/* ===== VARIABLES CSS ===== */
:root {
    --primary:        #0d6efd;
    --primary-dark:   #0b5ed7;
    --secondary:      #6c757d;
    --dark:           #0f1117;
    --dark-soft:      #1e2433;
    --light-bg:       #f8f9fa;
    --white:          #ffffff;
    --border:         #e9ecef;
    --text-muted:     #6c757d;
    --success:        #25d366;
    --radius:         14px;
    --radius-sm:      8px;
    --shadow-sm:      0 2px 12px rgba(0,0,0,0.06);
    --shadow-md:      0 6px 24px rgba(0,0,0,0.10);
    --shadow-lg:      0 16px 48px rgba(0,0,0,0.12);
    --transition:     all 0.3s ease;
    
    /* Light theme */
    --bg-primary:     #ffffff;
    --bg-secondary:   #f8f9fa;
    --text-primary:   #0f1117;
    --text-secondary: #6c757d;
    --border-color:   #e9ecef;
    --navbar-bg:      rgba(255, 255, 255, 0.82);
}

/* ===== DARK THEME ===== */
html.dark-theme {
    --primary:        #4a9eff;
    --primary-dark:   #3d85d6;
    --secondary:      #b0b8c1;
    --dark:           #e4e6eb;
    --dark-soft:      #e4e6eb;
    --light-bg:       #2d3748;
    --white:          #1a202c;
    --border:         #374151;
    --text-muted:     #9ca3af;
    --radius:         14px;
    --radius-sm:      8px;
    --transition:     all 0.3s ease;
    
    /* Dark theme */
    --bg-primary:     #1a202c;
    --bg-secondary:   #2d3748;
    --text-primary:   #e4e6eb;
    --text-secondary: #b0b8c1;
    --border-color:   #374151;
    --navbar-bg:      rgba(13, 16, 22, 0.88);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image:
        linear-gradient(rgba(13, 110, 253, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 110, 253, 0.08) 1px, transparent 1px);
    background-size: 60px 60px;
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}
html.dark-theme body {
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
}

/* Sections semi-transparent so the grid bleeds through */
section { background-color: transparent !important; }
section.bg-light { background-color: rgba(248, 249, 250, 0.82) !important; }
html.dark-theme section.bg-light { background-color: rgba(30, 38, 52, 0.82) !important; }

@keyframes moveBackground {
    0% { background-position: 0 0; }
    100% { background-position: 200px 200px; }
}

/* ===== NAVBAR ===== */
#mainNavbar {
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(13, 110, 253, 0.12);
    background-color: var(--navbar-bg);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    transition: var(--transition);
}
#mainNavbar.scrolled { box-shadow: 0 2px 20px rgba(13,110,253,0.08); }

/* Hamburguesa visible en tema oscuro */
html.dark-theme .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3);
}
html.dark-theme .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2C255%2C255%2C0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.navbar-brand { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.brand-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px;
    background-color: var(--primary); color: var(--white);
    border-radius: var(--radius-sm); font-size: 0.9rem;
}
.brand-text { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); }
.nav-link {
    color: var(--text-primary) !important; font-weight: 500; font-size: 0.95rem;
    padding: 0.5rem 0.85rem !important; border-radius: var(--radius-sm); transition: var(--transition);
}
.nav-link:hover { background-color: var(--bg-secondary); color: var(--primary) !important; }
.btn-nav-contact { background-color: var(--primary) !important; color: var(--white) !important; font-weight: 600 !important; }
.btn-nav-contact:hover { background-color: var(--primary-dark) !important; color: var(--white) !important; }

/* Theme & Language Controls */
.theme-language-controls {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    margin-left: 1rem;
}
.control-select {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}
.control-select:hover {
    border-color: var(--primary);
    background-color: var(--bg-secondary);
}
.theme-toggle {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.1rem;
}
.theme-toggle:hover {
    background-color: var(--bg-secondary);
    border-color: var(--primary);
}

