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

:root {
  --font-sans: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Color Palette - Premium Dark Theme */
  --bg-base: #0a0b10;
  --bg-surface: rgba(18, 20, 32, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  
  --primary: #6366f1; /* Indigo */
  --primary-glow: rgba(99, 102, 241, 0.45);
  --secondary: #06b6d4; /* Cyan */
  --secondary-glow: rgba(6, 182, 212, 0.45);
  --accent: #d946ef; /* Pink */
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.15);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: rgba(255, 255, 255, 0.7);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  --primary: #4f46e5;
  --primary-glow: rgba(79, 70, 229, 0.3);
  --secondary: #0891b2;
  --secondary-glow: rgba(8, 145, 178, 0.3);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.05);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

/* Background Animated Blobs */
.bg-blobs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
  mix-blend-mode: screen;
  animation: float 20s infinite alternate;
  transition: var(--transition-smooth);
}

[data-theme="light"] .blob {
  opacity: 0.12;
  mix-blend-mode: multiply;
  filter: blur(80px);
}

.blob-1 {
  top: -10%;
  left: -10%;
  width: 45vw;
  height: 45vw;
  background: var(--primary);
  animation-duration: 25s;
}

.blob-2 {
  bottom: -15%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: var(--secondary);
  animation-duration: 30s;
  animation-delay: -5s;
}

.blob-3 {
  top: 40%;
  left: 50%;
  width: 35vw;
  height: 35vw;
  background: var(--accent);
  animation-duration: 20s;
  animation-delay: -10s;
}

@keyframes float {
  0% {
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  50% {
    transform: translate(5%, 10%) scale(1.1) rotate(180deg);
  }
  100% {
    transform: translate(-5%, -5%) scale(0.9) rotate(360deg);
  }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* App Container */
.app-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Header styling */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 15px var(--primary-glow);
}

h1 {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.theme-toggle-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
  transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* Main Grid Layout */
.main-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 900px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

/* Sidebar Navigation */
.sidebar {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

[data-theme="light"] .nav-item:hover {
  background: rgba(0, 0, 0, 0.03);
}

.nav-item.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
  border-left: 3px solid var(--primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow);
}

/* Info Box / Security Badge */
.security-badge {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.security-badge-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--success);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.security-badge-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Content Area */
.content-area {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  display: none;
  animation: fadeIn 0.4s ease-out;
}

.card.active {
  display: block;
}

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

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.5;
}

/* Form Styles */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  position: relative;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.input-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  pointer-events: none;
}

input[type="text"], textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition-smooth);
}

[data-theme="light"] input[type="text"], 
[data-theme="light"] textarea {
  background: rgba(255, 255, 255, 0.8);
}

input[type="text"] {
  padding-left: 2.75rem;
}

input[type="text"]:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
  background: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] input[type="text"]:focus, 
[data-theme="light"] textarea:focus {
  background: #ffffff;
}

textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

[data-theme="light"] .btn-secondary {
  background: rgba(0, 0, 0, 0.03);
}
[data-theme="light"] .btn-secondary:hover {
  background: rgba(0, 0, 0, 0.07);
}

/* Active OTP Display */
.otp-display-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2.5rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: 1.5rem;
  text-align: center;
}

.otp-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.otp-code {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  cursor: pointer;
  position: relative;
  transition: var(--transition-smooth);
}

.otp-code:hover {
  transform: scale(1.05);
  filter: brightness(1.2);
}

/* Circular Timer Indicator */
.timer-container {
  position: relative;
  width: 80px;
  height: 80px;
}

.timer-svg {
  transform: rotate(-90deg);
  width: 80px;
  height: 80px;
}

.timer-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.05);
  stroke-width: 6;
}

[data-theme="light"] .timer-bg {
  stroke: rgba(0, 0, 0, 0.05);
}

.timer-progress {
  fill: none;
  stroke: var(--primary);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 220; /* 2 * PI * r (where r is 35) = 219.9 */
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.1s linear, stroke var(--transition-smooth);
}

.timer-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-secondary);
}

/* Account Info in Display */
.otp-account-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Copy Confirmation Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(18, 20, 32, 0.9);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  pointer-events: none;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast-success-icon {
  color: var(--success);
}

/* Saved Keys List */
.account-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
  max-height: 400px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.account-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  transition: var(--transition-smooth);
}

.account-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

[data-theme="light"] .account-item {
  background: rgba(0, 0, 0, 0.01);
}
[data-theme="light"] .account-item:hover {
  background: rgba(0, 0, 0, 0.03);
}

.account-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.account-name {
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.account-issuer {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.account-code {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.account-code:hover {
  color: var(--primary);
}

.account-actions {
  display: flex;
  gap: 0.5rem;
}

.action-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

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

.action-btn.delete-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* Bulk Table Display */
.bulk-results-container {
  margin-top: 2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.bulk-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.bulk-table th {
  background: rgba(0, 0, 0, 0.2);
  padding: 1rem;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

[data-theme="light"] .bulk-table th {
  background: rgba(0, 0, 0, 0.02);
}

.bulk-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
}

.bulk-table tr:last-child td {
  border-bottom: none;
}

.bulk-code-cell {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bulk-copy-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  border-radius: 4px;
}

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

/* QR Code Scanner Overlay */
.qr-scanner-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.1);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.qr-video-wrapper {
  position: relative;
  width: 100%;
  max-width: 350px;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: #000;
  display: none;
}

.qr-video-wrapper.active {
  display: block;
}

#reader {
  width: 100%;
  height: 100%;
}

.qr-upload-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2.5rem;
  cursor: pointer;
  width: 100%;
  transition: var(--transition-smooth);
}

.qr-upload-area:hover {
  background: rgba(255, 255, 255, 0.02);
}

.qr-upload-icon {
  font-size: 3rem;
  color: var(--primary);
}

.qr-file-input {
  display: none;
}

/* Modal Styling */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 11, 16, 0.8);
  backdrop-filter: blur(12px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

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

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 90%;
  max-width: 450px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

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

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
}

#qrcode-canvas {
  padding: 1rem;
  background: white;
  border-radius: var(--radius-md);
  margin: 1rem 0;
}

/* Footer styling */
footer {
  text-align: center;
  padding: 2rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-link:hover {
  color: var(--primary);
}

/* Helper utilities */
.flex-row-gap {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.text-danger {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
  text-align: center;
}

.empty-state-icon {
  font-size: 2.5rem;
  opacity: 0.5;
}