);
}

/* --- Status Indicators --- */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
}

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

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

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

.status-badge.unknown {
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-muted);
}

/* Shape-based status dots (accessible for color deficiency) */
.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  box-sizing: border-box;
}

.status-dot.online {
  background: var(--success-color);
  box-shadow: 0 0 6px var(--success-color);
}

.status-dot.degraded {
  background: var(--warning-color);
  border-radius: 0;
  width: 11px;
  height: 10px;
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
  box-shadow: none;
}

.status-dot.offline {
  background: transparent;
  border: 2px solid var(--danger-color);
}

.status-dot.unknown {
  background: transparent;
  border: 2px dashed var(--text-muted);
}

/* App -> Hub -> Worker connectivity chain */
.conn-chain {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--panel-border);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
}

.conn-chain .conn-node {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.conn-chain .conn-link {
  flex: 1;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--panel-border) 0 6px, transparent 6px 10px);
}

.conn-chain-caption {
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-muted);
}

/* --- Console & Terminal Output --- */
.console-output-wrapper {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--input-border);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.5);
}

.console-output {
  background: var(--console-bg);
  padding: 12px 14px;
  font-family: 'Consolas', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--console-text);
  height: 160px;
  max-height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.console-output::-webkit-scrollbar {
  width: 6px;
}

.console-output::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
}

/* --- QR Code Scanner --- */
#reader {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  background: #000000;
}

/* --- Accordion (Details / Summary) --- */
details.panel summary {
  padding: 14px 16px;
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
  color: var(--text-muted);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

details.panel summary::-webkit-details-marker {
  display: none;
}

details.panel summary::after {
  content: '▼';
  font-size: 10px;
  transition: transform 0.2s ease;
}

details.panel[open] summary::after {
  transform: rotate(180deg);
}

/* --- Blazor Unhandled Error Banner --- */
#blazor-error-ui {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--panel-border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
  padding: 16px;
  padding-bottom: max(16px, env(safe-area-inset-bottom, 0px));
  font-size: 13.5px;
  color: var(--text-color);
}

#error-detail {
  font-family: 'Consolas', monospace;
  font-size: 11px;
  color: var(--text-muted);
  word-break: break-all;
  margin-top: 6px;
}

#blazor-error-ui .reload {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  margin-top: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-color), #3b82f6);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

#blazor-error-ui .dismiss {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  min-width: 36px;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-muted);
}

/* --- Recent & Pinned Command History (Touch Optimized) --- */
.history-section {
  margin-top: 10px;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.history-clear-btn {
  background: none;
  border: none;
  color: var(--danger-color);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  transition: opacity 0.15s ease;
}

.history-clear-btn:hover,
.history-clear-btn:active {
  opacity: 0.8;
  text-decoration: underline;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 2px;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, background-color 0.15s ease;
  overflow: hidden;
}

.history-item.pinned {
  border-color: var(--accent-color);
  background: rgba(56, 189, 248, 0.07);
}

.history-item:hover,
.history-item:focus-within {
  border-color: var(--accent-color);
}

.history-item-content {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.history-pin-badge {
  font-size: 11px;
  flex-shrink: 0;
}

.history-item-text {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.history-action-btn {
  background: transparent;
  border: none;
  border-left: 1px solid var(--input-border);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  height: 38px;
  width: 38px;
  min-width: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.history-pin-btn:hover,
.history-pin-btn:active {
  color: var(--accent-color);
  background: rgba(56, 189, 248, 0.12);
}

.history-pin-btn.active {
  color: var(--accent-color);
}

.history-delete-btn:hover,
.history-delete-btn:active {
  color: var(--danger-color);
  background: var(--danger-bg);
}