:root {
  --background: #fdfdfd;
  --surface: #ffffff;
  --surface-alt: #f0f4f8;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --accent: #ec4899;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 40px -4px rgba(79, 70, 229, 0.1);
  --gradient-text: linear-gradient(135deg, var(--primary), var(--accent));
  --gradient-bg: radial-gradient(circle at top right, #e0e7ff 0%, #fdfdfd 40%);
}

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

body {
  font-family: var(--font-inter), system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
  background: var(--gradient-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.main-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  padding: 1.5rem 0;
  background: rgba(253, 253, 253, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 3rem;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-block;
  background: var(--surface-alt);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 99px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.hero-title .highlight {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.6;
}

/* Shortener Box */
.shortener-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  border: 1px solid rgba(226, 232, 240, 0.8);
}

/* Tabs */
.tabs-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  background: var(--surface-alt);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Form */
.app-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.app-form-stacked {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

@media (max-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }

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

.input-wrapper {
  display: flex;
  flex-direction: column;
  text-align: left;
  gap: 0.5rem;
}

.input-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.input-styled,
.select-styled,
.textarea-styled {
  width: 100%;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.2s;
  outline: none;
}

.input-styled:focus,
.select-styled:focus,
.textarea-styled:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.textarea-styled {
  resize: vertical;
  min-height: 120px;
}

/* Buttons */
.btn-primary {
  background: var(--gradient-text);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(236, 72, 153, 0.3);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  border-color: var(--text-primary);
}

/* Result Box */
.result-container {
  margin-top: 2rem;
  padding: 1.5rem;
  background: #fdf2f8;
  /* Very light pink/fuchsia */
  border: 2px dashed #fbcfe8;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.result-link {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.result-link:hover {
  text-decoration: underline;
}

@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }

  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Features Grid */
.features-section {
  padding: 4rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--surface-alt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Table */
.data-table-wrapper {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow-x: auto;
  margin-top: 2rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: var(--surface-alt);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

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

.footer {
  padding: 3rem 0;
  margin-top: auto;
  text-align: center;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* Admin Dashboard Styles */
.admin-container {
  padding: 3rem 0;
  max-width: 1000px;
  margin: 0 auto;
}

.admin-header {
  margin-bottom: 2rem;
}

.admin-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: #0f172a;
  /* Dark blue/black like screenshot */
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.admin-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.admin-tabs-wrapper {
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.admin-tabs {
  display: flex;
  gap: 2rem;
}

.admin-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  padding: 1rem 0.5rem;
  cursor: pointer;
  position: relative;
  transition: color 0.2s ease;
}

.admin-tab:hover {
  color: var(--text-primary);
}

.admin-tab.active {
  color: #3b82f6;
  /* Blue accent from screenshot */
}

.admin-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #3b82f6;
  /* Blue underline */
  border-radius: 3px 3px 0 0;
}

.admin-content {
  min-height: 400px;
}

.admin-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

/* Login Panel Styles */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1rem;
  min-height: calc(100vh - 250px);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
}

.login-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}