/* ─── Variables ─────────────────────────────────────────────
   Toda la paleta vive aquí. Los tokens *-rgb son canales sueltos para
   poder usar transparencias: rgb(var(--accent-rgb) / 0.2)            */
:root {
  color-scheme: light;

  /* Fondos: beis (base) + lavanda lavado (secciones alternas) */
  --bg-rgb:        209 189 153;
  --bg:            #d1bd99;
  --bg-alt-rgb:    58 47 85;
  --bg-alt:        #3a2f55;
  --strong:        var(--bg-alt);       /* negritas: morado sobre beis */
  --on-accent:     #ffffff;
  --surface:       rgb(255 255 255 / 0.55);
  --surface-alt:   rgb(255 255 255 / 0.35);
  --chip-bg:       rgb(255 255 255 / 0.55);
  --field-bg:      rgb(255 255 255 / 0.65);
  --field-bg-focus:#ffffff;
  --card-back:     linear-gradient(145deg, #f6f1fc, var(--accent-soft));

  /* Texto */
  --ink-rgb:       42 33 56;
  --text:          #2a2138;
  --muted:         #4d4461;

  /* Acento (morado) */
  --accent-rgb:    84 58 152;
  --accent:        #543a98;
  --accent-deep:   #4a3088;
  --accent-light:  #9a7fd6;
  --accent-soft:   #ddd2f5;

  /* Secundario (ocre, oscuro para que se lea sobre fondo claro) */
  --gold-rgb:      100 63 6;
  --gold:          #643f06;
  --gold-light:    #c48a2c;

  /* Estados / marcas */
  --success-rgb:   47 122 68;
  --success:       #2f7a44;
  --danger-rgb:    179 55 47;
  --danger:        #b3372f;
  --linkedin-rgb:  8 74 140;
  --linkedin:      #084a8c;

  /* Terminal (se mantiene oscura como contraste) */
  --term-bg:       #1f1833;
  --term-bar:      #2d2d2d;
  --term-text:     #cfc7e2;
  --term-accent:   #b8a1e8;
  --term-green:    #7ec88a;

  /* Bordes, sombras, formas */
  --border:        rgb(var(--accent-rgb) / 0.20);
  --border-strong: rgb(var(--accent-rgb) / 0.40);
  --shadow:        0 20px 48px rgb(var(--ink-rgb) / 0.10);
  --shadow-hover:  0 28px 60px rgb(var(--ink-rgb) / 0.18);
  --radius:        24px;
  --radius-sm:     14px;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
}

/* ─── Superficies moradas ────────────────────────────────────
   Todo lo que va sobre --bg-alt redefine los tokens de texto y de
   acento en versión clara; las reglas de abajo no cambian.         */
.section-alt,
.site-header,
.site-footer {
  --text:          #f4effb;
  --muted:         #d3cbe8;
  --strong:        var(--bg);           /* negritas: beis sobre morado */
  --on-accent:     #2a2138;
  --ink-rgb:       255 255 255;
  --accent-rgb:    198 182 238;
  --accent:        #c6b6ee;
  --accent-deep:   #e2d9f7;
  --gold-rgb:      227 191 130;
  --gold:          #e3bf82;
  --success-rgb:   126 200 138;
  --success:       #7ec88a;
  --danger-rgb:    240 149 143;
  --danger:        #f0958f;
  --linkedin-rgb:  143 193 245;
  --linkedin:      #8fc1f5;
  --border:        rgb(var(--accent-rgb) / 0.22);
  --border-strong: rgb(var(--accent-rgb) / 0.42);
  --surface:       rgb(255 255 255 / 0.07);
  --surface-alt:   rgb(255 255 255 / 0.04);
  --chip-bg:       rgb(255 255 255 / 0.09);
  --field-bg:      rgb(255 255 255 / 0.08);
  --field-bg-focus:rgb(255 255 255 / 0.14);
  --card-back:     linear-gradient(145deg, rgb(255 255 255 / 0.15), rgb(255 255 255 / 0.08));
  color: var(--text);
}

/* ─── Reset & base ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html  { scroll-behavior: smooth; }
body  {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text);
  background: var(--bg);
}
img, svg   { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }
a  { color: inherit; text-decoration: none; }
p  { margin: 0; }

/* ─── Layout ────────────────────────────────────────────── */
.container {
  width: min(1160px, calc(100% - 2.5rem));
  margin: 0 auto;
}
.section { padding: clamp(4.5rem, 7vw, 8rem) 0; }
.section-alt { background: var(--bg-alt); }
.section-tint { background: rgb(var(--bg-alt-rgb) / 0.12); }

