/* =========================================================
   Sina — shared design system (dark, enterprise SaaS)
   ========================================================= */

:root {
  /* Core surfaces */
  --bg: #0b0c0f;                 /* page background (soft black) */
  --bg-elev: #121419;            /* slightly elevated bg / gradient stop */
  --surface: #14161c;            /* cards */
  --surface-2: #1a1d25;          /* elevated cards, hovers */
  --surface-muted: #1f222b;      /* inputs, chips */

  /* Borders */
  --border: #23262f;
  --border-strong: #2d313c;

  /* Text */
  --text: #f3f4f7;
  --text-muted: #a4a8b4;
  --text-subtle: #6c7080;

  /* Brand primary (blue — main color, enterprise-safe) */
  --brand: #3b82f6;
  --brand-hover: #60a5fa;
  --brand-deep: #1d4ed8;
  --brand-soft: rgba(59, 130, 246, 0.12);
  --brand-glow: rgba(59, 130, 246, 0.35);

  /* Accent (orange — used sparingly for highlights / glow details) */
  --accent: #ff7a1a;
  --accent-hover: #ff8c3a;
  --accent-soft: rgba(255, 122, 26, 0.12);
  --accent-glow: rgba(255, 122, 26, 0.35);

  /* Status colors (tuned for dark bg) */
  --success: #3ecf8e;
  --success-soft: rgba(62, 207, 142, 0.12);
  --warning: #f0b429;
  --warning-soft: rgba(240, 180, 41, 0.12);
  --danger: #ff5c5c;
  --danger-soft: rgba(255, 92, 92, 0.12);
  --info: #5aa9ff;
  --info-soft: rgba(90, 169, 255, 0.12);

  /* Shadows (dark-mode friendly — deeper, softer) */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --glow-accent: 0 0 0 1px rgba(255, 122, 26, 0.25),
                 0 10px 30px rgba(255, 122, 26, 0.18);
  --glow-brand:  0 0 0 1px rgba(59, 130, 246, 0.28),
                 0 10px 30px rgba(59, 130, 246, 0.22);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "SF Pro Text",
               "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;

  /* Subtle radial glow + grain, like the reference screenshot */
  background-image:
    radial-gradient(1200px 700px at 50% -20%, rgba(59, 130, 246, 0.10), transparent 65%),
    radial-gradient(900px 500px at 90% 10%, rgba(255, 122, 26, 0.05), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-elev) 100%);
  background-attachment: fixed;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(14, 16, 20, 0.72);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 60px;
  position: relative;
  z-index: 50;
}

.topbar h1 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* Brand logo mark (a small glowing square before the wordmark) */
.topbar h1::before {
  content: "";
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent) 0%, #ff4d00 100%);
  box-shadow: 0 0 12px var(--accent-glow);
  display: inline-block;
}

.topbar-left { display: flex; align-items: center; gap: 14px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.status-text {
  font-size: 12px;
  color: var(--text-subtle);
  font-weight: 500;
}
.status-text.signed-in { color: var(--success); }

/* ---------- Hamburger ---------- */
.hamburger-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  line-height: 1;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.hamburger-btn:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}

.nav-panel {
  position: absolute;
  top: 60px;
  left: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  display: none;
  overflow: hidden;
  z-index: 100;
}
.nav-panel.open { display: block; }
.nav-panel a {
  display: block;
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.12s ease, color 0.12s ease;
}
.nav-panel a + a { border-top: 1px solid var(--border); }
.nav-panel a:hover { background: var(--surface-2); color: var(--text); }
.nav-panel a.active { color: var(--brand-hover); background: var(--brand-soft); }

/* ---------- Layout ---------- */
.layout {
  display: flex;
  height: calc(100vh - 60px);
}

.main, .main-full {
  flex: 1;
  overflow-y: auto;
  padding: 48px 56px 80px;
  max-width: 100%;
}

/* Sidebar (unused on current pages — kept harmless) */
.sidebar {
  width: 280px;
  min-width: 280px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar-header { padding: 20px; border-bottom: 1px solid var(--border); }
.sidebar-header h2 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
}
.sidebar-count { font-size: 12px; color: var(--text-subtle); margin-top: 2px; }
.sidebar-body { flex: 1; overflow-y: auto; padding: 12px; }
.sidebar-empty { text-align: center; padding: 32px 16px; color: var(--text-subtle); font-size: 13px; }
.sidebar-footer { padding: 12px 20px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-subtle); }

/* ---------- Page header ---------- */
.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.page-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text);
  line-height: 1.1;
}
.page-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 8px;
  max-width: 560px;
}
.page-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
}

