/* Import Font */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
  /* Colors */
  --bg-primary: #021b42;
  --color-cyan: #00d9ff;
  --color-white: #ffffff;
  --color-gray: #94a3b8;
  
  /* Font */
  --font-main: 'Space Grotesk', sans-serif;
  
  /* Spacing */
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
}

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

/* Body Base */
body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--color-white);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-md);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

/* Typography */
h1, h2, h3 {
  color: var(--color-white);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.875rem;
}

p {
  color: var(--color-gray);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

/* Header */
.header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.tagline {
  font-size: 1.125rem;
  color: var(--color-gray);
  margin-bottom: 0;
}

/* Form */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

/* Input */
.input {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-md);
  outline: none;
  transition: all 0.3s ease;
}

.input::placeholder {
  color: var(--color-gray);
}

.input:focus {
  border-color: var(--color-cyan);
  background-color: rgba(255, 255, 255, 0.08);
}

/* Button Primary */
.btn-primary {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--bg-primary);
  background-color: var(--color-cyan);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #00b8d4;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Result */
.result {
  padding: var(--space-lg);
  background-color: rgba(0, 217, 255, 0.1);
  border: 2px solid var(--color-cyan);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
}

.result-label {
  font-size: 0.875rem;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
}

.result-url {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.result-url a {
  flex: 1;
  color: var(--color-cyan);
  font-size: 1.125rem;
  font-weight: 500;
  text-decoration: none;
  word-break: break-all;
}

.result-url a:hover {
  text-decoration: underline;
}

/* Copy Button */
.btn-copy {
  padding: 0.5rem 1rem;
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-white);
  background-color: rgba(0, 217, 255, 0.2);
  border: 1px solid var(--color-cyan);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-copy:hover {
  background-color: var(--color-cyan);
  color: var(--bg-primary);
}

/* Error */
.error {
  padding: var(--space-md);
  background-color: rgba(239, 68, 68, 0.1);
  border: 2px solid #ef4444;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.error p {
  color: #fca5a5;
  margin-bottom: 0;
}

/* Hidden class */
.hidden {
  display: none;
}

/* Tabs */
.tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  border-bottom: 2px solid rgba(0, 217, 255, 0.2);
}

.tab-btn {
  flex: 1;
  padding: var(--space-md);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-gray);
  background-color: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  color: var(--color-white);
}

.tab-btn.active {
  color: var(--color-cyan);
  border-bottom-color: var(--color-cyan);
}

/* Tab Content */
.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-content.active {
  display: block;
}

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

/* Button Secondary (para stats) */
.btn-secondary {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background-color: rgba(0, 217, 255, 0.2);
  border: 2px solid var(--color-cyan);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background-color: rgba(0, 217, 255, 0.3);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
}

/* Stats Result */
.stats-result {
  padding: var(--space-lg);
  background-color: rgba(0, 217, 255, 0.05);
  border: 2px solid rgba(0, 217, 255, 0.3);
  border-radius: var(--radius-lg);
  margin-top: var(--space-lg);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

.stat-item:last-child {
  border-bottom: none;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray);
  font-weight: 500;
}

.stat-value {
  font-size: 1.125rem;
  color: var(--color-white);
  word-break: break-all;
}

.stat-value a {
  color: var(--color-cyan);
  text-decoration: none;
}

.stat-value a:hover {
  text-decoration: underline;
}

/* Result sections */
.result-section {
  margin-bottom: var(--space-lg);
}

.result-section:last-child {
  margin-bottom: 0;
}

.result-code {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.code-text {
  flex: 1;
  min-width: 150px;
  padding: var(--space-md);
  font-family: 'Courier New', monospace;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-cyan);
  background-color: rgba(0, 217, 255, 0.1);
  border: 2px solid rgba(0, 217, 255, 0.3);
  border-radius: var(--radius-sm);
  text-align: center;
}

/* Button Secondary Small */
.btn-secondary-small {
  padding: 0.75rem 1.5rem;
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-white);
  background-color: rgba(0, 217, 255, 0.2);
  border: 2px solid var(--color-cyan);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-secondary-small:hover {
  background-color: var(--color-cyan);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.btn-secondary-small:active {
  transform: translateY(0);
}

/* Stat Actions */
.stat-actions {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(0, 217, 255, 0.1);
}

/* Button Danger */
.btn-danger {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background-color: rgba(239, 68, 68, 0.2);
  border: 2px solid #ef4444;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-danger:hover {
  background-color: #ef4444;
  transform: translateY(-2px);
}

.btn-danger:active {
  transform: translateY(0);
}

/* Success message */
.success {
  padding: var(--space-md);
  background-color: rgba(34, 197, 94, 0.1);
  border: 2px solid #22c55e;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.success p {
  color: #86efac;
  margin-bottom: 0;
}

/* Footer */
.footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  text-align: center;
  border-top: 1px solid rgba(0, 217, 255, 0.2);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  color: var(--color-gray);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

.github-link:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
  background-color: rgba(0, 217, 255, 0.1);
  transform: translateY(-2px);
}

.github-link svg {
  width: 20px;
  height: 20px;
}

/* Mobile */
@media (max-width: 640px) {
  .footer {
    margin-top: var(--space-md);
  }
  
  .github-link {
    font-size: 0.8rem;
    padding: 0.65rem 1.25rem;
  }
}