/* CopyAnywhere - Modern Minimal Style */

:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --color-success: #10b981;
  --color-error: #ef4444;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-border: #334155;
  }
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.tagline {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

main {
  flex: 1;
  padding: 2rem 0;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

textarea {
  width: 100%;
  min-height: 160px;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}

textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

textarea::placeholder { color: var(--color-text-secondary); }

.meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
}

.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover { background: var(--color-bg-secondary); }

.result {
  display: none;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.result.show { display: block; }

.result-item {
  margin-bottom: 1rem;
}

.result-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: 0.375rem;
}

.result-value {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  word-break: break-all;
}

.qr-container {
  text-align: center;
  margin-top: 1rem;
}

.qr-container img {
  border-radius: 8px;
}

.error {
  background: rgb(239 68 68 / 0.1);
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: none;
}

.error.show { display: block; }

/* OTP Input */
.otp-container {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin: 1.5rem 0;
}

.otp-input {
  width: 48px;
  height: 56px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.otp-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* Features Section */
.features {
  padding: 3rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.feature {
  text-align: center;
  padding: 1.5rem;
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  color: var(--color-primary);
}

.feature h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

footer {
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text);
  color: var(--color-bg);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Clear Button */
.btn-clear {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

.btn-clear:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

/* Tips Text */
.tips-text {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-top: 1rem;
}

/* Result View */
.result-view {
  animation: fadeIn 0.3s ease;
}

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

.result-textarea {
  min-height: 200px;
  margin-bottom: 1rem;
}

/* Link Secondary */
.link-secondary {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
}

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

/* Responsive */
@media (max-width: 480px) {
  h1 { font-size: 1.5rem; }
  .otp-input { width: 40px; height: 48px; font-size: 1.25rem; }
  .qr-container img { max-width: 180px; }
}