/* =========================
   VARIABLES
========================= */
:root {
  --color-bg: #f8f8f6;
  --color-white: #ffffff;
  --color-text: #111111;
  --color-text-soft: #5f6368;
  --color-line: #dddddd;
  --color-primary: #4a6cf7;
  --color-primary-hover: #3b5ce0;

  --font-heading: "Sora", sans-serif;
  --font-body: "Inter", sans-serif;

  --container-max: 1200px;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;

  --radius-sm: 0.4rem;
  --radius-md: 0.75rem;
  --transition: all 0.25s ease;
}

/* =========================
   BASE
========================= */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  margin: 0;
  padding: 0;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: var(--container-max);
}

section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  max-width: 640px;
  margin: 0 auto;
  color: var(--color-text-soft);
  font-size: 1rem;
}

/* =========================
   NAVBAR
========================= */
.navbar {
  background-color: var(--color-bg);
  border-bottom: 1px solid rgba(17, 17, 17, 0.06);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.navbar-nav .nav-link {
  font-size: 0.95rem;
  color: var(--color-text);
  padding-left: 1rem !important;
  padding-right: 1rem !important;
  transition: var(--transition);
}

.navbar-nav .nav-link:hover {
  color: var(--color-primary);
}

.navbar-toggler {
  border: 0;
  padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* =========================
   BUTTONS
========================= */
.btn {
  font-family: var(--font-body);
  font-weight: 500;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.15rem;
  font-size: 0.95rem;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-dark {
  background-color: var(--color-text);
  border-color: var(--color-text);
}

.btn-dark:hover,
.btn-dark:focus {
  background-color: #000000;
  border-color: #000000;
}

.btn-outline-dark {
  border-color: rgba(17, 17, 17, 0.2);
  color: var(--color-text);
  background-color: transparent;
}

.btn-outline-dark:hover,
.btn-outline-dark:focus {
  background-color: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-white);
}

/* =========================
   HERO
========================= */
.hero {
  padding-top: 5rem;
  padding-bottom: 4rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.7rem, 6vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  font-weight: 700;
  margin-bottom: 0;
  max-width: 620px;
}

.hero-text {
  color: var(--color-text-soft);
  font-size: 1.05rem;
  max-width: 420px;
  margin-left: auto;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-left: auto;
}

/* =========================
   ACERCA DE
========================= */
.about {
  background-color: #dfeaf0;
  text-align: center;
}

.about .section-title {
  font-size: 0.9rem;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 1rem;
}

.about-text {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 2.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  max-width: 760px;
  margin: 0 auto;
}

.about a {
  font-size: 0.95rem;
  color: var(--color-text);
  transition: var(--transition);
}

.about a:hover {
  color: var(--color-primary);
}

/* =========================
   HABILIDADES
========================= */
.skill-card {
  height: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;

  background-color: var(--color-white);
  border: 1px solid rgba(17, 17, 17, 0.06);

  text-align: left;
  transition: var(--transition);
}

.skill-card:hover {
  transform: translateY(-4px);
}

/* Imagen superior */
.skill-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.skill-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Contenido */
.skill-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin: 1rem 1rem 0.5rem;
}

.skill-card p {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  margin: 0 1rem 1.5rem;
}

/* =========================
   PROYECTOS
========================= */
.projects .section-title,
.projects .section-subtitle {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}

.project-item {
  padding-top: 2rem;
  padding-bottom: 2rem;
  border-top: 1px solid rgba(17, 17, 17, 0.08);
}

.project-item:last-child {
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
}

.project-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.project-item h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.project-item p {
  color: var(--color-text-soft);
  max-width: 520px;
  margin-bottom: 1rem;
}

.tag {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  margin-right: 0.45rem;
  margin-bottom: 0.6rem;
  border: 1px solid rgba(17, 17, 17, 0.12);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.55);
}

.project-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
}

.project-link:hover {
  color: var(--color-primary);
}

/* =========================
   CONTACTO
========================= */
.contact {
  padding-top: 5rem;
}

.contact h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
}

.contact p {
  color: var(--color-text-soft);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.contact strong {
  color: var(--color-text);
}

/* =========================
   FOOTER
========================= */
.footer {
  border-top: 1px solid rgba(17, 17, 17, 0.08);
  background-color: var(--color-bg);
}

.footer p {
  margin-bottom: 0.35rem;
  font-size: 0.92rem;
  color: var(--color-text-soft);
}

.footer p:first-child {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 991.98px) {
  .navbar-collapse {
    margin-top: 1rem;
  }

  .navbar-nav {
    align-items: flex-start !important;
    gap: 0.25rem;
  }

  .hero {
    padding-top: 3.5rem;
    padding-bottom: 3rem;
  }

  .hero-title {
    margin-bottom: 1.5rem;
  }

  .hero-text {
    margin-left: 0;
    max-width: 100%;
  }

  .hero-buttons {
    margin-left: 0;
  }

  .projects .section-title,
  .projects .section-subtitle {
    text-align: left;
  }

  .project-item {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
  }

  .contact .col-lg-6:last-child {
    margin-top: 1.5rem;
  }
}

@media (max-width: 767.98px) {
  section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .navbar {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .hero-title {
    font-size: clamp(2.3rem, 10vw, 3.6rem);
  }

  .hero-text {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: row;
  }

  .about-text {
    font-size: 1.35rem;
  }

  .skill-card {
    padding-top: 0.75rem;
  }

  .project-image {
    min-height: 220px;
  }

  .contact h2 {
    max-width: 280px;
  }
}

@media (max-width: 575.98px) {
  body {
    font-size: 15.5px;
  }

  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  .project-image {
    min-height: 180px;
  }

  .tag {
    font-size: 0.78rem;
  }
}