/* ==========================================================================
   SGP Auth Module — Stylesheet
   Depends on: panel-core.css (design tokens must be loaded first)
   ========================================================================== */

/* --------------------------------------------------------------------------
   Auth Body & Page Wrapper
   -------------------------------------------------------------------------- */

body.sgp-auth-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--sgp-bg);
  padding: 24px 16px;
  font-family: "Vazirmatn";
}

.sgp-auth-page-wrapper {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

/* --------------------------------------------------------------------------
   Brand Logo
   -------------------------------------------------------------------------- */

.sgp-brand-logo {
  text-align: center;
  margin-bottom: 20px;
}

.sgp-brand-logo a {
  text-decoration: none;
  color: var(--sgp-text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.sgp-brand-logo h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--sgp-text);
}

.sgp-auth-site-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--sgp-radius-sm);
  margin-bottom: 8px;
}

.sgp-brand-logo img {
  max-height: 52px;
  width: auto;
}

/* --------------------------------------------------------------------------
   Auth Card
   -------------------------------------------------------------------------- */

.sgp-auth-card {
  width: 100%;
  background: var(--sgp-surface);
  border-radius: var(--sgp-radius-lg);
  box-shadow:
    0 0 0 1px var(--sgp-border),
    0 8px 32px rgba(0, 0, 0, 0.06),
    0 2px 8px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   Auth Tabs Navigation
   -------------------------------------------------------------------------- */

.sgp-auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--sgp-border);
  background: var(--sgp-surface-2);
}

.sgp-auth-tab-btn {
  flex: 1;
  padding: 16px 20px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: "Vazirmatn", sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--sgp-text-secondary);
  position: relative;
  transition:
    color var(--sgp-transition),
    background var(--sgp-transition);
  letter-spacing: 0.01em;
}

.sgp-auth-tab-btn::after {
  content: "";
  position: absolute;
  bottom: -1px;
  right: 16px;
  left: 16px;
  height: 2px;
  background: var(--sgp-primary);
  border-radius: 2px 2px 0 0;
  transform: scaleX(0);
  transition: transform var(--sgp-transition);
}

.sgp-auth-tab-btn:hover {
  color: var(--sgp-text);
  background: var(--sgp-border);
}

.sgp-auth-tab-btn.is-active {
  color: var(--sgp-primary);
  background: var(--sgp-surface);
}

.sgp-auth-tab-btn.is-active::after {
  transform: scaleX(1);
}

/* --------------------------------------------------------------------------
   Auth Panels (tab content)
   -------------------------------------------------------------------------- */

.sgp-auth-panels {
  position: relative;
}

.sgp-auth-panel {
  padding: 32px;
  animation: sgp-auth-fade-in 0.25s ease both;
}

.sgp-auth-panel .sgp-form-group {
  margin-bottom: 1rem;
}

.sgp-auth-panel[hidden] {
  display: none;
}

/* --------------------------------------------------------------------------
   OTP Screen
   -------------------------------------------------------------------------- */

.sgp-otp-screen {
  padding: 32px;
  animation: sgp-auth-slide-up 0.3s cubic-bezier(0.34, 1.4, 0.64, 1) both;
}

.sgp-otp-screen[hidden] {
  display: none;
}

.sgp-otp-header {
  text-align: center;
  margin-bottom: 28px;
}

.sgp-otp-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--sgp-primary-light);
  color: var(--sgp-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 16px;
  animation: sgp-auth-pop 0.4s cubic-bezier(0.34, 1.6, 0.64, 1) 0.1s both;
}

.sgp-otp-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--sgp-text);
  margin: 0 0 8px;
}

.sgp-otp-desc {
  font-size: 14px;
  color: var(--sgp-text-secondary);
  margin: 0;
  line-height: 1.6;
}

.sgp-otp-mobile-display {
  font-weight: 700;
  color: var(--sgp-primary);
  direction: ltr;
  display: inline-block;
}

/* --------------------------------------------------------------------------
   OTP Timer
   -------------------------------------------------------------------------- */

.sgp-otp-timer-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 20px 0 24px;
}

/* Circular timer SVG */
.sgp-timer-circle {
  position: relative;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
}

