:root {
    --bg: #f8fafc;
    --surface: rgba(255, 255, 255, 0.85);
    --text: #1e293b;
    --sub: #64748b;
    --border: rgba(100, 116, 139, 0.12);
    --accent: #4f46e5;
    --accent-light: #818cf8;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --bezier: cubic-bezier(0.16, 1, 0.3, 1);
}

html.dark {
    --bg: #050507;
    --surface: rgba(15, 15, 20, 0.8);
    --text: #f1f5f9;
    --sub: #94a3b8;
    --border: rgba(255, 255, 255, 0.06);
    --accent: #818cf8;
    --card-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

html { scrollbar-gutter: stable; height: 100%; }

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Comfortaa', cursive; }

body {
    background: var(--bg); color: var(--text); line-height: 1.6;
    -webkit-font-smoothing: antialiased; min-height: 100vh;
    display: flex; flex-direction: column; transition: background 0.4s ease;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    z-index: -1;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ─── NAVIGATION ─── */
nav {
    position: fixed; top: 25px; left: 50%; transform: translateX(-50%);
    z-index: 1001; background: var(--surface);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: 20px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 24px; box-shadow: var(--card-shadow);
    width: auto; max-width: 1400px;
}

.nav-left { display: flex; align-items: center; }
.nav-logo { font-weight: 700; font-size: 15px; color: var(--text); text-decoration: none; letter-spacing: 2px; margin-right: 15px; }
.nav-sections { display: flex; gap: 4px; border-left: 1px solid var(--border); padding-left: 12px; }

.nav-section {
    display: flex; align-items: center; justify-content: center;
    padding: 8px 16px; border-radius: 12px;
    border: 1px solid transparent; background: transparent;
    color: var(--sub); cursor: pointer;
    font-family: 'Comfortaa', cursive; font-size: 11px;
    font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
    transition: all 0.25s var(--bezier);
}
.nav-section:hover { color: var(--text); background: var(--border); }
.nav-section.active { color: var(--accent); background: rgba(79, 70, 229, 0.08); border-color: rgba(79, 70, 229, 0.15); }

.nav-controls { display: flex; align-items: center; gap: 15px; border-left: 1px solid var(--border); margin-left: 15px; padding-left: 15px; }

/* ─── LANG SELECTOR ─── */
.custom-lang-selector { position: relative; user-select: none; }
.lang-selected { display: flex; align-items: center; gap: 8px; cursor: pointer; padding: 6px 10px; border-radius: 12px; transition: background 0.3s var(--bezier); }
.lang-selected:hover { background: var(--border); }
.lang-selected img, .lang-option img { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.lang-selected span, .lang-option span { font-size: 13px; font-weight: 700; color: var(--text); }
.chevron { width: 14px; height: 14px; color: var(--sub); transition: transform 0.3s var(--bezier); }
.custom-lang-selector.open .chevron { transform: rotate(180deg); }
.lang-dropdown {
    position: absolute; top: calc(100% + 15px); right: 0;
    background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
    padding: 8px; box-shadow: var(--card-shadow); backdrop-filter: blur(25px);
    opacity: 0; transform: translateY(-10px); pointer-events: none;
    transition: all 0.3s var(--bezier); z-index: 2000;
}
.custom-lang-selector.open .lang-dropdown { opacity: 1; transform: translateY(0); pointer-events: auto; }
.lang-option { display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-radius: 12px; cursor: pointer; transition: all 0.2s ease; white-space: nowrap; }
.lang-option:hover { background: var(--accent); }
.lang-option:hover span { color: #fff; }

/* ─── THEME TOGGLE ─── */
.theme-toggle { cursor: pointer; position: relative; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; transition: transform 0.6s var(--bezier); }
.theme-toggle svg { position: absolute; width: 100%; height: 100%; color: var(--text); transition: opacity 0.4s var(--bezier), transform 0.5s var(--bezier); fill: none; }
.icon-sun { opacity: 0; transform: scale(0.3) rotate(-90deg); }
.icon-moon { opacity: 1; transform: scale(1) rotate(0deg); }
html.dark .icon-sun { opacity: 1; transform: scale(1) rotate(0deg); }
html.dark .icon-moon { opacity: 0; transform: scale(0.3) rotate(90deg); }

