:root {
  --bg-color: #0f172a;
  --card-bg: rgba(30, 41, 59, 0.7);
  --accent-color: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.3);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --glass-border: rgba(255, 255, 255, 0.1);
  --input-bg: rgba(15, 23, 42, 0.6);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  overflow-x: hidden;
  position: relative;
}

/* Background Glow Effects */
.bg-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: 
    radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 40%);
}

.container {
  width: 100%;
  max-width: 1000px;
  animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.header {
  text-align: center;
  margin-bottom: 40px;
}

.logo-icon {
  font-size: 3rem;
  color: var(--accent-color);
  margin-bottom: 10px;
  filter: drop-shadow(0 0 15px var(--accent-glow));
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #fff 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sub {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.main-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

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

.card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-5px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.section-header i {
  color: var(--accent-color);
  font-size: 1.4rem;
}

.section-header h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

input[type="text"] {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 16px;
  color: white;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.primary-btn {
  background: var(--accent-color);
  color: #064e3b;
  border: none;
  border-radius: 14px;
  padding: 16px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.primary-btn:hover {
  background: #34d399;
  transform: scale(1.02);
  box-shadow: 0 0 20px var(--accent-glow);
}

.qr-preview {
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed var(--glass-border);
  border-radius: 20px;
  padding: 20px;
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
}

.qr-wrapper canvas {
  border-radius: 12px;
  max-width: 100%;
  height: auto !important;
}

.secondary-btn {
  background: transparent;
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
  border-radius: 14px;
  padding: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.secondary-btn:hover {
  background: var(--accent-glow);
}

/* Decoder Specifics */
.upload-area {
  margin-bottom: 24px;
}

.custom-file-upload {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px;
  border: 2px dashed var(--glass-border);
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  background: rgba(255, 255, 255, 0.02);
}

.custom-file-upload:hover {
  border-color: var(--accent-color);
  background: var(--accent-glow);
}

.custom-file-upload i {
  font-size: 2.5rem;
  color: var(--accent-color);
}

#uploadInput {
  display: none;
}

#resultWrapper {
  margin-bottom: 24px;
  padding: 20px;
  background: var(--input-bg);
  border-radius: 18px;
  border: 1px solid var(--glass-border);
}

#resultWrapper.hidden {
  display: none;
}

.result-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

#resultText {
  font-size: 1.1rem;
  line-height: 1.5;
  word-break: break-all;
  margin-bottom: 20px;
  color: #fff;
}

.action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.action-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: white;
  padding: 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.9rem;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.action-btn.highlight {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.action-btn.highlight:hover {
  background: var(--accent-glow);
}

/* Footer / Contact */
.contact-area {
  margin-top: auto;
  padding-top: 32px;
  text-align: center;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid var(--glass-border);
}

.social-link:hover {
  background: var(--accent-color);
  color: #064e3b;
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
}

/* Notifications / Toasts */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1000;
}

.toast {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: white;
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  animation: slideIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transition: var(--transition);
}

.toast.success { border-left: 4px solid var(--accent-color); }
.toast.error { border-left: 4px solid #ef4444; }

.toast i { font-size: 1.2rem; }
.toast.success i { color: var(--accent-color); }
.toast.error i { color: #ef4444; }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

.toast.hide {
  opacity: 0;
  transform: translateX(100%);
}