/* ============================================
   LOGIN PAGE STYLES
   Discord Bot Admin - Modern Login Design
   ============================================ */

/* CSS Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Main Container */
.login-container {
  display: flex;
  min-height: 100vh;
  background-color: #262a2d;
}

/* ============================================
   LEFT PANEL: BRAND EXPERIENCE
   ============================================ */

.login-brand-panel {
  width: 40%;
  min-width: 480px;
  max-width: 600px;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1d2022 0%, #2f3336 100%);
}

/* Animated gradient overlay */
.login-brand-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(203, 78, 27, 0.15) 0%,
    transparent 50%
  ),
  radial-gradient(
    circle at 70% 80%,
    rgba(9, 142, 207, 0.12) 0%,
    transparent 50%
  );
  animation: gradient-shift 8s ease-in-out infinite alternate;
  z-index: 1;
}

@keyframes gradient-shift {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.8;
  }
  100% {
    transform: translate(20px, -20px) scale(1.1);
    opacity: 1;
  }
}

/* Floating particles */
.login-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: radial-gradient(circle, #cb4e1b 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0.3;
  animation: float-particle 15s infinite ease-in-out;
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { left: 30%; animation-delay: 2s; }
.particle:nth-child(3) { left: 50%; animation-delay: 4s; }
.particle:nth-child(4) { left: 70%; animation-delay: 6s; }
.particle:nth-child(5) { left: 90%; animation-delay: 8s; }

@keyframes float-particle {
  0%, 100% {
    transform: translateY(100vh) scale(0.5);
    opacity: 0;
  }
  10% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.3;
  }
  50% {
    transform: translateY(-10vh) scale(1);
    opacity: 0.5;
  }
}

.login-brand-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 3rem 2rem;
  text-align: center;
}

/* Logo */
.login-brand-logo {
  width: 140px;
  height: 140px;
  margin-bottom: 2rem;
  position: relative;
}

.login-brand-logo-container {
  width: 140px;
  height: 140px;
  border-radius: 24px;
  background: linear-gradient(135deg, #cb4e1b 0%, #e5591f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 10px 40px rgba(203, 78, 27, 0.3),
    0 0 60px rgba(203, 78, 27, 0.15);
  animation: logo-pulse 3s ease-in-out infinite;
  position: relative;
}

@keyframes logo-pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow:
      0 10px 40px rgba(203, 78, 27, 0.3),
      0 0 60px rgba(203, 78, 27, 0.15);
  }
  50% {
    transform: scale(1.05);
    box-shadow:
      0 15px 50px rgba(203, 78, 27, 0.4),
      0 0 80px rgba(203, 78, 27, 0.2);
  }
}

.login-brand-logo-icon {
  width: 88px;
  height: 88px;
  color: #ffffff;
}

/* Title */
.login-brand-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #d7d3d0;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #d7d3d0 0%, #a8a5a3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Tagline */
.login-brand-tagline {
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.6;
  color: #a8a5a3;
  margin-bottom: 3rem;
  max-width: 400px;
}

/* Feature list */
.login-brand-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
  max-width: 360px;
}

.login-brand-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: #a8a5a3;
  transition: color 0.2s ease;
}

.login-brand-feature:hover {
  color: #d7d3d0;
}

.login-brand-feature-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: #cb4e1b;
  flex-shrink: 0;
}

/* ============================================
   RIGHT PANEL: LOGIN FORM
   ============================================ */

.login-form-panel {
  flex: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  background-color: #262a2d;
}

.login-form-container {
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
}

/* Staggered entrance animation */
.login-form-container > * {
  opacity: 0;
  transform: translateY(12px);
  animation: fade-in-up 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.login-form-container > *:nth-child(1) { animation-delay: 0.1s; }
.login-form-container > *:nth-child(2) { animation-delay: 0.15s; }
.login-form-container > *:nth-child(3) { animation-delay: 0.2s; }
.login-form-container > *:nth-child(4) { animation-delay: 0.25s; }
.login-form-container > *:nth-child(5) { animation-delay: 0.3s; }
.login-form-container > *:nth-child(6) { animation-delay: 0.35s; }

@keyframes fade-in-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Form Header */
.login-form-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.login-form-title {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1.3;
  color: #d7d3d0;
  margin-bottom: 0.5rem;
}

.login-form-subtitle {
  font-size: 0.9375rem;
  color: #a8a5a3;
}

/* ============================================
   ERROR ALERT
   ============================================ */

.login-error-alert {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.1) 0%,
    rgba(239, 68, 68, 0.05) 100%
  );
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-left: 4px solid #ef4444;
  border-radius: 8px;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  animation: slide-down 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hide validation summary when empty */
.validation-summary-errors:not(.validation-summary-errors) {
  display: none;
}

.validation-summary-valid {
  display: none;
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-error-alert.shake {
  animation: shake 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

