/* ==========================================================================
   MINIMALIST ACADEMIC EDITORIAL THEME - ALLYSSON ALLAN DE FARIAS, PhD
   - Pure typography: Newsreader (Editorial Serif) + Instrument Sans (Humanist UI)
     + JetBrains Mono (Technical Monospace)
   - Archival Paper & Carbon Ink Palette (Light & Dark color-scheme)
   - Zero Animations & Zero Transitions: Immediate, stable, motion-free
   - Minimalist Research Programs & Methodologies layout (pure typography)
   - Dual Portrait Switcher (Formal Studio Portrait & Studio Ghibli Art)
   - Bulletproof Unicode symbols and emoticons for clean interactive controls
   ========================================================================== */

@layer reset, base, layout, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    /* Strictly remove all animations, transitions and motion */
    animation: none !important;
    transition: none !important;
  }

  html {
    -webkit-text-size-adjust: 100%;
    tab-size: 4;
    scroll-behavior: auto !important;
  }

  body {
    min-block-size: 100dvb;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img, svg, picture, video {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

  input, button, textarea, select {
    font: inherit;
    color: inherit;
  }

  button {
    cursor: pointer;
    background: none;
    border: none;
  }

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

  ul, ol {
    list-style: none;
  }
}

@layer base {
  :root {
    color-scheme: light dark;

    /* Base Archival Paper Palette */
    --paper-canvas-light: #faf8f5;
    --paper-surface-light: #ffffff;
    --paper-surface-subtle-light: #f3efe8;
    --paper-border-subtle-light: #e5dfd5;
    --paper-border-strong-light: #cac2b5;

    --ink-primary-light: #14171a;
    --ink-secondary-light: #3d434c;
    --ink-muted-light: #68707d;

    --brand-navy-light: #16426f;
    --brand-ochre-light: #92400e;

    /* Dark Basalt Manuscript Palette */
    --paper-canvas-dark: #0c0f14;
    --paper-surface-dark: #131720;
    --paper-surface-subtle-dark: #1a202c;
    --paper-border-subtle-dark: #242c3b;
    --paper-border-strong-dark: #3a455a;

    --ink-primary-dark: #f2f4f8;
    --ink-secondary-dark: #9ba7b9;
    --ink-muted-dark: #697589;

    --brand-navy-dark: #38bdf8;
    --brand-ochre-dark: #f59e0b;

    /* Dynamic assignment */
    --bg-canvas: var(--paper-canvas-light);
    --bg-surface: var(--paper-surface-light);
    --bg-surface-subtle: var(--paper-surface-subtle-light);
    --border-subtle: var(--paper-border-subtle-light);
    --border-strong: var(--paper-border-strong-light);
    --text-primary: var(--ink-primary-light);
    --text-secondary: var(--ink-secondary-light);
    --text-muted: var(--ink-muted-light);
    --brand-accent: var(--brand-navy-light);
    --brand-gold: var(--brand-ochre-light);
    --scrollbar-track: #f3efe8;
    --scrollbar-thumb: #cac2b5;

    @supports (color: light-dark(white, black)) {
      --bg-canvas: light-dark(var(--paper-canvas-light), var(--paper-canvas-dark));
      --bg-surface: light-dark(var(--paper-surface-light), var(--paper-surface-dark));
      --bg-surface-subtle: light-dark(var(--paper-surface-subtle-light), var(--paper-surface-subtle-dark));
      --border-subtle: light-dark(var(--paper-border-subtle-light), var(--paper-border-subtle-dark));
      --border-strong: light-dark(var(--paper-border-strong-light), var(--paper-border-strong-dark));
      --text-primary: light-dark(var(--ink-primary-light), var(--ink-primary-dark));
      --text-secondary: light-dark(var(--ink-secondary-light), var(--ink-secondary-dark));
      --text-muted: light-dark(var(--ink-muted-light), var(--ink-muted-dark));
      --brand-accent: light-dark(var(--brand-navy-light), var(--brand-navy-dark));
      --brand-gold: light-dark(var(--brand-ochre-light), var(--brand-gold-dark));
      --scrollbar-track: light-dark(#f3efe8, #1a202c);
      --scrollbar-thumb: light-dark(#cac2b5, #3a455a);
    }

