:root {
  --navy: #12263a; --navy-2: #19344f; --green: #1f5a4a; --green-2: #2f735f;
  --ink: #17202a; --muted: #687481; --line: #dfe5e8; --surface: #ffffff;
  --background: #f3f6f7; --shadow: 0 14px 40px rgba(18,38,58,.08);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin:0; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; color:var(--ink); background:var(--background); }
body.modal-open { overflow:hidden; }
button,input { font:inherit; }
button { cursor:pointer; }
.app-shell { min-height:100vh; display:flex; }
.sidebar { width:265px; flex:0 0 265px; background:var(--navy); color:white; display:flex; flex-direction:column; padding:24px 16px; }
.brand { display:flex; align-items:center; gap:12px; padding:4px 8px 28px; }
.brand-mark { width:42px;height:42px;border-radius:12px;background:var(--green-2);display:grid;place-items:center;color:#fff; } .brand-mark svg{width:29px;height:29px;fill:none;stroke:currentColor;stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round}
.brand-title { font-weight:780; font-size:16px; letter-spacing:-.2px; }.brand-subtitle { color:#aebbc5;font-size:12px;margin-top:2px; }
.nav { display:grid;gap:5px; }.nav-item { width:100%;border:0;background:transparent;color:#c8d2d9;display:flex;align-items:center;gap:12px;text-align:left;padding:11px 12px;border-radius:9px;transition:.15s ease; }.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}.nav-item.active{background:rgba(255,255,255,.12);color:#fff}.nav-icon{width:22px;height:22px;display:grid;place-items:center;opacity:.95;flex:0 0 22px}.nav-icon svg{width:20px;height:20px}
.sidebar-footer{margin-top:auto;color:#9eabb5;font-size:11px;line-height:1.5;padding:18px 8px 4px}.sidebar-footer strong{color:#dfe7eb}
.main{flex:1;min-width:0;padding:0 34px 34px}.topbar{min-height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);margin-bottom:28px}.eyebrow{margin:0 0 6px;color:var(--green);font-weight:800;letter-spacing:1.4px;font-size:10px}h1{margin:0;font-size:25px;letter-spacing:-.4px}.topbar-actions{display:flex;align-items:center;gap:8px}
.topbar-button,.home-button,.save-toolbar-button{border:1px solid var(--line);background:#fff;color:var(--navy);border-radius:9px;padding:9px 12px;font-weight:650;display:inline-flex;align-items:center;gap:7px}.topbar-button:hover,.home-button:hover,.save-toolbar-button:hover{border-color:#b8c4ca}.topbar-button svg,.save-toolbar-button svg{width:16px;height:16px}
.account-button{border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--navy);display:flex;align-items:center;gap:9px;padding:6px 10px 6px 7px;text-align:left}.account-button strong{display:block;font-size:12px}.account-button small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.account-avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#edf3f1;color:var(--green)}.account-avatar svg{width:18px;height:18px}
.dashboard-home{max-width:1180px;margin:0 auto}.welcome{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px 30px;box-shadow:var(--shadow);margin-bottom:22px}.welcome h2{margin:0 0 8px;font-size:25px;max-width:700px}.welcome p:not(.eyebrow){margin:0;color:var(--muted);line-height:1.6;max-width:760px}.calculator-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.calculator-card{border:1px solid var(--line);background:#fff;border-radius:13px;padding:18px;display:grid;grid-template-columns:42px 1fr 22px;align-items:center;gap:13px;text-align:left;box-shadow:0 5px 18px rgba(18,38,58,.04);transition:.16s ease}.calculator-card:hover{transform:translateY(-2px);border-color:#bcc9cf;box-shadow:var(--shadow)}.card-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:10px;background:#edf3f1;color:var(--green)}.card-icon svg{width:25px;height:25px}.calculator-card strong{display:block;font-size:15px;color:var(--navy)}.calculator-card small{display:block;margin-top:4px;color:var(--muted);line-height:1.4;font-size:12px}.arrow{color:#82909a;font-size:20px}
.calculator-view{height:calc(100vh - 144px);min-height:650px;display:flex;flex-direction:column}.calculator-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;color:var(--muted);font-size:12px;font-weight:650}.toolbar-actions{display:flex;gap:7px}.calculator-toolbar button{border:1px solid var(--line);background:#fff;padding:7px 11px;border-radius:7px;cursor:pointer;color:var(--navy)}.back-dashboard-button{width:38px;height:38px;padding:0!important;display:grid;place-items:center;border-radius:9px!important}.back-dashboard-button svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.back-dashboard-button:hover{border-color:#b8c4ca;background:#f8fafb}.calculator-toolbar .save-toolbar-button{background:var(--green);color:#fff;border-color:var(--green);}.calculator-toolbar .save-toolbar-button:hover{background:var(--green-2);border-color:var(--green-2)}#calculatorFrame{width:100%;flex:1;min-height:0;border:1px solid var(--line);border-radius:13px;background:#fff;box-shadow:var(--shadow)}
