/* ==========================================================================
   Cloudflare R2 File Manager - Login Aesthetics
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-app: hsl(240, 10%, 4%);
  --bg-surface: hsl(240, 5%, 11%);
  --bg-surface-hover: hsl(240, 5%, 15%);
  --border-subtle: hsl(240, 4%, 16%);
  --border-strong: hsl(240, 5%, 24%);
  --border-focus: hsl(217, 91%, 60%);

  --text-primary: hsl(0, 0%, 98%);
  --text-secondary: hsl(240, 5%, 65%);
  --text-muted: hsl(240, 4%, 46%);

  --accent-primary: hsl(217, 91%, 60%);
  --accent-primary-hover: hsl(217, 91%, 52%);
  --accent-primary-subtle: hsla(217, 91%, 60%, 0.12);
  --accent-danger: hsl(0, 72%, 51%);

  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  -webkit-font-smoothing: antialiased;
}

.login-wrapper {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.login-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, hsl(217, 91%, 60%), hsl(224, 76%, 48%));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}

.login-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.login-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-password-wrapper {
  position: relative;
  width: 100%;
}

.form-input {
  width: 100%;
  background: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 40px 10px 12px;
  font-size: 0.95rem;
  color: var(--text-primary);
  outline: none;
  transition: all 0.15s ease;
}

.form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-primary-subtle);
}

.toggle-password-btn {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
}
.toggle-password-btn:hover { color: var(--text-primary); }

.btn-submit {
  background: var(--accent-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 11px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-submit:hover:not(:disabled) {
  background: var(--accent-primary-hover);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.alert-box {
  background: hsla(0, 72%, 51%, 0.12);
  border: 1px solid var(--accent-danger);
  color: var(--text-primary);
  font-size: 0.85rem;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  display: none;
  align-items: center;
  gap: 8px;
}

.login-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}