/* Legacy (Inbox main header) */
.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.main-header h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.6px;
  color: var(--text);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease,
              transform 0.08s ease, color 0.15s ease, box-shadow 0.2s ease;
  font-family: inherit;
  letter-spacing: -0.1px;
}
.btn:active { transform: translateY(1px); }

/* Primary — blue brand with glow */
.btn-primary {
  background: linear-gradient(180deg, var(--brand) 0%, var(--brand-deep) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3),
              inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn-primary:hover {
  background: linear-gradient(180deg, var(--brand-hover) 0%, #2563eb 100%);
  box-shadow: 0 8px 26px rgba(59, 130, 246, 0.45),
              inset 0 1px 0 rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}
.btn-primary:disabled {
  background: var(--surface-muted);
  color: var(--text-subtle);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Sign-in button (Microsoft) — same premium blue treatment */
.btn-signin {
  background: linear-gradient(180deg, var(--brand) 0%, var(--brand-deep) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3),
              inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn-signin:hover {
  background: linear-gradient(180deg, var(--brand-hover) 0%, #2563eb 100%);
  box-shadow: 0 8px 26px rgba(59, 130, 246, 0.45),
              inset 0 1px 0 rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

/* Ghost / secondary */
.btn-ghost {
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:disabled { opacity: 0.5; cursor: not-allowed; }

/* Large CTA variant */
.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.1px;
}

/* ---------- Email cards (Inbox) ---------- */
.email-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 14px;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.1s ease;
  box-shadow: var(--shadow-sm);
}
.email-card:hover {
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.email-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.email-number { font-weight: 600; font-size: 13px; color: var(--text-subtle); min-width: 22px; }

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.2px;
  border: 1px solid transparent;
}
.badge-action        { background: var(--danger-soft);  color: var(--danger);  border-color: rgba(255,92,92,0.25); }
.badge-no-action     { background: var(--success-soft); color: var(--success); border-color: rgba(62,207,142,0.25); }
.badge-category      { background: var(--info-soft);    color: var(--info);    border-color: rgba(90,169,255,0.25); }
.badge-vendor        { background: var(--warning-soft); color: var(--warning); border-color: rgba(240,180,41,0.25); }
.badge-owner-request { background: var(--accent-soft);  color: var(--accent);  border-color: rgba(255,122,26,0.28); }

.email-subject { font-weight: 600; font-size: 14.5px; color: var(--text); }
.email-detail { font-size: 13px; color: var(--text-muted); margin: 4px 0; }
.email-detail span { color: var(--text); }

.task-highlight {
  font-size: 12.5px;
  color: var(--warning);
  background: var(--warning-soft);
  border: 1px solid rgba(240, 180, 41, 0.25);
  padding: 7px 12px;
  border-radius: 8px;
  margin-top: 10px;
  display: inline-block;
  font-weight: 500;
}

/* ---------- States ---------- */
.placeholder {
  text-align: center;
  padding: 56px 24px;
  color: var(--text-subtle);
  font-size: 14px;
}
.processing {
  text-align: center;
  padding: 56px 24px;
  color: var(--text-muted);
  font-size: 14px;
}
.processing::after { content: ""; animation: dots 1.5s steps(3, end) infinite; }
@keyframes dots {
  0% { content: ""; } 33% { content: "."; } 66% { content: ".."; } 100% { content: "..."; }
}

.empty-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 48px 32px;
  text-align: center;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}
.empty-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.empty-card p { font-size: 14px; margin-top: 4px; }
.empty-card .muted { color: var(--text-subtle); font-size: 13px; margin-top: 12px; }

/* ---------- Stats row (Inbox) ---------- */
.stats-row { display: flex; gap: 14px; margin-bottom: 28px; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  flex: 1;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.stat-card:hover { border-color: var(--border-strong); background: var(--surface-2); }
.stat-value { font-size: 28px; font-weight: 700; color: var(--text); letter-spacing: -0.6px; }
.stat-label {
  font-size: 11px; color: var(--text-subtle);
  text-transform: uppercase; letter-spacing: 0.6px; margin-top: 4px; font-weight: 600;
}

/* ---------- Tasks page ---------- */
.task-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.task-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-sm);
}
.task-card:hover {
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.task-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.task-check-wrap {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  flex: 1;
  min-width: 0;
}

.task-who {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  letter-spacing: -0.1px;
  overflow-wrap: anywhere;
}

.task-row { display: flex; flex-direction: column; gap: 3px; }
.task-label {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.task-value { font-size: 13.5px; color: var(--text); }
.task-deadline-value { font-size: 13.5px; color: var(--warning); font-weight: 500; }
.task-no-deadline { font-size: 12.5px; color: var(--text-subtle); font-style: italic; }

