:root{
  --bg:#f6f8fb; --card:#ffffff; --muted:#6b7280; --accent:#0b7a4d; --accent-2:#0f6efd; --glass: rgba(11,122,77,0.06);
  --text:#0f1724; --success:#0b7a4d; --danger:#d14343;
}
*{box-sizing:border-box}
html,body{height:100%}
body{font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial; margin:0; background:var(--bg); color:var(--text); -webkit-font-smoothing:antialiased}
.site-header{position:sticky;top:0;background:linear-gradient(180deg,rgba(255,255,255,0.9),rgba(255,255,255,0.6));backdrop-filter: blur(6px);box-shadow:0 1px 0 rgba(16,24,40,0.04);z-index:40}
.navbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 20px;max-width:1200px;margin:0 auto}
.brand{font-weight:700;color:var(--accent)}
.nav-links{display:flex;gap:14px;list-style:none;margin:0;padding:0;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:8px;font-weight:600;font-size:14px}
.nav-links a.active{color:var(--accent);font-weight:700;text-decoration:underline}
.nav-links a:hover{background:transparent;color:var(--accent);text-decoration:underline}
.actions button{background:none;border:1px solid rgba(0,0,0,0.06);padding:6px 10px;border-radius:6px;cursor:pointer}
#loginBtn{background:var(--accent);color:#fff;border:none;padding:8px 14px;font-weight:600}

/* mobile menu button */
.mobile-menu{display:none;background:rgba(0,0,0,0.05);border:1px solid rgba(0,0,0,0.1);color:var(--muted);font-size:20px;padding:6px 8px;min-height:44px;min-width:44px;border-radius:6px}


.hero{padding:56px 20px;border-radius:12px;margin:18px 0;position:relative;overflow:hidden}
.hero{background-image:linear-gradient(180deg, rgba(6,21,37,0.55), rgba(6,21,37,0.38)), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?auto=format&fit=crop&w=1650&q=80');background-size:cover;background-position:center;color:#fff}
.hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 360px;gap:28px;align-items:center}
.hero h1{font-size:2.25rem;margin:0 0 8px;line-height:1.05;letter-spacing:-0.2px}
.hero p{color:rgba(255,255,255,0.85);margin:0 0 18px;font-size:1rem}
.cta{display:inline-block;background:linear-gradient(90deg,var(--accent),#3da1ff);color:#fff;padding:12px 18px;border-radius:10px;text-decoration:none;box-shadow:0 8px 24px rgba(15,110,253,0.12)}
.hero-card{background:linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));padding:18px;border-radius:12px;box-shadow:0 10px 30px rgba(2,6,23,0.25);backdrop-filter: blur(6px);border:1px solid rgba(255,255,255,0.05)}

.section{max-width:1200px;margin:24px auto;padding:0 20px}
.section h2{margin-bottom:12px}
.grid{display:grid;grid-template-columns:360px 1fr;gap:16px}
.card{background:var(--card);padding:18px;border-radius:12px;box-shadow:0 10px 30px rgba(2,6,23,0.06)}
.form-card input{width:100%;padding:8px;border:1px solid #e6e9ef;border-radius:6px;min-height:44px}
.form-card label{display:block;margin-bottom:8px;color:var(--muted);font-size:14px}
.row{display:flex;gap:12px}
.row label{flex:1}
.buttons{display:flex;gap:8px;align-items:center}
button{background:var(--accent);color:#fff;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;min-height:44px}
button.alt{background:#fff;color:var(--accent);border:1px solid rgba(15,110,253,0.12)}

.result-card .metrics{display:flex;gap:14px;align-items:flex-start;margin-bottom:14px;flex-wrap:wrap}
.metrics > div{background:linear-gradient(180deg,rgba(0,0,0,0.02),transparent);padding:12px;border-radius:10px;min-width:160px}
.metrics small{color:var(--muted);font-weight:600}
.big{font-size:1.25rem;font-weight:800;margin-top:8px}
.chart-wrap{background:linear-gradient(180deg,rgba(15,110,253,0.03),transparent);padding:10px;border-radius:8px}
.chart-row{display:flex;gap:12px;margin-top:12px}
.chart-row canvas{flex:1}
.result-actions{display:flex;gap:8px;margin-top:12px}