/* ===== HERO ===== */
.hero-section { 
    padding: 4.5rem 0 5rem; 
    background-color: var(--bg-primary);
    transition: var(--transition);
}
.min-vh-85 { min-height: 82vh; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: linear-gradient(135deg, #e8f3ff 0%, #f0f9ff 100%);
    color: var(--primary);
    font-size: 0.85rem; font-weight: 600;
    padding: 0.5rem 1.2rem; border-radius: 30px; 
    border: 1.5px solid #b6d4fe;
    box-shadow: 0 2px 8px rgba(13,110,253,0.1);
    transition: var(--transition);
}
html.dark-theme .hero-badge {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1f3a 100%);
    color: var(--primary);
    border: 1.5px solid rgba(74,158,255,0.3);
    box-shadow: 0 2px 8px rgba(74,158,255,0.1);
}
.hero-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(13,110,253,0.15);
    border-color: var(--primary);
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800; line-height: 1.2; 
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 1.35rem; font-weight: 700; color: var(--primary);
    letter-spacing: 0.5px;
}
.hero-lead { 
    font-size: 1.1rem; color: var(--text-secondary); max-width: 520px; line-height: 1.8;
    font-weight: 500;
}

.hero-tech-stack { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.tech-pill {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.8rem; font-weight: 600;
    padding: 0.5rem 1.1rem; border-radius: 30px; 
    border: 1px solid var(--border-color);
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: var(--transition);
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.tech-pill:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(13,110,253,0.2);
}
.tech-pill i { 
    color: var(--primary);
    font-size: 0.85rem;
}
.tech-pill:hover i {
    color: #fff;
}

/* Avatar */
.hero-avatar-wrapper { position: relative; width: 300px; height: 300px; }
.hero-avatar {
    width: 260px; height: 260px;
    background: linear-gradient(135deg, #e8f3ff 0%, #f0f9ff 100%);
    border-radius: 50%;
    border: 8px solid var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 7rem; color: var(--primary); margin: 20px auto 0;
    box-shadow: 0 10px 40px rgba(13,110,253,0.15);
    position: relative;
    overflow: hidden;
    animation: avatarPulse 3s ease-in-out infinite;
}
.hero-avatar-img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: 50%;
}
@keyframes avatarPulse {
    0%, 100% { box-shadow: 0 10px 40px rgba(13,110,253,0.15); }
    50% { box-shadow: 0 15px 50px rgba(13,110,253,0.25); }
}
.floating-badge {
    position: absolute;
    background: linear-gradient(135deg, var(--white) 0%, #f8f9fa 100%);
    border: 2px solid var(--primary); border-radius: 30px;
    padding: 0.6rem 1.2rem; font-size: 0.8rem; font-weight: 600; color: var(--primary);
    box-shadow: 0 6px 24px rgba(13,110,253,0.2);
    display: flex; align-items: center; gap: 0.5rem; white-space: nowrap;
    animation: float 3s ease-in-out infinite;
    transition: var(--transition);
}
.floating-badge i { color: inherit; font-size: 0.9rem; }
.badge-top   { top: 0; left: 50%; transform: translateX(-50%); }
.badge-left  { bottom: 60px; left: -20px; animation-delay: 1s; }
.badge-right { bottom: 30px; right: -10px; animation-delay: 2s; }

@keyframes float {
    0%,100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}
.badge-top { animation: floatCenter 3s ease-in-out infinite; }
@keyframes floatCenter {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(-8px); }
}

/* Botones */
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #0b5ed7 100%);
    border-color: var(--primary);
    font-weight: 600; padding: 0.85rem 2rem; border-radius: var(--radius-sm); 
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(13,110,253,0.2);
    position: relative;
    overflow: hidden;
}
.btn-primary::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: rgba(255,255,255,0.2);
    transition: left 0.3s ease;
}
.btn-primary:hover::before {
    left: 100%;
}
.btn-primary:hover {
    transform: translateY(-3px); 
    box-shadow: 0 8px 24px rgba(13,110,253,0.35);
}
.btn-outline-primary {
    color: var(--primary); border-color: var(--primary);
    font-weight: 600; padding: 0.85rem 2rem; border-radius: var(--radius-sm); 
    transition: var(--transition);
    border-width: 2px;
    position: relative;
}
.btn-outline-primary:hover {
    background-color: var(--primary); 
    border-color: var(--primary); 
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(13,110,253,0.25);
}

