:root {
  --font-family-base: "Montserrat", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --color-primary: #3b82f6;
  --color-primary-dark: #2666cf;
  --color-primary-soft: #dbeafe;
  --color-bg-start: #2f6fdd;
  --color-bg-end: #2a59ad;
  --color-bg-bottom: #eef2f9;
  --color-surface: rgba(248, 250, 252, 0.88);
  --color-surface-solid: #f4f6fb;
  --color-border: rgba(15, 23, 42, 0.14);
  --color-text: #0f172a;
  --color-muted: #5a6478;
  --color-success: #166534;
  --color-success-bg: #ecfdf3;
  --color-success-border: #86efac;
  --color-danger: #b42318;
  --color-danger-bg: #fff1f2;
  --color-danger-border: #fda4af;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 18px 44px rgba(15, 23, 42, 0.22);
  --shadow-soft: 0 8px 20px rgba(15, 23, 42, 0.12);
  --blur-card: 8px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 2.5rem;
  --transition-fast: 160ms ease;
}

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

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  color: var(--color-text);
  background:
    linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 58%, var(--color-bg-bottom) 58%);
  overflow-x: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

body::before,
body::after {
  content: "";
  position: fixed;
  pointer-events: none;
  z-index: 0;
}

body::before {
  width: min(72vw, 460px);
  height: min(72vw, 460px);
  top: 22%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  border-radius: 34px;
  background: linear-gradient(150deg, rgba(30, 84, 182, 0.7), rgba(17, 62, 139, 0.88));
  box-shadow: 0 16px 38px rgba(17, 62, 139, 0.28);
}

body::after {
  width: min(100vw, 850px);
  height: 240px;
  left: 50%;
  top: calc(58% - 120px);
  transform: translateX(-50%);
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.38) 0%, rgba(255, 255, 255, 0) 68%);
}

.app-shell {
  position: relative;
  z-index: 2;
  width: 100%;
  flex: 1;
  padding: clamp(2.25rem, 4.5vw, 3.25rem) var(--space-4) var(--space-7);
  display: flex;
  justify-content: center;
}

.page {
  width: min(100%, 480px);
}

.page-header {
  margin-bottom: var(--space-7);
  color: #ffffff;
}

.brand {
  margin: 0 0 var(--space-2);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: 0.96;
}

.page-title {
  margin: 0;
  font-size: clamp(1.9rem, 5.5vw, 2.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: var(--space-3) 0 0;
  font-size: clamp(1rem, 2.8vw, 1.18rem);
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.93);
  max-width: 34ch;
}

.card {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 1.8rem);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(var(--blur-card));
}

.card + .card {
  margin-top: var(--space-4);
}

.field {
  margin-bottom: var(--space-5);
}

.field:last-child {
  margin-bottom: 0;
}

.label {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: 0.96rem;
  color: var(--color-muted);
  font-weight: 600;
}

.input-wrap {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.input-wrap:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.input-wrap.has-error {
  border-color: var(--color-danger);
}

.input-wrap.has-error:focus-within {
  box-shadow: 0 0 0 4px rgba(180, 35, 24, 0.17);
}

.input-icon {
  margin-left: var(--space-4);
  width: 1.1rem;
  height: 1.1rem;
  color: #7b8598;
  flex-shrink: 0;
}

.input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 0.86rem 0.9rem 0.86rem 0.75rem;
  color: var(--color-text);
  font-size: 1rem;
  border-radius: inherit;
}

.input::placeholder {
  color: #8d96a7;
}

.input:focus {
  outline: none;
}

.input-action {
  border: 0;
  background: transparent;
  color: var(--color-primary-dark);
  width: 2.1rem;
  height: 2.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin-right: var(--space-2);
  border-radius: var(--radius-pill);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.input-action:hover {
  background: rgba(59, 130, 246, 0.12);
}

.input-action:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.34);
  outline-offset: 1px;
}

.input-action.is-active {
  color: #1d4fa4;
}

.input-action-icon {
  width: 1.05rem;
  height: 1.05rem;
}

.icon-eye-off {
  display: none;
}

.input-action.is-active .icon-eye-open {
  display: none;
}

.input-action.is-active .icon-eye-off {
  display: block;
}

.helper {
  display: block;
  margin-top: var(--space-2);
  font-size: 0.86rem;
  color: var(--color-muted);
}

.field-error {
  display: block;
  min-height: 1.2rem;
  margin-top: var(--space-2);
  font-size: 0.86rem;
  color: var(--color-danger);
}

.btn-group {
  display: grid;
  gap: var(--space-3);
}

#forgot-form .field {
  margin-bottom: calc(var(--space-5) - 20px);
}

.btn {
  border: 0;
  width: 100%;
  min-height: 3.1rem;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.8rem 1.1rem;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.btn:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.45);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(180deg, #4d8cf8 0%, var(--color-primary) 100%);
  color: #ffffff;
  box-shadow: 0 9px 16px rgba(38, 102, 207, 0.3);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(180deg, #3f82ef 0%, var(--color-primary-dark) 100%);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.78);
  color: var(--color-primary-dark);
  border: 1px solid rgba(38, 102, 207, 0.35);
}

.btn-secondary:hover:not(:disabled) {
  background: #ffffff;
  transform: translateY(-1px);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  transform: none;
}

.btn-spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.58);
  border-top-color: #ffffff;
  border-radius: 50%;
  display: none;
  animation: spin 0.8s linear infinite;
}

.btn.is-loading .btn-spinner {
  display: inline-block;
}

.btn.is-loading .btn-label {
  letter-spacing: 0.01em;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.status-text {
  margin: 0 0 var(--space-5);
  color: var(--color-muted);
  font-size: 0.98rem;
  font-weight: 600;
}

.alert-slot {
  margin-top: var(--space-4);
}

.alert {
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  padding: 0.78rem 0.9rem;
  font-size: 0.95rem;
  line-height: 1.45;
}

.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border-color: var(--color-success-border);
}

.alert-error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border-color: var(--color-danger-border);
}

.text-link {
  color: var(--color-primary-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.text-link:hover {
  color: #164ea8;
}

.text-link:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.4);
  outline-offset: 2px;
  border-radius: 4px;
}

.card-actions {
  margin-top: var(--space-4);
}

.center-link {
  display: inline-block;
  margin-top: var(--space-4);
}

.hidden {
  display: none !important;
}

.sr-only {
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  white-space: nowrap;
}

.site-footer {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #1f2a44;
  padding: var(--space-4) var(--space-4) var(--space-6);
}

.site-footer p {
  margin: 0;
  font-size: 0.9rem;
}

.site-footer p + p {
  margin-top: var(--space-2);
  opacity: 0.93;
}

@media (min-width: 780px) {
  body::before {
    top: 23%;
    width: 490px;
    height: 490px;
  }

  .app-shell {
    align-items: center;
    min-height: calc(100vh - 98px);
  }

  .page {
    width: min(100%, 520px);
  }

  .card {
    padding: 1.95rem;
    border-radius: 24px;
  }
}