/* ─── MOBILE MENU ─── */
.burger-btn { display: none; width: 22px; height: 16px; position: relative; cursor: pointer; z-index: 1002; margin-left: 10px; }
.burger-btn span { display: block; position: absolute; height: 2px; width: 100%; background: var(--text); border-radius: 2px; transition: .25s ease-in-out; }
.burger-btn span:nth-child(1) { top: 0px; }
.burger-btn span:nth-child(2) { top: 7px; }
.burger-btn span:nth-child(3) { top: 14px; }
.burger-btn.open span:nth-child(1) { top: 7px; transform: rotate(135deg); }
.burger-btn.open span:nth-child(2) { opacity: 0; left: -40px; }
.burger-btn.open span:nth-child(3) { top: 7px; transform: rotate(-135deg); }

.nav-sections-mobile {
    display: none; flex-direction: column; position: absolute; top: calc(100% + 12px); left: 0; width: 100%;
    background: var(--bg); border: 1px solid var(--border); border-radius: 20px;
    padding: 12px; gap: 4px; box-shadow: 0 15px 40px rgba(0,0,0,0.12);
    opacity: 0; transform: translateY(-10px); pointer-events: none; transition: all 0.3s var(--bezier);
}
html.dark .nav-sections-mobile { background: #0d0d10; }
.nav-sections-mobile.open { display: flex; opacity: 1; transform: translateY(0); pointer-events: auto; }
.nav-section-mob { width: 100%; text-align: left; padding: 14px 20px; border-radius: 12px; border: none; background: transparent; color: var(--sub); cursor: pointer; font-size: 13px; font-weight: 700; text-transform: uppercase; }
.nav-section-mob.active { color: var(--accent); background: rgba(79, 70, 229, 0.08); }

/* ─── PAGES ─── */
.page { display: none; padding: 140px 40px 40px; max-width: 1400px; margin: 0 auto; flex: 1; width: 100%; }
.page.active { display: flex; flex-direction: column; animation: fadeInUp 0.7s var(--bezier) forwards; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

header { margin-bottom: 60px; border-left: 4px solid var(--accent); padding-left: 25px; }
header h1 { font-size: 32px; font-weight: 700; letter-spacing: -0.5px; }

/* ─── GRID & CARDS ─── */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 30px; width: 100%; }

.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 32px;
    backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--card-shadow); transition: all 0.5s var(--bezier);
    display: flex; flex-direction: column; position: relative;
    opacity: 0; transform: translateY(30px);
    will-change: transform;
}
.card.visible { opacity: 1; transform: translateY(0); }
.card:hover { transform: translateY(-8px); border-color: var(--accent); box-shadow: 0 20px 40px rgba(0,0,0,0.06); }

/* ─── TAGS ─── */
.project-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
    font-size: 10px; text-transform: uppercase; font-weight: 800;
    padding: 6px 12px; background: rgba(79, 70, 229, 0.1);
    border-radius: 100px; color: var(--accent); letter-spacing: 0.5px;
}
.tag-green  { background: rgba(13, 158, 117, 0.1);  color: #0d9e75; }
.tag-amber  { background: rgba(186, 117, 23, 0.1);  color: #ba7517; }
.tag-coral  { background: rgba(216, 90, 48, 0.1);   color: #d85a30; }
.tag-teal   { background: rgba(14, 165, 233, 0.1);  color: #0284c7; }
.tag-purple { background: rgba(139, 92, 246, 0.1);  color: #7c3aed; }
html.dark .tag-green  { background: rgba(13, 158, 117, 0.15); color: #5dcaa5; }
html.dark .tag-amber  { background: rgba(186, 117, 23, 0.15); color: #fac775; }
html.dark .tag-coral  { background: rgba(216, 90, 48, 0.15);  color: #f0997b; }
html.dark .tag-teal   { background: rgba(14, 165, 233, 0.15); color: #38bdf8; }
html.dark .tag-purple { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }

/* ─── CONTACT CARD ─── */
.contact-card { padding: 45px; display: flex; flex-direction: column; align-items: center; text-align: center; }
.contact-visual { margin-bottom: 20px; width: 64px; height: 64px; background: rgba(79, 70, 229, 0.05); border-radius: 20px; display: flex; align-items: center; justify-content: center; }
.contact-visual svg { width: 32px; height: 32px; color: var(--accent); }
.contact-label { font-size: 10px; text-transform: uppercase; font-weight: 800; color: var(--sub); letter-spacing: 2px; margin-bottom: 8px; }
.contact-value { font-size: 20px; font-weight: 700; margin-bottom: 25px; color: var(--text); }
.contact-main-btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 12px; padding: 16px 28px; white-space: nowrap;
    background: var(--accent); color: #fff; text-decoration: none; border-radius: 100px;
    font-weight: 700; font-size: 14px; transition: all 0.3s var(--bezier);
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.15);
}
.contact-main-btn:hover { transform: translateY(-3px); background: var(--accent-light); }
.contact-main-btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ─── LEGAL ─── */
.legal-box { max-width: 900px; margin: 0 auto; padding: 60px; background: var(--surface); border: 1px solid var(--border); border-radius: 40px; }
.legal-box h2 { color: var(--text); font-size: 32px; margin-bottom: 40px; }
.legal-box h3 { color: var(--text); font-size: 19px; margin: 35px 0 15px; font-weight: 700; }
.legal-box p { color: var(--sub); font-size: 15px; margin-bottom: 12px; line-height: 1.8; }

