/* ═══════════════════════════════════════════════════════════════════════════
   GHI Forecasting · Koshi Province · Kathmandu University
   Unique UI — Sidebar layout · Warm technical aesthetic
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;1,400;1,600&family=Space+Grotesk:wght@300;400;500;600&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* ── Tokens ───────────────────────────────────────────────────────────────── */
:root {
  --bg:          #09070A;
  --bg-panel:    #0F0D10;
  --bg-row:      rgba(255,255,255,0.022);
  --bg-accent:   rgba(204,136,34,0.07);

  --border:      rgba(200,160,90,0.14);
  --border-mid:  rgba(200,160,90,0.24);
  --border-rule: rgba(255,255,255,0.06);

  --amber:       #CC8822;
  --amber-dim:   rgba(204,136,34,0.18);
  --amber-glow:  rgba(204,136,34,0.08);

  --text:        #DDD4C8;
  --text-2:      #8A7F74;
  --text-3:      #4A4440;
  --text-amber:  #CC8822;

  --sidebar-w:   288px;
  --ease:        0.18s ease;
}

/* ── Reset ────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

em { font-style: italic; }
strong { font-weight: 600; color: var(--text); }
code {
  font-family: 'Space Mono', monospace;
  font-size: 0.82em;
  color: var(--amber);
  background: var(--amber-dim);
  padding: 1px 5px;
  border-radius: 2px;
  letter-spacing: -0.02em;
}
sup { font-size: 0.7em; vertical-align: super; }

::selection { background: rgba(204,136,34,0.22); color: var(--amber); }

/* ── Loader ───────────────────────────────────────────────────────────────── */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: opacity 0.5s ease;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.loader-ring {
  width: 56px; height: 56px;
  animation: spin 2s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loader-ring circle {
  fill: none;
  stroke-width: 1.5;
  cx: 40; cy: 40;
}

.loader-ring circle:first-child { stroke: rgba(204,136,34,0.15); }
.loader-ring-fill {
  stroke: var(--amber);
  stroke-dasharray: 100 200;
  stroke-linecap: round;
}

.loader-label {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* ── Layout ───────────────────────────────────────────────────────────────── */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0 0 24px;

  /* Hide scrollbar visually */
  scrollbar-width: none;
}
.sidebar::-webkit-scrollbar { display: none; }

/* Solar diagram */
.sidebar-diagram {
  padding: 28px 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.solar-diagram {
  width: 140px; height: 140px;
  opacity: 0.9;
}

/* SVG sub-elements */
.sd-ring {
  fill: none;
  stroke: rgba(200,160,90,0.18);
  stroke-width: 1;
}
.sd-ring--dim { stroke: rgba(200,160,90,0.08); stroke-dasharray: 3 5; }
.sd-line {
  stroke: rgba(200,160,90,0.22);
  stroke-width: 1;
}
.sd-line--dim {
  stroke: rgba(200,160,90,0.10);
  stroke-width: 0.8;
}
.sd-arc {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1.4;
  stroke-dasharray: none;
  animation: arc-pulse 3s ease-in-out infinite alternate;
}
@keyframes arc-pulse {
  0%   { opacity: 0.5; }
  100% { opacity: 1; }
}
.sd-dot  { fill: var(--amber); }
.sd-dot--sm { r: 2.5; opacity: 0.7; }
.sd-sun  {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1;
  opacity: 0.5;
}
.sd-sun-core {
  fill: var(--amber);
  opacity: 0.85;
  animation: core-pulse 3s ease-in-out infinite alternate;
}
@keyframes core-pulse {
  0%   { opacity: 0.5; r: 6; }
  100% { opacity: 0.9; r: 7.5; }
}
.sd-text {
  font-family: 'Space Mono', monospace;
  font-size: 7px;
  fill: var(--text-3);
  letter-spacing: 0.06em;
}
.sd-text--accent { fill: var(--amber); }
.sd-text--sm     { font-size: 6px; }