.task-category {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--info-soft);
  color: var(--info);
  border: 1px solid rgba(90, 169, 255, 0.25);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.task-card-completed { background: var(--bg-elev); opacity: 0.75; }
.task-card-completed .task-who,
.task-card-completed .task-value,
.task-card-completed .task-deadline-value {
  text-decoration: line-through;
  color: var(--text-subtle);
}
.task-card-completed .task-category { opacity: 0.5; }

.task-note {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 2px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-strong);
}
.task-note-input {
  width: 100%;
  min-height: 60px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  resize: vertical;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.task-note-input:focus {
  outline: none;
  border-color: var(--brand);
  background: var(--surface-2);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.task-note-input::placeholder { color: var(--text-subtle); }

/* ---------- Checkbox ---------- */
.task-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--border-strong);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  background: var(--surface-muted);
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.task-checkbox:hover { border-color: var(--text-muted); }
.task-checkbox:checked {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 0 0 3px var(--success-soft);
}
.task-checkbox:checked::after {
  content: "";
  position: absolute;
  left: 6px; top: 2px;
  width: 5px; height: 10px;
  border: solid #0b0c0f;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ---------- Toggle switch ---------- */
.toggle-row, .sidebar-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  user-select: none;
}
.toggle-row:hover, .sidebar-toggle:hover { color: var(--text); }
.toggle-switch {
  width: 34px; height: 20px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  position: relative;
  transition: background 0.15s ease, border-color 0.15s ease;
  flex-shrink: 0;
}
.toggle-switch.on { background: var(--success); border-color: var(--success); }
.toggle-switch::after {
  content: "";
  width: 14px; height: 14px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px; left: 2px;
  transition: left 0.15s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}
.toggle-switch.on::after { left: 17px; }

/* ---------- Filter bar (Inbox) ---------- */
.filter-bar { display: flex; gap: 8px; margin-bottom: 24px; }
.filter-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}
.filter-btn:hover { border-color: var(--border-strong); color: var(--text); background: var(--surface-2); }
.filter-btn.active {
  background: var(--brand-soft);
  color: var(--brand-hover);
  border-color: rgba(59, 130, 246, 0.4);
}

/* ---------- Reports page ---------- */
.report-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 18px 22px;
  margin-bottom: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.report-controls label {
  font-size: 11px;
  color: var(--text-subtle);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.report-controls input[type="date"] {
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  background: var(--surface-muted);
  font-family: inherit;
  color-scheme: dark;
}
.report-controls input[type="date"]:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.report-quick-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}
.report-quick-btn:hover { border-color: var(--border-strong); color: var(--text); background: var(--surface-2); }

.report-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}
.report-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.report-stat:hover { border-color: var(--border-strong); background: var(--surface-2); }
.report-stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.8px;
}
.report-stat-value.green { color: var(--success); }
.report-stat-value.amber { color: var(--warning); }
.report-stat-label {
  font-size: 11px;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-top: 6px;
  font-weight: 600;
}

.report-subtitle {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin: 32px 0 12px;
}

.report-category-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.report-category-row:hover { border-color: var(--border-strong); background: var(--surface-2); }
.report-category-name {
  font-weight: 500;
  color: var(--text);
  text-transform: capitalize;
}
.report-category-counts { color: var(--text-subtle); font-size: 12px; }

.report-task-row {
  font-size: 13px;
  color: var(--text);
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}

.report-completed-row {
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}
.report-completed-task {
  font-size: 13px;
  color: var(--text-subtle);
  text-decoration: line-through;
}
.report-completed-note {
  font-size: 13px;
  color: var(--text);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-strong);
}
.report-note-label {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-right: 6px;
}

/* ---------- Account chip ---------- */
.account-chip {
  display: inline-flex;
  align-items: center;
  max-width: 240px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.account-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  margin-right: 8px;
  flex-shrink: 0;
}

/* ---------- Hero ---------- */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - 60px - 128px);
  gap: 22px;
  padding: 48px 24px;
  position: relative;
  /* Let the ambient glow spill out naturally */
  overflow: visible;
}

/* Large soft blue ambient glow — the main hero atmosphere */
.hero::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1100px;
  height: 1100px;
  max-width: 140vw;
  max-height: 140vh;
  background:
    radial-gradient(closest-side, rgba(59, 130, 246, 0.22) 0%, rgba(59, 130, 246, 0.10) 35%, transparent 72%);
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
}

/* Smaller warm orange accent glow — subtle, not dominant */
.hero::after {
  content: "";
  position: absolute;
  top: 55%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 520px;
  height: 520px;
  max-width: 80vw;
  background:
    radial-gradient(closest-side, rgba(255, 122, 26, 0.18) 0%, rgba(255, 122, 26, 0.06) 40%, transparent 75%);
  filter: blur(18px);
  pointer-events: none;
  z-index: 0;
}