.sgp-timer-svg {
  width: 52px;
  height: 52px;
  transform: rotate(-90deg);
}

.sgp-timer-track {
  fill: none;
  stroke: var(--sgp-border);
  stroke-width: 3;
}

.sgp-timer-progress {
  fill: none;
  stroke: var(--sgp-primary);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 125.66; /* 2π × 20 (radius) */
  stroke-dashoffset: 0;
  transition:
    stroke-dashoffset 1s linear,
    stroke var(--sgp-transition);
}

.sgp-timer-progress.is-warning {
  stroke: var(--sgp-warning);
}

.sgp-timer-progress.is-expired {
  stroke: var(--sgp-danger);
}

.sgp-timer-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--sgp-primary);
  transition: color var(--sgp-transition);
}

.sgp-timer-text.is-warning {
  color: var(--sgp-warning);
}

.sgp-timer-text.is-expired {
  color: var(--sgp-danger);
}

.sgp-timer-info {
  flex: 1;
}

.sgp-timer-label {
  display: block;
  font-size: 13px;
  color: var(--sgp-text-secondary);
  margin-bottom: 4px;
}

.sgp-timer-resend {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--sgp-primary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: "Vazirmatn", sans-serif;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--sgp-transition);
}

.sgp-timer-resend:disabled {
  color: var(--sgp-text-muted);
  text-decoration: none;
  cursor: default;
}

.sgp-timer-resend:not(:disabled):hover {
  opacity: 0.75;
}

/* --------------------------------------------------------------------------
   OTP Code Input — segmented style
   -------------------------------------------------------------------------- */

.sgp-otp-inputs {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 8px;
  direction: ltr;
}

.sgp-otp-digit {
  width: 52px;
  height: 60px;
  border: 2px solid var(--sgp-border);
  border-radius: var(--sgp-radius-sm);
  font-family: "Vazirmatn", sans-serif;
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  color: var(--sgp-text);
  background: var(--sgp-surface);
  outline: none;
  transition:
    border-color var(--sgp-transition),
    box-shadow var(--sgp-transition),
    transform 0.15s ease;
  -moz-appearance: textfield;
  appearance: textfield;
}

.sgp-otp-digit::-webkit-outer-spin-button,
.sgp-otp-digit::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.sgp-otp-digit:focus {
  border-color: var(--sgp-primary);
  box-shadow: 0 0 0 3px var(--sgp-primary-light);
  transform: translateY(-2px);
}

.sgp-otp-digit.is-filled {
  border-color: var(--sgp-primary);
  background: var(--sgp-primary-light);
}

.sgp-otp-digit.is-invalid {
  border-color: var(--sgp-danger);
  box-shadow: 0 0 0 3px var(--sgp-input-invalid-shadow);
  animation: sgp-auth-shake 0.35s ease;
}

/* --------------------------------------------------------------------------
   Back button
   -------------------------------------------------------------------------- */

.sgp-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--sgp-text-secondary);
  font-family: "Vazirmatn", sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 0;
  margin-top: 16px;
  transition: color var(--sgp-transition);
  width: 100%;
  justify-content: center;
}

.sgp-back-btn:hover {
  color: var(--sgp-primary);
}

.sgp-back-btn-icon {
  font-style: normal;
  font-size: 16px;
  transition: transform var(--sgp-transition);
}

.sgp-back-btn:hover .sgp-back-btn-icon {
  transform: translateX(3px); /* RTL — moves right */
}

/* --------------------------------------------------------------------------
   Form Elements — specific to auth (supplement panel-core)
   -------------------------------------------------------------------------- */

.sgp-auth-form-header {
  margin-bottom: 24px;
}

.sgp-auth-form-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--sgp-text);
  margin: 0 0 6px;
}

.sgp-auth-form-subtitle {
  font-size: 14px;
  color: var(--sgp-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* Mobile input with flag/prefix */
.sgp-mobile-field {
  position: relative;
}

.sgp-mobile-prefix {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  font-weight: 600;
  color: var(--sgp-text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 6px;
  border-left: 1px solid var(--sgp-border);
  padding-left: 10px;
}

