:root {
  --bg:#0a0a0f;--surface:#13131a;--surface2:#1c1c27;--surface3:#252535;
  --border:#2a2a3d;--accent:#ff3c3c;--accent2:#ff6b35;--accentglow:rgba(255,60,60,0.15);
  --text:#f0f0f5;--text2:#9090a8;--text3:#5a5a72;
  --green:#2dda8c;--yellow:#ffc24a;--blue:#4a9eff;--purple:#a78bfa;
  --radius:10px;--shadow:0 4px 24px rgba(0,0,0,0.4);
  /* Theme customizer overrides — set by applyTheme() */
  --theme-accent:var(--accent);
  --theme-font:'DM Sans',sans-serif;
  --theme-heading-font:'Syne',sans-serif;
}
/* Color swatch picker */
.color-swatch{width:30px;height:30px;border-radius:6px;border:2px solid transparent;cursor:pointer;transition:all .15s;display:inline-block}
.color-swatch.active,.color-swatch:hover{border-color:var(--text);transform:scale(1.1)}
.font-option{padding:7px 12px;border-radius:7px;border:1px solid var(--border);cursor:pointer;font-size:12px;background:var(--surface2);transition:all .15s;white-space:nowrap}
.font-option.active,.font-option:hover{border-color:var(--accent);background:var(--accentglow)}
.theme-preview-box{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;margin-top:12px}
/* Invoice style presets */
.inv-style-opt{border:2px solid var(--border);border-radius:8px;padding:10px;cursor:pointer;transition:all .15s;text-align:center;font-size:11px;color:var(--text2)}
.inv-style-opt.active,.inv-style-opt:hover{border-color:var(--accent);color:var(--text)}
.inv-style-opt svg{display:block;margin:0 auto 6px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
/* Auth splash — covers everything until session check completes */
#auth-splash{position:fixed;inset:0;background:var(--bg);z-index:99998;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:16px;transition:opacity .35s ease}
#auth-splash.hidden{opacity:0;pointer-events:none}
#auth-splash .splash-logo{width:72px;height:72px;border-radius:18px;overflow:hidden;background:var(--surface3)}
#auth-splash .splash-logo img{width:100%;height:100%;object-fit:cover}
#auth-splash .splash-spinner{width:36px;height:36px;border:3px solid rgba(230,48,34,.2);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
#auth-splash .splash-text{font-size:13px;color:var(--text2);font-family:'DM Sans',sans-serif}
/* Hide app wrapper until auth confirmed */
#app-wrapper{visibility:hidden}
#app-wrapper.auth-ready{visibility:visible}
/* LOGIN */
#login-screen{display:none;position:fixed;inset:0;background:var(--bg);z-index:9999;align-items:center;justify-content:center;flex-direction:column}
#login-screen.show{display:flex}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:40px 44px;width:400px;max-width:92vw;box-shadow:0 24px 64px rgba(0,0,0,.6)}
.login-logo{display:flex;align-items:center;gap:14px;margin-bottom:28px}
.login-logo-icon{width:52px;height:52px;border-radius:10px;background:var(--surface3);display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0;overflow:hidden}
.login-logo-icon img{width:100%;height:100%;object-fit:contain;border-radius:10px}
.login-title{font-family:'Syne',sans-serif;font-size:20px;font-weight:800}
.login-sub{font-size:11px;color:var(--accent);font-family:'DM Mono',monospace;letter-spacing:1px;text-transform:uppercase;margin-top:2px}
.login-form .form-group{margin-bottom:16px}
.login-form label{font-size:11px;color:var(--text2);font-weight:500;display:block;margin-bottom:6px}
.login-form input{width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:11px 14px;font-size:14px;font-family:'DM Sans',sans-serif;outline:none;transition:border-color .15s}
.login-form input:focus{border-color:var(--accent)}
.login-error{background:rgba(255,60,60,.1);border:1px solid rgba(255,60,60,.3);border-radius:8px;padding:10px 14px;font-size:12px;color:var(--accent);margin-bottom:14px;display:none}
.login-error.show{display:block}
.login-btn{width:100%;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:12px;font-size:14px;font-weight:600;font-family:'DM Sans',sans-serif;cursor:pointer;transition:all .15s;margin-top:4px}