.diagram-caption {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: center;
}

/* Sidebar identity */
.sidebar-identity {
  padding: 18px 24px 10px;
  border-bottom: 1px solid var(--border);
}

.si-ku-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}

.si-ku-badge {
  width: 28px; height: 28px;
  background: var(--amber);
  color: #09070A;
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.si-ku-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 10.5px;
  color: var(--text-2);
  line-height: 1.4;
}

.si-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 6px;
}

.si-sub {
  font-family: 'Space Mono', monospace;
  font-size: 9.5px;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

/* Sidebar rule */
.sidebar-rule {
  height: 1px;
  background: var(--border);
  margin: 0;
  flex-shrink: 0;
}

/* Sidebar KPIs */
.sidebar-kpis {
  padding: 14px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.skpi {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0 6px;
}

.skpi-val {
  font-family: 'Space Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1;
}
.skpi--accent .skpi-val { color: var(--amber); }

.skpi-unit {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  align-self: flex-end;
  padding-bottom: 1px;
}

.skpi-lbl {
  width: 100%;
  font-size: 10px;
  color: var(--text-2);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

/* Sidebar nav */
.sidebar-nav {
  padding: 14px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-bottom: 1px solid var(--border);
}

.snav-link {
  display: flex;
  align-items: center;
  padding: 7px 24px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  transition: color var(--ease), background var(--ease);
  position: relative;
  letter-spacing: 0.01em;
}
.snav-link::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  height: 0;
  width: 2px;
  background: var(--amber);
  border-radius: 0 2px 2px 0;
  transition: height var(--ease), opacity var(--ease);
  opacity: 0;
}
.snav-link:hover {
  color: var(--text);
  background: var(--bg-row);
}
.snav-link.snav-active {
  color: var(--amber);
}
.snav-link.snav-active::before {
  height: 18px;
  opacity: 1;
}

/* Sidebar metadata */
.sidebar-meta {
  padding: 14px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}

.smeta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11px;
  line-height: 1;
}
.smeta-row span:first-child {
  font-family: 'Space Mono', monospace;
  color: var(--text-3);
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.smeta-row span:last-child {
  color: var(--text-2);
  font-size: 11px;
  text-align: right;
}

.sidebar-generated {
  padding: 12px 24px 0;
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ── Main Content ─────────────────────────────────────────────────────────── */
.content {
  flex: 1;
  min-width: 0;
  padding: 0 0 60px;
}

/* ── Section ──────────────────────────────────────────────────────────────── */
.c-section {
  padding: 52px 52px 8px;
  max-width: 1060px;
}

.c-section-label {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}

.c-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(26px, 3vw, 44px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}
.c-title em { color: var(--amber); }

.c-heading {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(20px, 2.2vw, 32px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.c-body-text {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.72;
  max-width: 700px;
}

.c-rule {
  height: 1px;
  background: var(--border-rule);
  margin: 0 52px;
}

/* ── Abstract ─────────────────────────────────────────────────────────────── */
.abstract-block {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.abstract-block p {
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 720px;
}
.abstract-block strong { color: var(--text); }

/* KPI Strip */
.kpi-strip {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  background: var(--bg-panel);
  max-width: 860px;
}

.kpi-strip-item {
  flex: 1;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ksi-divider {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

.kpi-strip-item--accent { background: var(--bg-accent); }

.ksi-num {
  font-family: 'Space Mono', monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.04em;
  line-height: 1;
}
.kpi-strip-item--accent .ksi-num { color: var(--amber); }

.ksi-unit {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.ksi-lbl {
  font-size: 11.5px;
  color: var(--text-2);
  margin-top: 2px;
}

/* ── Methodology rows ─────────────────────────────────────────────────────── */
.method-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  max-width: 860px;
}

.mrow {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--ease);
}
.mrow:last-child { border-bottom: none; }
.mrow:hover { background: var(--bg-row); }

