/* ─── Reset & Base ──────────────────────────────────── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --navy:        #1a2e4a;
      --blue:        #2563eb;
      --blue-light:  #3b82f6;
      --blue-pale:   #dbeafe;
      --white:       #ffffff;
      --off-white:   #f8fafc;
      --gray-100:    #f1f5f9;
      --gray-300:    #cbd5e1;
      --gray-500:    #64748b;
      --gray-700:    #334155;
      --error:       #ef4444;
      --success:     #22c55e;
      --glass-bg:    rgba(255, 255, 255, 0.82);
      --glass-border:rgba(255, 255, 255, 0.6);
      --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
      --shadow-md:   0 4px 24px rgba(37,99,235,0.10);
      --shadow-lg:   0 16px 48px rgba(37,99,235,0.18);
      --radius:      14px;
      --transition:  0.35s cubic-bezier(0.4,0,0.2,1);
    }

    html, body {
      height: 100%;
      font-family: 'Inter', sans-serif;
      background: var(--off-white);
      color: var(--gray-700);
      overflow: hidden;
    }

    /* ─── Top Nav Bar ────────────────────────────────────── */
    .navbar {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      height: 56px;
      background: var(--navy);
      display: flex;
      align-items: center;
      padding: 0 32px;
      gap: 12px;
    }

    .navbar-logo {
      font-family: 'Cormorant Garamond', serif;
      font-size: 20px;
      font-weight: 600;
      color: var(--white);
      letter-spacing: 2px;
      text-transform: uppercase;
    }

    .navbar-divider {
      width: 1px;
      height: 18px;
      background: rgba(255,255,255,0.25);
    }

    .navbar-sub {
      font-size: 11px;
      font-weight: 300;
      color: rgba(255,255,255,0.55);
      letter-spacing: 1.5px;
      text-transform: uppercase;
    }

    /* ─── Page Wrapper ───────────────────────────────────── */
    .page {
      display: flex;
      height: 100vh;
      padding-top: 56px;
    }

    /* ─── Left Panel ─────────────────────────────────────── */
    .panel-left {
      flex: 1;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
    }

    .panel-left img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
    }

    .panel-left-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(
        160deg,
        rgba(26,46,74,0.45) 0%,
        rgba(26,46,74,0.08) 50%,
        rgba(26,46,74,0.70) 100%
      );
    }

    .panel-left-content {
      position: relative;
      z-index: 2;
      padding: 40px 44px;
    }

    .panel-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.15);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.3);
      border-radius: 30px;
      padding: 6px 14px;
      font-size: 11px;
      font-weight: 500;
      color: rgba(255,255,255,0.9);
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 18px;
    }

    .panel-badge span {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #7dd3fc;
      display: block;
    }

    .panel-heading {
      font-family: 'Cormorant Garamond', serif;
      font-size: clamp(32px, 4vw, 52px);
      font-weight: 500;
      color: var(--white);
      line-height: 1.15;
      margin-bottom: 14px;
      text-shadow: 0 2px 12px rgba(0,0,0,0.3);
    }

    .panel-heading em {
      font-style: italic;
      font-weight: 400;
    }

    .panel-sub {
      font-size: 14px;
      font-weight: 300;
      color: rgba(255,255,255,0.72);
      line-height: 1.6;
      max-width: 340px;
      letter-spacing: 0.2px;
    }

    .panel-dots {
      display: flex;
      gap: 6px;
      margin-top: 28px;
    }

    .panel-dots span {
      width: 24px;
      height: 3px;
      border-radius: 2px;
      background: rgba(255,255,255,0.35);
      transition: background var(--transition);
    }

    .panel-dots span.active {
      background: rgba(255,255,255,0.9);
      width: 40px;
    }

    /* ─── Right Panel ─────────────────────────────────────── */
    .panel-right {
      width: 460px;
      min-width: 460px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--off-white);
      padding: 32px;
      overflow-y: auto;
      position: relative;
    }

