:root {
  --white: #ffffff;
  --off-white: #fafafa;
  --gray-50: #f5f5f5;
  --gray-100: #e5e5e5;
  --gray-200: #d4d4d4;
  --gray-300: #a3a3a3;
  --gray-400: #737373;
  --gray-500: #525252;
  --gray-600: #404040;
  --gray-700: #262626;
  --gray-800: #171717;
  --black: #0a0a0a;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #b91c1c;
  --radius-xl: 1.75rem;
  --radius-lg: 1.125rem;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-display: "Space Grotesk", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--black);
  background: var(--gray-50);
  overflow-x: hidden;
}

/* Ambient — soft monochrome */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 50% at 15% 30%, rgba(0, 0, 0, 0.04), transparent 55%),
    radial-gradient(ellipse 60% 45% at 85% 70%, rgba(0, 0, 0, 0.05), transparent 55%),
    linear-gradient(165deg, var(--off-white) 0%, var(--gray-50) 50%, #f0f0f0 100%);
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 15%, transparent 75%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  animation: float 14s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  top: -10%;
  left: -8%;
  background: rgba(0, 0, 0, 0.06);
}

.orb-2 {
  width: 340px;
  height: 340px;
  right: -6%;
  top: 35%;
  background: rgba(0, 0, 0, 0.05);
  animation-delay: -4s;
}

.orb-3 {
  width: 260px;
  height: 260px;
  bottom: -8%;
  left: 40%;
  background: rgba(255, 255, 255, 0.9);
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -14px) scale(1.04); }
  66% { transform: translate(-12px, 10px) scale(0.98); }
}

.login-shell {
  position: relative;
  z-index: 1;
}

.login-panel {
  max-width: 1080px;
  min-height: min(680px, calc(100vh - 2rem));
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-100);
  background: var(--white);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.03) inset,
    0 24px 48px -20px rgba(0, 0, 0, 0.12),
    0 8px 16px -8px rgba(0, 0, 0, 0.06);
  animation: panelIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
}

/* Brand — black panel */
.brand-panel {
  padding: 2.5rem;
  background: var(--black);
  color: var(--white);
  border-right: 1px solid var(--gray-800);
  position: relative;
  overflow: hidden;
}

.brand-panel::before {
  content: "";
  position: absolute;
  top: -35%;
  right: -15%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06), transparent 70%);
  pointer-events: none;
}

.brand-panel::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
}

.brand-mark {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand-panel .brand-name,
.mobile-brand .brand-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--white);
}

.mobile-brand .brand-name {
  color: var(--black);
}

.brand-panel .brand-product {
  display: block;
  font-size: 0.8rem;
  color: var(--gray-300);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mobile-brand .brand-product {
  color: var(--gray-500);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.75);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.brand-tag {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-300);
}

.brand-headline {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  max-width: 22rem;
  color: var(--white);
}

.brand-copy {
  color: var(--gray-400);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 24rem;
  margin-bottom: 2rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.feature-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.65rem;
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.feature-card strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--white);
}

.feature-card small {
  color: var(--gray-400);
  font-size: 0.75rem;
}

.brand-stats {
  margin-top: 0.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
}

.stat-label {
  font-size: 0.7rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Form — white panel */
.form-panel {
  padding: 2.5rem 2rem;
  background: var(--white);
  color: var(--black);
}

.form-wrap {
  max-width: 380px;
  margin: 0 auto;
  animation: formIn 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
}

@keyframes formIn {
  from {
    opacity: 0;
    transform: translateX(12px);
  }
}

.form-badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-600);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 999px;
}

.form-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  line-height: 1.15;
  color: var(--black);
}

.form-subtitle {
  color: var(--gray-500);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.alert-glass {
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
}

.field-group {
  margin-bottom: 1.25rem;
}

.field-group--email {
  margin-bottom: 0.5rem;
}

.field-group--password {
  margin-top: 0.25rem;
}

.field-group--password .field-label {
  margin-bottom: 0.5rem;
}

.forgot-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.5rem;
  margin-bottom: 0.25rem;
}

