/* ===========================================================================
   theme.css — iUseFlow Design System
   Professional Swiss SaaS look (Linear / Notion / Asana / ClickUp / Monday /
   HubSpot influence): light mode default, dark mode via [data-theme="dark"],
   generous type scale, soft elevation, restrained accent color.
   Shared across every page — index.html, portal.html, fahrer.html, all
   builder pages. Toggle logic lives in theme.js.
=========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  /* ---- Brand accent: Swiss red, used sparingly for primary actions ---- */
  --accent:#d8232a;
  --accent-hover:#b81d23;
  --accent-active:#9c191e;
  --accent-soft:#fdeceb;
  --accent-contrast:#ffffff;

  /* ---- Surfaces ---- */
  --surface-page:#f6f7f9;
  --surface:#ffffff;
  --surface-2:#f1f2f5;
  --surface-3:#e8eaee;
  --border:#e4e6ec;
  --border-strong:#d3d6de;

  /* ---- Text ---- */
  --text:#171a21;
  --text-muted:#5b6172;
  --text-faint:#9aa1b2;
  --text-on-accent:#ffffff;

  /* ---- Semantic ---- */
  --success:#178a4c;
  --success-soft:#e8f8ee;
  --warning:#b5680a;
  --warning-soft:#fdf1de;
  --danger:#c22437;
  --danger-soft:#fdeaec;
  --info:#1d5fd1;
  --info-soft:#eaf1fd;

  /* ---- Elevation ---- */
  --shadow-sm:0 1px 2px rgba(16,24,40,.06), 0 1px 1px rgba(16,24,40,.04);
  --shadow-md:0 4px 10px rgba(16,24,40,.07), 0 2px 4px rgba(16,24,40,.05);
  --shadow-lg:0 16px 36px rgba(16,24,40,.12), 0 4px 10px rgba(16,24,40,.06);
  --shadow-focus:0 0 0 4px rgba(216,35,42,.16);

  /* ---- Radius ---- */
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:20px; --r-pill:999px;

  /* ---- Spacing ---- */
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:20px;
  --sp-6:24px; --sp-7:32px; --sp-8:40px; --sp-9:48px; --sp-10:64px;

  /* ---- Type scale (base 16px — "larger fonts everywhere") ---- */
  --fs-xs:13px; --fs-sm:14.5px; --fs-base:16px; --fs-md:17px;
  --fs-lg:20px; --fs-xl:24px; --fs-2xl:30px; --fs-3xl:38px;
  --font-ui:'Inter',-apple-system,'Segoe UI',Arial,sans-serif;
  --font-mono:'IBM Plex Mono','SF Mono',Consolas,monospace;

  color-scheme: light;
}

[data-theme="dark"]{
  --accent:#ff5a5f;
  --accent-hover:#ff7377;
  --accent-active:#e64d52;
  --accent-soft:rgba(255,90,95,.14);
  --accent-contrast:#1a0506;

  --surface-page:#0e1015;
  --surface:#161922;
  --surface-2:#1e222c;
  --surface-3:#272c38;
  --border:#2b3040;
  --border-strong:#3a4055;

  --text:#eef0f5;
  --text-muted:#a3aabd;
  --text-faint:#6d7690;
  --text-on-accent:#1a0506;

  --success:#3ecb7e;
  --success-soft:rgba(62,203,126,.14);
  --warning:#f0a83c;
  --warning-soft:rgba(240,168,60,.14);
  --danger:#ff6b78;
  --danger-soft:rgba(255,107,120,.14);
  --info:#5b9bf5;
  --info-soft:rgba(91,155,245,.14);

