/* =========================================================
   Soft Cream / Moss Fluent CSS System
   ========================================================= */

:root {
  /* Common spacing and sizing */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-8: 32px;

  /* Corners */
  --r-base: 2px;
  --r-pill: 999px;

  /* Typography */
  --fs-12: 12px;
  --fs-13: 13px;
  --fs-16: 16px;
  --fs-20: 20px;
  --fs-28: 28px;

  /* Layout constraints */
  --max-width: 900px;
  --nav-backdrop-blur: blur(20px);
}

/* ---------------------------------------------------------
   Light Theme (Default)
   Soft cream / muted olive
   --------------------------------------------------------- */
:root {
  --bg: #faf7f0;                         /* very light cream */
  --card-bg: rgba(255, 252, 246, 0.76); /* warm acrylic */
  --card-border: rgba(96, 84, 64, 0.12);

  --fg: #2f2b25;                         /* warm near-black */
  --muted: #6f675c;

  --link: #617a55;                       /* muted olive green */
  --link-hover: #4f6546;
  --accent: #708b61;                     /* soft green accent */

  --btn-bg: rgba(255, 251, 244, 0.84);
  --btn-border: #d5cab8;
  --btn-hover: #f2eadf;

  --shadow-sm: 0 2px 4px rgba(55, 43, 26, 0.05);
  --shadow-hover: 0 8px 16px rgba(55, 43, 26, 0.11);
}

/* ---------------------------------------------------------
   Dark Theme
   Near-black forest / stronger contrast
   --------------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #070a08;                         /* near-black with green tint */
    --card-bg: rgba(15, 20, 17, 0.84);
    --card-border: rgba(224, 235, 222, 0.11);

    --fg: #f7faf4;                         /* brighter soft white */
    --muted: #c7d1c4;                      /* much clearer secondary text */

    --link: #b3d0ab;                       /* brighter sage */
    --link-hover: #d0e6ca;
    --accent: #86ab7d;                     /* readable moss accent */

    --btn-bg: rgba(244, 248, 242, 0.07);
    --btn-border: rgba(228, 236, 225, 0.13);
    --btn-hover: rgba(244, 248, 242, 0.15);

    --shadow-sm: 0 4px 8px rgba(0, 0, 0, 0.40);
    --shadow-hover: 0 12px 30px rgba(0, 0, 0, 0.62);
  }

  .card:hover,
  .win-element:hover {
    border-color: rgba(179, 208, 171, 0.38);
  }

  .avatar {
    color: #fcfdf9;
  }

  .nav-links a {
    color: #cdd6c9;
  }

  .nav-links a:hover {
    color: #f7faf4;
  }

  .subtitle,
  .meta {
    color: #c2ccc0;
  }

  .btn {
    color: var(--fg);
  }

  header {
    border-bottom-color: rgba(224, 235, 222, 0.09);
  }

  footer {
    border-top-color: rgba(224, 235, 222, 0.09);
  }
}

/* ---------------------------------------------------------
   Base Resets & Flow
   --------------------------------------------------------- */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  opacity: 0;
  animation: fadeIn 0.4s ease forwards;
}

body.loaded {
  opacity: 1;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  text-decoration: none;
  color: var(--link-hover);
}

.wrap,
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--s-8) var(--s-5);
}

/* ---------------------------------------------------------
   Typography
   --------------------------------------------------------- */
h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
}

h1 {
  font-size: var(--fs-28);
  letter-spacing: -0.5px;
}

h2 {
  font-size: var(--fs-20);
  margin-bottom: var(--s-4);
}

h3 {
  font-size: var(--fs-16);
  margin-bottom: var(--s-2);
}

.subtitle {
  color: var(--muted);
  line-height: 1.5;
}

.meta {
  color: var(--muted);
  font-size: var(--fs-13);
}

/* ---------------------------------------------------------
   Layout Components
   --------------------------------------------------------- */

/* Navigation / Header */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--card-bg);
  backdrop-filter: var(--nav-backdrop-blur);
  -webkit-backdrop-filter: var(--nav-backdrop-blur);
  border-bottom: 1px solid var(--card-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-3) var(--s-5);
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-links {
  display: flex;
  gap: var(--s-4);
}

.nav-links a {
  color: var(--muted);
  font-weight: 500;
  font-size: var(--fs-13);
}

.nav-links a:hover {
  color: var(--fg);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  font-weight: 600;
  color: var(--fg);
}

.avatar {
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: #f7f8f3;
  border-radius: var(--r-base);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* Sections */
.section {
  margin-top: var(--s-8);
  margin-bottom: var(--s-8);
  animation: slideUp 0.5s ease backwards;
}

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideUp {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  font-size: var(--fs-13);
  font-weight: 500;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--fg);
  border-radius: var(--r-base);
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.quick {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-3);
}

/* Cards */
.card,
.win-element {
  background: var(--card-bg);
  backdrop-filter: var(--nav-backdrop-blur);
  -webkit-backdrop-filter: var(--nav-backdrop-blur);
  border: 1px solid var(--card-border);
  border-radius: var(--r-base);
  padding: var(--s-5);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.card:hover,
.win-element:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(112, 139, 97, 0.30);
}

@media (prefers-color-scheme: dark) {
  .card:hover,
  .win-element:hover {
    border-color: rgba(144, 175, 138, 0.28);
  }
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--s-4);
  margin-top: var(--s-3);
}

/* Lists inside cards */
.list {
  margin: var(--s-3) 0 0 var(--s-4);
  padding: 0;
}

.list li {
  margin-bottom: var(--s-1);
}

/* Publications */
.pub-card {
  margin-bottom: var(--s-3);
}

/* Footer */
footer {
  text-align: center;
  padding: var(--s-8) var(--s-5);
  margin-top: var(--s-8);
  border-top: 1px solid var(--card-border);
  color: var(--muted);
  font-size: var(--fs-12);
}

.footer-license img {
  width: 1em;
  height: 1em;
  vertical-align: -0.2em;
  margin-left: .3em;
  opacity: .9;
}

/* Print CSS */
@media print {
  @page {
    size: letter;
    margin: 0.75in;
  }

  header,
  footer,
  .quick,
  .no-print {
    display: none !important;
  }

  body,
  html {
    background: #fffdf8 !important;
    color: #26231d !important;
    font-size: 11pt !important;
    line-height: 1.4 !important;
  }

  .wrap,
  .container {
    max-width: none !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .card,
  .win-element {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    padding: 0 !important;
    margin-bottom: 12pt !important;
    break-inside: avoid;
    transform: none !important;
  }

  .section {
    margin: 0 0 16pt 0 !important;
    animation: none !important;
  }

  .grid {
    display: block !important;
  }

  a {
    color: #2f2b25 !important;
    text-decoration: none !important;
  }

  h1 {
    font-size: 18pt !important;
    margin-bottom: 4pt !important;
  }

  h2 {
    font-size: 14pt !important;
    margin-bottom: 8pt !important;
    border-bottom: 1px solid #cfc3af;
    padding-bottom: 2pt;
  }

  h3 {
    font-size: 12pt !important;
    margin-bottom: 2pt !important;
  }
}