/* ─── FOOTER ─── */
footer { padding: 50px 40px; text-align: center; flex-shrink: 0; }
footer span { font-size: 12px; color: var(--sub); cursor: pointer; text-transform: uppercase; letter-spacing: 2px; font-weight: 700; transition: color 0.3s ease; }
footer span:hover { color: var(--accent); }

/* ─── EMPTY CARD ─── */
.empty-card { padding: 40px; justify-content: center; align-items: center; text-align: center; border: 2px dashed var(--border); background: rgba(100, 116, 139, 0.02); min-height: 350px; opacity: 0.8; }
.empty-icon { width: 56px; height: 56px; color: var(--sub); margin-bottom: 10px; opacity: 0.5; }

/* ════════════════════════════════════════
   PROFILE — HERO
════════════════════════════════════════ */
.profile-hero {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 40px;
    margin-bottom: 50px;
    padding: 48px 52px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 32px;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
}

.profile-hero-text { display: flex; flex-direction: column; gap: 16px; z-index: 1; }

/* Badge "disponible" */
.profile-available-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(79, 70, 229, 0.08);
    border: 1px solid rgba(79, 70, 229, 0.18);
    color: var(--accent); padding: 6px 14px; border-radius: 100px;
    font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
    width: fit-content;
}
.badge-dot {
    width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
    animation: badgePulse 2.2s ease-in-out infinite;
    flex-shrink: 0;
}
@keyframes badgePulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.45; transform: scale(1.35); }
}

/* Hero title */
.profile-hero h1 {
    font-size: 42px;
    line-height: 1.12;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(100deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bio-text { font-size: 16px; color: var(--sub); max-width: 640px; line-height: 1.8; }

/* Stats row */
.profile-stats { display: flex; gap: 32px; margin-top: 4px; flex-wrap: wrap; }
.profile-stat { display: flex; flex-direction: column; gap: 2px; }
.profile-stat-num { font-size: 28px; font-weight: 700; color: var(--accent); line-height: 1; }
.profile-stat-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--sub); font-weight: 700; }

/* Avatar */
.profile-hero-avatar {
    width: 110px; height: 110px; border-radius: 26px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    z-index: 1; overflow: hidden;
}
.profile-hero-avatar svg {
    width: 100%; height: 100%;
}

/* ════════════════════════════════════════
   PROFILE — SKILLS CARD
════════════════════════════════════════ */
.skill-cloud-card { padding: 36px; }
.skill-full { grid-column: 1 / -1; } /* spans full grid width */

.card-section-title {
    font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
    color: var(--sub); font-weight: 700; margin-bottom: 28px;
}

/* 3-column grid for the 6 skill blocks */
.skill-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Individual skill block */
.skill-block {
    display: flex; flex-direction: column; gap: 14px;
    padding: 20px; border-radius: 20px;
    background: rgba(79, 70, 229, 0.03);
    border: 1px solid var(--border);
    transition: border-color 0.3s ease, background 0.3s ease;
}
.skill-block:hover { background: rgba(79, 70, 229, 0.05); border-color: rgba(79, 70, 229, 0.15); }

.skill-block-header { display: flex; align-items: center; gap: 10px; }

/* Icon bubble */
.skill-block-icon {
    width: 32px; height: 32px; border-radius: 10px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.skill-block-icon svg { width: 16px; height: 16px; }

