/* ==========================================================
   auth.css — ZmajRun
   Styles for the index.html login / register page.
   ========================================================== */

/* ── Page layout ── */
.auth-page {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-dark);
  overflow-y: auto;
  padding: var(--gap-lg) var(--gap-md);
  padding-bottom: calc(var(--ad-banner-height) + var(--gap-lg));
}

/* Animated star background */
.auth-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(58,134,255,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(230,57,70,0.12) 0%, transparent 60%),
    linear-gradient(180deg, #0a0a1a 0%, #1a1a2e 50%, #16213e 100%);
  z-index: 0;
}

.auth-stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: #fff;
  border-radius: 50%;
  opacity: 0;
  animation: twinkle var(--dur, 3s) var(--delay, 0s) infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0; }
  50%       { opacity: var(--brightness, 0.8); }
}

/* ── Card ── */
.auth-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--gap-xl) var(--gap-xl);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(230,57,70,0.1);
  animation: slideInUp 0.5s ease both;
}

@media (max-width: 480px) {
  .auth-card {
    padding: var(--gap-lg) var(--gap-md);
    border-radius: var(--radius-lg);
  }
}

/* ── Logo/branding ── */
.auth-logo {
  text-align: center;
  margin-bottom: var(--gap-xl);
}

.auth-logo-title {
  font-family: var(--font-pixel);
  font-size: 22px;
  color: var(--color-primary);
  text-shadow: 3px 3px 0 var(--color-primary-dk), var(--shadow-glow);
  letter-spacing: 2px;
  line-height: 1.4;
}

.auth-logo-sub {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: var(--gap-sm);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.auth-logo-flag {
  font-size: 28px;
  margin-bottom: var(--gap-sm);
  animation: bounce 2s ease-in-out infinite;
  display: inline-block;
}

/* ── Tabs ── */
.auth-tabs {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: var(--gap-lg);
}

.auth-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-tab.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(230,57,70,0.4);
}

.auth-tab:not(.active):hover {
  background: rgba(255,255,255,0.08);
  color: var(--color-text);
}

/* ── Form panels ── */
.auth-panel {
  display: none;
  flex-direction: column;
  gap: var(--gap-md);
  animation: fadeIn 0.3s ease;
}

.auth-panel.active {
  display: flex;
}

/* ── Input groups ── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
}

.input-label {
  font-size: 11px;
  font-weight: 800;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.input-field {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.07);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.input-field::placeholder {
  color: rgba(255,255,255,0.2);
}

.input-field:focus {
  border-color: var(--color-primary);
  background: rgba(255,255,255,0.1);
  box-shadow: 0 0 0 3px rgba(230,57,70,0.15);
}

.input-field.error {
  border-color: var(--color-primary);
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-6px); }
  75%       { transform: translateX(6px); }
}

/* ── Error/success messages ── */
.auth-message {
  font-size: 12px;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  display: none;
}

.auth-message.error {
  background: rgba(230,57,70,0.15);
  border: 1px solid rgba(230,57,70,0.4);
  color: #ff8080;
  display: block;
}

.auth-message.success {
  background: rgba(56,176,0,0.15);
  border: 1px solid rgba(56,176,0,0.4);
  color: #80ff80;
  display: block;
}

/* ── Buttons ── */
.btn-primary {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dk) 100%);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 0 var(--color-primary-dk), var(--shadow-md);
  transition: all var(--transition-fast);
  position: relative;
  top: 0;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #f0505d 0%, var(--color-primary) 100%);
  box-shadow: 0 6px 0 var(--color-primary-dk), var(--shadow-lg);
  top: -2px;
}

.btn-primary:active {
  top: 4px;
  box-shadow: 0 0px 0 var(--color-primary-dk), var(--shadow-sm);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  top: 0;
}

.btn-google {
  width: 100%;
  padding: 13px;
  background: #fff;
  border: 2px solid rgba(0,0,0,0.12);
  border-radius: var(--radius-md);
  color: #333;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
  transition: all var(--transition-fast);
  box-shadow: 0 3px 0 rgba(0,0,0,0.15);
  position: relative;
  top: 0;
}

.btn-google:hover {
  background: #f8f8f8;
  box-shadow: 0 5px 0 rgba(0,0,0,0.15);
  top: -2px;
}

.btn-google:active {
  top: 3px;
  box-shadow: 0 0 0 rgba(0,0,0,0.15);
}

.google-icon {
  font-size: 18px;
}

.divider {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

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

/* ── Loading spinner ── */
.btn-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}