.login-error-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: #ef4444;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.login-error-content {
  flex: 1;
}

.login-error-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #ef4444;
  margin-bottom: 0.25rem;
}

.login-error-message {
  font-size: 0.875rem;
  color: #ef4444;
  line-height: 1.5;
  opacity: 0.9;
}

/* ============================================
   DISCORD OAUTH BUTTON
   ============================================ */

.btn-discord-oauth {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #ffffff;
  background: linear-gradient(135deg, #5865F2 0%, #4752C4 100%);
  border: 1px solid #5865F2;
  border-radius: 8px;
  box-shadow:
    0 4px 12px rgba(88, 101, 242, 0.3),
    0 0 0 0 rgba(88, 101, 242, 0.4);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-discord-oauth:hover {
  background: linear-gradient(135deg, #6674F4 0%, #5865F2 100%);
  border-color: #6674F4;
  box-shadow:
    0 6px 16px rgba(88, 101, 242, 0.4),
    0 0 0 0 rgba(88, 101, 242, 0.6);
  transform: translateY(-2px);
}

.btn-discord-oauth:active {
  transform: translateY(0);
  box-shadow:
    0 2px 8px rgba(88, 101, 242, 0.4),
    0 0 0 0 rgba(88, 101, 242, 0.4);
}

.btn-discord-oauth:focus-visible {
  outline: none;
  box-shadow:
    0 4px 12px rgba(88, 101, 242, 0.3),
    0 0 0 3px rgba(9, 142, 207, 0.4);
}

.btn-discord-oauth:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Shimmer effect */
.btn-discord-oauth::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-discord-oauth:hover::before {
  transform: translateX(100%);
}

.btn-discord-oauth-icon {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.btn-discord-oauth:hover .btn-discord-oauth-icon {
  transform: scale(1.1);
}

/* Loading state */
.btn-discord-oauth.loading {
  pointer-events: none;
}

.btn-discord-oauth.loading .btn-discord-oauth-icon {
  animation: spin 1s linear infinite;
}

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

/* ============================================
   DIVIDER
   ============================================ */

.login-divider {
  position: relative;
  margin: 2rem 0;
  text-align: center;
}

.login-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    #3f4447 20%,
    #3f4447 80%,
    transparent 100%
  );
}

.login-divider-text {
  position: relative;
  display: inline-block;
  padding: 0 1rem;
  background-color: #262a2d;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #7a7876;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   FORM INPUTS (FLOATING LABEL)
   ============================================ */

.form-group-floating {
  position: relative;
  margin-bottom: 1.5rem;
}

.form-input-floating {
  width: 100%;
  padding: 1.25rem 1rem 0.5rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: #d7d3d0;
  background-color: #1d2022;
  border: 1px solid #3f4447;
  border-radius: 8px;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input-floating::placeholder {
  color: transparent;
}

.form-input-floating:hover {
  border-color: #098ecf;
}

.form-input-floating:focus {
  border-color: #098ecf;
  background-color: #262a2d;
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.1),
    0 0 0 3px rgba(9, 142, 207, 0.15);
  animation: input-glow 0.6s ease-out;
}

@keyframes input-glow {
  0% {
    box-shadow:
      inset 0 1px 2px rgba(0, 0, 0, 0.1),
      0 0 0 0 rgba(9, 142, 207, 0);
  }
  50% {
    box-shadow:
      inset 0 1px 2px rgba(0, 0, 0, 0.1),
      0 0 0 6px rgba(9, 142, 207, 0.15);
  }
  100% {
    box-shadow:
      inset 0 1px 2px rgba(0, 0, 0, 0.1),
      0 0 0 3px rgba(9, 142, 207, 0.15);
  }
}

.form-label-floating {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #7a7876;
  background-color: transparent;
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: left center;
}

.form-input-floating:focus + .form-label-floating,
.form-input-floating:not(:placeholder-shown) + .form-label-floating {
  transform: translateY(-0.625rem) scale(0.85);
  color: #098ecf;
  font-weight: 600;
}

/* Error state */
.form-input-floating.error {
  border-color: #ef4444;
  background-color: rgba(239, 68, 68, 0.05);
}

.form-input-floating.error:focus {
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.1),
    0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-input-floating.error + .form-label-floating {
  color: #ef4444;
}

.form-error {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  color: #ef4444;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.2s ease;
}

.form-input-floating.error ~ .form-error {
  opacity: 1;
  transform: translateY(0);
}

/* Success state */
.form-input-floating.success {
  border-color: #10b981;
}

.form-input-floating.success:focus {
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.1),
    0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* ============================================
   PASSWORD FIELD WITH TOGGLE
   ============================================ */