/* ===== SECTION TAG ===== */
.section-tag {
    display: inline-block;
    background-color: var(--bg-secondary); color: var(--primary);
    font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
    padding: 0.3rem 0.9rem; border-radius: 30px; border: 1px solid var(--border-color);
}

/* ===== SOBRE MÍ ===== */
.about-card {
    background-color: var(--light-bg); border-radius: var(--radius);
    border: 1px solid var(--border); padding: 2.5rem 1.5rem;
}
.about-stats {
    display: flex; justify-content: space-around;
    align-items: center; flex-wrap: wrap; gap: 1rem;
}
.stat-item { text-align: center; }
.stat-number { font-size: 2.5rem; font-weight: 800; color: var(--primary); line-height: 1; }
.stat-label  { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; margin-top: 0.3rem; }
.stat-divider { width: 1px; height: 50px; background-color: var(--border); }

.about-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.about-tag {
    background-color: var(--bg-secondary); color: var(--text-primary);
    font-size: 0.85rem; font-weight: 500;
    padding: 0.4rem 0.9rem; border-radius: 30px; border: 1px solid var(--border-color);
    display: inline-flex; align-items: center; gap: 0.4rem;
}
.about-tag i { color: var(--primary); font-size: 0.8rem; }

/* ===== HABILIDADES ===== */
.skill-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 2rem; border: 2px solid var(--border-color); 
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.skill-card::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(13,110,253,0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.skill-card:hover {
    transform: translateY(-8px); 
    box-shadow: 0 12px 40px rgba(13,110,253,0.15); 
    border-color: var(--primary);
}
.skill-card:hover::before {
    opacity: 1;
}
.skill-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 56px; height: 56px;
    background: linear-gradient(135deg, #e8f3ff 0%, #f0f9ff 100%);
    border-radius: var(--radius-sm);
    font-size: 1.5rem; color: var(--primary);
    box-shadow: 0 4px 12px rgba(13,110,253,0.1);
}
.skill-card h5 { font-size: 1rem; color: var(--dark); margin-bottom: 0.5rem; }
.skill-items { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.8rem; }
.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.75rem; font-weight: 600;
    padding: 0.35rem 0.8rem; border-radius: 20px; 
    border: 1px solid var(--border-color);
    display: inline-flex; align-items: center; gap: 0.4rem;
    transition: var(--transition);
}
.skill-tag:hover {
    background-color: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.skill-tag i { 
    color: var(--primary);
    font-size: 0.75rem;
}
.skill-tag:hover i {
    color: #fff;
}

/* ===== PROYECTOS ===== */
.project-card {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden; transition: var(--transition); 
    border: 2px solid var(--border-color);
    display: flex; flex-direction: column;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.project-card:hover {
    transform: translateY(-10px); 
    box-shadow: 0 16px 48px rgba(13,110,253,0.18); 
    border-color: var(--primary);
}
.project-image {
    height: 180px; background-color: var(--bg-secondary);
    display: flex; align-items: center; justify-content: center;
    font-size: 4rem; border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary); overflow: hidden;
}
.project-image img { width: 100%; height: 100%; object-fit: cover; }
.project-image-icon { color: var(--primary); opacity: 0.6; }
.badge-proyecto-fin { background-color: #e8f3ff; color: var(--primary); font-size: 0.7rem; border: 1px solid #b6d4fe; }
.project-institucion { font-size: 0.78rem; }
.project-content { padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column; }
.project-content h5 { font-size: 1.05rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.6rem; }
.project-content p  { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; flex-grow: 1; margin-bottom: 1rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }
.project-tags .badge {
    font-size: 0.75rem; font-weight: 600; padding: 0.3rem 0.6rem; border-radius: 20px;
    background-color: var(--bg-primary) !important; color: var(--text-primary) !important; border: 1px solid var(--border-color);
}
.project-content .btn-sm {
    align-self: flex-start; font-weight: 600; font-size: 0.85rem;
    padding: 0.45rem 1.1rem; border-radius: var(--radius-sm);
}