.hero > * { position: relative; z-index: 2; }

/* Title: switched to solid light color (gradient + background-clip was
   cutting the descenders of y/g/p). Extra line-height + small vertical
   padding guarantee no clipping at any size. */
.hero-title {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -1.8px;
  color: #f5f6f9;
  max-width: 780px;
  line-height: 1.18;
  padding: 0.08em 0 0.14em;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}
.hero-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.6;
}
.hero-actions {
  margin-top: 18px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Floating "Powered by Sina" badge ---------- */
.powered-badge {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(20, 22, 28, 0.7);
  border: 1px solid var(--border);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  z-index: 40;
  transition: color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.powered-badge:hover {
  color: var(--text);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.powered-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ---------- Scrollbar (subtle, dark) ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-subtle); }

/* =========================================================
   Hero side task carousels (decorative, pure CSS)
   ========================================================= */

/* Container that frames the hero with two vertical card columns.
   The centered hero content (title, subtitle, CTA) lives between them. */
.hero-frame {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr minmax(520px, 760px) 1fr;
  align-items: stretch;
  gap: 24px;
  min-height: calc(100vh - 60px - 128px);
}

/* The side rails — fixed-height viewport with soft edge fade */
.hero-rail {
  position: relative;
  height: min(78vh, 640px);
  align-self: center;
  overflow: hidden;
  pointer-events: none;
  /* Fade the top and bottom so cards drift in/out softly */
  -webkit-mask-image: linear-gradient(180deg,
    transparent 0%, #000 14%, #000 86%, transparent 100%);
          mask-image: linear-gradient(180deg,
    transparent 0%, #000 14%, #000 86%, transparent 100%);
}

/* Subtle colored glow behind each rail */
.hero-rail::before {
  content: "";
  position: absolute;
  inset: 10% -10% 10% -10%;
  background: radial-gradient(closest-side,
    rgba(59, 130, 246, 0.18) 0%,
    rgba(59, 130, 246, 0.06) 45%,
    transparent 75%);
  filter: blur(22px);
  pointer-events: none;
  z-index: 0;
}
.hero-rail.right::before {
  background: radial-gradient(closest-side,
    rgba(255, 122, 26, 0.14) 0%,
    rgba(255, 122, 26, 0.05) 45%,
    transparent 75%);
}

/* The moving track — the same list repeated twice for a seamless loop */
.hero-rail-track {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 8px 14px;
  will-change: transform;
}

/* Left rail scrolls top -> bottom */
.hero-rail.left .hero-rail-track {
  animation: rail-scroll-down 38s linear infinite;
}

/* Right rail scrolls bottom -> top */
.hero-rail.right .hero-rail-track {
  animation: rail-scroll-up 42s linear infinite;
}

/* The loop moves exactly one "half" (the duplicated content's height)
   so it appears endless. Using -50% works because the track contains
   two identical copies stacked vertically. */
@keyframes rail-scroll-up {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}
@keyframes rail-scroll-down {
  0%   { transform: translateY(-50%); }
  100% { transform: translateY(0); }
}

/* Respect reduced-motion users */
@media (prefers-reduced-motion: reduce) {
  .hero-rail .hero-rail-track { animation: none; }
}

/* The sample cards themselves — mimic real Sina task cards but simpler */
.demo-task {
  background: linear-gradient(180deg, rgba(26, 29, 37, 0.9), rgba(20, 22, 28, 0.9));
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.demo-task-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.demo-task-who {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.demo-task-tag {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-hover);
  border: 1px solid rgba(59, 130, 246, 0.25);
  flex-shrink: 0;
}
.demo-task-tag.vendor { background: var(--warning-soft); color: var(--warning); border-color: rgba(240,180,41,0.25); }
.demo-task-tag.owner  { background: var(--accent-soft);  color: var(--accent);  border-color: rgba(255,122,26,0.28); }
.demo-task-tag.board  { background: var(--info-soft);    color: var(--info);    border-color: rgba(90,169,255,0.25); }
.demo-task-tag.ins    { background: var(--success-soft); color: var(--success); border-color: rgba(62,207,142,0.25); }

.demo-task-line {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.demo-task-meta {
  font-size: 11px;
  color: var(--text-subtle);
  display: flex;
  gap: 8px;
  align-items: center;
}
.demo-task-meta .dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--text-subtle);
}

/* Hide side rails on narrow screens — keep the centered content clean */
@media (max-width: 1100px) {
  .hero-frame { grid-template-columns: 1fr; }
  .hero-rail { display: none; }
}


.btn-google {
  background: #fff;
  color: #1f1f1f;
  border: 1px solid #dadce0;
}
.btn-google:hover { background: #f6f9fe; }