:root {
  --brand-color: #6f42c1;
}

.btn-primary {
  --bs-btn-bg: var(--brand-color);
  --bs-btn-border-color: var(--brand-color);
  --bs-btn-hover-bg: color-mix(in srgb, var(--brand-color) 85%, black 15%);
  --bs-btn-hover-border-color: var(--bs-btn-hover-bg);
  --bs-btn-active-bg: var(--bs-btn-hover-bg);
  --bs-btn-active-border-color: var(--bs-btn-hover-bg);
}

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

html, body {
  height: 100%;
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.login-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #060d1f;
  transition: background 0.25s ease;
}

[data-bs-theme="light"] .login-page {
  background: #f3f5fb;
}

.page-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 50% at 22% 80%, rgba(81, 112, 255, 0.16) 0%, transparent 65%),
    radial-gradient(ellipse 45% 45% at 80% 15%, rgba(20, 230, 180, 0.10) 0%, transparent 60%);
}

[data-bs-theme="light"] .page-glow {
  background:
    radial-gradient(ellipse 55% 50% at 22% 80%, rgba(111, 66, 193, 0.07) 0%, transparent 65%),
    radial-gradient(ellipse 45% 45% at 80% 15%, rgba(20, 180, 160, 0.06) 0%, transparent 60%);
}

.data-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  left: var(--x);
  top: var(--y);
  font-size: var(--fs, 0.7rem);
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-weight: 600;
  color: rgba(130, 160, 255, var(--op, 0.4));
  white-space: nowrap;
  letter-spacing: 0.04em;
  animation: floatUp var(--dur, 16s) ease-in-out infinite;
  animation-delay: var(--d, 0s);
  user-select: none;
}

[data-bs-theme="light"] .particle {
  color: rgba(90, 110, 200, calc(var(--op, 0.4) * 0.55));
}

.particle:nth-child(3n) {
  color: rgba(20, 230, 180, var(--op, 0.4));
}

[data-bs-theme="light"] .particle:nth-child(3n) {
  color: rgba(20, 160, 140, calc(var(--op, 0.4) * 0.55));
}

.particle:nth-child(5n) {
  color: rgba(255, 214, 0, calc(var(--op, 0.4) * 0.8));
}

[data-bs-theme="light"] .particle:nth-child(5n) {
  color: rgba(190, 150, 0, calc(var(--op, 0.4) * 0.5));
}

@keyframes floatUp {
  0%   { transform: translateY(0)   translateX(0);    opacity: 0; }
  10%  { opacity: var(--op, 0.4); }
  45%  { transform: translateY(-38px) translateX(12px); }
  55%  { transform: translateY(-42px) translateX(-8px); }
  90%  { opacity: var(--op, 0.4); }
  100% { transform: translateY(-80px) translateX(5px);  opacity: 0; }
}

.theme-toggle-wrap {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 10;
}

.theme-toggle-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9ca3af;
  padding: 0;
  transition: border-color 0.2s, background 0.2s;
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
}

[data-bs-theme="light"] .theme-toggle-btn {
  border-color: #dee2e6;
  background: #fff;
  color: #6c757d;
}

[data-bs-theme="light"] .theme-toggle-btn:hover {
  background: rgba(0, 0, 0, 0.03);
  border-color: #adb5bd;
}

.theme-icon-wrap {
  position: relative;
  width: 1.125rem;
  height: 1.125rem;
}

.icon-sun, .icon-moon {
  position: absolute;
  font-size: 0.9375rem;
  transition: opacity 0.3s ease, transform 0.3s ease;
  top: 0; left: 0;
}

.icon-sun  { opacity: 1; transform: rotate(0deg)   scale(1);   color: #f59e0b; }
.icon-moon { opacity: 0; transform: rotate(90deg)  scale(0.3); color: #818cf8; }

[data-bs-theme="dark"] .icon-sun  { opacity: 0; transform: rotate(-90deg) scale(0.3); }
[data-bs-theme="dark"] .icon-moon { opacity: 1; transform: rotate(0deg)   scale(1);   }

.login-center {
  position: relative;
  z-index: 5;
  width: 100%;
  max-width: 31rem;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.brand-block {
  text-align: center;
  margin-bottom: 2rem;
}

.brand-text {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1;
}

.brand-north {
  color: #fff;
}

[data-bs-theme="light"] .brand-north {
  color: #1e293b;
}

.brand-supply {
  color: #14e6b4;
  margin-left: 0.2rem;
}

.brand-tagline {
  margin: 0.6rem 0 0;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.01em;
}

[data-bs-theme="light"] .brand-tagline {
  color: #64748b;
}

.login-card {
  width: 100%;
  padding: 2.75rem 2.5rem;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  color: #e2e8f0;
}

[data-bs-theme="light"] .login-card {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 20px 50px rgba(30, 41, 59, 0.08);
  color: #1e293b;
}

.login-card h2 {
  color: inherit;
}

.field-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0.375rem;
}

[data-bs-theme="light"] .field-label {
  color: #6c757d;
}

.form-control, .input-group-text {
  border-radius: 0.5rem;
}

.input-group > .input-group-text {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-group > .form-control {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.input-group > .form-control:last-child {
  border-top-right-radius: 0.5rem;
  border-bottom-right-radius: 0.5rem;
}

.input-group > .btn:last-child {
  border-top-right-radius: 0.5rem;
  border-bottom-right-radius: 0.5rem;
}

.login-card .form-control,
.login-card .input-group-text {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
}

.login-card .form-control::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.login-card .form-control:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: #14e6b4;
  box-shadow: 0 0 0 0.2rem rgba(20, 230, 180, 0.15);
  color: #e2e8f0;
}

[data-bs-theme="light"] .login-card .form-control,
[data-bs-theme="light"] .login-card .input-group-text {
  background: #fff;
  border-color: #dee2e6;
  color: #1e293b;
}

[data-bs-theme="light"] .login-card .form-control::placeholder {
  color: #94a3b8;
}

[data-bs-theme="light"] .login-card .form-control:focus {
  background: #fff;
  border-color: var(--brand-color);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--brand-color) 15%, transparent);
  color: #1e293b;
}

.link-forgot {
  color: #14e6b4;
  text-decoration: none;
}
.link-forgot:hover { text-decoration: underline; }

[data-bs-theme="light"] .link-forgot {
  color: var(--brand-color);
}

.btn-login {
  border-radius: 0.5rem;
  padding: 0.625rem;
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--brand-color);
  border-color: var(--brand-color);
  color: #fff;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.btn-login:hover {
  background: color-mix(in srgb, var(--brand-color) 85%, black 15%);
  border-color: color-mix(in srgb, var(--brand-color) 85%, black 15%);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--brand-color) 35%, transparent);
  transform: translateY(-1px);
}

.brand-footer-tagline {
  margin: 1.75rem 0 0;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.3);
  text-align: center;
}

[data-bs-theme="light"] .brand-footer-tagline {
  color: #94a3b8;
}

@media (max-width: 480px) {
  .login-center {
    padding: 1.5rem 1.25rem;
  }

  .login-card {
    padding: 1.75rem 1.25rem;
  }
}