    @media (prefers-color-scheme: dark) {
      :root:not([data-theme="light"]) {
        --bg-canvas: var(--paper-canvas-dark);
        --bg-surface: var(--paper-surface-dark);
        --bg-surface-subtle: var(--paper-surface-subtle-dark);
        --border-subtle: var(--paper-border-subtle-dark);
        --border-strong: var(--paper-border-strong-dark);
        --text-primary: var(--ink-primary-dark);
        --text-secondary: var(--ink-secondary-dark);
        --text-muted: var(--ink-muted-dark);
        --brand-accent: var(--brand-navy-dark);
        --brand-gold: var(--brand-ochre-dark);
        --scrollbar-track: #1a202c;
        --scrollbar-thumb: #3a455a;
      }
    }

    &[data-theme="dark"] {
      --bg-canvas: var(--paper-canvas-dark);
      --bg-surface: var(--paper-surface-dark);
      --bg-surface-subtle: var(--paper-surface-subtle-dark);
      --border-subtle: var(--paper-border-subtle-dark);
      --border-strong: var(--paper-border-strong-dark);
      --text-primary: var(--ink-primary-dark);
      --text-secondary: var(--ink-secondary-dark);
      --text-muted: var(--ink-muted-dark);
      --brand-accent: var(--brand-navy-dark);
      --brand-gold: var(--brand-ochre-dark);
      --scrollbar-track: #1a202c;
      --scrollbar-thumb: #3a455a;
      color-scheme: dark;
    }

    &[data-theme="light"] {
      --bg-canvas: var(--paper-canvas-light);
      --bg-surface: var(--paper-surface-light);
      --bg-surface-subtle: var(--paper-surface-subtle-light);
      --border-subtle: var(--paper-border-subtle-light);
      --border-strong: var(--paper-border-strong-light);
      --text-primary: var(--ink-primary-light);
      --text-secondary: var(--ink-secondary-light);
      --text-muted: var(--ink-muted-light);
      --brand-accent: var(--brand-navy-light);
      --brand-gold: var(--brand-ochre-light);
      --scrollbar-track: #f3efe8;
      --scrollbar-thumb: #cac2b5;
      color-scheme: light;
    }

    accent-color: var(--brand-accent);
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
    scrollbar-width: thin;

    /* Award-Winning Contemporary Typography Pairing */
    --font-serif: 'Newsreader', Iowan Old Style, 'Palatino Linotype', Palatino, Georgia, serif;
    --font-sans: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Subtle archival structural borders instead of heavy drop shadows */
    --shadow-soft: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-float: 0 8px 24px rgba(0, 0, 0, 0.12);
  }

  body {
    font-family: var(--font-sans);
    font-size: clamp(1rem, 0.95rem + 0.25vw, 1.06rem);
    line-height: 1.68;
    color: var(--text-secondary);
    background-color: var(--bg-canvas);
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.22;
    letter-spacing: -0.015em;
    text-wrap: balance;
  }

  p, li, blockquote {
    text-wrap: pretty;
    max-inline-size: 72ch;
  }

  code, pre, kbd {
    font-family: var(--font-mono);
    font-size: 0.88em;
    font-variant-numeric: tabular-nums;
  }
}

@layer layout {
  .site-container {
    inline-size: min(100% - 2.5rem, 1140px);
    margin-inline: auto;
  }

  .site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 100;
    background-color: var(--bg-canvas);
    border-block-end: 1px solid var(--border-subtle);
    padding-block: 0.85rem;
  }

  .nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }

  .brand-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.12rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
  }

  .brand-initials {
    display: inline-grid;
    place-items: center;
    inline-size: 1.9rem;
    block-size: 1.9rem;
    border-radius: 4px;
    background-color: var(--text-primary);
    color: var(--bg-canvas);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.05em;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 0.35rem;
  }

  .nav-link {
    padding-inline: 0.75rem;
    padding-block: 0.35rem;
    border-radius: 4px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);

    &:hover, &:focus-visible {
      color: var(--text-primary);
      background-color: var(--bg-surface-subtle);
    }
  }

  .nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .mobile-menu-toggle {
    display: none;
    padding: 0.45rem 0.65rem;
    border-radius: 4px;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    background-color: var(--bg-surface);
    font-size: 1.05rem;
    line-height: 1;
  }

  @media (max-width: 820px) {
    .main-nav {
      display: none;
      position: absolute;
      inset-block-start: 100%;
      inset-inline: 0;
      background-color: var(--bg-surface);
      border-block-end: 1px solid var(--border-subtle);
      padding: 1.25rem;
      flex-direction: column;
      box-shadow: var(--shadow-float);

