:root {
  --gradient-start: #ff8c3a;
  --gradient-end: #ff5f39;
  --surface: #ffffff;
  --surface-muted: #f6f7fb;
  --text-strong: #1f2432;
  --text-muted: #64748b;
  --border-soft: rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 28px 60px rgba(15, 23, 42, 0.16);
  --radius-large: 28px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  color: var(--text-strong);
  background: linear-gradient(120deg, #fff5ec 0%, #f5f7ff 55%, #eef4ff 100%);
  min-height: 100vh;
}

.auth-page {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.86)),
    url('https://images.unsplash.com/photo-1521540216272-a50305cd4421?auto=format&fit=crop&w=1600&q=80') center/cover fixed;
}

a {
  text-decoration: none;
  color: inherit;
}

a:hover {
  color: #111827;
}

.auth-shell {
  min-height: 100vh;
  padding: clamp(1.8rem, 3.5vw, 2.6rem);
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-layout {
  width: min(740px, 100%);
  display: grid;
  grid-template-columns: clamp(210px, 30vw, 260px) 1fr;
  border-radius: var(--radius-large);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-soft);
  min-height: clamp(360px, 52vh, 470px);
}

.auth-side {
  background: linear-gradient(160deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  padding: clamp(0.85rem, 2vw, 1.4rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: clamp(0.85rem, 1.6vw, 1.3rem);
  position: relative;
  isolation: isolate;
}

.auth-side::before {
  content: '';
  position: absolute;
  inset: -30% -40% -10% -40%;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.12) 0, transparent 55%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.18) 0, transparent 60%),
    radial-gradient(circle at 50% 80%, rgba(255, 255, 255, 0.16) 0, transparent 65%);
  opacity: 0.65;
  z-index: -1;
}

.side-body {
  display: flex;
  flex-direction: column;
  gap: clamp(0.85rem, 1.8vw, 1.2rem);
}

.side-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.side-logo i {
  font-size: 1.3rem;
}

.side-body h1 {
  font-size: clamp(1.55rem, 3vw, 2rem);
  line-height: 1.08;
  margin: 0;
}

.side-body p {
  margin: 0;
  max-width: 300px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
}

.side-highlights {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.side-highlights li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  font-size: 0.92rem;
}

.side-highlights i {
  font-size: 1rem;
}

.side-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: clamp(0.6rem, 1.4vw, 1rem);
}

.switch-link {
  padding: 0.45rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 0.85rem;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.switch-link.active,
.switch-link:hover {
  background: #fff;
  color: var(--gradient-end);
  border-color: transparent;
}


.auth-panel {
  background: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 0.55rem;
  width: 100%;
  padding: clamp(0.9rem, 1.8vw, 1.45rem) clamp(1.2rem, 2.3vw, 1.7rem);
  position: relative;
  height: 100%;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.auth-panel h2 {
  margin: 0;
  font-size: 1.4rem;
}

.auth-panel p.subtitle {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
  font-size: 0.92rem;
}

.auth-panel form {
  width: 100%;
  max-width: 360px;
  margin-bottom: 0.2rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.back-link:hover {
  color: var(--text-strong);
}

.form-group {
  margin-bottom: 0.85rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
  font-size: 0.86rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"] {
  width: 100%;
  padding: 0.78rem 0.95rem;
  border-radius: 14px;
  border: 1px solid var(--border-soft);
  font-size: 0.88rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  background: var(--surface-muted);
}

input:focus {
  outline: none;
  border-color: rgba(255, 111, 63, 0.65);
  box-shadow: 0 0 0 4px rgba(255, 135, 88, 0.20);
  background: #fff;
}

.password-field {
  position: relative;
}

.password-field button {
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
}

.password-field button:hover {
  color: var(--gradient-end);
}

.form-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin: 0.85rem 0 1.2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.checkbox input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--gradient-end);
}

.link {
  color: var(--gradient-end);
  font-weight: 600;
}

.link:hover {
  color: #c2410c;
}

.btn-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.btn-primary {
  width: fit-content;
  min-width: 150px;
  padding: 0.75rem 1.45rem;
  border-radius: 999px;
  border: none;
  font-size: 0.88rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(255, 111, 63, 0.28);
}

.btn-primary:disabled,
.btn-primary.loading {
  opacity: 1 !important;
  cursor: wait !important;
  transform: none !important;
  box-shadow: 0 8px 20px rgba(255, 111, 63, 0.2) !important;
  pointer-events: none;
  position: relative;
  -webkit-filter: none !important;
  filter: none !important;
  /* Prevent button from changing size */
  min-width: 150px;
  width: fit-content;
  padding: 0.75rem 1.45rem;
}

