/* Copyright (c) 2025-2026 Spwig contributors. Licensed under AGPL-3.0. */

/* =============================================
   ENTRANCE PAGES (Login / Signup / Logout)
   =============================================
   Modern authentication pages with gradient
   background and theme token integration.
   CSP-compliant, no inline styles.
   ============================================= */

/* --- Page Container --- */

.entrance-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--theme-color-primary) 0%, #7b45dd 50%, #f411c7 100%);
  position: relative;
  overflow: hidden;
  padding: var(--theme-space-4);
}

/* --- Animated Background Gradient --- */

.entrance-background {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 0% 50%, rgba(37, 99, 235, 0.6) 0%, transparent 60%),
    radial-gradient(ellipse at 100% 50%, rgba(244, 17, 199, 0.5) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(123, 69, 221, 0.5) 0%, transparent 60%),
    linear-gradient(135deg, var(--theme-color-primary) 0%, #7b45dd 50%, #f411c7 100%);
  background-size:
    200% 200%,
    200% 200%,
    200% 200%,
    100% 100%;
  animation:
    mesh-shift 30s ease-in-out infinite,
    mesh-rotate 60s linear infinite;
  z-index: 0;
}

@keyframes mesh-shift {
  0%,
  100% {
    background-position:
      0% 50%,
      100% 50%,
      50% 100%,
      0% 0%;
  }
  33% {
    background-position:
      100% 0%,
      0% 100%,
      50% 0%,
      0% 0%;
  }
  66% {
    background-position:
      50% 100%,
      50% 0%,
      0% 50%,
      0% 0%;
  }
}

@keyframes mesh-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* --- Content Container --- */

.entrance-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
}

/* --- Glassmorphism Card --- */

.entrance-card {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--theme-radius-xl);
  padding: var(--theme-space-8);
  box-shadow: var(--theme-shadow-xl);
}

/* --- Header --- */

.entrance-header {
  text-align: center;
  margin-bottom: var(--theme-space-8);
}

.entrance-logo {
  max-width: 160px;
  height: auto;
  margin: 0 auto var(--theme-space-6);
  display: block;
}

.entrance-title {
  font-size: var(--theme-font-size-2xl);
  font-weight: var(--theme-font-weight-bold);
  color: var(--theme-color-text-inverse);
  margin: 0 0 var(--theme-space-2);
}

.entrance-subtitle {
  font-size: var(--theme-font-size-base);
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* --- Alert Messages --- */

.entrance-alert {
  padding: var(--theme-element-alert-padding);
  border-radius: var(--theme-element-alert-radius);
  margin-bottom: var(--theme-space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--theme-element-alert-gap);
  font-size: var(--theme-element-alert-font-size);
  font-weight: var(--theme-element-alert-font-weight);
}

.entrance-alert i {
  font-size: var(--theme-element-alert-icon-size);
  flex-shrink: 0;
}

.entrance-alert-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ffb4b4;
}

.entrance-alert-success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #a7f3d0;
}

.entrance-alert-info {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #bfdbfe;
}

/* --- Form --- */

.entrance-form {
  margin-bottom: var(--theme-space-6);
}

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

.entrance-label {
  display: flex;
  align-items: center;
  gap: var(--theme-space-2);
  font-size: var(--theme-element-form-label-size);
  font-weight: var(--theme-font-weight-medium);
  color: var(--theme-color-text-inverse);
  margin-bottom: var(--theme-space-2);
}

.entrance-label i {
  font-size: var(--theme-font-size-sm);
  opacity: 0.8;
}

.entrance-input-wrapper {
  position: relative;
}

.entrance-input-wrapper input {
  width: 100%;
  padding: var(--theme-element-form-input-padding);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--theme-element-form-input-radius);
  color: var(--theme-color-text-inverse);
  font-size: var(--theme-font-size-base);
  font-family: var(--theme-font-family-body);
  transition: all var(--theme-transition-duration-base) var(--theme-transition-easing-default);
}

.entrance-input-wrapper input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.entrance-input-wrapper input:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

/* Password Toggle Button */

.password-toggle {
  position: absolute;
  right: var(--theme-space-3);
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  padding: var(--theme-space-2);
  font-size: var(--theme-font-size-lg);
  line-height: 1;
  transition: color var(--theme-transition-duration-fast);
}

.password-toggle:hover {
  color: rgba(255, 255, 255, 0.9);
}

.password-toggle:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
  border-radius: var(--theme-radius-sm);
}

/* Field Error Messages */

.entrance-field-error {
  margin-top: var(--theme-space-2);
  font-size: var(--theme-font-size-sm);
  color: #ffb4b4;
}

/* Options Row (Remember Me + Forgot Password) */

.entrance-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--theme-space-6);
}

.entrance-remember {
  display: flex;
  align-items: center;
  gap: var(--theme-space-2);
  font-size: var(--theme-font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
}