      &.is-open {
        display: flex;
      }
    }

    .nav-links {
      flex-direction: column;
      inline-size: 100%;
    }

    .nav-link {
      inline-size: 100%;
      padding-block: 0.6rem;
    }

    .mobile-menu-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
  }

  main {
    display: grid;
    gap: clamp(3.5rem, 5vw, 5.5rem);
    padding-block: clamp(2.5rem, 4.5vw, 4.5rem);
  }

  .section-editorial-header {
    margin-block-end: 2rem;
    border-block-end: 1px solid var(--border-subtle);
    padding-block-end: 1.15rem;
  }

  .editorial-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-accent);
    display: inline-block;
    margin-block-end: 0.45rem;
  }

  .editorial-title {
    font-size: clamp(1.85rem, 1.4rem + 1.3vw, 2.65rem);
    font-weight: 600;
    margin-block-end: 0.5rem;
  }

  .editorial-lead {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-inline-size: 75ch;
    line-height: 1.6;
  }
}

@layer components {
  /* Emoticon and Unicode Symbol Containers */
  .btn-symbol {
    font-style: normal;
    font-size: 1.1em;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .network-symbol {
    font-style: normal;
    font-size: 1.15rem;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Academic Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding-inline: 1.15rem;
    padding-block: 0.52rem;
    border-radius: 5px;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.01em;
  }

  .btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-canvas);
    border: 1px solid var(--text-primary);

    &:hover {
      background-color: var(--brand-accent);
      border-color: var(--brand-accent);
      color: #ffffff;
    }
  }

  .btn-outline {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);

    &:hover {
      background-color: var(--bg-surface-subtle);
      border-color: var(--text-primary);
    }
  }

  .icon-btn {
    display: inline-grid;
    place-items: center;
    inline-size: 2.25rem;
    block-size: 2.25rem;
    border-radius: 5px;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    background-color: var(--bg-surface);
    font-size: 1rem;
    cursor: pointer;

    &:hover {
      color: var(--text-primary);
      border-color: var(--border-strong);
      background-color: var(--bg-surface-subtle);
    }
  }

  /* HERO SECTION */
  .hero-grid {
    display: grid;
    grid-template-columns: 1.35fr 0.65fr;
    gap: clamp(2rem, 4vw, 4rem);
    align-items: start;
  }

  @media (max-width: 880px) {
    .hero-grid {
      grid-template-columns: 1fr;
    }
  }

  .hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--brand-accent);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-block-end: 0.75rem;
    display: block;
  }

  .hero-name {
    font-size: clamp(2.35rem, 1.8rem + 2vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-block-end: 1rem;
  }

  .hero-affiliations {
    font-size: 1.05rem;
    color: var(--text-primary);
    line-height: 1.55;
    margin-block-end: 1.35rem;

    & strong {
      display: block;
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--brand-accent);
    }

    & span {
      color: var(--text-secondary);
      font-size: 0.95rem;
      display: block;
      margin-block-start: 0.25rem;
    }
  }

  .hero-narrative {
    font-family: var(--font-serif);
    font-size: 1.12rem;
    color: var(--text-secondary);
    line-height: 1.72;
    margin-block-end: 1.85rem;
  }

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

  /* PROFILE ASIDE: Archival presentation with Dual Portrait Switcher */
  .profile-aside {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .profile-frame {
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 1 / 1;
    border: 1px solid var(--border-subtle);
    background-color: var(--bg-surface-subtle);
    box-shadow: var(--shadow-soft);
    cursor: pointer;
  }

  .profile-photo {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    display: block;
  }

  /* Minimalist Segmented Portrait Switcher */
  .portrait-switcher {
    display: flex;
    align-items: center;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 5px;
    padding: 0.2rem;
    gap: 0.25rem;
  }

  .portrait-switch-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding-block: 0.35rem;
    padding-inline: 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    border: none;
    background: transparent;
    cursor: pointer;

    &.is-active {
      background-color: var(--bg-surface-subtle);
      color: var(--text-primary);
      font-weight: 600;
      border: 1px solid var(--border-subtle);
    }

    &:hover:not(.is-active) {
      color: var(--text-primary);
    }
  }

  .profile-quick-facts {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    font-size: 0.85rem;
  }

  .fact-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block: 0.45rem;
    border-block-end: 1px solid var(--border-subtle);

