/* ============================================================
   WaterWorks Journal — professional academic-journal styling
   ============================================================ */
:root {
  --navy:      #14315D;
  --navy-dark: #0C2140;
  --ink:       #1A1A1A;
  --paper:     #FFFFFF;
  --grey-bg:   #F4F5F7;
  --line:      #DADFE3;
  --accent:    #B5502A;
  --link:      #14315D;

  --display: 'Source Serif 4', 'Georgia', serif;
  --body:    'IBM Plex Sans', -apple-system, sans-serif;
  --mono:    'IBM Plex Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--grey-bg);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.55;
  font-size: 16px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Title bar ---------- */
.title-bar {
  background: linear-gradient(120deg, #1B4A78, #14315D 60%);
  color: #fff;
  padding: 28px 0;
}
.title-bar .wrap { display: flex; align-items: center; gap: 16px; }
.title-bar h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 30px;
  letter-spacing: -0.01em;
}
.title-bar .badge {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  border: 1px solid rgba(255,255,255,0.4);
  padding: 4px 10px;
  border-radius: 2px;
  opacity: 0.85;
}

/* ---------- Nav ---------- */
nav.site-nav {
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.12);
}
nav.site-nav .wrap { display: flex; gap: 4px; }
nav.site-nav a {
  color: #E4E9F0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 16px 18px;
  display: inline-block;
}
nav.site-nav a:hover { background: var(--navy-dark); }

/* ---------- Layout ---------- */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  padding: 40px 0 80px;
}
@media (max-width: 860px) {
  .content-grid { grid-template-columns: 1fr; }
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.tabs button {
  background: none; border: none; cursor: pointer;
  font-family: var(--body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #6B7280;
  padding: 12px 2px 14px;
  border-bottom: 3px solid transparent;
}
.tabs button.active { color: var(--ink); border-bottom-color: var(--accent); }

/* ---------- Article list ---------- */
.article-item { padding: 22px 0; border-bottom: 1px solid var(--line); }
.article-item .kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.article-item h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.35;
}
.article-item h3 a:hover { color: var(--accent); }
.article-item .byline { font-size: 13px; color: #6B7280; margin-top: 6px; }

.view-more {
  display: inline-block;
  margin-top: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.02em;
}

/* ---------- Sidebar ---------- */
.side-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 24px;
  margin-bottom: 24px;
}
.issue-cover {
  background: linear-gradient(160deg, #1B4A78, #0C2140);
  color: #fff;
  padding: 24px;
  font-family: var(--display);
  margin-bottom: 16px;
}
.issue-cover .vol {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  opacity: 0.75;
  margin-bottom: 10px;
}
.issue-cover .name { font-size: 20px; font-weight: 600; line-height: 1.3; }

.side-card .label { font-size: 12px; color: #6B7280; margin-bottom: 2px; }
.side-card .current-issue { font-weight: 600; font-size: 15px; margin-bottom: 16px; }
.btn-stack { display: flex; flex-direction: column; gap: 10px; }
.btn {
  display: block;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 11px 16px;
  border: 1px solid var(--navy);
  color: var(--navy);
}
.btn:hover { background: var(--navy); color: #fff; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #96421F; }

.meta-list { list-style: none; }
.meta-list li {
  font-size: 13px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.meta-list li:first-child { border-top: none; }
.meta-list .k { color: #6B7280; }

.side-card h4 { font-family: var(--display); font-size: 15px; margin-bottom: 12px; }

/* ---------- Fee panel ---------- */
.fee-panel { background: var(--navy); color: #fff; padding: 48px 0; }
.fee-panel .wrap { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.fee-panel h2 { font-family: var(--display); font-size: 26px; font-weight: 600; margin-bottom: 12px; }
.fee-panel p { color: #C3CCDA; max-width: 480px; }
.fee-box { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.18); padding: 28px; }
.fee-box .amount-label { font-family: var(--mono); font-size: 12px; opacity: 0.7; text-transform: uppercase; letter-spacing: 0.05em; }
.fee-box ul { list-style: none; margin: 16px 0 20px; }
.fee-box li { font-size: 14px; padding: 6px 0; border-top: 1px solid rgba(255,255,255,0.12); }
.fee-box li:first-child { border-top: none; }
@media (max-width: 860px) { .fee-panel .wrap { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
footer { background: var(--navy-dark); color: #A6B2C4; padding: 32px 0; font-size: 13px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- Forms (submit.html) ---------- */
.page-header { padding: 40px 0 8px; }
.page-header .kicker {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.page-header h2 { font-family: var(--display); font-size: 28px; font-weight: 600; }
.page-header p { color: #6B7280; margin-top: 10px; max-width: 600px; }

.form-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 36px;
  max-width: 680px;
  margin: 32px 0 80px;
}
label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #4B5563;
  margin: 20px 0 8px;
}
label:first-child { margin-top: 0; }
input, textarea, select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  background: #fff;
  font-family: var(--body);
  font-size: 15px;
  color: var(--ink);
}
textarea { resize: vertical; min-height: 120px; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--navy); outline-offset: 1px; }
.form-note { font-size: 12px; color: #6B7280; margin-top: 6px; }
#form-status { margin-top: 18px; font-size: 14px; }
button[type="submit"] { border: none; cursor: pointer; font-family: var(--body); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }