

:root {
        --bg: #fff;
        --fg: #111;
        --muted: #f5f5f5;
        --line: #e0e0e0;
        --accent: #777;
        --success: #28a745;
        --danger: #dc3545;
        --warning: #ffc107;

        /* Tipografía */
        --font-body: "Inter", sans-serif;
        --font-headline: "Playfair Display", serif;
      }

      /* Reset y General */
      *,
      *::before,
      *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }

      body {
        font-family: var(--font-body);
        font-size: 16px;
        line-height: 1.6;
        color: var(--fg);
        background-color: var(--bg);
        overflow-x: hidden;
      }

      img {
        max-width: 100%;
        height: auto;
        display: block;
      }

      /* Utilidades */
      .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
      }

      .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
      }

      /* Tipografía */
      h1, h2, h3 {
        font-family: var(--font-headline);
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 1rem;
      }

      h1 { font-size: 3rem; }
      h2 { font-size: 2.5rem; }
      h3 { font-size: 1.75rem; }

      /* Enlaces */
      a {
        color: var(--fg);
        text-decoration: none;
        transition: color 0.3s ease;
      }

      a:hover {
        color: var(--accent);
      }

      /* Botones */
      .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        padding: 1rem 2rem;
        font-size: 1rem;
        font-weight: 600;
        text-align: center;
        border-radius: 0.25rem;
        cursor: pointer;
        transition: all 0.3s ease;
        border: none;
        outline: none;
        text-decoration: none;
      }

      .btn--primary {
        background-color: var(--fg);
        color: var(--bg);
        border: 1.5px solid var(--fg);
      }

      .btn--primary:hover {
        background-color: transparent;
        color: var(--fg);
        border-color: var(--fg);
        transform: translateY(-2px);
      }

      .btn--ghost {
        background-color: transparent;
        color: var(--fg);
        border: 1.5px solid var(--line);
      }

      .btn--ghost:hover {
        background-color: var(--fg);
        color: var(--bg);
        border-color: var(--fg);
      }

      .btn--danger {
        background-color: var(--danger);
        color: white;
        border: 1.5px solid var(--danger);
      }

      .btn--danger:hover {
        background-color: transparent;
        color: var(--danger);
        border-color: var(--danger);
      }

      /* Header */
      .header {
        position: sticky;
        top: 0;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.75);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        z-index: 100;
        padding: 1rem 0;
      }

      .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
      }

      .navbar__logo a {
        font-family: var(--font-headline);
        font-size: 1.5rem;
        font-weight: 700;
      }

      .navbar__logo strong {
        color: #111;
      }

      .navbar__content {
        display: flex;
        align-items: center;
        gap: 2rem;
      }

      .navbar__menu ul {
        list-style: none;
        display: flex;
      }

      .navbar__menu li {
        margin-left: 2rem;
      }

      .navbar__menu a {
        position: relative;
        display: inline-block;
        padding: 0.2rem 1rem;
        border-radius: 0.25rem;
        transition: color 0.3s ease;
      }

      .navbar__menu a::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: -4px;
        width: 0%;
        height: 2px;
        background: #111;
        transition: width 0.3s ease;
      }

      .navbar__menu a:hover::after,
      .navbar__menu a.active::after {
        width: 100%;
      }

      /* Admin Login Button */
      .admin-login-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        border: none;
        background: transparent;
        color: var(--accent);
        font-size: 1rem;
        cursor: pointer;
        border-radius: 50%;
        transition: all 0.3s ease;
        opacity: 0.6;
      }

      .admin-login-btn:hover {
        opacity: 1;
        background: var(--muted);
        transform: scale(1.1);
      }

      .admin-login-btn.admin-active {
        color: var(--success);
        opacity: 1;
      }

      .navbar__mobile-btn {
        background: none;
        border: none;
        color: var(--fg);
        font-size: 2rem;
        cursor: pointer;
        display: none;
      }

      /* Modal */
      .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 1000;
        opacity: 0;
        transition: opacity 0.3s ease;
      }

      .modal-overlay.active {
        display: flex;
        opacity: 1;
      }

      .modal {
        background: var(--bg);
        border-radius: 1rem;
        box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
        max-width: 400px;
        width: 90%;
        max-height: 90vh;
        overflow-y: auto;
        transform: scale(0.9);
        transition: transform 0.3s ease;
      }

      .modal-overlay.active .modal {
        transform: scale(1);
      }

      .modal-header {
        padding: 1.5rem 2rem 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }

      .modal-title {
        font-size: 1.25rem;
        font-weight: 600;
        margin: 0;
      }

      .modal-close {
        background: none;
        border: none;
        font-size: 1.5rem;
        cursor: pointer;
        color: var(--accent);
        padding: 0;
        width: 32px;
        height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        transition: all 0.3s ease;
      }

      .modal-close:hover {
        background: var(--muted);
        color: var(--fg);
      }

      .modal-body {
        padding: 1.5rem 2rem 2rem;
      }

      /* Hero Banner */
      .hero {
        position: relative;
        min-height: 50vh;
        display: grid;
        place-items: center;
        padding: 6rem 1.25rem 4rem;
        background: linear-gradient(-45deg, #0d0d0d, #5e5d5d, #b6b3b3, #111);
        background-size: 300% 300%;
        animation: gradientMove 10s ease infinite;
        color: #111;
        overflow: hidden;
      }

      .hero__content {
        text-align: center;
        max-width: 800px;
        margin-inline: auto;
      }

      .hero__title {
        font-family: var(--font-headline);
        font-weight: 700;
        font-size: clamp(2.5rem, 6vw, 4rem);
        line-height: 1.05;
        margin-bottom: 1rem;
      }

      .hero__subtitle {
        max-width: 60ch;
        margin: 0 auto 1.25rem;
        font-size: clamp(1rem, 2.2vw, 1.15rem);
        opacity: 0.9;
      }

      @keyframes gradientMove {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
      }

      

      /* Panel de Administración */
      .admin-panel {
        background: var(--muted);
        padding: 2rem 0;
        border-bottom: 1px solid var(--line);
      }

      .admin-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 2rem;
      }

      .admin-header h2 {
        margin: 0;
        color: var(--fg);
      }

      .project-form {
        background: var(--bg);
        padding: 2rem;
        border-radius: 1rem;
        box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
        border: 1px solid var(--line);
      }

      .form-grid {
        display: grid;
        gap: 1.5rem;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        margin-bottom: 2rem;
      }

      .form-group {
        display: flex;
        flex-direction: column;
      }

      .form-group.full {
        grid-column: 1 / -1;
      }

      .form-group label {
        font-weight: 600;
        margin-bottom: 0.5rem;
        color: var(--fg);
      }

      .form-group input,
      .form-group select,
      .form-group textarea {
        padding: 1rem;
        font-size: 1rem;
        border: 1px solid var(--line);
        border-radius: 0.25rem;
        font-family: var(--font-body);
        transition: border-color 0.3s ease;
      }

      .form-group input:focus,
      .form-group select:focus,
      .form-group textarea:focus {
        outline: none;
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(119, 119, 119, 0.1);
      }

      .image-preview {
        margin-top: 1rem;
        border: 2px dashed var(--line);
        border-radius: 0.5rem;
        padding: 1rem;
        text-align: center;
        min-height: 150px;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .image-preview img {
        max-width: 200px;
        max-height: 150px;
        object-fit: cover;
        border-radius: 0.5rem;
      }

      .image-preview.empty {
        color: var(--accent);
        font-style: italic;
      }

      .form-actions {
        display: flex;
        gap: 1rem;
        justify-content: flex-end;
      }

      /* Portafolio Principal */
      .portfolio {
        padding: 4rem 0;
      }

      .add-project-container {
        text-align: center;
        margin-bottom: 3rem;
      }

      .projects-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
        gap: 3rem;
        margin-bottom: 2rem;
      }

      .project-card {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 2rem;
        background: var(--bg);
        border: 1px solid var(--line);
        border-radius: 1rem;
        overflow: hidden;
        box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        align-items: start;
      }

      .project-card:hover {
        transform: translateY(-0.25rem);
        box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
      }

      .project-content {
        padding: 2rem;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        min-height: 100%;
      }

      .project-header {
        margin-bottom: 1rem;
      }

      .project-title {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
        color: var(--fg);
      }

      .project-category {
        background: var(--muted);
        color: var(--accent);
        padding: 0.25rem 0.75rem;
        border-radius: 999px;
        font-size: 0.9rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
      }

      .project-description {
        color: var(--accent);
        margin-bottom: 1.5rem;
        line-height: 1.6;
      }

      .project-technologies {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-bottom: 1.5rem;
      }

      .tech-tag {
        background: var(--line);
        color: var(--fg);
        padding: 0.25rem 0.75rem;
        border-radius: 999px;
        font-size: 0.85rem;
        font-weight: 500;
      }