/* CRITICAL: Completely hide any spinner elements inside buttons */
.btn-primary .spinner,
.btn-primary.loading .spinner,
.btn-primary:disabled .spinner,
.btn-primary * .spinner,
.btn-primary * * .spinner {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  width: 0 !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  position: absolute !important;
  left: -9999px !important;
  overflow: hidden !important;
}

/* Prevent any pseudo-elements from adding content to loading buttons */
.btn-primary.loading::before,
.btn-primary.loading::after,
.btn-primary:disabled::before,
.btn-primary:disabled::after,
.btn-primary.loading *::before,
.btn-primary.loading *::after {
  display: none !important;
  content: none !important;
  visibility: hidden !important;
}

/* Lock button label - prevent any content changes */
.btn-primary.loading .btn-label,
.btn-primary:disabled .btn-label {
  /* Keep original text - don't allow any modifications */
  min-width: auto !important;
  width: auto !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
}

/* Prevent button from expanding - lock dimensions */
.btn-primary.loading,
.btn-primary:disabled {
  max-width: fit-content !important;
  overflow: hidden !important;
  position: relative !important;
}

/* Prevent any child elements from showing spinners */
.btn-primary.loading *,
.btn-primary:disabled * {
  position: relative !important;
}

.btn-primary.loading .spinner,
.btn-primary:disabled .spinner {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  visibility: hidden !important;
  opacity: 0 !important;
}

.btn-primary:disabled:hover,
.btn-primary.loading:hover {
  transform: none !important;
  box-shadow: 0 8px 20px rgba(255, 111, 63, 0.2) !important;
}

/* Screen-level loading overlay */
.screen-loading-overlay {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  background: rgba(255, 255, 255, 0.95) !important;
  -webkit-backdrop-filter: blur(4px) !important;
  backdrop-filter: blur(4px) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  z-index: 99999 !important;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.screen-loading-overlay.active {
  opacity: 1 !important;
  visibility: visible !important;
  display: flex !important;
}

.screen-loading-overlay .loading-content {
  text-align: center;
}

.screen-loading-overlay .loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 111, 63, 0.2);
  border-top-color: var(--gradient-end);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

.screen-loading-overlay .loading-text {
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 500;
  margin: 0;
}

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

[data-theme="dark"] .screen-loading-overlay {
  background: rgba(17, 24, 39, 0.95);
}

[data-theme="dark"] .screen-loading-overlay .loading-text {
  color: var(--text-primary);
}

/* Theme toggle on auth pages */
.auth-panel {
  position: relative;
}

.auth-panel .theme-toggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 10;
}

@media (max-width: 640px) {
  .auth-panel .theme-toggle {
    top: 0.5rem;
    right: 0.5rem;
  }
}

/* Remove duplicate .btn-primary.loading rule - already defined above */

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(170px, 1fr));
  gap: 0.65rem 0.8rem;
  margin-bottom: 0.05rem;
}

.form-grid .form-group {
  margin-bottom: 0;
}

.form-grid .span-2 {
  grid-column: span 2;
}

@media (max-width: 720px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-grid .span-2 {
    grid-column: auto;
  }
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.35rem;
}

.form-footer {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.form-footer p {
  margin: 0;
}

.form-actions .form-footer {
  display: inline-flex;
  align-items: center;
  text-align: left;
  max-width: none;
}

.form-footer a {
  color: var(--gradient-end);
  font-weight: 600;
}

.alert {
  padding: 0.85rem 1rem;
  border-radius: 14px;
  margin-bottom: 1.2rem;
  font-size: 0.92rem;
}

.alert[hidden] {
  display: none;
}

.alert-success {
  background: rgba(22, 163, 74, 0.12);
  color: #166534;
}

.alert-error {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
}

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

.d-none {
  display: none !important;
}

@media (max-width: 1024px) {
  .auth-layout {
    grid-template-columns: 1fr;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-soft);
  }

  .auth-side {
    border-radius: var(--radius-large) var(--radius-large) 0 0;
    gap: 1.1rem;
  }

  .auth-panel {
    padding: clamp(0.95rem, 2.8vw, 1.6rem);
    background: rgba(255, 255, 255, 0.96);
  }
}

@media (max-width: 640px) {
  .auth-shell {
    padding: 1.5rem;
  }

  .auth-layout {
    box-shadow: none;
  }

  .auth-side {
    padding: 1.6rem;
    text-align: center;
    align-items: center;
    gap: 1.2rem;
  }

  .side-body p {
    max-width: 100%;
  }

  .side-highlights {
    justify-items: center;
  }

  .side-switch {
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 0.8rem;
  }

  .auth-panel {
    padding: 1rem 0.9rem 1.2rem;
    align-items: center;
  }

  .auth-panel form {
    margin-left: auto;
    margin-right: auto;
  }

  .form-actions {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .form-actions .form-footer {
    text-align: center;
  }

  .back-link {
    align-self: center;
  }
}