/* ===== CONTACTO ===== */
.contact-card {
    display: flex; align-items: center; gap: 1rem;
    padding: 1.25rem 1.5rem;
    background-color: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius); text-decoration: none; color: var(--text-primary); transition: var(--transition);
}
.contact-card:hover {
    transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #b6d4fe; color: var(--text-primary);
}
.contact-card-icon {
    width: 48px; height: 48px; background-color: var(--bg-primary); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center; font-size: 1.4rem; flex-shrink: 0;
}
.contact-card-icon--email    { color: var(--primary); }
.contact-card-icon--linkedin { color: #0a66c2; }
.contact-card-icon--github   { color: var(--text-primary); }
.contact-card-text { display: flex; flex-direction: column; flex-grow: 1; gap: 0.1rem; }
.contact-card-text strong { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); }
.contact-card-text span   { font-size: 0.82rem; color: var(--text-secondary); }
.contact-card-arrow { color: var(--text-secondary); font-size: 0.8rem; }

/* ===== FOOTER ===== */
footer { background-color: var(--dark-soft) !important; }
.icon-available { color: #4ade80; }
.footer-brand { font-size: 1.15rem; font-weight: 700; color: var(--white); }
.footer-brand i { color: var(--primary); margin-right: 0.4rem; }
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; justify-content: flex-end; }
.footer-links a {
    color: #adb5bd; text-decoration: none; font-size: 0.85rem; font-weight: 500; transition: var(--transition);
}
.footer-links a:hover { color: var(--white); }

/* ===== BOTÓN FLOTANTE WHATSAPP ===== */
.whatsapp-float {
    position: fixed; bottom: 30px; right: 30px; z-index: 9999;
    width: 60px; height: 60px;
    background-color: #25d366; color: var(--white); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.85rem; text-decoration: none;
    box-shadow: 0 4px 18px rgba(37,211,102,0.45);
    transition: var(--transition);
    animation: pulse-wa 2.5s infinite;
}
.whatsapp-float:hover {
    background-color: #1ebe5d; color: var(--white);
    transform: scale(1.1); box-shadow: 0 6px 24px rgba(37,211,102,0.55);
    animation: none;
}
.whatsapp-tooltip {
    position: absolute; right: 72px;
    background-color: var(--dark); color: var(--white);
    font-size: 0.8rem; font-weight: 600;
    padding: 0.35rem 0.85rem; border-radius: var(--radius-sm);
    white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.25s ease;
}
.whatsapp-tooltip::after {
    content: ''; position: absolute; top: 50%; right: -6px;
    transform: translateY(-50%); border: 5px solid transparent; border-left-color: var(--dark);
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; }

@keyframes pulse-wa {
    0%   { box-shadow: 0 0 0 0 rgba(37,211,102,0.5); }
    70%  { box-shadow: 0 0 0 14px rgba(37,211,102,0); }
    100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}

/* ===== REVEAL ON SCROLL ===== */
.reveal {
    opacity: 0; transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--light-bg); }
::-webkit-scrollbar-thumb { background: #ced4da; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #adb5bd; }

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .hero-section { padding: 3rem 0 4rem; }
    .min-vh-85 { min-height: 0; }
    .footer-links { justify-content: flex-start; margin-top: 0.5rem; }
    .hero-avatar-wrapper { width: 240px; height: 240px; }
    .hero-avatar { width: 210px; height: 210px; font-size: 5.5rem; margin-top: 10px; }
}
@media (max-width: 767px) {
    .hero-title { font-size: 2rem; }
    .hero-lead { font-size: 1rem; }
    .stat-divider { display: none; }
    .about-stats { gap: 1.5rem; }
    .whatsapp-float { bottom: 20px; right: 20px; width: 54px; height: 54px; font-size: 1.6rem; }
    .whatsapp-tooltip { display: none; }
    .hero-avatar-wrapper { width: 200px; height: 200px; }
    .hero-avatar { width: 170px; height: 170px; font-size: 4.5rem; border-width: 6px; margin-top: 0; }
    .floating-badge { font-size: 0.7rem; padding: 0.45rem 0.9rem; }
    .badge-left { left: -10px; }
    .badge-right { right: -5px; }
}