      .project-links {
        display: flex;
        gap: 1rem;
        margin-bottom: 1rem;
      }

      .project-link {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.75rem 1rem;
        background: var(--fg);
        color: var(--bg);
        border-radius: 0.25rem;
        font-weight: 600;
        font-size: 0.9rem;
        transition: all 0.3s ease;
      }

      .project-link:hover {
        background: var(--accent);
        transform: translateY(-2px);
      }

      .project-admin {
        display: flex;
        gap: 0.5rem;
        padding-top: 1rem;
        border-top: 1px solid var(--line);
      }

      .project-mockup {
        position: relative;
        background: var(--muted);
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 300px;
      }

      .project-mockup img {
        width: 100%;
        height: 100%;
        object-fit: cover;
      }

      .mockup-placeholder {
        color: var(--accent);
        text-align: center;
        padding: 2rem;
      }

      /* Empty State */
      .empty-state {
        text-align: center;
        padding: 4rem 2rem;
        color: var(--accent);
      }

      .empty-state i {
        font-size: 3rem;
        margin-bottom: 1rem;
        opacity: 0.5;
      }

      .empty-state h3 {
        margin-bottom: 0.5rem;
        color: var(--fg);
      }

      /* CTA Section */
      .cta-section {
        background: var(--muted);
        padding: 4rem 0;
        text-align: center;
      }

      .cta-content {
        max-width: 800px;
        margin: 0 auto;
      }

      .cta-content h2 {
        margin-bottom: 1rem;
        color: var(--fg);
      }

      .cta-content p {
        font-size: 1.1rem;
        line-height: 1.6;
        margin-bottom: 2rem;
        color: var(--accent);
      }

      .cta-buttons {
        display: flex;
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
      }

      /* Footer */
      .footer {
        padding: 2rem 0;
        background-color: var(--muted);
        text-align: center;
        border-top: 1px solid var(--line);
      }

      .footer p {
        color: var(--accent);
      }

      /* Botones flotantes */
      #back-to-top {
        position: fixed;
        bottom: 2rem;
        right: 2rem;
        background-color: var(--fg);
        color: var(--bg);
        border: none;
        border-radius: 50%;
        width: 3rem;
        height: 3rem;
        font-size: 1rem;
        cursor: pointer;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
        z-index: 99;
      }

      #back-to-top.show {
        opacity: 1;
        visibility: visible;
      }

      #back-to-top:hover {
        transform: translateY(-3px);
      }

      .whatsapp-button {
        position: fixed;
        bottom: 2rem;
        left: 2rem;
        display: flex;
        justify-content: center;
        align-items: center;
        background-color: #000;
        color: #fff;
        border-radius: 50%;
        width: 3rem;
        height: 3rem;
        font-size: 1.5rem;
        text-decoration: none;
        z-index: 99;
        transition: transform 0.3s ease;
      }

      .whatsapp-button:hover {
        transform: scale(1.1);
        color: #fff;
      }

      /* Alertas y Notificaciones */
      .alert {
        padding: 1rem 1.5rem;
        border-radius: 0.5rem;
        margin-bottom: 1rem;
        font-weight: 500;
      }

      .alert--success {
        background: rgba(40, 167, 69, 0.1);
        color: var(--success);
        border: 1px solid rgba(40, 167, 69, 0.2);
      }

      .alert--error {
        background: rgba(220, 53, 69, 0.1);
        color: var(--danger);
        border: 1px solid rgba(220, 53, 69, 0.2);
      }

      .alert--warning {
        background: rgba(255, 193, 7, 0.1);
        color: #856404;
        border: 1px solid rgba(255, 193, 7, 0.2);
      }

      /* Loading States */
      .loading {
        opacity: 0.6;
        pointer-events: none;
      }

      .spinner {
        display: inline-block;
        width: 20px;
        height: 20px;
        border: 3px solid rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        border-top-color: #fff;
        animation: spin 1s ease-in-out infinite;
      }

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

      /* Responsive Design */
      @media (max-width: 1024px) {
        .projects-grid {
          grid-template-columns: 1fr;
          gap: 2rem;
        }
        
        .project-card {
          grid-template-columns: 1fr;
          gap: 0;
        }
        
        .project-mockup {
          order: -1;
          min-height: 250px;
        }
        
        .form-grid {
          grid-template-columns: 1fr;
        }
      }

      @media (max-width: 768px) {
        .hero {
          min-height: 40vh;
          padding: 4rem 1rem 3rem;
        }
        