.skill-icon-indigo { background: rgba(79, 70, 229, 0.12); color: var(--accent); }
.skill-icon-green  { background: rgba(13, 158, 117, 0.12); color: #0d9e75; }
.skill-icon-teal   { background: rgba(14, 165, 233, 0.12); color: #0284c7; }
.skill-icon-purple { background: rgba(139, 92, 246, 0.12); color: #7c3aed; }
.skill-icon-amber  { background: rgba(186, 117, 23, 0.12); color: #ba7517; }
.skill-icon-coral  { background: rgba(216, 90, 48, 0.12);  color: #d85a30; }

html.dark .skill-icon-indigo { background: rgba(129, 140, 248, 0.15); color: var(--accent); }
html.dark .skill-icon-green  { background: rgba(13, 158, 117, 0.15);  color: #5dcaa5; }
html.dark .skill-icon-teal   { background: rgba(14, 165, 233, 0.15);  color: #38bdf8; }
html.dark .skill-icon-purple { background: rgba(139, 92, 246, 0.15);  color: #a78bfa; }
html.dark .skill-icon-amber  { background: rgba(186, 117, 23, 0.15);  color: #fac775; }
html.dark .skill-icon-coral  { background: rgba(216, 90, 48, 0.15);   color: #f0997b; }

.skill-block-label {
    font-size: 11px; text-transform: uppercase; letter-spacing: 1px;
    font-weight: 700; color: var(--accent);
}
.skill-label-green  { color: #0d9e75; }
.skill-label-teal   { color: #0284c7; }
.skill-label-purple { color: #7c3aed; }
.skill-label-amber  { color: #ba7517; }
.skill-label-coral  { color: #d85a30; }

html.dark .skill-label-green  { color: #5dcaa5; }
html.dark .skill-label-teal   { color: #38bdf8; }
html.dark .skill-label-purple { color: #a78bfa; }
html.dark .skill-label-amber  { color: #fac775; }
html.dark .skill-label-coral  { color: #f0997b; }

/* Skill groups (old, kept for compat) */
.skill-groups { display: flex; flex-direction: column; gap: 18px; }
.skill-group { display: flex; flex-direction: column; gap: 10px; }
.skill-group-label {
    font-size: 10px; text-transform: uppercase; letter-spacing: 1px;
    font-weight: 700; color: var(--accent);
}

/* ════════════════════════════════════════
   PROFILE — LANGUAGE CARD
════════════════════════════════════════ */
.language-card { padding: 36px; }

.lang-list { display: flex; flex-direction: column; gap: 18px; margin-top: 4px; }

.lang-item { display: flex; align-items: center; gap: 14px; }

.lang-item img {
    width: 34px; height: 34px; border-radius: 8px;
    object-fit: cover; box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

.lang-details { display: flex; flex-direction: column; flex: 1; gap: 3px; }

.lang-details strong { font-size: 14px; font-weight: 700; color: var(--text); }

.lang-details span { font-size: 11px; color: var(--sub); font-weight: 700; }

.lang-bar-wrap {
    height: 3px; background: var(--border); border-radius: 100px;
    overflow: hidden; margin-top: 2px;
}
.lang-bar {
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    border-radius: 100px;
    transition: width 1s var(--bezier);
}

/* ════════════════════════════════════════
   PROFILE — TRAVEL CARD
════════════════════════════════════════ */
.travel-card { padding: 36px; }

.continent-group { margin-bottom: 18px; }
.continent-group:last-child { margin-bottom: 0; }

.continent-group h4 {
    font-size: 10px; text-transform: uppercase; letter-spacing: 1px;
    font-weight: 700; color: var(--accent);
    margin-bottom: 8px;
}

.flag-row { display: flex; flex-wrap: wrap; gap: 6px; }

.flag-chip {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 13px; padding: 5px 10px;
    background: rgba(79, 70, 229, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: default;
    transition: all 0.2s var(--bezier);
}
.flag-chip img {
    width: 22px; height: 22px; border-radius: 4px;
    object-fit: cover; box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    flex-shrink: 0;
}
.flag-chip span { font-size: 11px; font-weight: 700; color: var(--sub); }
.flag-chip:hover {
    background: rgba(79, 70, 229, 0.1);
    border-color: rgba(79, 70, 229, 0.25);
    transform: translateY(-2px);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
    .grid { grid-template-columns: 1fr; }
    .page { padding: 120px 20px 40px; }
    nav { width: 92%; padding: 8px 16px; top: 15px; }
    .nav-sections { display: none; }
    .burger-btn { display: block; }

    .profile-hero { grid-template-columns: 1fr; padding: 32px 28px; gap: 24px; }
    .profile-hero-avatar { display: none; }
    .profile-hero h1 { font-size: 28px; }
    .bio-text { font-size: 15px; }
    .profile-stats { gap: 20px; }

    .skill-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
    .skill-grid { grid-template-columns: 1fr; }
}