  --shadow-sm:0 1px 2px rgba(0,0,0,.3);
  --shadow-md:0 6px 16px rgba(0,0,0,.35);
  --shadow-lg:0 20px 44px rgba(0,0,0,.45);
  --shadow-focus:0 0 0 4px rgba(255,90,95,.22);

  color-scheme: dark;
}

/* ===================== BASE ===================== */
html{-webkit-text-size-adjust:100%;}
body.ds-body{
  margin:0; background:var(--surface-page); color:var(--text);
  font-family:var(--font-ui); font-size:var(--fs-base); line-height:1.5;
  -webkit-font-smoothing:antialiased; transition:background .15s ease, color .15s ease;
}
.ds-mono{font-family:var(--font-mono);}
*{box-sizing:border-box;}

/* ===================== APP SHELL: SIDEBAR + TOPBAR ===================== */
.ds-shell{display:flex; min-height:100vh;}

.ds-sidebar{
  width:248px; flex-shrink:0; background:var(--surface); border-right:1px solid var(--border);
  display:flex; flex-direction:column; position:sticky; top:0; height:100vh; z-index:40;
  transition:transform .2s ease;
}
.ds-sidebar-brand{
  display:flex; align-items:center; gap:10px; padding:20px 18px 16px; border-bottom:1px solid var(--border);
}
.ds-sidebar-mark{
  width:34px; height:34px; border-radius:var(--r-md); background:var(--accent); color:var(--text-on-accent);
  display:flex; align-items:center; justify-content:center; font-weight:800; font-size:15px; flex-shrink:0;
}
.ds-sidebar-brand-text{line-height:1.25;}
.ds-sidebar-brand-text b{display:block; font-size:var(--fs-md); font-weight:800; letter-spacing:-.01em;}
.ds-sidebar-brand-text span{display:block; font-size:11.5px; color:var(--text-faint); text-transform:uppercase; letter-spacing:.06em;}

.ds-nav{flex:1; overflow-y:auto; padding:14px 12px;}
.ds-nav-label{font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:.07em; color:var(--text-faint); margin:16px 10px 6px;}
.ds-nav-label:first-child{margin-top:2px;}
.ds-nav-link{
  display:flex; align-items:center; gap:11px; padding:10px 12px; border-radius:var(--r-md); text-decoration:none;
  color:var(--text-muted); font-size:var(--fs-sm); font-weight:600; margin-bottom:2px; transition:background .12s, color .12s;
}
.ds-nav-link:hover{background:var(--surface-2); color:var(--text);}
.ds-nav-link.active{background:var(--accent-soft); color:var(--accent);}
.ds-nav-link .ico{font-size:16px; width:20px; text-align:center; flex-shrink:0;}

.ds-sidebar-foot{padding:14px 16px; border-top:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; gap:8px;}

.ds-main{flex:1; min-width:0; display:flex; flex-direction:column;}

.ds-topbar{
  position:sticky; top:0; z-index:30; background:var(--surface); border-bottom:1px solid var(--border);
  padding:14px 24px; display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
}
.ds-topbar h1{margin:0; font-size:var(--fs-xl); font-weight:800; letter-spacing:-.015em;}
.ds-topbar .ds-sub{margin:2px 0 0; color:var(--text-muted); font-size:var(--fs-sm);}
.ds-topbar-actions{display:flex; align-items:center; gap:10px;}

.ds-content{padding:24px; max-width:1280px; width:100%; margin:0 auto;}

.ds-hamburger{
  display:none; width:38px; height:38px; border-radius:var(--r-md); border:1px solid var(--border);
  background:var(--surface); color:var(--text); font-size:18px; cursor:pointer; align-items:center; justify-content:center;
}
.ds-sidebar-backdrop{display:none;}

/* ===================== THEME TOGGLE ===================== */
.ds-theme-toggle{
  width:38px; height:38px; border-radius:var(--r-md); border:1px solid var(--border); background:var(--surface-2);
  color:var(--text); font-size:17px; cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition:background .12s, transform .1s;
}
.ds-theme-toggle:hover{background:var(--surface-3);}
.ds-theme-toggle:active{transform:scale(.93);}

