/* ============================================================
   SpaceEmpires – Login Screen Styles
   ============================================================ */

/* ── Layout ── */
.login-page {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Star Canvas Background ── */
#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: var(--z-canvas);
  pointer-events: none;
  display: block; /* verhindert inline-gap unter dem canvas */
}

/* ── Nebula Overlay ──
   Bewusst schwach gehalten, damit die Sterne durchscheinen.
   Die Farben geben nur einen subtilen Raumton, keine Dominanz.
── */
.nebula-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 15% 40%, rgba(10, 30, 100, 0.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 85% 65%, rgba(60, 10, 90, 0.14) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 50% 10%, rgba(0, 80, 120, 0.10) 0%, transparent 60%);
}

/* ── Login Panel ── */
.login-panel {
  position: relative;
  z-index: var(--z-panel);
  width: 100%;
  max-width: 420px;
  padding: var(--space-xl);
  background: rgba(6, 9, 20, 0.85);
  border: 1px solid var(--color-border);
  border-top-color: var(--color-border-glow);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  box-shadow:
    0 0 60px rgba(0, 0, 0, 0.8),
    0 0 30px rgba(42, 74, 174, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);

  /* Entrance animation */
  animation: panelReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes panelReveal {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ── Corner Decorations ── */
.login-panel::before,
.login-panel::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--color-gold);
  border-style: solid;
}
.login-panel::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
  border-radius: var(--radius-md) 0 0 0;
}
.login-panel::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
  border-radius: 0 0 var(--radius-md) 0;
}

/* ── Logo / Header ── */
.login-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  animation: fadeInDown 0.6s 0.2s ease both;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-logo {
  display: inline-block;
  margin-bottom: var(--space-md);
}

.login-logo svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 0 12px rgba(200, 168, 75, 0.6));
}

.login-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  text-shadow: 0 0 20px rgba(200, 168, 75, 0.5);
}

.login-subtitle {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ── Divider ── */
.login-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-glow), transparent);
  margin-bottom: var(--space-xl);
  opacity: 0.6;
}

/* ── Form ── */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  animation: fadeInUp 0.6s 0.35s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Field ── */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.field-label {
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.field:focus-within .field-label {
  color: var(--color-cyan);
}

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

.field-icon {
  position: absolute;
  left: var(--space-md);
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.field:focus-within .field-icon {
  color: var(--color-cyan);
}

.field-input {
  width: 100%;
  padding: 12px var(--space-md) 12px 44px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

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

.field-input:focus {
  border-color: var(--color-cyan-dim);
  background: rgba(0, 200, 255, 0.04);
  box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.08), inset 0 0 20px rgba(0, 200, 255, 0.03);
}

.field-input.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(255, 64, 64, 0.1);
}

/* ── Password Toggle ── */
.btn-password-toggle {
  position: absolute;
  right: var(--space-md);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color var(--transition-fast);
}
.btn-password-toggle:hover { color: var(--color-text-secondary); }

/* ── Error Message ── */
.field-error {
  font-size: 11px;
  color: var(--color-error);
  display: none;
  align-items: center;
  gap: 4px;
  padding-left: 2px;
}
.field-error.visible { display: flex; }

/* ── Remember + Forgot Row ── */
.login-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xs);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 12px;
  color: var(--color-text-secondary);
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-border-glow);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  position: relative;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked {
  background: var(--color-cyan-dim);
  border-color: var(--color-cyan);
}

.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: 2px solid var(--color-cyan);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.link-forgot {
  font-size: 12px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}
.link-forgot:hover { color: var(--color-gold); }

/* ── Submit Button ── */
.btn-submit {
  position: relative;
  width: 100%;
  padding: 14px var(--space-lg);
  margin-top: var(--space-sm);
  background: linear-gradient(135deg, #8b6914, #c8a84b, #8b6914);
  background-size: 200% 100%;
  background-position: 100% 0;
  border: 1px solid var(--color-gold-dim);
  border-radius: var(--radius-md);
  color: #0a0800;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  overflow: hidden;
  transition:
    background-position var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast),
    border-color var(--transition-normal);
}

.btn-submit:hover:not(:disabled) {
  background-position: 0 0;
  box-shadow: var(--glow-gold);
  border-color: var(--color-gold);
  transform: translateY(-1px);
}

.btn-submit:active:not(:disabled) {
  transform: translateY(0);
}

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-submit-text { transition: opacity var(--transition-fast); }

.btn-submit-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-submit.loading .btn-submit-text { opacity: 0; }
.btn-submit.loading .btn-submit-loader { opacity: 1; }

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: #0a0800;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Global Error Alert ── */
.login-alert {
  display: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 12px;
  border: 1px solid;
  animation: shake 0.4s ease;
}

.login-alert.error {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(255, 64, 64, 0.08);
  border-color: rgba(255, 64, 64, 0.3);
  color: var(--color-error);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  60%       { transform: translateX(6px); }
}

/* ── Footer ── */
.login-footer {
  text-align: center;
  margin-top: var(--space-xl);
  font-size: 11px;
  color: var(--color-text-muted);
  animation: fadeInUp 0.6s 0.5s ease both;
}

/* ── Scan line effect ── */
.scanline {
  position: fixed;
  inset: 0;
  z-index: var(--z-panel);
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}