.entrance-remember input[type='checkbox'] {
  width: var(--theme-element-form-checkbox-size);
  height: var(--theme-element-form-checkbox-size);
  cursor: pointer;
  accent-color: var(--theme-color-primary);
}

.entrance-link {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--theme-font-size-sm);
  text-decoration: underline;
  transition: opacity var(--theme-transition-duration-fast);
}

.entrance-link:hover {
  opacity: 0.8;
}

/* --- Submit Button --- */

.entrance-submit {
  width: 100%;
  padding: var(--theme-element-form-button-padding-y) var(--theme-element-form-button-padding-x);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--theme-element-form-button-radius);
  color: var(--theme-color-text-inverse);
  font-size: var(--theme-font-size-base);
  font-weight: var(--theme-font-weight-semibold);
  font-family: var(--theme-font-family-body);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--theme-space-2);
  transition: all var(--theme-transition-duration-base) var(--theme-transition-easing-default);
}

.entrance-submit:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.entrance-submit:active {
  transform: translateY(0);
}

.entrance-submit:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

.entrance-submit:disabled,
.entrance-submit-loading {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.entrance-submit-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* --- Divider --- */

.entrance-divider {
  position: relative;
  text-align: center;
  margin: var(--theme-space-8) 0;
  font-size: var(--theme-font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.entrance-divider::before,
.entrance-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 2rem);
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
}

.entrance-divider::before {
  left: 0;
}

.entrance-divider::after {
  right: 0;
}

.entrance-divider span {
  background: rgba(255, 255, 255, 0.12);
  padding: 0 var(--theme-space-3);
  border-radius: var(--theme-radius-full);
}

/* --- Social Auth Buttons --- */

.entrance-social {
  margin-bottom: var(--theme-space-6);
}

.social-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--theme-space-3);
}

.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--theme-space-3);
  padding: var(--theme-space-3) var(--theme-space-6);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--theme-radius-md);
  color: var(--theme-color-text-inverse);
  font-size: var(--theme-font-size-base);
  font-weight: var(--theme-font-weight-medium);
  font-family: var(--theme-font-family-body);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--theme-transition-duration-base) var(--theme-transition-easing-default);
}

.social-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.social-btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

.social-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Subtle provider-specific hover colors */
.social-btn-google:hover {
  border-color: rgba(66, 133, 244, 0.5);
}

.social-btn-apple:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

.social-btn-microsoft:hover {
  border-color: rgba(0, 120, 212, 0.5);
}

.social-btn-loading {
  opacity: 0.6;
  pointer-events: none;
}

/* --- Footer --- */

.entrance-footer {
  text-align: center;
  margin-top: var(--theme-space-6);
}

.entrance-footer-text {
  font-size: var(--theme-font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 var(--theme-space-4);
}

.entrance-footer-text .entrance-link {
  font-weight: var(--theme-font-weight-medium);
  text-decoration: none;
}

.entrance-footer-text .entrance-link:hover {
  text-decoration: underline;
}

.entrance-footer-powered {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--theme-space-2);
  font-size: var(--theme-font-size-xs);
  color: rgba(255, 255, 255, 0.6);
}

.entrance-footer-powered-text {
  opacity: 0.8;
}

.entrance-footer-favicon {
  width: 16px;
  height: 16px;
  opacity: 0.8;
}

/* --- Responsive Design --- */

@media (max-width: 768px) {
  .entrance-page {
    padding: var(--theme-space-3);
  }

  .entrance-card {
    padding: var(--theme-space-6) var(--theme-space-4);
  }

  .entrance-header {
    margin-bottom: var(--theme-space-6);
  }

  .entrance-logo {
    max-width: 130px;
    margin-bottom: var(--theme-space-4);
  }

  .entrance-title {
    font-size: var(--theme-font-size-xl);
  }

  .entrance-subtitle {
    font-size: var(--theme-font-size-sm);
  }

  .social-btn {
    font-size: var(--theme-font-size-sm);
    padding: var(--theme-space-2) var(--theme-space-4);
  }

  .entrance-options {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--theme-space-3);
  }
}

@media (max-height: 700px) {
  .entrance-page {
    align-items: flex-start;
    padding-top: var(--theme-space-8);
    padding-bottom: var(--theme-space-8);
  }

  .entrance-logo {
    max-width: 120px;
    margin-bottom: var(--theme-space-3);
  }

  .entrance-header {
    margin-bottom: var(--theme-space-4);
  }

  .entrance-divider {
    margin: var(--theme-space-4) 0;
  }
}

/* --- Accessibility --- */

@media (prefers-reduced-motion: reduce) {
  .entrance-background {
    animation: none;
  }

  .entrance-card,
  .entrance-submit,
  .entrance-input-wrapper input,
  .social-btn,
  .password-toggle {
    transition: none;
  }
}

/* --- Dark Mode Support --- */

@media (prefers-color-scheme: dark) {
  .entrance-card {
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(32px);
    -webkit-backdrop-filter: blur(32px);
  }

  .entrance-input-wrapper input {
    background: rgba(0, 0, 0, 0.15);
  }
}