/* ===================== BUTTONS ===================== */
.ds-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px; font-family:var(--font-ui);
  border:none; border-radius:var(--r-md); font-weight:700; font-size:var(--fs-sm); cursor:pointer;
  padding:11px 18px; transition:background .12s, transform .08s, box-shadow .12s; white-space:nowrap;
}
.ds-btn:active{transform:scale(.98);}
.ds-btn:disabled{opacity:.45; cursor:not-allowed; transform:none;}
.ds-btn-primary{background:var(--accent); color:var(--text-on-accent); box-shadow:var(--shadow-sm);}
.ds-btn-primary:hover:not(:disabled){background:var(--accent-hover);}
.ds-btn-secondary{background:var(--surface-2); color:var(--text); border:1px solid var(--border);}
.ds-btn-secondary:hover:not(:disabled){background:var(--surface-3);}
.ds-btn-ghost{background:transparent; color:var(--text-muted);}
.ds-btn-ghost:hover:not(:disabled){background:var(--surface-2); color:var(--text);}
.ds-btn-danger{background:var(--danger-soft); color:var(--danger);}
.ds-btn-danger:hover:not(:disabled){background:var(--danger); color:#fff;}
.ds-btn-success{background:var(--success-soft); color:var(--success);}
.ds-btn-success:hover:not(:disabled){background:var(--success); color:#fff;}
.ds-btn-sm{padding:7px 13px; font-size:var(--fs-xs); border-radius:var(--r-sm);}
.ds-btn-lg{padding:14px 24px; font-size:var(--fs-md); border-radius:var(--r-lg);}
.ds-btn-block{width:100%;}
.ds-btn-icon{padding:9px; width:38px; height:38px;}

/* ===================== CARDS ===================== */
.ds-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm); overflow:hidden;
}
.ds-card-head{
  padding:18px 22px; border-bottom:1px solid var(--border); display:flex; align-items:center;
  justify-content:space-between; gap:12px; flex-wrap:wrap;
}
.ds-card-head h2, .ds-card-head h3{margin:0; font-size:var(--fs-md); font-weight:700; letter-spacing:-.01em;}
.ds-card-head .ds-card-sub{margin:2px 0 0; font-size:var(--fs-xs); color:var(--text-muted); font-weight:500;}
.ds-card-body{padding:22px;}
.ds-card-flush .ds-card-body{padding:0;}

/* ===================== KPI / STAT CARDS ===================== */
.ds-kpi-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:14px; margin-bottom:24px;}
.ds-kpi{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--r-lg); padding:18px 20px;
  box-shadow:var(--shadow-sm); display:flex; flex-direction:column; gap:6px;
}
.ds-kpi-top{display:flex; align-items:center; justify-content:space-between;}
.ds-kpi-label{font-size:12.5px; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:.05em;}
.ds-kpi-icon{width:32px; height:32px; border-radius:var(--r-sm); display:flex; align-items:center; justify-content:center; font-size:15px;}
.ds-kpi-value{font-size:var(--fs-2xl); font-weight:800; letter-spacing:-.02em; font-family:var(--font-mono);}
.ds-kpi-value.warn{color:var(--danger);}
.ds-kpi-foot{font-size:12px; color:var(--text-faint);}

/* ===================== BADGES / PILLS ===================== */
.ds-badge{
  display:inline-flex; align-items:center; gap:5px; padding:4px 11px; border-radius:var(--r-pill);
  font-size:12px; font-weight:700; background:var(--surface-2); color:var(--text-muted);
}
.ds-badge-accent{background:var(--accent-soft); color:var(--accent);}
.ds-badge-success{background:var(--success-soft); color:var(--success);}
.ds-badge-warning{background:var(--warning-soft); color:var(--warning);}
.ds-badge-danger{background:var(--danger-soft); color:var(--danger);}
.ds-badge-info{background:var(--info-soft); color:var(--info);}