/* ===== FORMACIÓN (Sobre mí) ===== */
.edu-section-title {
    letter-spacing: 1px;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.edu-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}
.edu-item {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 0.9rem 1.1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.edu-item:hover {
    border-color: #b6d4fe;
    box-shadow: var(--shadow-sm);
}
.edu-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    min-width: 38px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--primary);
    font-size: 0.95rem;
}
.edu-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    flex: 1;
    min-width: 0;
}
.edu-info-top {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.edu-info strong {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 700;
}
.edu-info span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.edu-period {
    font-size: 0.72rem !important;
    font-weight: 500;
    color: var(--text-secondary) !important;
    white-space: nowrap;
    flex-shrink: 0;
}
.edu-badge-activo {
    font-size: 0.68rem !important;
    font-weight: 700;
    color: #16a34a !important;
    background: #dcfce7;
    border: 1px solid #86efac;
    border-radius: 20px;
    padding: 0.1rem 0.55rem;
    white-space: nowrap;
    flex-shrink: 0;
}
html.dark-theme .edu-badge-activo {
    background: #052e16;
    border-color: #166534;
    color: #4ade80 !important;
}

/* ===== EXPERIENCIA (Timeline) ===== */
.exp-timeline {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.exp-item {
    display: flex;
    gap: 1.25rem;
}
.exp-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    padding-top: 0.35rem;
}
.exp-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--primary);
    flex-shrink: 0;
}
.exp-line {
    width: 2px;
    flex: 1;
    background: var(--border-color);
    min-height: 20px;
    margin-top: 6px;
}
.exp-item:last-child .exp-line { display: none; }
.exp-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.5rem;
    flex: 1;
    transition: var(--transition);
}
.exp-card:hover {
    border-color: #b6d4fe;
    box-shadow: var(--shadow-sm);
}
.exp-header {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.exp-logo {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--primary);
}
.exp-meta { flex: 1; min-width: 0; }
.exp-meta h5 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.15rem;
}
.exp-empresa {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    display: block;
    margin-bottom: 0.5rem;
}
.exp-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.exp-tag {
    font-size: 0.72rem;
    font-weight: 500;
    padding: 0.15rem 0.6rem;
    border-radius: 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    white-space: nowrap;
}
.exp-tag--activo {
    background: #dcfce7;
    border-color: #86efac;
    color: #16a34a;
    font-weight: 700;
}
html.dark-theme .exp-tag--activo {
    background: #052e16;
    border-color: #166534;
    color: #4ade80;
}
.exp-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 0.85rem;
}
.exp-logros {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.exp-logros li {
    font-size: 0.83rem;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}
.exp-logros li i {
    color: var(--primary);
    font-size: 0.75rem;
    margin-top: 0.18rem;
    flex-shrink: 0;
}
.exp-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
.exp-link:hover {
    color: var(--primary);
    text-decoration: underline;
    opacity: 0.8;
}
html.dark-theme .exp-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}
html.dark-theme .exp-logo { background: var(--bg-primary); }
html.dark-theme .exp-meta h5 { color: var(--text-primary); }
html.dark-theme .exp-desc { color: var(--text-secondary); }
html.dark-theme .exp-logros li { color: var(--text-secondary); }

/* ===== TARJETAS DE LOGROS ===== */
.logro-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.logro-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: #b6d4fe;
}
.logro-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logro-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    font-size: 1.3rem;
}
.logro-icon--blue  { background-color: #e8f3ff; color: var(--primary); }
.logro-icon--gold  { background-color: #fff8e1; color: #f59e0b; }
.logro-icon--green { background-color: #e6f9f0; color: #16a34a; }

.logro-year {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    background-color: var(--light-bg);
    border: 1px solid var(--border);
    padding: 0.25rem 0.7rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.logro-card h5 {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.4;
}
.logro-card p {
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--text-secondary);
    flex-grow: 1;
}
.logro-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1rem;
    background-color: #e8f3ff;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    border: 1px solid #b6d4fe;
    width: fit-content;
}
.logro-badge--gold  { background-color: #fff8e1; color: #b45309; border-color: #fde68a; }
.logro-badge--green { background-color: #e6f9f0; color: #15803d; border-color: #86efac; }
.logro-badge--hackathon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
}