.planner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.planner-grid .card{display:flex;flex-direction:column;gap:10px}
.card-image{width:100%;height:110px;object-fit:cover;border-radius:8px}
.metric.small{margin-top:10px}

.inflation-table{margin-top:12px;max-height:220px;overflow:auto}
.inflation-table table{width:100%;border-collapse:collapse}
.inflation-table th,.inflation-table td{padding:8px;border-bottom:1px solid #f1f3f7;text-align:right}
.inflation-table th{text-align:left}

/* tables generated by SIP calculator */
.result-table{margin-top:12px;max-height:240px;overflow:auto;width:100%;border-collapse:collapse}
.result-table th,.result-table td{padding:8px;border-bottom:1px solid #f1f3f7;text-align:right}
.result-table th{text-align:left}

.site-footer{padding:18px 20px;text-align:center;color:var(--muted)}

/* responsive */
@media(max-width:768px){
  .hero-inner{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr}
  .planner-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .brand{font-size:18px}
  .mobile-menu{display:inline-block}
  .navbar.nav-open{position:relative}
  .navbar.nav-open .nav-links{display:flex;position:absolute;right:20px;top:64px;flex-direction:column;background:var(--card);padding:12px;border-radius:10px;box-shadow:0 12px 40px rgba(2,6,23,0.12);min-width:200px}
  .navbar.nav-open .nav-links li{margin:6px 0}
  .navbar.nav-open .nav-links a{min-height:44px;display:flex;align-items:center;padding:10px 12px}
}

@media(max-width:768px){
  .hero{padding:40px 16px}
  .hero h1{font-size:1.875rem}
  .hero p{font-size:0.95rem}
  .section{padding:0 16px}
  .card{padding:16px}
  .navbar{padding:10px 16px}
  .actions button{padding:8px 12px}
  .cta{padding:14px 20px}
  .metrics > div{min-width:140px}
}

@media(max-width:480px){
  .hero h1{font-size:1.5rem}
  .hero p{font-size:0.9rem}
  .section h2{font-size:1.25rem}
  .card h3{font-size:1rem}
  .navbar{flex-wrap:wrap;gap:10px}
  .brand{font-size:16px}
  .actions{display:flex;gap:6px}
  .actions button{font-size:14px;padding:6px 10px}
  .cta{font-size:14px;padding:12px 16px}
  .metrics{display:flex;flex-direction:column;gap:10px}
  .metrics > div{min-width:unset;width:100%}
  .chart-row{flex-direction:column}
  .chart-row canvas{height:200px}
  .result-actions{flex-direction:column}
  .inflation-table{max-height:150px}
  .result-table{max-height:150px}
  .row{flex-direction:column}
}

/* dark mode */
body.dark{--bg:#0b1220;--card:#071426;--muted:#9aa6b2;--text:#e6eef6;--glass:rgba(255,255,255,0.03);--accent:#66b2ff}

/* tooltips simple */
.tooltip{position:relative}
.tooltip:hover::after{content:attr(data-tip);position:absolute;left:0;top:110%;background:#111;color:#fff;padding:6px 8px;border-radius:6px;font-size:12px;white-space:nowrap}

/* info icon */
.info{display:inline-block;margin-left:8px;background:rgba(0,0,0,0.04);color:var(--muted);width:20px;height:20px;border-radius:50%;text-align:center;line-height:20px;font-size:12px;cursor:help}
.info:hover{background:var(--glass);color:var(--accent)}
.info::after{content:attr(data-tip);display:none}
.info:hover::after{display:block;position:absolute;background:#111;color:#fff;padding:6px 10px;border-radius:6px;font-size:13px;white-space:nowrap;margin-top:6px}

/* inline validation */
.error{color:var(--danger);font-size:13px;margin-top:6px}

/* copy/export buttons */
.result-actions button.alt{background:#fff;color:var(--accent);border:1px solid rgba(15,110,253,0.12)}

/* mobile nav animation tweak */
.navbar .nav-links{transition:all 260ms ease-in-out}

/* small polish */
input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}