.modal-backdrop{position:fixed;inset:0;background:rgba(18,38,58,.42);display:grid;place-items:center;padding:20px;z-index:100}.modal{width:min(520px,100%);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 24px 70px rgba(18,38,58,.22);padding:22px}.modal-wide{width:min(760px,100%);max-height:80vh;display:flex;flex-direction:column}.modal-header{display:flex;justify-content:space-between;align-items:flex-start;gap:15px}.modal-header h2{margin:0;font-size:21px}.modal-close{border:0;background:transparent;font-size:27px;line-height:1;color:#77838c}.modal-label{display:block;margin-top:20px;color:var(--navy);font-size:12px;font-weight:700}.modal-label input{display:block;width:100%;margin-top:8px;border:1px solid #cbd5da;border-radius:9px;padding:11px 12px;outline:none}.modal-label input:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(47,115,95,.12)}.modal-help,.account-copy{color:var(--muted);font-size:12px;line-height:1.6}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.modal-primary,.modal-secondary{border-radius:8px;padding:9px 13px;font-weight:700}.modal-primary{background:var(--green);color:#fff;border:1px solid var(--green)}.modal-secondary{background:#fff;color:var(--navy);border:1px solid var(--line)}.saved-list{overflow:auto;margin-top:12px;display:grid;gap:8px}.saved-item{display:grid;grid-template-columns:38px 1fr auto;gap:11px;align-items:center;border:1px solid var(--line);border-radius:11px;padding:11px}.saved-item-icon{width:38px;height:38px;border-radius:9px;background:#edf3f1;color:var(--green);display:grid;place-items:center}.saved-item-icon svg{width:21px;height:21px}.saved-item-main strong{display:block;color:var(--navy);font-size:13px}.saved-item-main small{display:block;color:var(--muted);font-size:10px;margin-top:3px}.saved-item-actions{display:flex;gap:5px}.saved-item-actions button{border:1px solid var(--line);background:#fff;color:var(--navy);border-radius:7px;padding:6px 9px;font-size:11px;font-weight:700}.saved-item-actions .danger{color:#8b3b3b}.empty-state{padding:35px 20px;text-align:center;color:var(--muted);border:1px dashed #ccd5d9;border-radius:12px}.empty-state strong,.empty-state span{display:block}.empty-state strong{color:var(--navy);margin-bottom:5px}.empty-state span{font-size:12px}.account-options{display:grid;gap:8px;margin-top:16px}.account-option{border:1px solid var(--line);background:#fff;border-radius:10px;padding:13px;text-align:left}.account-option:hover{border-color:#b8c4ca}.account-option strong,.account-option small{display:block}.account-option strong{color:var(--navy)}.account-option small{color:var(--muted);font-size:11px;margin-top:3px}
@media (max-width:850px){.sidebar{width:74px;flex-basis:74px;padding:18px 10px}.brand-title,.brand-subtitle,.nav-item span:not(.nav-icon),.sidebar-footer{display:none}.brand{padding:0 6px 22px}.nav-item{justify-content:center;padding:11px 7px}.main{padding:0 18px 20px}.calculator-grid{grid-template-columns:1fr}.welcome{padding:22px}.topbar-actions{gap:5px}.account-button span:last-child{display:none}.account-button{padding:7px}.topbar-button{font-size:0;padding:9px}.topbar-button svg{width:18px;height:18px}}

/* Project management */
.section-heading-row,.project-detail-header{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-heading-row h2,.project-detail-header h2{margin:0;font-size:26px;letter-spacing:-.4px}.section-heading-row p:not(.eyebrow),.project-detail-header p:not(.eyebrow){margin:7px 0 0;color:var(--muted);font-size:13px;line-height:1.5}.primary-action{border:1px solid var(--green);background:var(--green);color:#fff;border-radius:9px;padding:10px 13px;font-weight:750;display:inline-flex;align-items:center;gap:7px;white-space:nowrap}.primary-action:hover{background:var(--green-2);border-color:var(--green-2)}.primary-action svg{width:16px;height:16px}.projects-view,.project-detail-view{max-width:1180px;margin:0 