/* ==========================================================================
   Portafolio Adrián Ardila — Sistema de diseño
   Paleta: azul marino + acento azul moderno sobre fondos claros
   Tipografía: Inter
   ========================================================================== */

:root {
    --pf-navy: #0e2a47;
    --pf-navy-deep: #0a1f36;
    --pf-accent: #2f6fed;
    --pf-accent-dark: #1f56c4;
    --pf-accent-soft: #e8effd;
    --pf-bg: #ffffff;
    --pf-bg-soft: #f5f7fb;
    --pf-text: #334155;
    --pf-heading: #0e2a47;
    --pf-muted: #64748b;
    --pf-border: #e2e8f0;
    --pf-radius: 1rem;
    --pf-radius-sm: 0.625rem;
    --pf-shadow-sm: 0 1px 2px rgba(14, 42, 71, 0.06);
    --pf-shadow-md: 0 10px 30px -12px rgba(14, 42, 71, 0.18);
    --pf-transition: 180ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    color: var(--pf-text);
    background-color: var(--pf-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--pf-heading);
    font-weight: 700;
    line-height: 1.25;
}

img {
    max-width: 100%;
}

::selection {
    background: var(--pf-accent);
    color: #fff;
}

/* Foco visible para navegación por teclado */
a:focus-visible,
button:focus-visible,
.form-control:focus-visible {
    outline: 3px solid rgba(47, 111, 237, 0.45);
    outline-offset: 2px;
    border-radius: 4px;
}

/* --------------------------------------------------------------------------
   Barra de navegación
   -------------------------------------------------------------------------- */
.pf-navbar {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: box-shadow var(--pf-transition), border-color var(--pf-transition);
}

.pf-navbar.pf-navbar-scrolled {
    border-bottom-color: var(--pf-border);
    box-shadow: var(--pf-shadow-sm);
}

.pf-navbar .navbar-brand {
    font-weight: 800;
    color: var(--pf-navy);
    letter-spacing: -0.02em;
}

.pf-navbar .navbar-brand span {
    color: var(--pf-accent);
}

.pf-nav-link {
    position: relative;
    display: block;
    padding: 0.5rem 0.9rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--pf-text);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: color var(--pf-transition), background-color var(--pf-transition);
}

.pf-nav-link:hover {
    color: var(--pf-accent);
    background: var(--pf-accent-soft);
}

.pf-nav-link.active {
    color: var(--pf-accent);
}

.pf-nav-link.active::after {
    content: '';
    position: absolute;
    left: 0.9rem;
    right: 0.9rem;
    bottom: 0.15rem;
    height: 2px;
    border-radius: 2px;
    background: var(--pf-accent);
}

.pf-navbar .navbar-toggler {
    border-color: var(--pf-border);
}

.pf-navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.35);
}

/* Compensar la altura de la barra fija */
.pf-page {
    padding-top: 4.5rem;
}

/* --------------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------------- */
.pf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.6rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform var(--pf-transition), box-shadow var(--pf-transition),
        background-color var(--pf-transition), color var(--pf-transition),
        border-color var(--pf-transition);
}

.pf-btn-primary {
    background: var(--pf-accent);
    color: #fff;
}

.pf-btn-primary:hover,
.pf-btn-primary:focus-visible {
    background: var(--pf-accent-dark);
    color: #fff;
    box-shadow: var(--pf-shadow-md);
    transform: translateY(-1px);
}

.pf-btn-outline {
    border-color: var(--pf-border);
    color: var(--pf-navy);
    background: #fff;
}

.pf-btn-outline:hover,
.pf-btn-outline:focus-visible {
    border-color: var(--pf-accent);
    color: var(--pf-accent);
    background: var(--pf-accent-soft);
}

.pf-btn-light {
    background: #fff;
    color: var(--pf-navy);
}

.pf-btn-light:hover {
    background: var(--pf-accent-soft);
    color: var(--pf-accent-dark);
}

.pf-btn-ghost-light {
    border-color: rgba(255, 255, 255, 0.55);
    color: #fff;
    background: transparent;
}

.pf-btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-color: #fff;
}

/* --------------------------------------------------------------------------
   Secciones y utilidades tipográficas
   -------------------------------------------------------------------------- */
.pf-section {
    padding: 5rem 0;
}

.pf-section-soft {
    background: var(--pf-bg-soft);
}

.pf-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--pf-accent);
    margin-bottom: 0.75rem;
}

.pf-section-title {
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.pf-section-subtitle {
    color: var(--pf-muted);
    max-width: 46rem;
    margin: 0 auto;
}

.pf-lead {
    color: var(--pf-muted);
    font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.pf-hero {
    position: relative;
    padding: 5.5rem 0 5rem;
    background:
        radial-gradient(42rem 22rem at 88% -10%, rgba(47, 111, 237, 0.10), transparent 60%),
        radial-gradient(30rem 18rem at -10% 110%, rgba(14, 42, 71, 0.07), transparent 60%),
        var(--pf-bg);
    overflow: hidden;
}

.pf-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.95rem;
    border-radius: 999px;
    background: var(--pf-accent-soft);
    color: var(--pf-accent-dark);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.pf-hero-title {
    font-size: clamp(2.1rem, 4.6vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1.1rem;
}

.pf-hero-title .pf-accent-text {
    color: var(--pf-accent);
}

.pf-hero-subtitle {
    font-size: 1.1rem;
    color: var(--pf-muted);
    max-width: 34rem;
    margin-bottom: 2rem;
}

.pf-hero-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 2rem;
}

.pf-social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.75rem;
    border: 1px solid var(--pf-border);
    background: #fff;
    color: var(--pf-navy);
    font-size: 1.15rem;
    text-decoration: none;
    transition: var(--pf-transition);
}

.pf-social-btn:hover {
    color: var(--pf-accent);
    border-color: var(--pf-accent);
    transform: translateY(-2px);
    box-shadow: var(--pf-shadow-md);
}

.pf-hero-photo-wrap {
    position: relative;
    max-width: 24rem;
    margin: 0 auto;
}

.pf-hero-photo-bg {
    position: absolute;
    inset: 8% -4% -4% 8%;
    border-radius: 1.5rem;
    background: linear-gradient(160deg, var(--pf-navy) 0%, #16406e 55%, var(--pf-accent) 130%);
}

.pf-hero-photo {
    position: relative;
    display: block;
    width: 100%;
    height: auto;
    border-radius: 1.5rem;
    object-fit: cover;
    box-shadow: var(--pf-shadow-md);
}

/* --------------------------------------------------------------------------
   Tarjetas genéricas
   -------------------------------------------------------------------------- */
.pf-card {
    background: #fff;
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    box-shadow: var(--pf-shadow-sm);
    transition: transform var(--pf-transition), box-shadow var(--pf-transition),
        border-color var(--pf-transition);
}

.pf-card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--pf-shadow-md);
    border-color: #c9d8f2;
}

/* --------------------------------------------------------------------------
   Tarjetas de proyectos
   -------------------------------------------------------------------------- */
.pf-project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    box-shadow: var(--pf-shadow-sm);
    transition: transform var(--pf-transition), box-shadow var(--pf-transition),
        border-color var(--pf-transition);
}

.pf-project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--pf-shadow-md);
    border-color: #c9d8f2;
}

.pf-project-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--pf-bg-soft);
    border-bottom: 1px solid var(--pf-border);
}

.pf-project-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 400ms ease;
}

.pf-project-card:hover .pf-project-media img {
    transform: scale(1.03);
}

.pf-project-kind {
    position: absolute;
    top: 0.9rem;
    left: 0.9rem;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    background: rgba(14, 42, 71, 0.85);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    backdrop-filter: blur(4px);
}

.pf-project-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.5rem;
}

.pf-project-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pf-project-text {
    color: var(--pf-muted);
    font-size: 0.92rem;
    margin-bottom: 1rem;
}

.pf-project-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--pf-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

