/* ═══════════════════════════════════════════════════════════════
   Pikacuan Terminal — Authentication Styles
   ═══════════════════════════════════════════════════════════════ */

/* ── Auth Overlay ── */
#auth-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#auth-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Background animated mesh */
.auth-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  background: radial-gradient(circle at top right, rgba(15, 17, 26, 1) 0%, rgba(3, 4, 7, 1) 100%);
}

.auth-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  animation: auth-orb-float 15s ease-in-out infinite alternate;
  opacity: 0.7;
}

.auth-bg-orb:nth-child(1) {
  width: 60vw; height: 60vh;
  top: -10%; left: -10%;
  background: rgba(99, 102, 241, 0.15); /* Indigo */
}

.auth-bg-orb:nth-child(2) {
  width: 50vw; height: 50vh;
  bottom: -20%; right: -10%;
  background: rgba(217, 70, 239, 0.15); /* Magenta */
  animation-delay: -5s;
}

.auth-bg-orb:nth-child(3) {
  width: 40vw; height: 40vh;
  top: 30%; left: 40%;
  background: rgba(56, 189, 248, 0.1); /* Light Blue */
  animation-delay: -10s;
}

@keyframes auth-orb-float {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(40px, -30px) scale(1.1); }
  100% { transform: translate(-30px, 20px) scale(0.9); }
}

/* ── Auth Card (Sleek Obsidian Glass) ── */
.auth-card {
  position: relative;
  z-index: 1;
  width: calc(100% - 40px);
  max-width: 420px;
  margin: 20px;
  background: rgba(12, 14, 20, 0.65);
  backdrop-filter: blur(40px) saturate(1.8);
  -webkit-backdrop-filter: blur(40px) saturate(1.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  box-shadow: 
    0 32px 80px rgba(0, 0, 0, 0.8),
    inset 0 1px 1px rgba(255, 255, 255, 0.05);
  animation: auth-card-enter 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes auth-card-enter {
  from { opacity: 0; transform: translateY(30px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-card-inner {
  padding: 48px 40px 40px;
}

/* ── Auth Header & Logo ── */
.auth-header {
  text-align: center;
  margin-bottom: 40px;
}

.auth-logo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  transform: scale(1.8);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  margin-bottom: 20px;
  border: 2px solid var(--accent, #f5a623);
  overflow: hidden;
}

.auth-header h2 {
  font-family: var(--font-sans);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.auth-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Auth Tabs (Login/Register toggle) ── */
.auth-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  margin-bottom: 28px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.auth-tab-btn {
  flex: 1;
  padding: 10px 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-med);
}

.auth-tab-btn:hover {
  color: var(--text-secondary);
}

.auth-tab-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

/* ── Form Views ── */
.auth-view {
  display: none;
  animation: auth-view-enter 0.35s ease both;
}

.auth-view.active {
  display: block;
}

@keyframes auth-view-enter {
  from { opacity: 0; transform: translateX(8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Form Groups ── */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.form-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input-wrapper > svg {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.form-input {
  width: 100%;
  padding: 12px 14px 12px 44px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-med);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

.form-input::placeholder {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-input:focus {
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.35);
  box-shadow: 0 0 0 3px var(--accent-glow), inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

.form-input:focus + svg,
.form-input-wrapper:focus-within svg {
  color: var(--accent-light);
}

.form-input.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

/* Premium Input Style */
.terminal-input {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  letter-spacing: 0;
  background: rgba(0, 0, 0, 0.3);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-input:focus {
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15), inset 0 2px 5px rgba(0, 0, 0, 0.2);
}

.terminal-input:focus + svg,
.form-input-wrapper:focus-within > svg {
  color: var(--accent-light);
}

/* Premium Gradient Button */
.terminal-btn {
  background: linear-gradient(135deg, var(--accent) 0%, #818cf8 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px;
}

.terminal-btn:hover {
  background: linear-gradient(135deg, #818cf8 0%, #a5b4fc 100%);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
  transform: translateY(-1px);
}

.terminal-text-block {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  margin-bottom: 24px;
}

.terminal-text-block p {
  color: var(--text-primary);
  margin-bottom: 6px;
  font-weight: 500;
}

.terminal-text-block .text-muted {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

.mb-16 {
  margin-bottom: 16px;
}

.forgot-pwd-link {
  background: none;
  border: none;
  color: var(--accent-light);
  font-size: 0.75rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.forgot-pwd-link:hover {
  color: #fff;
  text-decoration: underline;
}

.back-to-login-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-sans);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition-fast);
}

