/* CSS Reset & Variable Definitions */
:root {
  --bg-base: #060511;
  --bg-surface: rgba(17, 14, 38, 0.6);
  --bg-card: rgba(26, 22, 54, 0.4);
  --border-color: rgba(255, 255, 255, 0.07);
  --border-color-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --primary: #6366f1; /* Indigo */
  --secondary: #d946ef; /* Fuchsia */
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #d946ef 100%);
  --btn-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #9333ea 50%, #c084fc 100%);
  --primary-glow: rgba(99, 102, 241, 0.4);
  --glow-color-1: rgba(99, 102, 241, 0.15);
  --glow-color-2: rgba(217, 70, 239, 0.1);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --success-border: rgba(16, 185, 129, 0.25);
  
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --warning-border: rgba(245, 158, 11, 0.25);

  --danger: #f43f5e;
  --danger-bg: rgba(244, 63, 94, 0.1);
  --danger-border: rgba(244, 63, 94, 0.25);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-lg: 16px;
  --border-radius-md: 12px;
  --border-radius-sm: 8px;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  overflow-x: hidden;
  position: relative;
  line-height: 1.5;
}

/* Ambient glow background decoration */
.glow-orb {
  position: absolute;
  width: 40vw;
  height: 40vw;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
}

.orb-1 {
  background: var(--glow-color-1);
  top: -10vw;
  left: -5vw;
}

.orb-2 {
  background: var(--glow-color-2);
  bottom: -5vw;
  right: -5vw;
}

/* Application Layout */
.app-container {
  width: 100%;
  max-width: 800px;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Header */
.app-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.logo-area {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  backdrop-filter: blur(5px);
}

.logo-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--primary);
}

.logo-text {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app-title {
  font-family: 'Outfit', sans-serif;
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #f8fafc, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 540px;
}

/* Card Styling (Glassmorphism) */
.search-card, .results-card, .feedback-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: border-color var(--transition-normal);
}

.search-card {
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.search-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-gradient);
}

/* Inputs and Forms */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.input-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

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

#panInput {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 1rem 3rem 1rem 1.25rem;
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: var(--border-radius-md);
  outline: none;
  transition: all var(--transition-normal);
  text-transform: uppercase;
}

#panInput:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
  background: rgba(0, 0, 0, 0.35);
}

/* Dynamic Input Validation Icons */
.validation-status {
  position: absolute;
  right: 1.25rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.validation-status.valid {
  background-color: var(--success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.validation-status.valid::after {
  content: '✓';
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
}

.validation-status.invalid {
  background-color: var(--danger);
  box-shadow: 0 0 10px rgba(244, 63, 94, 0.5);
}

.validation-status.invalid::after {
  content: '✕';
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
}

/* Input validation feedback guidance */
.validation-hints {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.5rem;
  padding-left: 0.25rem;
}

.hint-item {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast);
}

.hint-icon {
  width: 0.875rem;
  height: 0.875rem;
  fill: currentColor;
}

.hint-item.met {
  color: var(--success);
}

/* Primary Button Design */
.btn-primary {
  width: 100%;
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: white;
  background: var(--primary-gradient);
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.3);
}

.btn-primary:hover:not(:disabled) {
  background: var(--btn-gradient-hover);
  box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-primary:disabled {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

/* Loading Spinner */
.btn-loader {
  display: none;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Feedback Cards (Success, Error, General Alerts) */
.feedback-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feedback-card {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  animation: slideIn var(--transition-normal);
}

.feedback-icon {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.feedback-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.feedback-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
}

.feedback-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Feedback Types styling */
.feedback-card.error {
  border-left: 4px solid var(--danger);
  background: var(--danger-bg);
  border-color: var(--danger-border);
}
.feedback-card.error .feedback-icon { color: var(--danger); }
.feedback-card.error .feedback-title { color: var(--danger); }

.feedback-card.warning {
  border-left: 4px solid var(--warning);
  background: var(--warning-bg);
  border-color: var(--warning-border);
}
.feedback-card.warning .feedback-icon { color: var(--warning); }
.feedback-card.warning .feedback-title { color: var(--warning); }

.feedback-card.info {
  border-left: 4px solid var(--primary);
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.2);
}
.feedback-card.info .feedback-icon { color: var(--primary); }
.feedback-card.info .feedback-title { color: var(--primary); }

/* Results Grid Section */
.results-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  animation: fadeIn var(--transition-normal);
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 0.25rem;
}

.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.results-count {
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}

.results-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Individual GSTIN Result Cards */
.results-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.results-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary-gradient);
}

/* Card Header elements */
.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.25rem;
}

.card-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card-lgnm {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.card-trade {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* Badges */
.badge {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.badge-active {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.15);
}

.badge-inactive {
  background-color: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning-border);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
}

/* Meta Data Grid Layout */
.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem 2rem;
}

@media (max-width: 640px) {
  .data-grid {
    grid-template-columns: 1fr;
  }
}

.data-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.data-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.data-value {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.data-value.gstin-highlight {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Additional places sub-panel (expandable) */
.additional-panel {
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.expand-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  transition: all var(--transition-fast);
}

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

.expand-btn-icon {
  width: 1rem;
  height: 1rem;
  transition: transform var(--transition-normal);
}

.expand-btn.active .expand-btn-icon {
  transform: rotate(180deg);
}

/* Expandable content area */
.expand-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.expand-content.open {
  max-height: 1000px; /* Arbitrary large limit that transitions nicely */
}

.additional-place-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.additional-place-title {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--secondary);
  letter-spacing: 0.05em;
}

/* Loading skeleton styles */
.skeleton-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.skeleton-card {
  height: 250px;
  background: linear-gradient(
    90deg,
    rgba(26, 22, 54, 0.2) 25%,
    rgba(26, 22, 54, 0.4) 37%,
    rgba(26, 22, 54, 0.2) 63%
  );
  background-size: 400% 100%;
  animation: skeleton-pulse 1.4s ease infinite;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
}

@keyframes skeleton-pulse {
  0% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

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

.hidden {
  display: none !important;
}

/* Footer Section */
.app-footer {
  text-align: center;
  padding: 2rem 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  width: 100%;
}