/* ─── VARIABLES CSS ─── */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');
    :root {
      --color-primary:  #1a3a5c;
      --color-accent:   #c8a84b;
      --color-bg:       #f4f3ef;
      --color-surface:  #ffffff;
      --color-text:     #2c2c2c;
      --color-muted:    #6b7280;
      --color-border:   #ddd8ce;
      --font-heading:   'Playfair Display', Georgia, serif;
      --font-body:      'Source Sans 3', sans-serif;
      --radius:         6px;
      --shadow:         0 2px 12px rgba(26, 58, 92, 0.10);
      --transition:     0.25s ease;
      --nav-height:     56px;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-body);
      background-color: var(--color-bg);
      color: var(--color-text);
      font-size: 16px;
      line-height: 1.7;
      padding-top: var(--nav-height);
    }
    a { color: var(--color-primary); text-decoration: none; }
    a:hover { color: var(--color-accent); text-decoration: underline; }
    .container { max-width: 900px; margin: 0 auto; padding: 0 24px; }
    section { padding: 56px 0; }
    section:nth-child(even) { background-color: var(--color-surface); }

    /* ─── NAV FIJO ─── */
    .navbar {
      position: fixed;
      top: 0; left: 0; right: 0;
      height: var(--nav-height);
      background: var(--color-primary);
      z-index: 1000;
      display: flex;
      align-items: center;
      box-shadow: 0 2px 10px rgba(0,0,0,0.25);
    }

    .navbar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 900px;
    }

    .nav-brand {
      font-family: var(--font-heading);
      font-size: 0.95rem;
      color: var(--color-accent);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      gap: 4px;
      list-style: none;
      flex-wrap: wrap;
    }

    .nav-links a {
      font-size: 0.82rem;
      font-weight: 600;
      letter-spacing: 0.8px;
      text-transform: uppercase;
      color: #c8d6e5;
      padding: 6px 10px;
      border-radius: var(--radius);
      transition: color var(--transition), background var(--transition);
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: #ffffff;
      background: rgba(255,255,255,0.08);
      text-decoration: none;
    }

    /* Scroll spy: clase activa */
    .nav-links a.active {
      color: var(--color-accent);
      background: rgba(200, 168, 75, 0.12);
      border-bottom: 2px solid var(--color-accent);
    }

    /* ─── HEADER ─── */
    .header {
      background: linear-gradient(135deg, var(--color-primary) 0%, #0f2540 100%);
      color: #ffffff;
      padding: 72px 0 60px;
    }
    .header-inner { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; }
    .header-photo-wrap {
      width: 140px; height: 140px; border-radius: 50%;
      border: 4px solid var(--color-accent);
      flex-shrink: 0; overflow: hidden;
      background: linear-gradient(135deg, #1a3a5c 0%, #0f2540 100%);
      box-shadow: 0 0 0 6px rgba(200,168,75,0.18);
    }
    .header-photo {
      width: 100%; height: 100%; object-fit: cover;
      object-position: center top; display: block;
      mix-blend-mode: luminosity;
      filter: brightness(1.05) contrast(1.05);
    }
    .header-info { flex: 1; min-width: 200px; }
    .header-name {
      font-family: var(--font-heading);
      font-size: 2.4rem; font-weight: 700;
      letter-spacing: 0.5px; line-height: 1.2; margin-bottom: 8px;
    }
    .header-title {
      font-size: 1.05rem; font-weight: 300;
      color: var(--color-accent); letter-spacing: 1.5px;
      text-transform: uppercase; margin-bottom: 16px;
    }
    .header-contact {
      display: flex; flex-wrap: wrap;
      gap: 18px; font-size: 0.9rem; color: #c8d6e5;
    }
    .header-contact span { display: flex; align-items: center; gap: 6px; }
    .header-contact a { color: #c8d6e5; }
    .header-contact a:hover { color: var(--color-accent); text-decoration: underline; }

    /* ─── SOBRE MÍ ─── */
    .about-text {
      font-size: 1.05rem; color: var(--color-text);
      max-width: 720px; font-weight: 300; line-height: 1.8;
    }
    .about-text strong { color: var(--color-primary); font-weight: 600; }

    /* ─── TÍTULOS ─── */
    .section-title {
      font-family: var(--font-heading);
      font-size: 1.75rem; color: var(--color-primary);
      display: inline-block; transition: color var(--transition);
    }
    .section-title-border {
      font-family: var(--font-heading);
      font-size: 1.75rem; color: var(--color-primary);
      margin-bottom: 32px; padding-bottom: 12px;
      border-bottom: 2px solid var(--color-accent);
      display: inline-block;
    }

    /* ─── ACORDEÓN ─── */
    .accordion-section { border-bottom: 1px solid var(--color-border); }
    .accordion-trigger {
      display: flex; align-items: center;
      justify-content: space-between;
      cursor: pointer; padding: 28px 0 24px;
      user-select: none; list-style: none;
    }
    .accordion-trigger:hover .section-title { color: var(--color-accent); }
    .accordion-icon {
      width: 32px; height: 32px;
      border: 2px solid var(--color-accent);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.1rem; color: var(--color-accent);
      transition: transform var(--transition), background var(--transition);
      flex-shrink: 0;
    }
    .accordion-trigger[aria-expanded="true"] .accordion-icon {
      transform: rotate(45deg);
      background: var(--color-accent);
      color: var(--color-primary);
    }
    .accordion-body {
      overflow: hidden; max-height: 0;
      transition: max-height 0.45s cubic-bezier(0.4,0,0.2,1), opacity 0.35s ease, padding 0.35s ease;
      opacity: 0; padding-bottom: 0;
    }
    .accordion-body.open { max-height: 2000px; opacity: 1; padding-bottom: 36px; }
    .accordion-hint {
      font-size: 0.8rem; color: var(--color-muted);
      font-style: italic; margin-bottom: 8px; letter-spacing: 0.3px;
    }

    /* ─── EXPERIENCIA ─── */
    .exp-list { display: flex; flex-direction: column; gap: 36px; }
    .exp-item { border-left: 3px solid var(--color-accent); padding-left: 24px; position: relative; }
    .exp-item::before {
      content: ''; position: absolute; left: -8px; top: 4px;
      width: 13px; height: 13px; border-radius: 50%;
      background: var(--color-accent); border: 2px solid var(--color-surface);
    }
    .exp-header { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 4px; margin-bottom: 4px; }
    .exp-role { font-family: var(--font-heading); font-size: 1.1rem; color: var(--color-primary); }
    .exp-period { font-size: 0.85rem; font-weight: 600; color: var(--color-muted); background: #eee9de; padding: 2px 10px; border-radius: 20px; white-space: nowrap; }
    .exp-company { font-size: 0.92rem; color: var(--color-muted); margin-bottom: 10px; }
    .exp-company a { font-weight: 600; color: var(--color-primary); }
    .exp-company a:hover { color: var(--color-accent); }
    .exp-desc { font-size: 0.97rem; font-weight: 300; }
    .exp-desc ul { padding-left: 18px; margin-top: 6px; }
    .exp-desc li { margin-bottom: 4px; }

    /* ─── FORMACIÓN ─── */
    .edu-list { display: flex; flex-direction: column; gap: 24px; }
    .edu-item { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px 24px; }
    .edu-degree { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-primary); margin-bottom: 4px; }
    .edu-institution { font-size: 0.9rem; color: var(--color-muted); font-weight: 600; margin-bottom: 6px; }
    .edu-status { display: inline-block; font-size: 0.8rem; font-weight: 600; padding: 2px 10px; border-radius: 20px; }
    .edu-status.en-curso { background: #e8f0fb; color: #1a3a5c; }
    .edu-status.completo { background: #eaf4ec; color: #276b3a; }