/* ===================== FORM CONTROLS ===================== */
.ds-label{display:block; font-size:12.5px; font-weight:700; color:var(--text-muted); margin:0 0 6px; text-transform:uppercase; letter-spacing:.03em;}
.ds-input, .ds-select, .ds-textarea{
  width:100%; background:var(--surface); border:1.5px solid var(--border); color:var(--text);
  border-radius:var(--r-md); padding:11px 14px; font-size:var(--fs-base); font-family:var(--font-ui);
  transition:border-color .12s, box-shadow .12s;
}
.ds-textarea{min-height:110px; resize:vertical;}
.ds-input:focus, .ds-select:focus, .ds-textarea:focus{outline:none; border-color:var(--accent); box-shadow:var(--shadow-focus);}
.ds-field{margin-bottom:16px;}
.ds-hint{font-size:12.5px; color:var(--text-faint); margin-top:5px;}

/* ===================== TABLES ===================== */
.ds-table-wrap{overflow-x:auto; border-radius:var(--r-md); border:1px solid var(--border);}
.ds-table{width:100%; border-collapse:collapse; font-size:var(--fs-sm); background:var(--surface);}
.ds-table th{
  text-align:left; padding:12px 14px; background:var(--surface-2); color:var(--text-muted); font-weight:700;
  font-size:11.5px; text-transform:uppercase; letter-spacing:.04em; border-bottom:1px solid var(--border); white-space:nowrap;
}
.ds-table td{padding:12px 14px; border-bottom:1px solid var(--border); vertical-align:middle;}
.ds-table tr:last-child td{border-bottom:none;}
.ds-table tr:hover td{background:var(--surface-2);}

/* ===================== EMPTY STATES ===================== */
.ds-empty{padding:48px 24px; text-align:center; color:var(--text-faint);}
.ds-empty-icon{font-size:34px; margin-bottom:10px;}
.ds-empty-title{font-size:var(--fs-md); font-weight:700; color:var(--text-muted); margin-bottom:4px;}
.ds-empty-text{font-size:var(--fs-sm);}

/* ===================== TOAST / STATUS MESSAGES ===================== */
.ds-status{font-size:var(--fs-sm); margin-top:12px; padding:11px 15px; border-radius:var(--r-md); display:none;}
.ds-status.show{display:block;}
.ds-status.ok{background:var(--success-soft); color:var(--success);}
.ds-status.err{background:var(--danger-soft); color:var(--danger);}
.ds-status.info{background:var(--info-soft); color:var(--info);}

/* ===================== SCROLLBAR (subtle, cross-browser best-effort) ===================== */
.ds-nav::-webkit-scrollbar, .ds-content::-webkit-scrollbar{width:8px;}
.ds-nav::-webkit-scrollbar-thumb{background:var(--border-strong); border-radius:99px;}

/* ===================== RESPONSIVE: MOBILE-FIRST SHELL ===================== */
@media (max-width: 900px){
  .ds-sidebar{
    position:fixed; left:0; top:0; height:100vh; transform:translateX(-100%); box-shadow:var(--shadow-lg);
  }
  .ds-sidebar.open{transform:translateX(0);}
  .ds-sidebar-backdrop{
    display:none; position:fixed; inset:0; background:rgba(10,12,16,.45); z-index:39;
  }
  .ds-sidebar-backdrop.open{display:block;}
  .ds-hamburger{display:flex;}
  .ds-content{padding:16px;}
  .ds-topbar{padding:12px 16px;}
  .ds-topbar h1{font-size:var(--fs-lg);}
  .ds-kpi-grid{grid-template-columns:repeat(2,1fr); gap:10px;}
  .ds-kpi{padding:14px 16px;}
  .ds-kpi-value{font-size:var(--fs-xl);}
}
@media (max-width: 480px){
  .ds-kpi-grid{grid-template-columns:1fr 1fr;}
  .ds-card-body{padding:16px;}
  .ds-card-head{padding:14px 16px;}
}