/**
 * 禪閱 ZenRead — Paywall & Auth Page CSS
 */

/* ─── Body ─── */
.paywall-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* ─── Background ─── */
.paywall-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl);
  filter: blur(6px);
  transform: scale(1.05);
}

.paywall-bg-text {
  font-size: 22px;
  line-height: 2.2;
  color: var(--color-text);
  opacity: 0.15;
  max-width: 680px;
  text-align: center;
}

.paywall-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(249,248,246,0.90) 0%,
    rgba(249,248,246,0.85) 100%
  );
}

.dark .paywall-overlay {
  background: linear-gradient(
    135deg,
    rgba(17,33,32,0.92) 0%,
    rgba(17,33,32,0.88) 100%
  );
}

/* ─── Container ─── */
.paywall-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 440px;
  padding: var(--space-xl);
}

/* ─── Form Card ─── */
.paywall-form-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2xl);
}

/* ─── Logo ─── */
.pw-logo {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-lg);
  text-decoration: none;
}

.pw-logo-text {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.pw-logo:hover .pw-logo-text { color: var(--color-primary); }

/* ─── Paywall message banner ─── */
.pw-message {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background-color: var(--color-primary-ultra);
  border: 1px solid rgba(123,140,124,0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-lg);
}

.pw-message-text {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
}

/* ─── Tab Switcher ─── */
.pw-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-lg);
  gap: 0;
}

.pw-tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  margin-bottom: -1px;
}

.pw-tab:hover { color: var(--color-text); }

.pw-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ─── Form Fields ─── */
.pw-panel { display: flex; flex-direction: column; gap: var(--space-md); }
.pw-panel[hidden] { display: none; }

.pw-field { display: flex; flex-direction: column; gap: var(--space-xs); }

.pw-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pw-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
}

.pw-forgot {
  font-size: 12px;
  color: var(--color-primary);
  transition: opacity var(--transition-fast);
}

.pw-forgot:hover { opacity: 0.7; }

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

.pw-input-icon {
  position: absolute;
  left: 12px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.pw-input {
  width: 100%;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 11px 44px 11px 38px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-slow);
}

.pw-input::placeholder { color: var(--color-text-muted); }

.pw-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(123,140,124,0.15);
  background-color: var(--color-surface);
}

.pw-input.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

.pw-toggle-pass {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  padding: 4px;
  transition: color var(--transition-fast);
}

.pw-toggle-pass:hover { color: var(--color-text); }

.pw-error {
  font-size: 12px;
  color: #ef4444;
  min-height: 16px;
  display: block;
}

/* ─── Checkbox ─── */
.pw-checkbox-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.pw-checkbox {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1px solid var(--color-border);
  accent-color: var(--color-primary);
  cursor: pointer;
}

.pw-checkbox-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ─── Submit ─── */
.pw-submit {
  width: 100%;
  justify-content: center;
  height: 44px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-lg);
  margin-top: var(--space-xs);
}

.pw-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* ─── Password Strength Meter ─── */
.pw-strength {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.pw-strength-bars {
  display: flex;
  gap: 4px;
  flex: 1;
}

.pw-strength-bar {
  flex: 1;
  height: 3px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.pw-strength-bar.weak   { background-color: #ef4444; }
.pw-strength-bar.medium { background-color: #f59e0b; }
.pw-strength-bar.strong { background-color: var(--color-primary); }

.pw-strength-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 32px;
  text-align: right;
}

/* ─── Divider ─── */
.pw-divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.pw-divider::before,
.pw-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border-light);
}

.pw-divider-text {
  font-size: 12px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ─── Social Button ─── */
.pw-social-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  height: 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pw-social-btn:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-ultra);
}

/* ─── Terms ─── */
.pw-terms {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.6;
}

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

/* ─── Back Link ─── */
.pw-back {
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
}

.pw-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 13px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

/* ─── Success overlay ─── */
.pw-success-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: rgba(249,248,246,0.96);
  backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
}

.pw-success-overlay.show {
  display: flex;
}

.pw-success-card {
  text-align: center;
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
}