.sgp-mobile-prefix-flag {
  font-size: 16px;
  line-height: 1;
}

.sgp-mobile-input-wrapper .sgp-input {
  padding-right: 72px;
}

/* Auth submit button — full width, taller */
.sgp-auth-btn {
  width: 100%;
  height: 48px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--sgp-radius-sm);
  border: none;
  cursor: pointer;
  font-family: "Vazirmatn", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--sgp-transition);
  position: relative;
  overflow: hidden;
}

.sgp-auth-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: transparent;
  transition: background var(--sgp-transition);
}

.sgp-auth-btn:hover:not(:disabled)::before {
  background: rgba(255, 255, 255, 0.08);
}

.sgp-auth-btn:active:not(:disabled) {
  transform: scale(0.985);
}

.sgp-auth-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.sgp-auth-btn--primary {
  background: var(--sgp-primary);
  color: var(--sgp-on-primary);
  box-shadow: var(--sgp-btn-primary-shadow);
}

.sgp-auth-btn--primary:hover:not(:disabled) {
  box-shadow: var(--sgp-btn-primary-shadow-hover);
  transform: translateY(-1px);
}

.sgp-auth-btn--success {
  background: var(--sgp-success);
  color: var(--sgp-on-success);
  box-shadow: var(--sgp-btn-success-shadow);
}

.sgp-auth-btn--success:hover:not(:disabled) {
  box-shadow: var(--sgp-btn-success-shadow-hover);
  transform: translateY(-1px);
}

/* Button loading state */
.sgp-auth-btn .sgp-btn-spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--sgp-on-primary);
  border-radius: 50%;
  animation: sgp-spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Alert / Message
   -------------------------------------------------------------------------- */

.sgp-auth-message {
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.3s ease,
    margin 0.3s ease,
    opacity 0.3s ease;
  opacity: 0;
  border-radius: var(--sgp-radius-sm);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sgp-auth-message.is-visible {
  max-height: 80px;
  opacity: 1;
  margin-bottom: 16px;
  padding: 12px 14px;
}

.sgp-auth-message--error {
  background: var(--sgp-danger-light);
  color: var(--sgp-alert-error-text);
  border: 1px solid var(--sgp-alert-error-border);
}

.sgp-auth-message--success {
  background: var(--sgp-success-light);
  color: var(--sgp-alert-success-text);
  border: 1px solid var(--sgp-alert-success-border);
}

.sgp-auth-message--info {
  background: var(--sgp-info-light);
  color: var(--sgp-alert-info-text);
  border: 1px solid var(--sgp-alert-info-border);
}

.sgp-auth-message-icon {
  font-style: normal;
  font-size: 15px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Form Hint / Divider
   -------------------------------------------------------------------------- */

.sgp-auth-hint {
  font-size: 13px;
  color: var(--sgp-text-muted);
  line-height: 1.6;
  padding: 12px 16px;
  background: var(--sgp-surface-2);
  border-radius: var(--sgp-radius-sm);
  border: 1px solid var(--sgp-border);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.sgp-auth-hint-icon {
  font-style: normal;
  font-size: 15px;
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--sgp-primary);
}

/* Copyright */
.sgp-copyright {
  text-align: center;
  margin-top: 20px;
  color: var(--sgp-text-muted);
  font-size: 12px;
}

/* --------------------------------------------------------------------------
   Password strength / terms (future use placeholders)
   -------------------------------------------------------------------------- */

.sgp-auth-terms {
  font-size: 12px;
  color: var(--sgp-text-muted);
  text-align: center;
  margin-top: 14px;
  line-height: 1.5;
}

.sgp-auth-terms a {
  color: var(--sgp-primary);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */

@keyframes sgp-auth-fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes sgp-auth-slide-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes sgp-auth-pop {
  from {
    opacity: 0;
    transform: scale(0.6);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes sgp-auth-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  20% {
    transform: translateX(-5px);
  }
  40% {
    transform: translateX(5px);
  }
  60% {
    transform: translateX(-3px);
  }
  80% {
    transform: translateX(3px);
  }
}

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

@media (max-width: 480px) {
  .sgp-auth-panel {
    padding: 24px 20px;
  }

  .sgp-otp-screen {
    padding: 24px 20px;
  }

  .sgp-otp-digit {
    width: 44px;
    height: 52px;
    font-size: 20px;
  }

  .sgp-otp-inputs {
    gap: 7px;
  }
}