/* ─── Typography helpers ─────────────────────────────────── */
.code-label {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 0.82rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
}

.section-heading { max-width: 700px; margin-bottom: 3rem; }
.section-heading h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--strong);
}
.section-desc { color: var(--muted); margin-top: 0.5rem; }

/* ─── Header ────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgb(var(--bg-alt-rgb) / 0.92);
  border-bottom: 1px solid var(--border-strong);
  box-shadow: 0 6px 20px rgb(0 0 0 / 0.25);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}
.brand { display: flex; align-items: center; gap: 0.85rem; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-deep) 100%);
  color: var(--on-accent);
  font-size: 0.95rem;
  font-weight: 800;
  flex-shrink: 0;
}
.brand-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.06em;
  margin: 0;
}
.brand-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--strong);
  margin: 0;
  line-height: 1;
}
.main-nav { display: flex; flex-wrap: wrap; gap: 1.4rem; }
.main-nav a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.main-nav a:hover { color: var(--text); }

/* ─── Buttons ────────────────────────────────────────────── */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.8rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.button:hover { transform: translateY(-2px); }
.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
.button-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: var(--on-accent);
  box-shadow: 0 4px 18px rgb(var(--accent-rgb) / 0.30);
}
.button-primary:hover { box-shadow: 0 8px 26px rgb(var(--accent-rgb) / 0.42); }
.button-secondary {
  background: rgb(var(--accent-rgb) / 0.06);
  color: var(--text);
  border-color: var(--border-strong);
}
.button-secondary:hover { background: rgb(var(--accent-rgb) / 0.12); }
.button-social {
  background: rgb(var(--ink-rgb) / 0.04);
  color: var(--text);
  border-color: rgb(var(--ink-rgb) / 0.14);
}
.button-social:hover { background: rgb(var(--ink-rgb) / 0.09); }
.button-linkedin {
  background: rgb(var(--linkedin-rgb) / 0.08);
  border-color: rgb(var(--linkedin-rgb) / 0.30);
  color: var(--linkedin);
}
.button-linkedin:hover { background: rgb(var(--linkedin-rgb) / 0.16); }
.button-cv {
  background: rgb(var(--gold-rgb) / 0.08);
  color: var(--gold);
  border-color: rgb(var(--gold-rgb) / 0.30);
}
.button-cv:hover { background: rgb(var(--gold-rgb) / 0.16); }

/* ─── Chips / badges ─────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--chip-bg);
  border: 1px solid rgb(var(--accent-rgb) / 0.30);
  color: var(--accent-deep);
  white-space: nowrap;
}
/* ─── Hero ───────────────────────────────────────────────── */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 420px);
  gap: 3rem;
  align-items: center;
}
.hero-copy { max-width: 600px; }
.hero-title {
  font-size: clamp(3.5rem, 7vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 0.3rem;
  color: var(--strong);
}
.hero-role {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0 0 1.4rem;
  letter-spacing: 0.01em;
}
.hero-text {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 1.8rem;
  max-width: 520px;
}
.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.hero-actions .button { min-width: 140px; }

/* ─── Hero photo ─────────────────────────────────────────── */
.hero-photo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  justify-self: center;
}

/* Foto rectangular, con un bloque morado desplazado detrás */
.photo-ring {
  --photo-offset: 14px;
  position: relative;
  width: min(280px, calc(100% - var(--photo-offset)));
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  margin: 0 var(--photo-offset) var(--photo-offset) 0;
  flex-shrink: 0;
}
.photo-ring::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--bg-alt);
  transform: translate(var(--photo-offset), var(--photo-offset));
}
.photo-frame {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  overflow: hidden;
  z-index: 1;
}
.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 47% top;
  display: block;
}
.photo-status {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.83rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  backdrop-filter: blur(8px);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
  animation: pulse-green 2.5s ease-in-out infinite;
}
@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 0 0 rgb(var(--success-rgb) / 0.40); }
  50%       { box-shadow: 0 0 0 6px rgb(var(--success-rgb) / 0); }
}

