/**
 * public/css/auth.css
 * Styles for Derrick Cruises Login and Registration experience.
 */

:root {
  --nav-bg: #2d1b4e;
  --gold: #d4a843;
  --gold-hover: #e6bc5a;
  --orange: #d4883e;
  --text-dark: #1a1a2e;
  --text-body: #444455;
  --text-light: #6b6b80;
  --border-color: #e8e8ee;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background: radial-gradient(circle at top right, #3c2468, var(--text-dark));
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-wrapper {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.back-home-btn {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 24px;
  transition: color 0.25s var(--ease);
}

.back-home-btn:hover {
  color: #ffffff;
}

.auth-card {
  background: #ffffff;
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-logo {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--nav-bg);
  font-weight: 700;
  letter-spacing: 1px;
}

.auth-logo .logo-c {
  color: var(--orange);
}

.auth-logo .logo-sub {
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 3px;
  color: var(--text-light);
  margin-top: 2px;
  text-transform: uppercase;
}

/* Tabs */
.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 30px;
}

.auth-tab-btn {
  flex: 1;
  text-align: center;
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  transition: all 0.25s var(--ease);
  position: relative;
  background: none;
  border: none;
  font-family: var(--font-body);
}

.auth-tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--nav-bg);
  transform: scaleX(0);
  transition: transform 0.25s var(--ease);
}

.auth-tab-btn.active {
  color: var(--nav-bg);
}

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

/* Forms */
.auth-form {
  display: none;
}

.auth-form.show {
  display: block;
  animation: fadeIn 0.4s var(--ease);
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1.5px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-dark);
  background: #ffffff;
  transition: all 0.25s var(--ease);
  font-family: var(--font-body);
}

input:focus {
  outline: none;
  border-color: var(--nav-bg);
  box-shadow: 0 0 0 4px rgba(45, 27, 78, 0.08);
}

.forgot-pwd {
  font-size: 0.8rem;
  color: var(--orange);
  font-weight: 500;
}

.forgot-pwd:hover {
  text-decoration: underline;
}

/* Auth button */
.btn-auth {
  width: 100%;
  background: var(--nav-bg);
  color: #ffffff;
  padding: 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  border: none;
  font-family: var(--font-body);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.btn-auth:hover {
  background: #3c2468;
  transform: translateY(-1px);
}

.btn-auth:disabled {
  background: #cccccc;
  cursor: not-allowed;
  transform: none;
}

/* Errors */
.form-error {
  display: none;
  font-size: 0.78rem;
  color: #e74c3c;
  margin-top: 6px;
  font-weight: 500;
}

.form-group.error .form-error {
  display: block;
}

.form-group.error input {
  border-color: #e74c3c;
  background: #fef5f5;
}

/* Spinner utility */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spinner {
  animation: spin 1s linear infinite;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 30px 20px;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}