    &:last-child {
      border-block-end: none;
    }
  }

  .fact-label {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.04em;
  }

  .fact-val {
    color: var(--text-primary);
    font-weight: 600;
  }

  /* ==========================================================================
     MINIMALIST RESEARCH PROGRAMS & METHODOLOGIES (PURE TYPOGRAPHY)
     ========================================================================== */
  .research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  @media (max-width: 860px) {
    .research-grid {
      grid-template-columns: 1fr;
    }
  }

  .research-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 1.6rem 1.85rem;
    display: flex;
    flex-direction: column;

    &:hover {
      border-color: var(--border-strong);
    }
  }

  .research-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-block-end: 0.85rem;
  }

  .research-card-num {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--brand-accent);
    letter-spacing: 0.05em;
  }

  .research-card-title {
    font-family: var(--font-serif);
    font-size: 1.28rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-block-end: 0.75rem;
    line-height: 1.35;
  }

  .research-card-text {
    font-size: 0.93rem;
    color: var(--text-secondary);
    line-height: 1.66;
    margin-block-end: 1.35rem;
    flex-grow: 1;

    & code {
      font-size: 0.86em;
      padding: 0.1em 0.3em;
      border-radius: 3px;
      background-color: var(--bg-surface-subtle);
      border: 1px solid var(--border-subtle);
    }
  }

  .research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    padding-block-start: 0.9rem;
    border-block-start: 1px solid var(--border-subtle);
  }

  .meta-tag {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    padding-inline: 0.55rem;
    padding-block: 0.22rem;
    border-radius: 4px;
    background-color: var(--bg-surface-subtle);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
  }

  .meta-tag-highlight {
    color: var(--brand-accent);
    border-color: color-mix(in oklab, var(--brand-accent) 40%, transparent);
    background-color: color-mix(in oklab, var(--brand-accent) 8%, transparent);
  }

  /* ==========================================================================
     BIBLIOGRAPHIC PUBLICATIONS LIST
     Styled like an academic press catalog
     ========================================================================== */
  .pub-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .pub-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 1.35rem 1.6rem;

    &:hover {
      border-color: var(--border-strong);
    }
  }

  .pub-type-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--brand-accent);
    margin-block-end: 0.4rem;
    display: inline-block;
  }

  .pub-title {
    font-family: var(--font-serif);
    font-size: 1.18rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-block-end: 0.45rem;
    line-height: 1.4;

    & a:hover {
      color: var(--brand-accent);
      text-decoration: underline;
    }
  }

  .pub-authors {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-block-end: 0.4rem;
    line-height: 1.5;
  }

  .pub-journal {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;

    & a {
      font-style: normal;
      color: var(--brand-accent);
      text-decoration: underline;
      text-underline-offset: 2px;
    }
  }

  /* ==========================================================================
     APPOINTMENTS & PROFESSIONAL TRAJECTORY
     ========================================================================== */
  .positions-table {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    overflow: hidden;
    background-color: var(--bg-surface);
  }

  .position-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 1.5rem;
    padding: 1.25rem 1.6rem;
    border-block-end: 1px solid var(--border-subtle);

    &:last-child {
      border-block-end: none;
    }
  }

  @media (max-width: 640px) {
    .position-row {
      grid-template-columns: 1fr;
      gap: 0.35rem;
    }
  }

  .position-period {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--brand-accent);
    padding-block-start: 0.15rem;
  }

  .position-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .position-institution {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-block-end: 0.35rem;
  }

  .position-summary {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.58;
  }

  /* ==========================================================================
     CONNECT & ACADEMIC NETWORKS
     ========================================================================== */
  .connect-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: clamp(1.75rem, 3.5vw, 2.75rem);
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.25rem;
    align-items: center;
  }

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

  .academic-network-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
    gap: 0.65rem;
  }

  .network-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0.9rem;
    border-radius: 5px;
    background-color: var(--bg-surface-subtle);
    border: 1px solid var(--border-subtle);
    font-size: 0.86rem;
    font-weight: 500;
    color: var(--text-primary);

    &:hover {
      border-color: var(--text-primary);
      color: var(--brand-accent);
      background-color: var(--bg-surface);
    }
  }

  /* FOOTER */
  .site-footer {
    border-block-start: 1px solid var(--border-subtle);
    padding-block: 2rem;
    font-size: 0.85rem;
    color: var(--text-muted);
  }

  .footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
  }
}

@layer utilities {
  .text-brand { color: var(--brand-accent); }
  .text-gold { color: var(--brand-gold); }
  .font-mono { font-family: var(--font-mono); }
  .font-serif { font-family: var(--font-serif); }
  .sr-only {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
}