/* ─── Terminal card ──────────────────────────────────────── */
.terminal-card {
  background: var(--term-bg);
  border: 1px solid rgb(255 255 255 / 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--term-bar);
  border-bottom: 1px solid rgb(0 0 0 / 0.4);
}
.terminal-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--term-text);
  letter-spacing: 0.02em;
}
.t-linux-btns {
  display: flex;
  gap: 0.3rem;
}
.t-linux-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  font-size: 0.65rem;
  color: var(--term-text);
  background: rgb(255 255 255 / 0.06);
  border: 1px solid rgb(255 255 255 / 0.10);
  cursor: default;
  user-select: none;
  line-height: 1;
}
.t-linux-close {
  color: #e06c6c;
  border-color: rgb(224 108 108 / 0.30);
  background: rgb(224 108 108 / 0.08);
}
.terminal-body {
  padding: 1.4rem 1.6rem 1.6rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 2;
}
.terminal-body p { margin: 0; }
.prompt {
  color: var(--term-accent);
  margin-right: 0.5rem;
  user-select: none;
}
.t-out { color: var(--term-text); padding-left: 1.1rem; margin-bottom: 0.2rem; }
.t-green { color: var(--term-green); }
.t-cursor {
  color: var(--term-accent);
  animation: blink 1.1s step-end infinite;
  padding-left: 1.1rem;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ─── Terminal compact variant ───────────────────────────── */
.terminal-sm .terminal-body {
  padding: 1rem 1.4rem 1.2rem;
  font-size: 0.79rem;
  line-height: 1.85;
}
.terminal-card {
  margin-bottom: 1.2rem;
}

/* ─── About ──────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: start;
}
.bio-text {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 1.2rem;
}
.bio-text strong { color: var(--strong); }
.soft-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }

/* Education card */
.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  margin-bottom: 1.2rem;
}
.edu-card-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
}
.edu-item { margin-bottom: 0.3rem; }
.edu-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}
.edu-degree {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--strong);
  margin: 0 0 0.2rem;
}
.edu-school {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0;
}
.edu-sep {
  height: 1px;
  background: var(--border);
  margin: 1rem 0;
}

/* Stats */
.stat-pills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.stat-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 0.75rem;
  text-align: center;
}
.stat-num {
  display: block;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--strong);
  line-height: 1;
  margin-bottom: 0.3rem;
}
.stat-label { font-size: 0.75rem; color: var(--muted); }

/* ─── Stack ──────────────────────────────────────────────── */
.stack-primary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}
.stack-tile {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.stack-tile h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--strong);
}
.stack-tile p { font-size: 0.88rem; line-height: 1.6; color: var(--muted); }
.stack-tile .stack-used {
  margin-top: auto;
  padding-top: 0.6rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--gold);
}
.stack-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 2.5rem 0 1rem;
}
.stack-cat-text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 1rem;
}
.section-intro {
  max-width: 640px;
  color: var(--muted);
  line-height: 1.8;
  margin-top: 0.75rem;
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.stack-cat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
}
.stack-cat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.chip-row { display: flex; flex-wrap: wrap; gap: 0.45rem; }

/* ─── Flip cards ─────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.project-card {
  perspective: 1200px;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}
.card-inner {
  position: relative;
  width: 100%;
  height: 390px;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.project-card.flipped .card-inner { transform: rotateY(180deg); }

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.card-front {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.project-card:not(.flipped):hover .card-front {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}
.card-back {
  transform: rotateY(180deg);
  background: var(--card-back);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
}

/* Card content */
.project-tag {
  align-self: flex-start;
  margin-bottom: 0.8rem;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-front h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 0.1rem;
  color: var(--strong);
}
.project-subtitle {
  font-size: 0.82rem;
  color: var(--gold);
  margin: 0 0 0.8rem;
  font-weight: 500;
}
.card-front p:not(.project-subtitle) {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  flex: 1;
}
.card-front-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.8rem 0;
}
.project-toggle {
  margin-top: auto;
  align-self: flex-start;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgb(var(--accent-rgb) / 0.08);
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s, border-color 0.2s;
  font-size: 0.85rem;
  font-weight: 500;
}
.project-toggle:hover {
  background: rgb(var(--accent-rgb) / 0.16);
  transform: translateY(-1px);
  border-color: var(--accent);
}
.project-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

/* Card back content */
.card-back h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0.4rem 0 0.8rem;
  color: var(--strong);
  line-height: 1.4;
}
.project-detail-list {
  margin: 0 0 0.5rem;
  padding-left: 1.1rem;
  list-style: none;
  flex: 1;
}
.project-detail-list li {
  position: relative;
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.65;
  margin-bottom: 0.65rem;
}
.project-detail-list li::before {
  content: "▹";
  position: absolute;
  left: -1.1rem;
  color: var(--accent);
  font-size: 0.75rem;
  top: 0.1rem;
}
.project-back-btn {
  margin-top: auto;
  align-self: flex-start;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  border: 1px solid rgb(var(--gold-rgb) / 0.32);
  background: rgb(var(--gold-rgb) / 0.08);
  color: var(--gold);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  font-size: 0.85rem;
  font-weight: 500;
}
.project-back-btn:hover { background: rgb(var(--gold-rgb) / 0.16); transform: translateY(-1px); }
.project-back-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }

/* ─── Tarjeta destacada (SIMA) ───────────────────────────────
   Las dos caras se apilan en la misma celda de la rejilla, así la
   altura la marca la más alta y no hay contenido recortado.        */
.project-featured { grid-column: 1 / -1; }
.project-featured .card-inner { display: grid; height: auto; }
.project-featured .card-front,
.project-featured .card-back {
  position: relative;
  inset: auto;
  grid-area: 1 / 1;
}
.project-featured .card-front {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 1.5rem;
}
.project-featured .card-back { padding: 2rem; gap: 1rem; }

.project-info { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; }
.project-info .project-tag { margin-bottom: 0.6rem; }
.project-info h3 { font-size: 1.9rem; margin-bottom: 0.15rem; }
.project-info .project-lead {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0.9rem;
}
.project-key-list { margin: 0 0 1rem; padding: 0; list-style: none; }
.project-key-list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.5rem;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--muted);
}
.project-key-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-size: 0.75rem;
  color: var(--accent);
}
.project-info .card-front-stack { margin: 0 0 1.2rem; }
.project-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: auto; }
.project-info .project-actions { margin-top: 0; }
.project-actions .button { padding: 0.75rem 1.4rem; font-size: 0.9rem; }
.project-actions .project-toggle,
.project-actions .project-back-btn { margin-top: 0; align-self: auto; }
.project-actions .project-toggle {
  padding: 0.75rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: rgb(var(--accent-rgb) / 0.06);
}
.project-actions .project-back-btn { padding: 0.75rem 1.4rem; font-size: 0.9rem; font-weight: 600; }

.project-featured .card-back h3 { font-size: 1.4rem; margin: 0.2rem 0 0.4rem; }
.project-back-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-bottom: 1.25rem;
}
.project-back-grid h4 {
  margin: 0 0 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}
.project-back-grid p { font-size: 0.92rem; line-height: 1.75; color: var(--muted); }

/* ─── Carrusel ───────────────────────────────────────────── */
.carousel {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: rgb(var(--ink-rgb) / 0.08);
  min-width: 0;
}
.carousel-track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  aspect-ratio: 1700 / 1227;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-slide { flex: 0 0 100%; margin: 0; scroll-snap-align: center; }
.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgb(var(--bg-alt-rgb) / 0.85);
  color: var(--bg);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.carousel-btn:hover { background: var(--bg-alt); transform: translateY(-50%) scale(1.08); }
.carousel-btn:focus-visible,
.carousel-dot:focus-visible { outline: 2px solid var(--bg); outline-offset: 2px; }
.carousel-prev { left: 0.75rem; }
.carousel-next { right: 0.75rem; }
.carousel-dots {
  position: absolute;
  left: 50%;
  bottom: 0.75rem;
  transform: translateX(-50%);
  display: flex;
  gap: 0.15rem;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  background: rgb(var(--bg-alt-rgb) / 0.8);
}
.carousel-dot {
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.carousel-dot::before {
  content: "";
  display: block;
  width: 8px;
  height: 8px;
  margin: auto;
  border-radius: 50%;
  background: rgb(255 255 255 / 0.45);
  transition: background 0.2s, transform 0.2s;
}
.carousel-dot[aria-current="true"]::before { background: var(--bg); transform: scale(1.35); }

/* ─── Certificados ───────────────────────────────────────── */
.certs-layout {
  display: grid;
  grid-template-columns: minmax(0, 400px) minmax(0, 460px);
  gap: 2rem;
  align-items: start;
}
.carousel-certs .carousel-track { aspect-ratio: 1400 / 990; }
.carousel-certs .carousel-dots {
  position: static;
  transform: none;
  width: max-content;
  margin: 0.6rem auto;
}
.carousel-certs .carousel-btn {
  top: calc(50% - 1.2rem);
  width: 32px;
  height: 32px;
  font-size: 0.95rem;
}
.carousel-certs .carousel-prev { left: 0.5rem; }
.carousel-certs .carousel-next { right: 0.5rem; }
.carousel-certs .carousel-slide a { display: block; height: 100%; }
.carousel-certs .carousel-slide img {
  object-fit: contain;
  object-position: center;
  background: #fff;
}
.cert-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.cert-item {
  display: grid;
  gap: 0.2rem;
  padding: 1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, transform 0.2s;
}
.cert-item:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.cert-item:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.cert-title { font-weight: 600; color: var(--text); }
.cert-meta { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--muted); }
.cert-open { font-size: 0.85rem; color: var(--accent-deep); }

