/* ==========================================================================
   davidgn.pages.dev · Estil professional i sobri
   David González Naveros · Portfolio & Presentació Personal
   ========================================================================== */

:root {
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: var(--font-sans);

  /* Paleta Mode Clar */
  --bg-body: #f8f7f4;
  --bg-surface: #ffffff;
  --bg-subtle: #f0eee9;

  --text-primary: #1c2733;
  --text-secondary: #49586a;
  --text-muted: #6b7a8c;
  --text-inverse: #ffffff;

  --border-color: #e3e0d9;
  --border-strong: #c9c5bb;

  --color-accent: #0a66c2;
  --color-accent-dark: #084d94;
  --color-accent-soft: rgba(10, 102, 194, 0.08);
  --color-ink: #1c2733;
  --color-ink-hover: #10161d;
  --color-status: #1a7f4b;

  --shadow-sm: 0 1px 2px rgba(28, 39, 51, 0.05);
  --shadow-md: 0 1px 3px rgba(28, 39, 51, 0.07), 0 4px 12px rgba(28, 39, 51, 0.05);
  --shadow-lg: 0 2px 6px rgba(28, 39, 51, 0.06), 0 12px 28px rgba(28, 39, 51, 0.08);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --container-max: 1120px;
  --header-height: 68px;
  --transition: all 0.18s ease;
}

html[data-theme="dark"] {
  --bg-body: #0f172a;
  --bg-surface: #1a2434;
  --bg-subtle: #141d2b;

  --text-primary: #eef2f7;
  --text-secondary: #b8c2d0;
  --text-muted: #8b98aa;
  --text-inverse: #0f172a;

  --border-color: #2b3a4f;
  --border-strong: #3d4f68;

  --color-accent: #5b9bd9;
  --color-accent-dark: #7db3e4;
  --color-accent-soft: rgba(91, 155, 217, 0.14);
  --color-ink: #eef2f7;
  --color-ink-hover: #ffffff;
  --color-status: #3fae7c;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.35), 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.35), 0 12px 28px rgba(0, 0, 0, 0.35);
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-body);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.015em;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.icon {
  width: 20px;
  height: 20px;
  flex: none;
}

.icon-sm {
  width: 15px;
  height: 15px;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg-body) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.brand-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--bg-subtle);
  overflow: hidden;
  display: grid;
  place-items: center;
}

.brand-avatar img {
  width: 22px;
  height: auto;
  image-rendering: pixelated;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.68rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.09em;
  color: var(--text-muted);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.35rem 0.2rem;
  transition: var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-theme {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: var(--bg-surface);
  color: var(--text-secondary);
  display: grid;
  place-items: center;
  transition: var(--transition);
}

.btn-theme:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-theme .icon {
  width: 17px;
  height: 17px;
}

.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr;
  gap: 4rem;
  align-items: center;
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--color-status);
  border-radius: 50%;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.9rem;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  line-height: 1.4;
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.1rem;
  max-width: 34rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 2.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.97rem;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--bg-body);
}

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

.btn-accent {
  background: var(--color-accent);
  color: #ffffff;
}

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

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-outline:hover {
  background: var(--bg-surface);
  border-color: var(--text-muted);
}

html[data-theme="dark"] .btn-primary {
  color: var(--text-inverse);
}

.hero-facts {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.9rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.hero-fact {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-fact-sep {
  width: 1px;
  height: 1rem;
  background: var(--border-strong);
}

/* Hero Visual / Avatar Card */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.avatar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  max-width: 300px;
}

.avatar-portrait {
  width: 96px;
  height: 96px;
  margin-bottom: 1.1rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-subtle);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.avatar-portrait img {
  width: 56px;
  height: auto;
  margin-bottom: -2px;
  image-rendering: pixelated;
}

.avatar-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.avatar-role {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 1.1rem;
}

.avatar-pills {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  justify-content: center;
}

.pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 0.22rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

a.pill-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-head {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 3rem;
}

.section-kicker {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.9rem, 3.6vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 0.8rem;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Philosophy & About Grid
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.9rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.card-icon {
  width: 2.9rem;
  height: 2.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: grid;
  place-items: center;
  margin-bottom: 1.2rem;
}

.card-title {
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 0.7rem;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.65;
}

/* ==========================================================================
   Projects Grid
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.6rem;
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.9rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  transition: var(--transition);
  position: relative;
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.project-card-featured {
  border-color: color-mix(in srgb, var(--color-accent) 35%, var(--border-color));
  background: linear-gradient(160deg, var(--color-accent-soft), var(--bg-surface) 55%);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.project-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-subtle);
  color: var(--text-secondary);
}

.project-badge.active {
  background: var(--color-accent-soft);
  border-color: color-mix(in srgb, var(--color-accent) 35%, var(--border-color));
  color: var(--color-accent);
}

.project-title {
  font-size: 1.3rem;
  font-weight: 700;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: auto;
  padding-top: 0.4rem;
}

.tag {
  font-size: 0.74rem;
  font-weight: 500;
  padding: 0.18rem 0.6rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

.project-action {
  margin-top: 0.7rem;
}

/* ==========================================================================
   Career Timeline
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 2.2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border-strong);
}

.timeline-item {
  position: relative;
  margin-bottom: 1.8rem;
}

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

.timeline-marker {
  position: absolute;
  left: -2.2rem;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  background: var(--bg-body);
  z-index: 2;
}

.timeline-item.active .timeline-marker {
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.timeline-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.6rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.timeline-content:hover {
  box-shadow: var(--shadow-md);
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.timeline-role {
  font-size: 1.12rem;
  font-weight: 700;
}

.timeline-period {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.timeline-org {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.55rem;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Education & Skills
   ========================================================================== */
.edu-skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.column-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-primary);
}

.column-title .icon {
  color: var(--color-accent);
}

.edu-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.edu-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.4rem;
  box-shadow: var(--shadow-sm);
}

.edu-degree {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.edu-school {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
}

.edu-years {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.15rem;
}

.skills-group {
  margin-bottom: 1.4rem;
}

.skills-group:last-child {
  margin-bottom: 0;
}

.skills-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-secondary);
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.skills-title .icon {
  color: var(--color-accent);
}

.skills-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.8rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.skill-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  box-shadow: var(--shadow-md);
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.1rem;
  margin: 2.2rem 0;
}

.contact-card {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  color: var(--color-accent);
  display: grid;
  place-items: center;
  margin-bottom: 0.2rem;
}

.contact-icon .icon {
  width: 22px;
  height: 22px;
}

.contact-label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.contact-value {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  word-break: break-all;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface);
  padding: 2.2rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2rem;
  font-weight: 500;
}

.footer-nav a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-copy {
  font-size: 0.84rem;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 900px) {
  .hero {
    padding: 3.5rem 0 3rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-facts {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .avatar-card {
    max-width: 280px;
  }

  .edu-skills-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero-facts {
    flex-direction: column;
    gap: 0.5rem;
  }

  .hero-fact-sep {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1.5rem;
    gap: 0.9rem;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.is-active {
    transform: translateY(0);
  }

  .nav-toggle {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}