/* ==========================================================================
   Grameen SMS Live - Modern Glassmorphism Styling System
   ========================================================================== */

/* Design Tokens & Theme Variables */
:root {
  --font-family-title: 'Outfit', 'Inter', -apple-system, sans-serif;
  --font-family-body: 'Inter', -apple-system, sans-serif;

  /* Theme: Dark (Default) */
  --bg-color: #030712;
  --bg-glow-1: rgba(37, 99, 235, 0.15); /* Sleek Blue */
  --bg-glow-2: rgba(96, 165, 250, 0.1);  /* Accent Cyan */
  
  --glass-bg: rgba(17, 24, 39, 0.45);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-focus: rgba(96, 165, 250, 0.4);
  --glass-shadow: rgba(0, 0, 0, 0.5);

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-accent: #60a5fa;
  
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.15);
  --color-success-border: rgba(16, 185, 129, 0.3);

  --color-danger: #ef4444;
  --color-danger-bg: rgba(239, 68, 68, 0.15);
  --color-danger-border: rgba(239, 68, 68, 0.3);
  
  --color-warning: #f59e0b;
  
  --card-radius: 16px;
  --button-radius: 12px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-color: #f1f5f9;
  --bg-glow-1: rgba(37, 99, 235, 0.08);
  --bg-glow-2: rgba(96, 165, 250, 0.05);

  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(15, 23, 42, 0.08);
  --glass-border-focus: rgba(37, 99, 235, 0.4);
  --glass-shadow: rgba(15, 23, 42, 0.05);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-accent: #3b82f6;
  
  --color-success: #059669;
  --color-success-bg: rgba(5, 150, 105, 0.1);
  --color-success-border: rgba(5, 150, 105, 0.2);

  --color-danger: #dc2626;
  --color-danger-bg: rgba(220, 38, 38, 0.1);
  --color-danger-border: rgba(220, 38, 38, 0.2);
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family-body);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color 0.5s ease, color 0.3s ease;
}

/* Glowing Ambient Backgrounds */
.bg-glow {
  position: fixed;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.bg-glow-1 {
  top: -10%;
  right: -10%;
  background: var(--bg-glow-1);
}

.bg-glow-2 {
  bottom: -10%;
  left: -10%;
  background: var(--bg-glow-2);
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Header styling */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 32px var(--glass-shadow);
  margin-bottom: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo i {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.logo h1 {
  font-family: var(--font-family-title);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo h1 span {
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Glassmorphism Card Base */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 32px 0 var(--glass-shadow);
  transition: var(--transition-smooth);
}

/* Buttons */
button {
  cursor: pointer;
  border: none;
  font-family: var(--font-family-body);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

.btn-icon {
  background: transparent;
  color: var(--text-primary);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  font-size: 1.2rem;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--glass-border-focus);
}

.btn-logout {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 0.5rem 1rem;
  border-radius: var(--button-radius);
  font-size: 0.9rem;
}

.btn-logout:hover {
  background: var(--color-danger);
  color: #fff;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.4);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #fff;
  padding: 0.85rem 1.5rem;
  border-radius: var(--button-radius);
  font-size: 1rem;
  font-weight: 600;
  width: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 0.75rem 1.25rem;
  border-radius: var(--button-radius);
  font-size: 0.9rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--glass-border-focus);
}

.btn-full {
  width: 100%;
}

.btn-danger-outline {
  background: transparent;
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger);
  width: 40px;
  height: 40px;
  border-radius: var(--button-radius);
  font-size: 1rem;
}

.btn-danger-outline:hover {
  background: var(--color-danger);
  color: #fff;
}

/* Authentication Screen */
.auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1;
  padding: 2rem 0;
}

.auth-card {
  width: 100%;
  max-width: 450px;
  padding: 2.5rem;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h2 {
  font-family: var(--font-family-title);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Input Fields */
.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper i {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  font-size: 1.1rem;
  pointer-events: none;
}

.input-wrapper input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--button-radius);
  color: var(--text-primary);
  font-family: var(--font-family-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
}

.input-wrapper input:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--glass-border-focus);
  box-shadow: 0 0 15px rgba(96, 165, 250, 0.15);
}

/* Alert Boxes */
.alert-message {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: var(--button-radius);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.alert-message.error {
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  color: #fca5a5;
}

/* Dashboard Container */
.dashboard-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  flex: 1;
}

