:root{--blue:#0b6bff;--blue2:#eaf2ff;--green:#19984b;--green2:#ebfaef;--text:#111827;--muted:#667085;--line:#e5e7eb;--bg:#f6f8fb;--card:#fff;--danger:#dc2626;--shadow:0 18px 45px rgba(16,24,40,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}a{color:var(--blue);text-decoration:none}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:26px;justify-content:space-between;padding:18px 34px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:var(--text)}.brand.big{font-size:22px}.logo{display:grid;place-items:center;width:34px;height:34px;border:2px solid var(--blue);border-radius:10px;color:var(--blue);font-weight:800}.main-nav{display:flex;gap:22px;font-size:14px}.main-nav a{color:#334155}.main-nav .admin-link{font-weight:700;color:var(--blue)}.header-actions{display:flex;align-items:center;gap:10px}.hello{font-size:14px;color:var(--muted)}.btn{border:0;border-radius:10px;padding:10px 14px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.primary{background:var(--blue);color:#fff}.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--text)}.btn.danger{background:#fee2e2;color:#991b1b}.btn.large{width:100%;padding:14px 18px}.page{max-width:1220px;margin:0 auto;padding:30px 20px 70px}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:center;padding:40px;border-radius:24px;background:#fff;box-shadow:var(--shadow);margin-bottom:20px}.hero h1{font-size:54px;line-height:1.02;margin:0 0 18px}.hero p{max-width:570px;color:var(--muted);font-size:17px}.hero-model{height:210px;border-radius:32px;background:radial-gradient(circle at 30% 30%,#e9eef6,#c8d1df 50%,#8f9cae);display:grid;place-items:center;font-size:110px;color:#697386;transform:rotate(-10deg)}.save-notice{background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:13px 18px;color:#0757d8;font-weight:700;margin:18px 0}.calculator-card,.panel,.auth-card,.install-card,.empty-card{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:22px}.mode-tabs{display:flex;gap:8px;margin-bottom:16px}.mode-tabs button{flex:1;padding:14px;border:1px solid var(--line);background:#fff;border-radius:12px;font-weight:800;cursor:pointer}.mode-tabs button.active{background:var(--blue);color:#fff;border-color:var(--blue)}.calc-form{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.form-card{background:#fbfcfe;border:1px solid var(--line);border-radius:16px;padding:16px}.form-card h3,.panel h2{margin:0 0 14px}label{display:grid;gap:7px;font-size:13px;font-weight:700;color:#344054;margin-bottom:12px}input,select{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 11px;background:#fff;color:var(--text)}input[readonly]{background:#f8fafc;color:var(--muted)}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}.result-card{border-radius:18px;padding:22px;border:1px solid var(--line)}.result-card span{display:block;font-weight:800;margin-bottom:12px}.result-card strong{display:block;font-size:30px;margin-bottom:14px}.result-card small{display:block;color:var(--muted);margin-top:5px}.result-card.blue{background:linear-gradient(135deg,#fff,#eef5ff)}.result-card.green{background:linear-gradient(135deg,#fff,#effcef)}.muted{color:var(--muted)}.center{text-align:center}.flash{padding:12px 14px;border-radius:12px;margin-bottom:14px}.flash.success{background:#dcfce7;color:#166534}.flash.error{background:#fee2e2;color:#991b1b}.auth-card,.install-card{max-width:620px;margin:40px auto}.install-body{display:grid;place-items:center;min-height:100vh;padding:25px}.form-grid{display:grid;gap:14px}.form-grid.single{grid-template-columns:1fr}.form-grid.two{grid-template-columns:1fr 1fr}.form-grid.three{grid-template-columns:repeat(3,1fr)}.dashboard-layout{display:grid;grid-template-columns:240px 1fr;gap:20px}.sidebar{background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;height:max-content;box-shadow:var(--shadow);display:grid;gap:6px}.sidebar a{padding:12px 14px;border-radius:12px;color:#334155;font-weight:700}.sidebar a.active,.sidebar a:hover{background:var(--blue2);color:var(--blue)}.dashboard-main{min-width:0}.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head h1{margin:0}.section-head p{margin:7px 0 0;color:var(--muted)}.project-grid,.admin-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.project-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.project-card h3{margin:0 0 8px}.project-card p{color:var(--muted);margin:0 0 10px}.project-card ul{padding-left:18px;color:#475467}.card-actions,.row-actions{display:flex;gap:8px;align-items:center}.split-grid{display:grid;grid-template-columns:360px 1fr;gap:18px}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}th{font-size:12px;color:var(--muted);text-transform:uppercase}.pill{display:inline-block;background:#eef2ff;color:#3730a3;border-radius:999px;padding:2px 8px;font-size:12px;margin-left:6px}.link-danger{border:0;background:none;color:var(--danger);font-weight:700;cursor:pointer}.stat strong{font-size:40px;display:block;margin:12px 0}.ad-placeholder{border:1px dashed #cbd5e1;border-radius:16px;padding:24px;text-align:center;color:#94a3b8;background:#fff;margin:14px 0}.ad-box img{max-width:100%;display:block;border-radius:14px}.footer{max-width:1220px;margin:0 auto;padding:0 20px 30px;color:var(--muted);text-align:center}.check{display:flex;grid-template-columns:auto 1fr;align-items:center}.check input{width:auto}@media(max-width:900px){.site-header{flex-wrap:wrap;padding:16px}.main-nav{order:3;width:100%;overflow:auto}.hero,.calc-form,.result-grid,.dashboard-layout,.split-grid,.project-grid,.admin-grid,.form-grid.two,.form-grid.three{grid-template-columns:1fr}.hero h1{font-size:38px}.hero-model{display:none}.page{padding:18px 12px 50px}}
.mode-dependent[hidden]{display:none!important}.field-help{margin:4px 0 0;color:var(--muted);font-size:13px;line-height:1.45}.settings-group{background:#fbfcfe;border:1px solid var(--line);border-radius:16px;padding:16px}.settings-group.full,.full{grid-column:1/-1}.settings-group h2{margin:0 0 14px;font-size:18px}

/* Language and currency switcher */
.header-actions{gap:10px;flex-wrap:wrap;align-items:center}.preference-form{display:flex;gap:6px;align-items:center}.preference-form select{min-width:76px;padding:9px 10px;border:1px solid var(--border,#d9e2ef);border-radius:10px;background:#fff;color:var(--text,#0f172a);font-weight:600}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.form-grid.compact{gap:12px;margin-top:12px}
@media (max-width: 900px){.site-header{align-items:flex-start}.header-actions{width:100%;justify-content:flex-start}.preference-form{order:-1}}