.btn-forgot {
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.field-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

.field-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s;
}

.field-link:hover {
  color: var(--gray-600);
}

.input-shell {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1rem;
  color: var(--gray-400);
  pointer-events: none;
  z-index: 2;
  transition: color 0.2s;
}

.field-input {
  width: 100%;
  height: 3.25rem;
  padding: 0 2.75rem 0 2.75rem;
  font-size: 0.95rem;
  color: var(--black);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field-input::placeholder {
  color: var(--gray-300);
}

.field-input:focus {
  outline: none;
  background: var(--white);
  border-color: var(--black);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.06);
}

.input-shell:focus-within .input-icon {
  color: var(--black);
}

.btn-icon {
  position: absolute;
  right: 0.65rem;
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: none;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--gray-400);
  transition: color 0.15s, background 0.15s;
}

.btn-icon:hover {
  color: var(--black);
  background: var(--gray-50);
}

.remember-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--gray-500);
  cursor: pointer;
  user-select: none;
}

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

.remember-box {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 0.35rem;
  border: 1px solid var(--gray-200);
  background: var(--white);
  flex-shrink: 0;
  transition: all 0.2s;
  position: relative;
}

.remember-check:checked + .remember-box {
  background: var(--black);
  border-color: var(--black);
}

.remember-check:checked + .remember-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 9px;
  border: solid var(--white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.btn-glow {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 3.25rem;
  padding: 0 1.5rem;
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
  background: var(--black);
  box-shadow:
    0 4px 14px -2px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(0, 0, 0, 0.05) inset;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-glow:hover:not(:disabled) {
  transform: translateY(-2px);
  background: var(--gray-800);
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.3);
  color: var(--white);
}

.btn-glow:active:not(:disabled) {
  transform: translateY(0);
  background: var(--black);
}

.btn-glow:disabled {
  opacity: 0.55;
}

.btn-shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 60%
  );
  transform: translateX(-100%);
  animation: shine 4s ease-in-out infinite;
}

@keyframes shine {
  0%, 70%, 100% { transform: translateX(-100%); }
  85% { transform: translateX(100%); }
}

.btn-arrow {
  transition: transform 0.2s;
}

.btn-glow:hover:not(:disabled) .btn-arrow {
  transform: translateX(4px);
}

.form-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.75rem;
  font-size: 0.78rem;
  color: var(--gray-400);
}

.shield-icon {
  font-size: 0.9rem;
  opacity: 0.7;
  filter: grayscale(1);
}

.btn-glow .spinner-border {
  width: 1rem;
  height: 1rem;
  border-width: 2px;
}

.btn-glow.loading .btn-text,
.btn-glow.loading .btn-arrow {
  opacity: 0;
}

@media (max-width: 991.98px) {
  .login-panel {
    min-height: auto;
    max-width: 440px;
  }

  .form-panel {
    padding: 2rem 1.5rem;
  }

  .form-title {
    font-size: 1.75rem;
  }
}

@media (max-width: 575.98px) {
  .login-shell {
    padding: 0.75rem !important;
  }

  .login-panel {
    border-radius: 1.25rem;
  }

  .form-panel {
    padding: 1.5rem 1.25rem;
  }
}

/* Forgot password modal */
.forgot-modal {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 48px -16px rgba(0, 0, 0, 0.2);
}

.forgot-modal .modal-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--black);
}

.forgot-modal-text {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.55;
}

.forgot-success {
  text-align: center;
  padding: 0.5rem 0 0.25rem;
}

.forgot-success-icon {
  display: inline-grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  border-radius: 50%;
  background: #ecfdf5;
  color: #16a34a;
  font-size: 1.25rem;
  font-weight: 700;
  border: 1px solid #bbf7d0;
}

.forgot-success-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--black);
  margin-bottom: 0.5rem;
}

#forgotSuccessMessage strong {
  color: var(--black);
  font-weight: 600;
}

@media (prefers-reduced-motion: reduce) {
  .orb,
  .login-panel,
  .form-wrap,
  .btn-shine,
  .status-dot {
    animation: none;
  }
}