    /* ─── Card ────────────────────────────────────────────── */
    .auth-card {
      width: 100%;
      max-width: 380px;
      background: var(--glass-bg);
      backdrop-filter: blur(20px);
      border: 1px solid var(--glass-border);
      border-radius: 24px;
      padding: 40px 36px;
      box-shadow: var(--shadow-lg);
      animation: fadeSlideIn 0.6s ease forwards;
    }

    @keyframes fadeSlideIn {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* ─── Brand inside card ───────────────────────────────── */
    .card-brand {
      font-family: 'Cormorant Garamond', serif;
      font-size: 22px;
      font-weight: 600;
      letter-spacing: 2.5px;
      text-transform: uppercase;
      color: var(--navy);
      text-align: center;
      margin-bottom: 6px;
    }

    .card-brand-line {
      width: 36px;
      height: 2px;
      background: var(--blue);
      border-radius: 2px;
      margin: 0 auto 28px;
    }

    /* ─── Tab Switcher ────────────────────────────────────── */
    .tab-switcher {
      display: flex;
      background: var(--gray-100);
      border-radius: 10px;
      padding: 4px;
      margin-bottom: 28px;
    }

    .tab-btn {
      flex: 1;
      padding: 9px 0;
      border: none;
      background: transparent;
      border-radius: 7px;
      font-family: 'Inter', sans-serif;
      font-size: 13px;
      font-weight: 500;
      color: var(--gray-500);
      cursor: pointer;
      transition: all var(--transition);
    }

    .tab-btn.active {
      background: var(--white);
      color: var(--navy);
      box-shadow: var(--shadow-sm);
    }

    /* ─── Form Titles ─────────────────────────────────────── */
    .form-title {
      font-family: 'Cormorant Garamond', serif;
      font-size: 28px;
      font-weight: 600;
      color: var(--navy);
      margin-bottom: 6px;
    }

    .form-subtitle {
      font-size: 13px;
      color: var(--gray-500);
      margin-bottom: 24px;
      line-height: 1.5;
    }

    /* ─── Form Panels (slide animation) ──────────────────── */
    .forms-wrapper {
      position: relative;
      overflow: hidden;
    }

    .form-panel {
      width: 100%;
      transition: transform 0.45s cubic-bezier(0.4,0,0.2,1),
                  opacity  0.45s cubic-bezier(0.4,0,0.2,1);
    }

    .form-panel.hidden-left {
      position: absolute;
      top: 0; left: 0;
      width: 100%;
      transform: translateX(-100%);
      opacity: 0;
      pointer-events: none;
    }

    .form-panel.hidden-right {
      position: absolute;
      top: 0; left: 0;
      width: 100%;
      transform: translateX(100%);
      opacity: 0;
      pointer-events: none;
    }

    /* ─── Input Groups ────────────────────────────────────── */
    .field-group {
      margin-bottom: 16px;
    }

    .field-label {
      display: block;
      font-size: 12px;
      font-weight: 500;
      color: var(--gray-700);
      margin-bottom: 6px;
      letter-spacing: 0.3px;
    }

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

    .input-icon {
      position: absolute;
      left: 14px;
      color: var(--gray-500);
      pointer-events: none;
      display: flex;
      align-items: center;
    }

    .input-icon svg {
      width: 16px;
      height: 16px;
    }

    .input-wrap input {
      width: 100%;
      padding: 11px 42px 11px 40px;
      border: 1.5px solid var(--gray-300);
      border-radius: 10px;
      font-family: 'Inter', sans-serif;
      font-size: 14px;
      color: var(--navy);
      background: var(--white);
      outline: none;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .input-wrap input::placeholder {
      color: var(--gray-300);
    }

    .input-wrap input:focus {
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
    }

    .input-wrap input.error {
      border-color: var(--error);
      box-shadow: 0 0 0 3px rgba(239,68,68,0.10);
    }

    .password-toggle {
      position: absolute;
      right: 13px;
      background: none;
      border: none;
      cursor: pointer;
      color: var(--gray-500);
      display: flex;
      align-items: center;
      padding: 2px;
      transition: color var(--transition);
    }