/* Stats Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
}

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.blue-glow {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--color-accent);
}

.otp-glow {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.device-glow {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--color-warning);
}

.stat-content h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  font-weight: 600;
}

.stat-content p {
  font-family: var(--font-family-title);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  margin-top: 0.25rem;
}

/* Dashboard main columns */
.dashboard-body {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  align-items: start;
}

.panel {
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.panel:last-child {
  margin-bottom: 0;
}

.panel-header {
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 0.75rem;
}

.panel-header h2 {
  font-family: var(--font-family-title);
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Devices list */
.devices-list-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 280px;
  overflow-y: auto;
}

.device-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--button-radius);
}

.device-avatar {
  font-size: 1.5rem;
  color: var(--text-secondary);
}

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

.device-name {
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.device-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.battery-indicator i {
  color: var(--color-success);
}

.device-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 20px;
}

.device-status-badge.online {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success);
}

.device-status-badge.offline {
  background: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger);
}

/* Empty State / Loading State */
.empty-state, .loading-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
}

.empty-state i {
  font-size: 2.2rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.empty-state p {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.empty-state span {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  line-height: 1.4;
}

.loading-state i {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

/* Settings Items */
.settings-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.settings-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

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

.setting-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.setting-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

.settings-action {
  margin-top: 0.5rem;
  border-top: 1px solid var(--glass-border);
  padding-top: 1.25rem;
}

/* Switch styling */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .4s;
  border-radius: 34px;
  border: 1px solid var(--glass-border);
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-primary);
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--color-primary);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Feed Column */
.feed-card {
  padding: 1.5rem;
  min-height: 500px;
  display: flex;
  flex-direction: column;
}

/* Feed Filters Bar */
.feed-filters {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 250px;
}

.search-wrapper i {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
}

.search-wrapper input {
  width: 100%;
  padding: 0.7rem 1rem 0.7rem 2.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--button-radius);
  color: var(--text-primary);
  outline: none;
  font-family: var(--font-family-body);
  transition: var(--transition-smooth);
}

.search-wrapper input:focus {
  border-color: var(--glass-border-focus);
  background: rgba(255, 255, 255, 0.06);
}

.filter-options {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-filter {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.6rem 1.2rem;
  border-radius: var(--button-radius);
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-filter:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.btn-filter.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Feed List Container */
.feed-list-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  flex: 1;
}

/* SMS Card Item */
.sms-item {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  animation: slideIn 0.3s ease-out forwards;
}

.sms-item:hover {
  transform: translateX(4px);
  border-color: var(--glass-border-focus);
  background: rgba(255, 255, 255, 0.04);
}

/* OTP highlight variation */
.sms-item.is-otp {
  border-left: 4px solid var(--color-success);
}

.sms-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sms-sender {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-family: var(--font-family-title);
  color: var(--text-primary);
}

.sms-sender i {
  color: var(--color-primary);
  font-size: 0.95rem;
}

.sms-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.sms-device-info {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
  font-size: 0.7rem;
}

.sms-body {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-secondary);
  word-break: break-word;
  white-space: pre-wrap;
}

/* OTP Code Panel inside SMS Card */
.otp-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: var(--color-success-bg);
  border: 1px dashed var(--color-success-border);
  border-radius: var(--button-radius);
}

.otp-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.otp-left i {
  color: var(--color-success);
  font-size: 1.2rem;
}

.otp-label {
  display: flex;
  flex-direction: column;
}

.otp-label span {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.otp-code {
  font-family: 'Outfit', monospace;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-success);
  letter-spacing: 1px;
}

.btn-copy {
  background: var(--color-success);
  color: #fff;
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
}

.btn-copy:hover {
  background: #059669;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

.btn-copy.copied {
  background: var(--text-muted);
}

/* Footer styling */
.app-footer {
  text-align: center;
  padding: 2rem 0 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: auto;
}

/* Global utility classes */
.hidden {
  display: none !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

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

.pulse-icon {
  animation: pulse 2s infinite ease-in-out;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .dashboard-body {
    grid-template-columns: 1fr;
  }
  
  .sidebar-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  
  .panel {
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  .sidebar-col {
    grid-template-columns: 1fr;
  }
  
  .app-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .feed-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-wrapper {
    width: 100%;
  }
  
  .filter-options {
    justify-content: space-between;
  }
}