.login-btn:hover{background:#e03030;transform:translateY(-1px)}
.login-footer{font-size:11px;color:var(--text3);text-align:center;margin-top:18px}
/* SHARE VIEW */
#share-view{display:none;min-height:100vh;background:var(--bg);padding:32px}
#share-view.show{display:block}
.share-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.app{display:flex;min-height:100vh}
/* SIDEBAR */
.sidebar{width:230px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}
.logo{padding:20px 18px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}
.logo-img{width:44px;height:44px;border-radius:8px;object-fit:cover;background:var(--surface3);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;overflow:hidden}
.logo-img img{width:100%;height:100%;object-fit:cover;border-radius:8px}
.logo-text .name{font-family:'Syne',sans-serif;font-weight:800;font-size:13px;line-height:1.2}
.logo-text .sub{font-size:10px;color:var(--accent);font-family:'DM Mono',monospace;letter-spacing:1px;text-transform:uppercase;margin-top:2px}
.nav{padding:10px 0;flex:1;overflow-y:auto}
.nav-section{padding:14px 18px 5px;font-size:10px;color:var(--text3);letter-spacing:1.5px;text-transform:uppercase;font-family:'DM Mono',monospace}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 18px;color:var(--text2);cursor:pointer;font-size:13px;font-weight:500;border-left:3px solid transparent;transition:all .15s}
.nav-item:hover{background:var(--surface2);color:var(--text)}
.nav-item.active{background:var(--accentglow);color:var(--text);border-left-color:var(--accent)}
.nav-icon{font-size:15px;width:18px;text-align:center}
.sidebar-bottom{padding:14px 18px;border-top:1px solid var(--border);font-size:11px;color:var(--text3)}
/* MAIN */
.main{margin-left:230px;flex:1;min-height:100vh}
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 28px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}
.page-title{font-family:'Syne',sans-serif;font-size:19px;font-weight:700}
.btn{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:var(--radius);border:none;cursor:pointer;font-family:'DM Sans',sans-serif;font-size:13px;font-weight:500;transition:all .15s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#e03030;transform:translateY(-1px);box-shadow:0 4px 16px rgba(255,60,60,.35)}
.btn-ghost{background:var(--surface3);color:var(--text2)}
.btn-ghost:hover{background:var(--border);color:var(--text)}
.btn-green{background:var(--green);color:#0a0a0f}
.btn-green:hover{opacity:.85}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{opacity:.85}
.btn-sm{padding:5px 11px;font-size:12px}
.content{padding:28px}
.page{display:none}
.page.active{display:block}
/* CARDS */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.card-header{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-title{font-family:'Syne',sans-serif;font-size:13px;font-weight:700}
/* STATS */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:24px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;position:relative;overflow:hidden}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.stat-card.green::before{background:var(--green)}.stat-card.red::before{background:var(--accent)}
.stat-card.yellow::before{background:var(--yellow)}.stat-card.blue::before{background:var(--blue)}
.stat-card.purple::before{background:var(--purple)}
.stat-label{font-size:10px;color:var(--text3);text-transform:uppercase;letter-spacing:1px;font-family:'DM Mono',monospace}
.stat-value{font-family:'Syne',sans-serif;font-size:24px;font-weight:700;margin:5px 0 3px}
.stat-change{font-size:11px;color:var(--text2)}
/* TABLE */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:11px 14px;font-size:10px;color:var(--text3);text-transform:uppercase;letter-spacing:.8px;font-family:'DM Mono',monospace;font-weight:400;border-bottom:1px solid var(--border)}
td{padding:12px 14px;border-bottom:1px solid rgba(42,42,61,.5);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(255,255,255,.02)}
.badge{display:inline-flex;align-items:center;padding:3px 8px;border-radius:20px;font-size:10px;font-weight:500;font-family:'DM Mono',monospace}
.badge-paid{background:rgba(45,218,140,.12);color:var(--green)}
.badge-pending{background:rgba(255,194,74,.12);color:var(--yellow)}
.badge-overdue{background:rgba(255,60,60,.12);color:var(--accent)}
.badge-draft{background:var(--surface3);color:var(--text3)}
.mono{font-family:'DM Mono',monospace}
/* FORMS */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group{display:flex;flex-direction:column;gap:5px}
.form-group.full{grid-column:1/-1}
label{font-size:11px;color:var(--text2);font-weight:500}
input,select,textarea{background:var(--surface2);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:9px 12px;font-size:13px;font-family:'DM Sans',sans-serif;outline:none;transition:border-color .15s;width:100%}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
select option{background:var(--surface2)}
textarea{resize:vertical;min-height:70px}
/* INVOICE BUILDER */
.invoice-builder{display:grid;grid-template-columns:1fr 360px;gap:22px}
.builder-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.builder-section{padding:18px;border-bottom:1px solid var(--border)}
.builder-section:last-child{border-bottom:none}
.section-title{font-family:'Syne',sans-serif;font-size:11px;font-weight:700;margin-bottom:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px}
.line-items-hdr{display:grid;grid-template-columns:2fr 1fr 70px 1fr 36px;gap:7px;margin-bottom:6px}
.line-items-hdr span{font-size:10px;color:var(--text3);text-transform:uppercase;letter-spacing:.8px;font-family:'DM Mono',monospace}
.line-item{display:grid;grid-template-columns:2fr 1fr 70px 1fr 36px;gap:7px;margin-bottom:7px;align-items:center}
.line-item input{padding:7px 9px;font-size:12px}
.remove-item{background:none;border:none;color:var(--text3);cursor:pointer;font-size:17px;padding:3px;transition:color .15s}
.remove-item:hover{color:var(--accent)}
/* PREVIEW — exact PDF/Bookipi match */
.invoice-preview{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;color:#1a1a1a;height:fit-content;position:sticky;top:90px;font-size:12px}
.preview-inner{padding:32px 36px 28px}
.preview-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}
.preview-title{font-size:30px;font-weight:900;letter-spacing:-0.5px;color:#111;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:1}
.preview-company-name{font-size:13px;font-weight:700;color:#111;margin-top:9px;line-height:1.3}
.preview-company-detail{font-size:11px;color:#555;margin-top:3px;line-height:1.65}
.preview-logo-right{width:88px;height:88px;flex-shrink:0;display:flex;align-items:flex-start;justify-content:flex-end}
.preview-logo-right img{width:88px;height:88px;object-fit:contain}
/* Bill-to + invoice meta: bordered box with two columns */
.preview-meta-box{display:grid;grid-template-columns:1fr 1fr;border:1px solid #d0d0d0;border-radius:3px;margin-bottom:20px;overflow:hidden}
.preview-bill-section{padding:13px 15px}
.preview-meta-section{padding:13px 15px;border-left:1px solid #d0d0d0;display:flex;flex-direction:column;justify-content:center;gap:8px}
.preview-box-label{font-size:9px;color:#999;text-transform:uppercase;letter-spacing:1.2px;margin-bottom:5px;font-weight:600}
.preview-bill-name{font-weight:700;font-size:13px;color:#111;margin-bottom:2px}
.preview-bill-detail{font-size:11px;color:#555;line-height:1.6}
.preview-meta-row{display:flex;justify-content:space-between;align-items:baseline;gap:6px}
.preview-meta-key{font-size:9px;color:#999;text-transform:uppercase;letter-spacing:.8px;font-weight:600;white-space:nowrap}
.preview-meta-val{font-size:11px;color:#111;font-weight:600}
/* Items table */
.preview-table{width:100%;border-collapse:collapse;font-size:11px}
.preview-table thead tr{background:#fff;border-bottom:1px solid #bbb}
.preview-table th{text-align:left;padding:9px 10px;font-size:9px;text-transform:uppercase;letter-spacing:.9px;color:#666;font-weight:700}
.preview-table th.col-price,.preview-table th.col-days,.preview-table th.col-amount{text-align:right}