        .hero__title {
          font-size: 2.5rem;
        }

        .navbar__content {
          gap: 1rem;
        }
        
        .navbar__menu {
          display: none;
          position: absolute;
          top: 100%;
          left: 0;
          width: 100%;
          background-color: var(--bg);
          padding: 1rem;
          box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
        }

        .navbar__menu ul {
          flex-direction: column;
          align-items: center;
        }

        .navbar__menu li {
          margin: 0.5rem 0;
        }

        .navbar__mobile-btn {
          display: block;
        }

        .navbar__menu.is-open {
          display: block;
        }
        
        .project-links {
          flex-direction: column;
        }
        
        .project-admin {
          flex-direction: column;
        }
        
        .cta-buttons {
          flex-direction: column;
          align-items: center;
        }
        
        .form-actions {
          flex-direction: column;
        }
        
        .admin-header {
          flex-direction: column;
          gap: 1rem;
          text-align: center;
        }

        /* Mostrar botão mobile em tablets */
        .navbar__mobile-btn {
          display: block;
        }

        .navbar__menu {
          display: none;
        }

        .navbar__menu.is-open {
          display: block;
        }

        /* Hide "Diniz Alves" in tablet mode for all pages */
        .navbar__logo strong {
          font-size: 0 !important;
        }
        
        .navbar__logo strong::before {
          content: "Cereja" !important;
          font-size: 1.5rem !important;
          font-weight: 700 !important;
        }
      }

      @media (max-width: 640px) {
        .portfolio {
          padding: 2rem 0;
        }
        
        .project-content {
          padding: 1.5rem;
        }
        
        .project-mockup {
          min-height: 200px;
        }
        
        .cta-section {
          padding: 3rem 0;
        }
        
        .hero {
          padding: 3rem 1rem 2rem;
        }

        /* Mostrar botão mobile em celulares */
        .navbar__mobile-btn {
          display: block;
        }

        .navbar__menu {
          display: none;
        }

        .navbar__menu.is-open {
          display: block;
        }

        /* Hide "Diniz Alves" in mobile mode for all pages */
        .navbar__logo strong {
          font-size: 0 !important;
        }
        
        .navbar__logo strong::before {
          content: "Cereja" !important;
          font-size: 1.5rem !important;
          font-weight: 700 !important;
        }
      }

      /* Animaciones */
      @keyframes fadeInUp {
        from {
          opacity: 0;
          transform: translateY(30px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      .fade-in {
        animation: fadeInUp 0.6s ease-out;
      }

      /* Estados de hover mejorados */
      @media (hover: hover) {
        .project-card:hover .project-mockup img {
          transform: scale(1.05);
          transition: transform 0.3s ease;
        }
      }

      /* Reducir animaciones para usuarios que lo prefieran */
      @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
          animation-duration: 0.01ms !important;
          animation-iteration-count: 1 !important;
          transition-duration: 0.01ms !important;
          scroll-behavior: auto !important;
        }
        
        .hero {
          animation: none;
          background-position: 50% 50%;
        }
      }

      /* Focus visible para accesibilidad */
      *:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
      }

      /* Mejoras de contraste */
      .project-link:focus-visible {
        outline: 2px solid var(--bg);
        outline-offset: 2px;
      }

      /* Estados de validación de formulario */
      .form-group input:invalid:not(:placeholder-shown),
      .form-group textarea:invalid:not(:placeholder-shown),
      .form-group select:invalid {
        border-color: var(--danger);
      }

      .form-group input:valid,
      .form-group textarea:valid,
      .form-group select:valid {
        border-color: var(--success);
      }



      /* Typewriter reutilizable */
  .typer{
  display:inline-block;
  white-space:nowrap;
  min-width:20ch;
  }

  .typer::after{
  content:"│";
  display:inline-block;
  margin-left:.1ch;
  animation: caretBlink 1s steps(1) infinite;
  opacity:.85;
  }
  
  /* En portafolio no queremos el prefijo "Tu " */
  .typer--portfolio::before{ content:""; }

  @keyframes caretBlink{
  0%,49%{opacity:0}
  50%,100%{opacity:1}
  }

/* Responsivo: evita desbordes en móvil */
@media (max-width:640px){
  .hero__title{ white-space:normal }
  .typer{ min-width:0; white-space:normal }
}