    /* ─── HABILIDADES ─── */
    .skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
    .skill-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; transition: box-shadow var(--transition), transform var(--transition); }
    .skill-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
    .skill-card-title { font-weight: 600; font-size: 0.85rem; letter-spacing: 1px; text-transform: uppercase; color: var(--color-accent); margin-bottom: 12px; }
    .skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .skill-tag { background: #eef2f8; color: var(--color-primary); font-size: 0.85rem; font-weight: 600; padding: 4px 12px; border-radius: 20px; border: 1px solid #d5dff0; }

    /* ─── CONTACTO ─── */
    .contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
    .contact-info p { font-size: 0.97rem; color: var(--color-muted); margin-bottom: 20px; font-weight: 300; }
    .contact-detail { display: flex; flex-direction: column; gap: 12px; font-size: 0.95rem; }
    .contact-detail span { display: flex; gap: 10px; align-items: center; }
    .contact-detail strong { color: var(--color-primary); min-width: 60px; }
    .contact-form { display: flex; flex-direction: column; gap: 16px; }
    .form-group { display: flex; flex-direction: column; gap: 6px; }
    .form-group label { font-size: 0.85rem; font-weight: 600; color: var(--color-primary); letter-spacing: 0.5px; }
    .form-group input,
    .form-group textarea {
      font-family: var(--font-body); font-size: 0.95rem;
      padding: 10px 14px; border: 1px solid var(--color-border);
      border-radius: var(--radius); background: var(--color-bg);
      color: var(--color-text); transition: border-color var(--transition); outline: none;
    }
    .form-group input:focus,
    .form-group textarea:focus { border-color: var(--color-primary); }
    .form-group textarea { resize: vertical; min-height: 110px; }

    /* ─── BOTÓN FORMULARIO CON EFECTO ACTIVE ─── */
    .btn-primary {
      font-family: var(--font-body); font-size: 0.95rem;
      font-weight: 600; letter-spacing: 1px; text-transform: uppercase;
      background: var(--color-primary); color: #ffffff;
      border: none; padding: 12px 28px;
      border-radius: var(--radius); cursor: pointer;
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
      align-self: flex-start;
      box-shadow: 0 3px 0 #0f2540;
    }
    .btn-primary:hover {
      background: var(--color-accent);
      color: var(--color-primary);
      box-shadow: 0 3px 0 #a07a20;
      transform: translateY(-1px);
    }
    /* Efecto al presionar: el botón "se hunde" */
    .btn-primary:active {
      transform: translateY(3px);
      box-shadow: none;
      background: #0f2540;
      color: var(--color-accent);
    }

    .form-msg { display: none; font-size: 0.9rem; color: #276b3a; font-weight: 600; padding: 8px 0; }

    /* ─── FOOTER ─── */
    .footer { background: var(--color-primary); color: #a0b4c8; text-align: center; padding: 28px 24px; font-size: 0.85rem; }

    /* ─── BOTÓN ARRIBA ─── */
    .btn-top {
      position: fixed; bottom: 32px; right: 32px;
      background: var(--color-accent); color: var(--color-primary);
      border: none; border-radius: 50%;
      width: 46px; height: 46px; font-size: 1.3rem;
      cursor: pointer; box-shadow: 0 4px 14px rgba(0,0,0,0.2);
      display: none; align-items: center; justify-content: center;
      transition: background var(--transition), transform var(--transition);
      z-index: 999;
    }
    .btn-top:hover { background: var(--color-primary); color: #ffffff; transform: translateY(-3px); }
    .btn-top.visible { display: flex; }

    /* ─── RESPONSIVE ─── */
    @media (max-width: 640px) {
      .header-name { font-size: 1.7rem; }
      .contact-wrapper { grid-template-columns: 1fr; }
      .header-inner { flex-direction: column; text-align: center; }
      .header-contact { justify-content: center; }
      .nav-brand { display: none; }
      .nav-links { gap: 2px; }
      .nav-links a { font-size: 0.72rem; padding: 4px 6px; }
    }