.back-to-login-btn:hover {
  color: var(--text-primary);
}

/* Toggle password visibility */
.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  transition: color var(--transition-fast);
}

.toggle-password:hover {
  color: var(--text-primary);
}

/* ── Password Strength ── */
.password-strength {
  margin-top: 10px;
}

.strength-bar-track {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 6px;
}

.strength-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  transition: width 0.4s ease, background 0.4s ease;
}

.strength-bar-fill[data-strength="0"] { width: 0%; }
.strength-bar-fill[data-strength="1"] { width: 25%; background: var(--danger); }
.strength-bar-fill[data-strength="2"] { width: 50%; background: var(--warning); }
.strength-bar-fill[data-strength="3"] { width: 75%; background: #3b82f6; }
.strength-bar-fill[data-strength="4"] { width: 100%; background: var(--success); }

.strength-text {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.strength-requirements {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.strength-req {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-fast);
}

.strength-req.met {
  color: var(--success);
}

.strength-req .req-icon {
  font-size: 0.65rem;
}

/* ── Auth Button ── */
.auth-submit {
  width: 100%;
  padding: 14px;
  margin-top: 8px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-med);
  box-shadow: 0 4px 16px var(--accent-glow);
  position: relative;
  overflow: hidden;
}

.auth-submit:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

.auth-submit:active {
  transform: translateY(0);
}

.auth-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.auth-submit .spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto;
}

.auth-submit.loading .btn-text { display: none; }
.auth-submit.loading .spinner { display: inline-block; }

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

/* ── Auth Message ── */
.auth-message {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 16px;
  display: none;
  align-items: center;
  gap: 8px;
  animation: auth-msg-enter 0.3s ease both;
}

.auth-message.show {
  display: flex;
}

.auth-message.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

.auth-message.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
}

@keyframes auth-msg-enter {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Checkbox ── */
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 16px 0;
}

.form-checkbox input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 1px;
  position: relative;
  transition: all var(--transition-fast);
}

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

.form-checkbox input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}

.form-checkbox label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
  cursor: pointer;
}

.form-checkbox label a {
  color: var(--accent-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ── Auth Footer ── */
.auth-footer {
  text-align: center;
  padding: 20px 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: rgba(0, 0, 0, 0.15);
}

.auth-footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--accent-light);
  font-weight: 600;
  cursor: pointer;
}

/* ── User Menu in Header ── */
.user-menu {
  position: relative;
}

.user-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-med);
}

.user-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: rgba(15, 17, 26, 0.95);
  backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  padding: 8px;
  display: none;
  animation: dropdown-enter 0.2s ease both;
  z-index: 1001;
}

.user-dropdown.open {
  display: block;
}

@keyframes dropdown-enter {
  from { opacity: 0; transform: translateY(-4px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.dropdown-header {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 6px;
}

.dropdown-header .user-email {
  font-size: 0.78rem;
  color: var(--text-muted);
  word-break: break-all;
}

.dropdown-header .user-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.dropdown-item.danger {
  color: var(--danger);
}

.dropdown-item.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* ── Light Mode overrides ── */
body.light-mode .auth-card {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.15);
}

body.light-mode .auth-tabs {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.06);
}

body.light-mode .auth-tab-btn { color: var(--text-muted); }
body.light-mode .auth-tab-btn.active { background: var(--accent); color: #fff; }

body.light-mode .form-input {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.1);
  color: var(--text-primary);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

body.light-mode .form-input:focus {
  background: #fff;
  border-color: var(--accent);
}

body.light-mode .form-checkbox input[type="checkbox"] {
  border-color: rgba(0, 0, 0, 0.15);
  background: rgba(0, 0, 0, 0.03);
}

body.light-mode .auth-message.error {
  background: rgba(239, 68, 68, 0.06);
  color: #dc2626;
}

body.light-mode .auth-message.success {
  background: rgba(16, 185, 129, 0.06);
  color: #059669;
}

body.light-mode .auth-footer {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.06);
}

body.light-mode .auth-footer p {
  color: #475569;
}

body.light-mode .user-dropdown {
  background: rgba(255, 255, 255, 0.97);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

body.light-mode .dropdown-item:hover {
  background: rgba(0, 0, 0, 0.04);
}

/* ── Responsive ── */
@media (max-width: 500px) {
  .auth-card-inner { padding: 28px 24px 24px; }
  .auth-header h2 { font-size: 1.3rem; }
  .auth-footer { padding: 16px 24px; }
  .strength-requirements { grid-template-columns: 1fr; }
}