/* ===== STAT BLOCK (Sobre mí — fila completa) ===== */
.stat-block {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.75rem 1rem;
    text-align: center;
    transition: var(--transition);
}
.stat-block:hover {
    border-color: #b6d4fe;
    box-shadow: var(--shadow-sm);
    transform: translateY(-4px);
}
.stat-block .stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}
.stat-block .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 0.4rem;
}

/* ===== HERO — nombre real + ubicación ===== */
.hero-badge--location {
    background-color: #f0fdf4;
    color: #16a34a;
    border-color: #86efac;
}
.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0;
}
.hero-alias {
    font-weight: 400;
    font-size: 1rem;
    color: var(--primary);
    opacity: 0.8;
}

/* ===== FOOTER DESARROLLADO ===== */

/* Franja de transición entre la última sección y el footer */
.footer-main {
    border-top: 3px solid var(--primary);
    background-color: #1e293b;
    color: #e2e8f0;
    margin-top: 0;
}

.footer-top {
    padding: 4rem 0 3rem;
    border-bottom: 1px solid #293548;
}

.footer-bottom {
    padding: 1.25rem 0;
    background-color: #172033;
    font-size: 0.85rem;
    color: #64748b;
}

.footer-bottom p { color: #7c8fa8; }
.footer-bottom strong { color: #cbd5e1; }

.footer-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: #f1f5f9;
    letter-spacing: -0.5px;
}
.footer-brand i { color: var(--primary); margin-right: 0.4rem; }

.footer-desc {
    font-size: 0.9rem;
    color: #94a3b8;
    line-height: 1.75;
    max-width: 320px;
}

/* Redes sociales */
.footer-social {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.25rem;
}
.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background-color: #293548;
    color: #94a3b8;
    border-radius: 8px;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid #374d66;
}
.footer-social a:hover {
    background-color: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
}

/* Headings columnas */
.footer-heading {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: #f1f5f9;
    margin-bottom: 1.1rem;
}

/* Lista de enlaces */
.footer-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}
.footer-list a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.88rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.footer-list a::before {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    background-color: var(--primary);
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition);
}
.footer-list a:hover { color: #f1f5f9; }
.footer-list a:hover::before { opacity: 1; }

/* Lista de contacto */
.footer-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}
.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    font-size: 0.88rem;
    color: #94a3b8;
}
.footer-contact-list li i {
    color: var(--primary);
    margin-top: 3px;
    min-width: 14px;
    font-size: 0.9rem;
}
.footer-contact-list a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}
.footer-contact-list a:hover { color: #f1f5f9; }

/* Volver arriba */
.footer-back-top {
    color: #94a3b8;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}
.footer-back-top:hover { color: var(--primary); }
.footer-back-top i { font-size: 0.75rem; }

/* Responsive */
@media (max-width: 767px) {
    .footer-top { padding: 3rem 0 2rem; }
    .footer-desc { max-width: 100%; }
    .footer-social { justify-content: flex-start; }
}

/* ===== TRANSICIÓN HACIA EL FOOTER ===== */
.footer-wave {
    background-color: var(--light-bg);
    padding: 2.5rem 0 0;
}
.footer-wave-inner {
    height: 40px;
    background-color: #1e293b;
    border-radius: 24px 24px 0 0;
}

/* ===== ICONO OMEGA ===== */
.brand-icon {
    font-family: 'Georgia', 'Times New Roman', serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
}
.footer-omega {
    font-family: 'Georgia', 'Times New Roman', serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    margin-right: 0.2rem;
}

/* ================================================================
   DARK THEME — overrides completos
   Cubre Bootstrap (bg-white, bg-light, text-muted, text-dark…)
   y todos los componentes con colores hardcodeados
   ================================================================ */

/* Fondo de secciones con bg-white / bg-light de Bootstrap */
html.dark-theme .bg-white,
html.dark-theme .stats-section {
    background-color: var(--bg-primary) !important;
}
html.dark-theme .bg-light,
html.dark-theme section.py-5.bg-light {
    background-color: var(--bg-secondary) !important;
}

/* Textos generales */
html.dark-theme .text-muted {
    color: var(--text-secondary) !important;
}
html.dark-theme h1, html.dark-theme h2, html.dark-theme h3,
html.dark-theme h4, html.dark-theme h5, html.dark-theme h6 {
    color: var(--text-primary);
}
html.dark-theme .fw-bold { color: var(--text-primary); }
html.dark-theme p        { color: var(--text-secondary); }
html.dark-theme strong   { color: var(--text-primary); }

/* Section tag */
html.dark-theme .section-tag {
    background-color: #1e3a5f;
    border-color: rgba(74,158,255,0.3);
    color: var(--primary);
}

/* Hero badge verde (ubicación) */
html.dark-theme .hero-badge--location {
    background-color: #0f2e1e;
    color: #4ade80;
    border-color: #16a34a60;
}

/* Tech pills */
html.dark-theme .tech-pill {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}
html.dark-theme .tech-pill:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
}

/* Avatar */
html.dark-theme .hero-avatar {
    background: linear-gradient(135deg, #1a2e4a 0%, #0f1f35 100%);
}

/* Floating badges */
html.dark-theme .floating-badge {
    background: var(--bg-secondary);
    border-color: var(--primary);
    color: var(--primary);
}

/* Stat block */
html.dark-theme .stat-block {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

/* About tags */
html.dark-theme .about-tag {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Edu items */
html.dark-theme .edu-item {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
}
html.dark-theme .edu-icon {
    background-color: #1e3a5f;
    color: var(--primary);
}
html.dark-theme .edu-info strong { color: var(--text-primary); }
html.dark-theme .edu-info span   { color: var(--text-secondary); }

/* Skill cards */
html.dark-theme .skill-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}
html.dark-theme .skill-icon {
    background: #1e3a5f;
    color: var(--primary);
}
html.dark-theme .skill-card h5 { color: var(--text-primary); }
html.dark-theme .skill-tag {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border-color);
}
html.dark-theme .skill-tag i { color: var(--primary); }

/* Logro cards */
html.dark-theme .logro-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}
html.dark-theme .logro-card h5    { color: var(--text-primary); }
html.dark-theme .logro-card p     { color: var(--text-secondary); }
html.dark-theme .logro-year {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
html.dark-theme .logro-icon--blue  { background-color: #1e3a5f; color: var(--primary); }
html.dark-theme .logro-icon--gold  { background-color: #2e2000; color: #fbbf24; }
html.dark-theme .logro-icon--green { background-color: #0a2e1a; color: #4ade80; }
html.dark-theme .logro-badge {
    background-color: #1e3a5f;
    border-color: rgba(74,158,255,0.3);
    color: var(--primary);
}
html.dark-theme .logro-badge--gold  { background-color: #2e2000; color: #fbbf24; border-color: #fbbf2440; }
html.dark-theme .logro-badge--green { background-color: #0a2e1a; color: #4ade80; border-color: #4ade8040; }

/* Project cards */
html.dark-theme .project-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}
html.dark-theme .project-image {
    background-color: var(--bg-primary);
    border-bottom-color: var(--border-color);
}
html.dark-theme .project-content h5  { color: var(--text-primary); }
html.dark-theme .project-content p   { color: var(--text-secondary); }
html.dark-theme .project-tags .badge,
html.dark-theme .badge.bg-light {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}
html.dark-theme .text-dark { color: var(--text-primary) !important; }

/* Proyecto fin de carrera badge */
html.dark-theme .badge-proyecto-fin {
    background-color: #1e3a5f !important;
    color: var(--primary) !important;
    border-color: rgba(74,158,255,0.3) !important;
}

/* Contact cards */
html.dark-theme .contact-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}
html.dark-theme .contact-card:hover { color: var(--text-primary); }
html.dark-theme .contact-card-icon  { background-color: var(--bg-primary); }
html.dark-theme .contact-card-text strong { color: var(--text-primary); }
html.dark-theme .contact-card-text span   { color: var(--text-secondary); }
html.dark-theme .contact-card-arrow       { color: var(--text-secondary); }

/* Footer wave */
html.dark-theme .footer-wave { background-color: var(--bg-secondary); }

/* Scrollbar */
html.dark-theme ::-webkit-scrollbar-track { background: var(--bg-secondary); }
html.dark-theme ::-webkit-scrollbar-thumb { background: #4a5568; }
html.dark-theme ::-webkit-scrollbar-thumb:hover { background: #718096; }

