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

:root{
  color-scheme:light;
  --bg:#f3f5f8; /* Light gray background */
  --panel:#fff;
  --line:#e2e8f0;
  --ink:#0f172a; /* Darker Slate */
  --mute:#475569; /* Darker gray for labels */
  --pri:#2563eb; /* Modern Blue */
  --pri2:#eff6ff;
  --ok:#10b981; /* Soft green */
  --bad:#ef4444; /* Soft red */
  --warn:#f59e0b; /* Soft yellow */
  --card:#fff;
  --fh:'Inter',sans-serif;
  --fb:'Inter',sans-serif;
  
  /* Font Sizes Variables */
  --fs:15px;   /* Normal Text (Body) */
  --hfs:22px;  /* Main Heading (H1, H2) */
  --sfs:18px;  /* Sub Heading / Card Titles (H3) */
  --lfs:13px;  /* Labels & Small Text */
  
  --cols:2;
  
  /* Headings variables */
  --head-case: none; /* none = regular, uppercase = CAPITAL */
  --head-color: #000000; /* Pure Black Headings */
  --th-color: #334155; /* Table headings ka dark color */
  
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--fb);font-size:var(--fs);-webkit-font-smoothing:antialiased}

/* Main Page Headings (Dashboard, Users, Settings) */
h1,h2,.brand{font-family:var(--fh);margin:0;font-weight:600;letter-spacing:-0.02em;color:var(--head-color);text-transform:var(--head-case);font-size:var(--hfs, 22px)}

/* Card ke andar ki Headings (Last 6 months sales, Recent sales) */
h3{font-family:var(--fh);margin:0;font-weight:600;letter-spacing:-0.02em;color:var(--head-color);text-transform:var(--head-case);font-size:var(--sfs, 18px)}

button,input,select,textarea{font-family:inherit;font-size:calc(var(--fs) - 1px)}

/* Buttons */
.btn{background:var(--pri);color:#fff;border:0;border-radius:10px;padding:10px 18px;cursor:pointer;font-weight:500;text-decoration:none;display:inline-block;text-align:center;transition:0.2s}
.btn.sec{background:var(--pri2);color:var(--pri)}
.btn.red{background:color-mix(in srgb,var(--bad) 10%,transparent);color:var(--bad)}
.btn.sm{padding:6px 12px;font-size:calc(var(--fs) - 2px);border-radius:8px}

/* Inputs */
input,select,textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);outline:none;transition:border 0.2s}
input:focus,select:focus,textarea:focus{border-color:var(--pri)}
label{display:block;font-size:var(--lfs);color:var(--mute);margin:12px 0 6px;font-weight:600}

/* Auth Login */
.login{min-height:100vh;display:grid;place-items:center;padding:16px;background:var(--bg)}
.login .card{width:100%;max-width:380px;box-shadow:0 10px 25px rgba(0,0,0,.05)}

/* App Layout */
.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.side{background:var(--card);border-right:1px solid var(--line);padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:6px}
.brand{font-size:20px;color:var(--pri);padding:4px 10px 20px;font-weight:700}
.nav{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:none;border:0;padding:12px;border-radius:10px;cursor:pointer;color:#2d3748;font-weight:500;text-decoration:none;transition:0.2s;font-size:var(--fs)}
.nav.on{background:var(--pri2);color:var(--pri);font-weight:600}
.nav:hover:not(.on){background:var(--bg);color:var(--ink)}
.who{margin-top:auto;font-size:var(--lfs);color:var(--mute);padding:14px;border-top:1px solid var(--line)}
.main{padding:24px;min-width:0}

/* Headers & Cards */
.top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 2px 10px rgba(0,0,0,0.02)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:20px}

/* Stats (Dashboard Style) */
.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 2px 8px rgba(0,0,0,0.02)}
.stat small{color:var(--mute);display:block;font-size:var(--lfs);font-weight:500;margin-bottom:6px;text-transform:var(--head-case)}
.stat b{font-family:var(--fh);font-size:var(--hfs);font-weight:700}

/* Tables */
.tw{overflow-x:auto;background:var(--card);border-radius:16px;border:1px solid var(--line);box-shadow:0 2px 10px rgba(0,0,0,0.02)}
table{border-collapse:collapse;width:100%;min-width:640px}
th,td{padding:16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;font-size:calc(var(--fs) - 1px)}
th{background:#f8fafc;color:var(--th-color);font-size:var(--lfs);font-weight:600;text-transform:var(--head-case);letter-spacing:.05em}
tr:last-child td{border-bottom:none}

/* Tags */
.tag{padding:4px 10px;border-radius:99px;font-size:var(--lfs);font-weight:600;display:inline-block}
.tag.ok{background:#d1fae5;color:#065f46}
.tag.warn{background:#fef3c7;color:#92400e}
.tag.bad{background:#fee2e2;color:#991b1b}

/* Modals */
.ov{position:fixed;inset:0;background:rgba(15,23,42,.5);backdrop-filter:blur(2px);display:grid;place-items:center;padding:16px;z-index:50}
.md{background:var(--card);border-radius:16px;padding:24px;width:100%;max-width:460px;max-height:90vh;overflow:auto;box-shadow:0 20px 40px rgba(0,0,0,0.1)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* Fixed Mobile Top Bar */
.mbar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--card);position:fixed;top:0;left:0;right:0;z-index:100}
.mbar b{font-family:var(--fh);color:var(--pri);font-size:18px;margin:0}
.burger{background:var(--bg);color:var(--pri);border:0;border-radius:10px;width:42px;height:42px;font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.scrim{display:none;position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:35}
.scrim.open{display:block}

/* Responsive */
@media(max-width:800px){
  .app{grid-template-columns:1fr;padding-top:67px}
  .side{position:fixed;left:0;top:0;bottom:0;height:auto;width:280px;max-width:85vw;z-index:40;transform:translateX(-100%);transition:transform .3s;padding-top:calc(20px + env(safe-area-inset-top,0px));overflow-y:auto}
  .side.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.15)}
  .main{padding:16px}
}
@media(min-width:801px){
  .app{padding-top:67px}
  .side{top:67px;height:calc(100vh - 67px)}
}