/* Proyecto destacado (formato horizontal) */
.pf-project-featured {
    display: grid;
    grid-template-columns: 1fr;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--pf-border);
    border-radius: var(--pf-radius);
    box-shadow: var(--pf-shadow-sm);
    transition: transform var(--pf-transition), box-shadow var(--pf-transition),
        border-color var(--pf-transition);
}

.pf-project-featured:hover {
    transform: translateY(-4px);
    box-shadow: var(--pf-shadow-md);
    border-color: #c9d8f2;
}

@media (min-width: 992px) {
    .pf-project-featured {
        grid-template-columns: 7fr 6fr;
        align-items: stretch;
    }
}

.pf-project-featured .pf-project-media {
    aspect-ratio: auto;
    min-height: 16rem;
    border-bottom: 0;
    border-right: 1px solid var(--pf-border);
}

.pf-project-featured .pf-project-media img {
    position: absolute;
    inset: 0;
}

.pf-project-featured .pf-project-body {
    padding: 2rem;
}

.pf-featured-flag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--pf-accent-dark);
    background: var(--pf-accent-soft);
    border-radius: 999px;
    padding: 0.25rem 0.7rem;
    margin-bottom: 0.9rem;
}

/* Etiquetas de tecnologías */
.pf-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.22rem 0.7rem;
    border-radius: 999px;
    background: var(--pf-bg-soft);
    border: 1px solid var(--pf-border);
    color: var(--pf-text);
    font-size: 0.78rem;
    font-weight: 600;
    max-width: 100%;
    text-align: left;
}

.pf-tag i {
    color: var(--pf-accent);
    font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   Línea de tiempo (experiencia)
   -------------------------------------------------------------------------- */
.pf-timeline {
    position: relative;
    margin: 0;
    padding-left: 1.75rem;
    list-style: none;
}

.pf-timeline::before {
    content: '';
    position: absolute;
    left: 0.45rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: var(--pf-border);
}

.pf-timeline-item {
    position: relative;
    padding-bottom: 2.25rem;
}

.pf-timeline-item:last-child {
    padding-bottom: 0;
}

.pf-timeline-item::before {
    content: '';
    position: absolute;
    left: -1.75rem;
    top: 0.4rem;
    width: 0.95rem;
    height: 0.95rem;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--pf-accent);
    box-shadow: 0 0 0 4px var(--pf-accent-soft);
}

.pf-timeline-date {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--pf-accent-dark);
    background: var(--pf-accent-soft);
    border-radius: 999px;
    padding: 0.2rem 0.75rem;
    margin-bottom: 0.6rem;
}

.pf-timeline-role {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--pf-heading);
    margin-bottom: 0.15rem;
}

.pf-timeline-company {
    font-weight: 600;
    color: var(--pf-text);
}

.pf-timeline-location {
    font-size: 0.85rem;
    color: var(--pf-muted);
}

.pf-timeline-desc {
    margin-top: 0.6rem;
    color: var(--pf-muted);
    font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   Competencias
   -------------------------------------------------------------------------- */
.pf-skill-card {
    height: 100%;
    padding: 1.6rem;
}

.pf-skill-card h3 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.02rem;
    margin-bottom: 1rem;
}

.pf-skill-card h3 i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.1rem;
    height: 2.1rem;
    border-radius: 0.6rem;
    background: var(--pf-accent-soft);
    color: var(--pf-accent);
    font-size: 1rem;
}

.pf-skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

/* --------------------------------------------------------------------------
   Mockup de teléfono (proyecto móvil)
   -------------------------------------------------------------------------- */
.pf-phone {
    position: relative;
    width: min(15.5rem, 70vw);
    aspect-ratio: 9 / 18.5;
    margin: 0 auto;
    border-radius: 2.2rem;
    border: 0.55rem solid var(--pf-navy-deep);
    background: var(--pf-bg-soft);
    box-shadow: var(--pf-shadow-md);
    overflow: hidden;
}

.pf-phone::before {
    content: '';
    position: absolute;
    top: 0.55rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 1.1rem;
    border-radius: 999px;
    background: var(--pf-navy-deep);
    z-index: 2;
}