.mrow-num {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.04em;
  padding: 22px 22px 22px 24px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  width: 68px;
  display: flex;
  align-items: flex-start;
  padding-top: 24px;
}

.mrow-body {
  padding: 20px 24px;
}

.mrow-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
}

.mrow-desc {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.72;
  max-width: 680px;
}
.mrow-desc strong { color: var(--text); }

/* ── Panel (chart wrapper) ────────────────────────────────────────────────── */
.panel {
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg-panel);
  overflow: hidden;
  max-width: 960px;
}

.panel-header {
  padding: 14px 18px 0;
}

.panel-label {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 12px 18px 0;
}

.panel-sub {
  font-size: 11.5px;
  color: var(--text-3);
  padding: 4px 18px 0;
}

/* ── Figure Captions ──────────────────────────────────────────────────────── */
.fig-caption {
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.62;
  font-style: italic;
  padding: 10px 18px 14px;
  border-top: 1px solid var(--border-rule);
  margin-top: 4px;
  background: rgba(0,0,0,0.15);
}
.fig-caption strong {
  font-style: normal;
  font-weight: 600;
  color: var(--text-2);
}

/* ── Legend ───────────────────────────────────────────────────────────────── */
.legend-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  padding: 0 4px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: var(--text-2);
  font-family: 'Space Mono', monospace;
}
.legend-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-line {
  width: 20px; height: 2px;
  flex-shrink: 0;
  background: repeating-linear-gradient(90deg, currentColor 0, currentColor 4px, transparent 4px, transparent 8px);
}

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table thead th {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
  background: var(--bg-panel);
}

.data-table tbody tr {
  border-bottom: 1px solid var(--border-rule);
  transition: background var(--ease);
}
.data-table tbody tr:last-child { border-bottom: none; }
.data-table tbody tr:hover { background: var(--bg-row); }

.data-table tbody td {
  padding: 10px 18px;
  color: var(--text-2);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.data-table tbody td:first-child {
  color: var(--text);
  font-weight: 500;
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.02em;
}

.t-loading {
  text-align: center;
  color: var(--text-3);
  font-style: italic;
  padding: 24px !important;
}

.td-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  background: var(--amber-dim);
  border: 1px solid rgba(204,136,34,0.3);
  border-radius: 2px;
  padding: 2px 7px;
}

.td-yr-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ── Temporal Analysis split ──────────────────────────────────────────────── */
.split-row {
  display: grid;
  grid-template-columns: 58fr 42fr;
  gap: 16px;
  max-width: 960px;
}

.split-panel { max-width: unset; }

/* ── Pickers ──────────────────────────────────────────────────────────────── */
.picker-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 10px 18px 0;
}

.picker-tag {
  font-family: 'Space Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-right: 2px;
}

.pick-btn {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11.5px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--ease);
  white-space: nowrap;
}
.pick-btn:hover {
  border-color: rgba(204,136,34,0.35);
  color: var(--text);
  background: var(--amber-glow);
}
.pick-btn.pick-active {
  background: var(--amber-dim);
  border-color: rgba(204,136,34,0.48);
  color: var(--amber);
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.c-footer {
  margin: 48px 52px 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 960px;
}

.cf-left {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.cf-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.cf-sub {
  font-size: 12px;
  color: var(--text-2);
}

.cf-tech {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.cf-right {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-align: right;
}

/* ── Fade-in ──────────────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .split-row { grid-template-columns: 1fr; }
}

@media (max-width: 800px) {
  :root { --sidebar-w: 240px; }
  .c-section { padding: 40px 28px 8px; }
  .c-rule { margin: 0 28px; }
  .c-footer { margin: 40px 28px 0; }
}

@media (max-width: 640px) {
  .layout { flex-direction: column; }
  .sidebar {
    width: 100%;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-diagram { display: none; }
  .kpi-strip { flex-direction: column; }
  .ksi-divider { width: auto; height: 1px; }
}