/* Botón outline en dark */
html.dark-theme .btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}
html.dark-theme .btn-outline-primary:hover {
    background-color: var(--primary);
    color: #fff;
}

/* ================================================================
   FOOTER — siempre usa su propio esquema oscuro (en ambos temas).
   Necesario porque las reglas genéricas dark-theme (p, h6, strong)
   tienen mayor especificidad y sobreescriben los colores del footer.
   ================================================================ */
.footer-main p,
.footer-main h1, .footer-main h2, .footer-main h3,
.footer-main h4, .footer-main h5, .footer-main h6,
.footer-main strong, .footer-main a {
    color: inherit;
}
html.dark-theme .footer-main          { background-color: #0c1220 !important; }
html.dark-theme .footer-bottom        { background-color: #080d18 !important; }
html.dark-theme .footer-wave-inner    { background-color: #0c1220 !important; }
html.dark-theme .footer-brand         { color: #f1f5f9 !important; }
html.dark-theme .footer-desc          { color: #94a3b8 !important; }
html.dark-theme .footer-heading       { color: #f1f5f9 !important; }
html.dark-theme .footer-list a        { color: #94a3b8 !important; }
html.dark-theme .footer-list a:hover  { color: #f1f5f9 !important; }
html.dark-theme .footer-contact-list li { color: #94a3b8 !important; }
html.dark-theme .footer-contact-list a  { color: #94a3b8 !important; }
html.dark-theme .footer-contact-list a:hover { color: #f1f5f9 !important; }
html.dark-theme .footer-bottom p      { color: #7c8fa8 !important; }
html.dark-theme .footer-bottom strong { color: #cbd5e1 !important; }
html.dark-theme .footer-back-top      { color: #94a3b8 !important; }
html.dark-theme .footer-back-top:hover { color: var(--primary) !important; }
html.dark-theme .footer-top           { border-bottom-color: #1e3048 !important; }
html.dark-theme .footer-main p        { color: #94a3b8 !important; }
html.dark-theme .footer-main h6       { color: #f1f5f9 !important; }
html.dark-theme .footer-main strong   { color: #cbd5e1 !important; }


/* ===== COOKIE BANNER ===== */
.cookie-banner {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 1055;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -4px 28px rgba(0,0,0,0.13);
    padding: 1rem 0;
    transform: translateY(110%);
    transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
    will-change: transform;
}
.cookie-banner.show { transform: translateY(0); }
.cookie-banner.hide { transform: translateY(110%); }
.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.cookie-text {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    flex: 1;
    min-width: 240px;
}
.cookie-icon {
    font-size: 1.5rem;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 0.05rem;
}
.cookie-text strong {
    display: block;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}
.cookie-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.55;
}
.cookie-actions {
    display: flex;
    gap: 0.6rem;
    flex-shrink: 0;
    flex-wrap: wrap;
}
.btn-cookie {
    padding: 0.5rem 1.2rem;
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1.4;
}
.btn-cookie-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-cookie-primary:hover {
    filter: brightness(1.1);
}
.btn-cookie-secondary {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border-color);
}
.btn-cookie-secondary:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
}
@media (max-width: 576px) {
    .cookie-content { flex-direction: column; gap: 1rem; }
    .cookie-actions { width: 100%; }
    .btn-cookie { flex: 1; text-align: center; }

    /* Experiencia — timeline compacto en móvil */
    .exp-timeline { gap: 0; }
    .exp-item { gap: 0.75rem; }
    .exp-marker { padding-top: 0.5rem; }
    .exp-dot { width: 11px; height: 11px; }
    .exp-card {
        padding: 1rem 1.1rem;
        margin-bottom: 1.25rem;
    }
    .exp-header {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    .exp-logo {
        width: 38px;
        height: 38px;
        min-width: 38px;
        font-size: 1rem;
    }
    .exp-meta h5 { font-size: 0.95rem; }
    .exp-empresa { font-size: 0.8rem; }
    .exp-tags { gap: 0.3rem; }
    .exp-tag {
        font-size: 0.68rem;
        padding: 0.12rem 0.5rem;
        white-space: normal;
    }
    .exp-desc { font-size: 0.84rem; }
    .exp-logros li { font-size: 0.8rem; }
}