:root {
  --bg: #090d16;
  --card-bg: rgba(18, 24, 38, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  --primary: #38bdf8;
  --primary-hover: #0ea5e9;
  --accent: #818cf8;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --danger: #f43f5e;
  --success: #10b981;
  --radius: 12px;
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(129, 140, 248, 0.08) 0%, transparent 40%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  padding: 2rem 1rem;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.logo-icon {
  font-size: 2rem;
  filter: drop-shadow(0 0 10px rgba(56, 189, 248, 0.5));
}

.header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f8fafc 30%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto 1rem;
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 999px;
  font-size: 0.82rem;
  font-family: 'JetBrains Mono', monospace;
  color: #34d399;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.9); }
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: #f8fafc;
}

/* Form */
.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

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

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

input[type="url"],
input[type="text"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(10, 15, 26, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

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

.prefix {
  padding: 0.75rem 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-right: none;
  border-radius: 8px 0 0 8px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.input-prefix-wrapper input {
  border-radius: 0 8px 8px 0;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  color: #031326;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-icon {
  background: transparent;
  padding: 0.4rem;
  font-size: 1.1rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-danger-outline {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: var(--danger);
  border-radius: 6px;
}

.btn-danger-outline:hover {
  background: rgba(244, 63, 94, 0.15);
}

/* Result Box */
.result-box {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: rgba(56, 189, 248, 0.07);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.result-label {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
}

.short-url {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.short-url:hover {
  text-decoration: underline;
}

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

/* Links List */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-header h2 {
  margin-bottom: 0;
}

.links-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: rgba(10, 15, 26, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  transition: border-color 0.2s;
  flex-wrap: wrap;
  gap: 1rem;
}

.link-item:hover {
  border-color: rgba(56, 189, 248, 0.3);
}

.link-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  max-width: 60%;
}

.link-title {
  font-weight: 600;
  font-size: 1rem;
  color: #f8fafc;
}

.link-slug {
  font-family: 'JetBrains Mono', monospace;
  color: var(--primary);
  font-size: 0.9rem;
  text-decoration: none;
}

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

.link-metrics {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.click-badge {
  padding: 0.35rem 0.75rem;
  background: rgba(129, 140, 248, 0.15);
  border: 1px solid rgba(129, 140, 248, 0.3);
  color: #a5b4fc;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-content {
  background: #0f172a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 500px;
  width: 100%;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.modal-stats {
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
}

.close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

.close-btn:hover {
  color: #fff;
}

.qr-container {
  display: flex;
  justify-content: center;
  padding: 1.5rem 0;
}

.qr-url-text {
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  word-break: break-all;
}

/* Stats Grid */
.stats-header {
  margin-bottom: 1.5rem;
}

.stats-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  word-break: break-all;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 1rem;
}

.stat-card h4 {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
}

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.bar-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #cbd5e1;
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 0.75rem;
}

.clicks-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.clicks-table th,
.clicks-table td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.clicks-table th {
  color: var(--text-muted);
  font-weight: 500;
}

.footer {
  text-align: center;
  margin-top: 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
}

.hidden {
  display: none !important;
}