auto}.project-grid{display:grid;grid-template-columns:1fr;gap:12px}.project-card{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:16px;display:grid;grid-template-columns:46px 1fr auto 20px;align-items:center;gap:13px;text-align:left;box-shadow:0 5px 18px rgba(18,38,58,.04);transition:.16s ease}.project-card:hover{transform:translateY(-2px);border-color:#bcc9cf;box-shadow:var(--shadow)}.project-card-icon{width:46px;height:46px;border-radius:11px;background:#edf3f1;color:var(--green);display:grid;place-items:center}.project-card-icon svg{width:25px;height:25px}.project-card-main strong{display:block;color:var(--navy);font-size:15px}.project-card-main small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.project-card-total{text-align:right;padding-left:18px}.project-card-total small{display:block;color:var(--muted);font-size:10px}.project-card-total strong{display:block;color:var(--green);font-size:15px;margin-top:3px}.empty-projects{background:#fff;border:1px dashed #cbd5da;border-radius:14px;padding:55px 20px;text-align:center;display:grid;justify-items:center;gap:9px}.empty-project-icon{width:50px;height:50px;border-radius:12px;background:#edf3f1;color:var(--green);display:grid;place-items:center}.empty-project-icon svg{width:26px;height:26px}.empty-projects strong{color:var(--navy);font-size:17px}.empty-projects span{color:var(--muted);font-size:12px;margin-bottom:7px}.back-button{border:0;background:transparent;color:var(--green);padding:0;margin:0 0 22px;font-weight:750}.project-detail-header{align-items:flex-start}.project-detail-actions{display:flex;gap:8px}.project-total-card{background:var(--navy);color:#fff;border-radius:15px;padding:20px 22px;display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;box-shadow:var(--shadow)}.project-total-card span{display:block;font-weight:750;font-size:13px}.project-total-card small{display:block;color:#b9c5cd;font-size:11px;margin-top:4px}.project-total-card strong{font-size:26px;letter-spacing:-.5px}.project-table-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}.table-heading{padding:18px 20px;border-bottom:1px solid var(--line)}.table-heading h3{margin:0;color:var(--navy);font-size:16px}.table-heading p{margin:4px 0 0;color:var(--muted);font-size:11px}.table-wrap{overflow:auto}.project-table{width:100%;border-collapse:collapse;min-width:760px}.project-table th,.project-table td{padding:13px 16px;border-bottom:1px solid #edf0f2;text-align:left;font-size:12px}.project-table thead th{background:#f7f9fa;color:#65727d;font-size:10px;text-transform:uppercase;letter-spacing:.7px}.project-table tbody td{color:#53616c}.project-table tbody td strong{color:var(--navy)}.project-table .table-number{font-weight:750;color:var(--green)}.project-table tfoot th{padding:15px 16px;background:#f4f7f7;color:var(--navy);font-size:12px}.project-table tfoot th:nth-child(3){color:var(--green);font-size:14px}.table-actions{white-space:nowrap}.table-actions button{border:1px solid var(--line);background:#fff;color:var(--navy);border-radius:6px;padding:5px 8px;font-size:10px;font-weight:750;margin-left:4px}.table-actions .danger{color:#8b3b3b}.table-empty{text-align:center!important;color:var(--muted)!important;padding:40px!important}.inline-link-button{border:0;background:transparent;color:var(--green);font-size:11px;font-weight:750;padding:0;margin-top:8px}.inline-link-button:hover{text-decoration:underline}.project-modal-list{overflow:auto;display:grid;gap:8px;margin-top:14px}.project-modal-item{width:100%;border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px;display:grid;grid-template-columns:38px 1fr 18px;align-items:center;gap:10px;text-align:left}.project-modal-item:hover{border-color:#b8c4ca}.project-modal-item strong,.project-modal-item small{display:block}.project-modal-item strong{color:var(--navy);font-size:12px}.project-modal-item small{color:var(--muted);font-size:10px;margin-top:3px}.project-modal-item>span:last-child{color:#83909a;font-size:18px}

@media (max-width:850px){.section-heading-row,.project-detail-header{align-items:flex-start;flex-direction:column}.project-card{grid-template-columns:42px 1fr 18px}.project-card-total{display:none}.project-total-card{align-items:flex-start;gap:15px;flex-direction:column}.project-total-card strong{font-size:24px}}

/* Saved calculations page */
.saved-view{max-width:1180px;margin:0 auto}.saved-page-list{display:grid;gap:10px}.saved-page-list .saved-item{background:#fff;box-shadow:0 5px 18px rgba(18,38,58,.04)}