.password-group {
  position: relative;
}

.password-group .form-input-floating {
  padding-right: 3rem;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 0.75rem;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: #7a7876;
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.password-toggle:hover {
  color: #a8a5a3;
  background-color: rgba(122, 120, 118, 0.1);
}

.password-toggle:focus-visible {
  outline: 2px solid #098ecf;
  outline-offset: 2px;
  color: #098ecf;
}

.password-toggle-icon {
  width: 1.25rem;
  height: 1.25rem;
  transition: opacity 0.15s ease;
}

.password-toggle-icon.hidden {
  display: none;
}

/* ============================================
   REMEMBER ME CHECKBOX
   ============================================ */

.remember-me-container {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.remember-me-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.remember-me-checkbox-custom {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid #3f4447;
  border-radius: 4px;
  background-color: #1d2022;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
  cursor: pointer;
}

.remember-me-checkbox:hover + .remember-me-checkbox-custom {
  border-color: #098ecf;
}

.remember-me-checkbox:focus-visible + .remember-me-checkbox-custom {
  outline: 2px solid #098ecf;
  outline-offset: 2px;
}

.remember-me-checkbox:checked + .remember-me-checkbox-custom {
  background-color: #cb4e1b;
  border-color: #cb4e1b;
}

.remember-me-checkmark {
  width: 0.875rem;
  height: 0.875rem;
  color: #ffffff;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.remember-me-checkbox:checked + .remember-me-checkbox-custom .remember-me-checkmark {
  opacity: 1;
  transform: scale(1);
}

.remember-me-label {
  font-size: 0.875rem;
  color: #a8a5a3;
  cursor: pointer;
  user-select: none;
  transition: color 0.2s ease;
}

.remember-me-label:hover {
  color: #d7d3d0;
}

/* ============================================
   SUBMIT BUTTON
   ============================================ */

.btn-submit-login {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(135deg, #cb4e1b 0%, #e5591f 100%);
  border: 1px solid #cb4e1b;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(203, 78, 27, 0.3);
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-submit-login:hover {
  background: linear-gradient(135deg, #e5591f 0%, #cb4e1b 100%);
  box-shadow: 0 4px 12px rgba(203, 78, 27, 0.4);
  transform: translateY(-1px);
}

.btn-submit-login:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(203, 78, 27, 0.3);
}

.btn-submit-login:focus-visible {
  outline: none;
  box-shadow:
    0 2px 8px rgba(203, 78, 27, 0.3),
    0 0 0 3px rgba(9, 142, 207, 0.4);
}

.btn-submit-login:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Loading state */
.btn-submit-login.loading {
  pointer-events: none;
}

.btn-submit-login.loading .btn-text {
  visibility: hidden;
}

.btn-submit-login.loading::after {
  content: "";
  position: absolute;
  width: 1rem;
  height: 1rem;
  border: 2px solid #ffffff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Ripple effect */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  opacity: 0;
  pointer-events: none;
}

.btn-ripple:active::before {
  transform: translate(-50%, -50%) scale(2);
  opacity: 1;
  transition: transform 0.5s ease, opacity 0.3s ease;
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */

/* Tablet: 768px - 1023px */
@media (min-width: 768px) and (max-width: 1023px) {
  .login-brand-panel {
    width: 35%;
    min-width: 360px;
  }
}

/* Mobile: < 768px */
@media (max-width: 767px) {
  .login-container {
    flex-direction: column;
  }

  .login-brand-panel {
    width: 100%;
    min-width: auto;
    max-width: 100%;
    min-height: auto;
    max-height: 25vh;
    min-height: 180px;
    padding: 2rem 1.5rem;
  }

  .login-brand-content {
    min-height: auto;
    padding: 0;
    flex-direction: row;
    gap: 1.5rem;
    text-align: left;
  }

  .login-brand-logo {
    margin-bottom: 0;
    width: auto;
    height: auto;
  }

  .login-brand-logo-container {
    width: 80px;
    height: 80px;
    border-radius: 16px;
  }

  .login-brand-logo-icon {
    width: 50px;
    height: 50px;
  }

  .login-brand-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
  }

  .login-brand-tagline {
    font-size: 0.875rem;
    margin-bottom: 0;
  }

  .login-brand-features {
    display: none;
  }

  .login-particles {
    display: none;
  }

  .login-form-panel {
    min-height: auto;
    padding: 2rem 1.5rem;
    flex: 1;
  }

  .login-form-header {
    margin-bottom: 1.5rem;
  }

  .login-form-title {
    font-size: 1.5rem;
  }

  .login-form-subtitle {
    font-size: 0.875rem;
  }
}

/* Large Desktop: 1440px and up */
@media (min-width: 1440px) {
  .login-brand-panel {
    max-width: 600px;
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* Keep essential loading animations */
  .btn-submit-login.loading::after,
  .btn-discord-oauth.loading .btn-discord-oauth-icon {
    animation-duration: 1s !important;
  }
}