/* ─── Timeline / Experience ──────────────────────────────── */
.timeline { display: grid; gap: 1.25rem; }
.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.8rem 2rem;
  transition: border-color 0.25s;
}
.timeline-card:hover { border-color: var(--border-strong); }
.tl-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}
.tl-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
}
.tl-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: rgb(var(--gold-rgb) / 0.09);
  border: 1px solid rgb(var(--gold-rgb) / 0.24);
  color: var(--gold);
  letter-spacing: 0.02em;
}
.timeline-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.15rem;
  color: var(--strong);
}
.tl-company {
  font-size: 0.85rem;
  color: var(--gold);
  margin: 0 0 1rem;
  font-weight: 500;
}
.timeline-list {
  list-style: none;
  padding-left: 1.1rem;
  margin: 0;
}
.timeline-list li {
  position: relative;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 0.6rem;
}
.timeline-list li::before {
  content: "▹";
  position: absolute;
  left: -1.1rem;
  color: var(--accent);
  font-size: 0.75rem;
  top: 0.2rem;
}
.timeline-list li strong { color: var(--strong); }

/* ─── Contact ────────────────────────────────────────────── */
.section-contact { padding-bottom: 7rem; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-copy h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  color: var(--strong);
}
.contact-intro { color: var(--muted); line-height: 1.8; margin-bottom: 1.8rem; }
.contact-details { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-social { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--muted);
  transition: color 0.2s;
}
.contact-link:hover { color: var(--text); }
.contact-icon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--accent);
  width: 1.5rem;
}
.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  gap: 1rem;
}
.contact-form label {
  display: grid;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--field-bg);
  color: var(--text);
  padding: 0.85rem 1rem;
  transition: border-color 0.2s, background 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--field-bg-focus);
}
.contact-form ::placeholder { color: rgb(var(--ink-rgb) / 0.45); }
.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem 1rem;
  text-align: center;
  color: var(--success);
}
.form-success p { font-size: 1rem; color: var(--text); }
.form-error {
  font-size: 0.85rem;
  color: var(--danger);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  background: rgb(var(--danger-rgb) / 0.08);
  border: 1px solid rgb(var(--danger-rgb) / 0.22);
  margin-top: 0.25rem;
}

/* ─── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1.4rem 0;
}
.footer-mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0;
}

/* ─── Scroll animations ──────────────────────────────────── */
.animate { opacity: 0; transition: opacity 0.7s ease, transform 0.7s ease; }
.animate.visible { opacity: 1; transform: none !important; }
.fade-up    { transform: translateY(28px); }
.fade-left  { transform: translateX(-28px); }
.fade-right { transform: translateX(28px); }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1000px) {
  .project-featured .card-front { grid-template-columns: 1fr; align-self: start; align-content: start; }
  .project-featured .card-back { align-self: start; }
  /* En una columna la cara trasera es más alta que la frontal. Mientras no está girada
     no ocupa sitio, así la tarjeta mide lo que mide su contenido y no deja huecos.
     El retardo evita que se colapse antes de terminar el giro de vuelta.           */
  .project-featured:not(.flipped) .card-back {
    height: 0;
    padding-block: 0;
    border-width: 0;
    overflow: hidden;
    transition: height 0s linear 0.7s, padding 0s linear 0.7s, border-width 0s linear 0.7s;
  }
  .project-back-grid { grid-template-columns: 1fr; gap: 1.1rem; }
}

@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .terminal-card { max-width: 500px; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .certs-layout { grid-template-columns: minmax(0, 1fr); max-width: 460px; }
}

@media (max-width: 700px) {
  .hero-title { font-size: clamp(3rem, 11vw, 4.5rem); }
  .projects-grid,
  .stack-grid { grid-template-columns: 1fr; }
  .card-inner { height: 420px; }
  .project-featured .card-inner { height: auto; }
  .project-featured .card-front { gap: 1.25rem; }
  .stat-pills { grid-template-columns: repeat(3, 1fr); }
  .main-nav { gap: 0.9rem; }
}

@media (max-width: 500px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .main-nav { flex-wrap: wrap; }
  .button { width: 100%; }
  .hero-actions { flex-direction: column; }
  .hero-actions .button { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .carousel-track { scroll-behavior: auto; }
  .carousel-btn, .carousel-dot::before, .cert-item { transition: none; }
}