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

    .password-toggle svg {
      width: 16px;
      height: 16px;
    }

    .field-error {
      font-size: 11.5px;
      color: var(--error);
      margin-top: 4px;
      display: none;
    }

    .field-error.visible {
      display: block;
    }

    /* ─── Checkbox Row ────────────────────────────────────── */
    .row-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px; /* Espaciado con el botón de Iniciar Sesión */
    }

    .check-label {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      cursor: pointer;
    }

    .check-label input[type="checkbox"] {
      appearance: none;
      width: 16px;
      height: 16px;
      border: 1.5px solid var(--gray-300);
      border-radius: 4px;
      background: var(--white);
      cursor: pointer;
      transition: all var(--transition);
      position: relative;
      flex-shrink: 0;
    }

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

    .check-label input[type="checkbox"]:checked::after {
      content: '';
      position: absolute;
      top: 2px; left: 4.5px;
      width: 5px; height: 8px;
      border: 2px solid white;
      border-top: none;
      border-left: none;
      transform: rotate(45deg);
    }

    .link-btn {
      font-size: 0.875rem;
      color: #007bff; /* O el color acento de tu paleta */
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .link-btn:hover {
      color: var(--navy);
      text-decoration: underline;
    }

    /* ─── Primary Button ──────────────────────────────────── */
    .btn-primary {
      width: 100%;
      padding: 13px;
      background: var(--blue);
      color: var(--white);
      border: none;
      border-radius: 10px;
      font-family: 'Inter', sans-serif;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.3px;
      cursor: pointer;
      transition: all var(--transition);
      position: relative;
      overflow: hidden;
    }

    .btn-primary::after {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(255,255,255,0);
      transition: background 0.2s;
    }

    .btn-primary:hover {
      background: var(--navy);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(37,99,235,0.35);
    }

    .btn-primary:hover::after {
      background: rgba(255,255,255,0.05);
    }

    .btn-primary:active {
      transform: translateY(0);
    }

    /* ─── Divider ─────────────────────────────────────────── */
    .divider {
      display: flex;
      align-items: center;
      gap: 12px;
      margin: 20px 0;
    }

    .divider::before, .divider::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--gray-300);
    }

    .divider span {
      font-size: 12px;
      color: var(--gray-500);
      white-space: nowrap;
    }

    /* ─── Social Buttons ──────────────────────────────────── */
    .social-row {
      display: flex;
      gap: 10px;
    }

    .btn-social {
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px;
      border: 1.5px solid var(--gray-300);
      border-radius: 10px;
      background: var(--white);
      font-family: 'Inter', sans-serif;
      font-size: 12.5px;
      font-weight: 500;
      color: var(--gray-700);
      cursor: pointer;
      transition: all var(--transition);
    }

    .btn-social svg {
      width: 16px;
      height: 16px;
    }

    .btn-social:hover {
      border-color: var(--blue);
      color: var(--blue);
      background: var(--blue-pale);
    }

    /* ─── Success Toast ───────────────────────────────────── */
    .toast {
      position: fixed;
      bottom: 28px;
      left: 50%;
      transform: translateX(-50%) translateY(60px);
      background: var(--navy);
      color: var(--white);
      padding: 12px 24px;
      border-radius: 40px;
      font-size: 13px;
      font-weight: 500;
      box-shadow: 0 8px 30px rgba(0,0,0,0.2);
      display: flex;
      align-items: center;
      gap: 8px;
      z-index: 999;
      transition: transform 0.45s cubic-bezier(0.4,0,0.2,1), opacity 0.45s;
      opacity: 0;
      white-space: nowrap;
    }

    .toast.show {
      transform: translateX(-50%) translateY(0);
      opacity: 1;
    }

    .toast svg {
      color: var(--success);
    }

    /* ─── Responsive ──────────────────────────────────────── */
    @media (max-width: 860px) {
      .panel-left { display: none; }
      .panel-right {
        width: 100%;
        min-width: 0;
        background: var(--off-white);
      }
    }

    @media (max-width: 480px) {
      .panel-right { padding: 20px 16px; }
      .auth-card { padding: 30px 22px; border-radius: 20px; }
    }