/* ============================================================
   CarbonTrack — app.css
   Dashboard shell: sidebar, topbar, stats, panels, tables, chart
   ============================================================ */

.ct-app-shell { display: flex; min-height: 100vh; background: var(--paper); }

/* ---------- Sidebar ---------- */
.ct-sidebar {
    width: 248px; flex-shrink: 0; background: var(--ink-950); color: var(--paper);
    display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0;
    z-index: 200; transition: transform 0.25s ease;
}
.ct-sidebar-brand { display: flex; align-items: center; gap: 9px; padding: 24px 22px; border-bottom: 1px solid var(--ink-800); }
.ct-sidebar-brand .ct-brand-mark { color: var(--signal-amber); font-size: 1.25rem; }
.ct-sidebar-brand .ct-brand-name { color: var(--paper); font-size: 1.05rem; }
.ct-sidebar-company { padding: 16px 22px; border-bottom: 1px solid var(--ink-800); }
.ct-company-name { font-size: 0.9rem; font-weight: 600; color: var(--paper); margin-bottom: 2px; }
.ct-company-sector { font-size: 0.76rem; color: var(--ink-400); text-transform: uppercase; letter-spacing: 0.03em; }

.ct-sidebar-nav { flex: 1; padding: 18px 12px; display: flex; flex-direction: column; gap: 2px; }
.ct-sidebar-nav a {
    display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: var(--radius-sm);
    color: var(--ink-300); font-size: 0.9rem; font-weight: 500; transition: all 0.15s ease;
}
.ct-sidebar-nav a .ct-icon { font-size: 1.05rem; width: 20px; text-align: center; }
.ct-sidebar-nav a:hover { background: var(--ink-900); color: var(--paper); }
.ct-sidebar-nav a.active { background: var(--ink-800); color: var(--signal-amber); }

.ct-sidebar-footer { padding: 16px 18px; border-top: 1px solid var(--ink-800); }
.ct-sidebar-footer .ct-lang-switcher { margin-bottom: 14px; }
.ct-sidebar-user { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.ct-avatar {
    width: 34px; height: 34px; border-radius: 50%; background: var(--signal-amber); color: var(--ink-950);
    display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; flex-shrink: 0;
}
.ct-user-name { font-size: 0.85rem; color: var(--paper); font-weight: 600; }
.ct-logout { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--ink-300); padding: 8px 0; }
.ct-logout:hover { color: var(--alert-red); }

/* ---------- Main ---------- */
.ct-main { margin-left: 248px; flex: 1; width: calc(100% - 248px); min-width: 0; }
.ct-topbar { display: none; align-items: center; justify-content: space-between; padding: 14px 18px; background: var(--ink-950); color: var(--paper); position: sticky; top: 0; z-index: 150; }
.ct-topbar .ct-brand-name { color: var(--paper); }
.ct-topbar .ct-brand-mark { color: var(--signal-amber); }
.ct-burger { background: none; border: none; color: var(--paper); font-size: 1.4rem; cursor: pointer; }
.ct-content { padding: 36px 40px 60px; }
.ct-overlay { display: none; position: fixed; inset: 0; background: rgba(14,17,23,0.5); z-index: 190; }
.ct-overlay.open { display: block; }

/* ---------- Page header ---------- */
.ct-page-header { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 16px; margin-bottom: 32px; }
.ct-page-header h1 { font-size: 1.65rem; margin-bottom: 6px; }
.ct-sub { color: var(--ink-400); font-size: 0.93rem; }

/* ---------- Cards / panels ---------- */
.ct-card { background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-card); border: 1px solid var(--paper-dim); }
.ct-panel { padding: 26px 28px; margin-bottom: 24px; }
.ct-panel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.ct-panel-head h2 { font-size: 1.1rem; }
.ct-link { font-size: 0.85rem; font-weight: 600; color: var(--ink-400); }
.ct-link:hover { color: var(--ink-950); }

/* ---------- Stats ---------- */
.ct-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 36px; }
.ct-stat { padding: 22px 24px; }
.ct-stat-label { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-400); font-weight: 600; margin-bottom: 10px; }
.ct-stat-value { font-family: var(--font-mono); font-size: 1.7rem; font-weight: 600; color: var(--ink-950); margin-bottom: 6px; }
.ct-stat-delta { font-size: 0.8rem; font-weight: 600; }
.ct-delta-good { color: var(--slate-teal); }
.ct-delta-bad { color: var(--alert-red); }
.ct-text-dim { color: var(--ink-400); }
.ct-mono { font-family: var(--font-mono); font-size: 0.85rem; }

/* ---------- Status chips ---------- */
.ct-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 99px; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.ct-chip-good { background: rgba(76,140,130,0.12); color: var(--slate-teal); }
.ct-chip-warn { background: rgba(232,163,61,0.15); color: var(--signal-amber-dim); }
.ct-chip-bad { background: rgba(194,74,63,0.12); color: var(--alert-red); }
.ct-chip-neutral { background: var(--ink-100); color: var(--ink-400); }

/* ---------- Chart ---------- */
.ct-chart { display: flex; align-items: flex-end; gap: 16px; height: 200px; }
.ct-bar-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; height: 100%; justify-content: flex-end; }
.ct-bar { width: 100%; background: var(--slate-teal); border-radius: 4px 4px 0 0; opacity: 0.85; min-height: 8px; transition: height 0.4s ease; }
.ct-bar-warn { background: var(--signal-amber); }
.ct-bar-label { font-size: 0.72rem; color: var(--ink-400); }

/* ---------- Table ---------- */
.ct-table-scroll { overflow-x: auto; }
.ct-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.ct-table th { text-align: left; padding: 11px 14px; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--ink-400); border-bottom: 1.5px solid var(--paper-dim); font-weight: 600; white-space: nowrap; }
.ct-table td { padding: 13px 14px; border-bottom: 1px solid var(--paper-dim); color: var(--ink-800); white-space: nowrap; }
.ct-table tr:last-child td { border-bottom: none; }

/* ---------- Form sections (data entry) ---------- */
.ct-form-section { margin-bottom: 30px; }
.ct-form-section-title { font-size: 0.95rem; font-weight: 700; color: var(--ink-950); margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.ct-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--signal-amber); display: inline-block; }
.ct-form-section-sub { font-size: 0.83rem; color: var(--ink-400); margin-bottom: 18px; }
.ct-form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 22px; }

/* ---------- Calc result ---------- */
.ct-calc-result { background: var(--ink-950); border-radius: var(--radius-md); padding: 24px 28px; color: var(--paper); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; margin-bottom: 24px; }
.ct-calc-label { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-400); margin-bottom: 6px; }
.ct-calc-value { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 600; color: var(--paper); }
.ct-calc-value.ct-accent { color: var(--signal-amber); }

/* ---------- Empty state ---------- */
.ct-empty { text-align: center; padding: 60px 20px; color: var(--ink-400); }
.ct-empty-icon { font-size: 2.2rem; margin-bottom: 14px; }
.ct-empty p { margin-bottom: 18px; font-size: 0.95rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) { .ct-stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 880px) {
    .ct-sidebar { transform: translateX(-100%); }
    .ct-sidebar.open { transform: translateX(0); }
    .ct-main { margin-left: 0; width: 100%; }
    .ct-topbar { display: flex; }
    .ct-content { padding: 24px 18px 50px; }
    .ct-form-grid { grid-template-columns: 1fr; }
    .ct-calc-result { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 540px) {
    .ct-stats-grid { grid-template-columns: 1fr; }
    .ct-page-header h1 { font-size: 1.35rem; }
}