.pf-phone img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pf-phone-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    text-align: center;
    padding: 1.5rem;
    color: var(--pf-muted);
    font-size: 0.85rem;
}

.pf-phone-placeholder i {
    font-size: 2rem;
    color: var(--pf-accent);
}

/* --------------------------------------------------------------------------
   Contacto
   -------------------------------------------------------------------------- */
.pf-contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    text-decoration: none;
    color: inherit;
}

.pf-contact-item i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 0.75rem;
    background: var(--pf-accent-soft);
    color: var(--pf-accent);
    font-size: 1.15rem;
}

.pf-contact-item .pf-contact-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pf-muted);
}

.pf-contact-item .pf-contact-value {
    font-weight: 600;
    color: var(--pf-heading);
    word-break: break-word;
}

a.pf-contact-item:hover {
    border-color: var(--pf-accent);
    transform: translateY(-2px);
    box-shadow: var(--pf-shadow-md);
}

.pf-form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--pf-heading);
    margin-bottom: 0.35rem;
}

.pf-form .form-control {
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    border-color: var(--pf-border);
    font-size: 0.95rem;
}

.pf-form .form-control:focus {
    border-color: var(--pf-accent);
    box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.18);
}

/* --------------------------------------------------------------------------
   CTA final
   -------------------------------------------------------------------------- */
.pf-cta {
    background: linear-gradient(150deg, var(--pf-navy-deep) 0%, var(--pf-navy) 55%, #16406e 100%);
    color: #fff;
    border-radius: var(--pf-radius);
    padding: 3.5rem 2rem;
    text-align: center;
}

.pf-cta h2 {
    color: #fff;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.pf-cta p {
    color: rgba(255, 255, 255, 0.75);
    max-width: 36rem;
    margin: 0 auto 1.75rem;
}

/* --------------------------------------------------------------------------
   Pie de página
   -------------------------------------------------------------------------- */
.pf-footer {
    background: var(--pf-navy-deep);
    color: rgba(255, 255, 255, 0.72);
    padding: 2.5rem 0;
    font-size: 0.9rem;
}

.pf-footer a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color var(--pf-transition);
}

.pf-footer a:hover {
    color: #fff;
}

.pf-footer .pf-social-btn {
    background: rgba(255, 255, 255, 0.08);
    border-color: transparent;
    color: #fff;
}

.pf-footer .pf-social-btn:hover {
    background: var(--pf-accent);
    border-color: var(--accent, var(--pf-accent));
}

/* --------------------------------------------------------------------------
   Animaciones de entrada (respetando prefers-reduced-motion)
   -------------------------------------------------------------------------- */
.pf-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 500ms ease, transform 500ms ease;
}

.pf-reveal.pf-revealed {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .pf-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .pf-project-card,
    .pf-project-featured,
    .pf-card,
    .pf-btn,
    .pf-social-btn,
    .pf-project-media img {
        transition: none;
    }
}

/* --------------------------------------------------------------------------
   Ajustes responsive
   -------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .pf-navbar .navbar-collapse {
        background: #fff;
        border: 1px solid var(--pf-border);
        border-radius: var(--pf-radius-sm);
        padding: 0.75rem;
        margin-top: 0.75rem;
        box-shadow: var(--pf-shadow-md);
    }

    .pf-nav-link.active::after {
        display: none;
    }

    .pf-nav-link.active {
        background: var(--pf-accent-soft);
    }

    .pf-hero {
        padding: 3.5rem 0 3.5rem;
        text-align: center;
    }

    .pf-hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .pf-hero .pf-btn-row,
    .pf-hero-social {
        justify-content: center;
    }

    .pf-hero-photo-wrap {
        max-width: 19rem;
        margin-top: 2.5rem;
    }
}

@media (max-width: 575.98px) {
    .pf-section {
        padding: 3.5rem 0;
    }

    .pf-project-featured .pf-project-body {
        padding: 1.5rem;
    }

    .pf-cta {
        padding: 2.5rem 1.25rem;
    }
}