.preview-table tbody td{padding:11px 10px;border-bottom:1px solid #f2f2f2;color:#1a1a1a;vertical-align:top}
.preview-table tbody td.item-main{font-weight:600;color:#111}
.preview-table tbody td.item-sub{font-size:10px;color:#e05c00;padding-top:2px;padding-bottom:9px}
.preview-table tbody td.col-price,.preview-table tbody td.col-days,.preview-table tbody td.col-amount{text-align:right}
.preview-table tfoot td{padding:7px 10px;font-size:11px}
.preview-table tfoot tr.subtotal-row td,.preview-table tfoot tr.total-row td{color:#444}
.preview-table tfoot tr.subtotal-row td:last-child,.preview-table tfoot tr.total-row td:last-child{font-weight:600;text-align:right}
.preview-table tfoot tr.amount-due-row td{padding:14px 10px;border-top:1px solid #ccc}
.preview-table tfoot tr.amount-due-row td.ad-label{font-size:13px;font-weight:800;color:#111}
.preview-table tfoot tr.amount-due-row td.ad-val{font-size:14px;font-weight:800;color:#111;text-align:right}
/* Payment block */
.preview-payment-block{margin-top:22px}
.preview-payment-title{font-size:11px;font-weight:700;color:#111;margin-bottom:7px}
.preview-payment-line{font-size:11px;color:#444;line-height:1.75}
/* Policies */
.preview-policy-block{margin-top:20px;padding-top:16px;border-top:1px solid #ebebeb}
.preview-policy-para{font-size:10px;color:#555;line-height:1.65;margin-bottom:10px}
.preview-policy-para strong{color:#1a1a1a}
.actions-bar{display:flex;gap:8px;padding:14px 18px;background:var(--surface2);border-top:1px solid var(--border)}
/* CUSTOMERS */
.customers-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.customer-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;cursor:pointer;transition:all .15s}
.customer-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.customer-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-family:'Syne',sans-serif;font-weight:800;font-size:15px;margin-bottom:10px}
/* MODAL */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.72);z-index:200;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.modal-overlay.open{display:flex}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:12px;width:540px;max-width:95vw;max-height:90vh;overflow-y:auto;box-shadow:0 24px 64px rgba(0,0,0,.6);animation:modalIn .2s ease}
.modal-wide{width:720px}
@keyframes modalIn{from{transform:scale(.95) translateY(10px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}
.modal-header{padding:18px 22px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-title{font-family:'Syne',sans-serif;font-weight:700;font-size:16px}
.modal-close{background:none;border:none;color:var(--text3);cursor:pointer;font-size:22px;line-height:1}
.modal-close:hover{color:var(--text)}
.modal-body{padding:18px 22px}
.modal-footer{padding:14px 22px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:9px}
/* UPLOAD */
.upload-area{border:2px dashed var(--border);border-radius:8px;padding:20px;text-align:center;cursor:pointer;transition:all .15s;color:var(--text3);font-size:12px}
.upload-area:hover,.upload-area.dragover{border-color:var(--accent);color:var(--text);background:var(--accentglow)}
/* CHARTS */
.charts-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:22px}
.chart-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.chart-card.full{grid-column:1/-1}
.chart-title{font-family:'Syne',sans-serif;font-size:13px;font-weight:700;margin-bottom:4px}
.chart-sub{font-size:11px;color:var(--text3);margin-bottom:16px}
.chart-wrap{position:relative;height:240px}
/* EXPENSE */
.expense-cats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}
.exp-cat-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:14px;cursor:pointer;transition:all .15s}
.exp-cat-card:hover{border-color:var(--accent)}
.exp-cat-icon{font-size:20px;margin-bottom:6px}
.exp-cat-name{font-size:12px;font-weight:500}
.exp-cat-total{font-family:'DM Mono',monospace;font-size:14px;color:var(--accent);margin-top:2px}
/* SETTINGS */
.settings-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:18px;overflow:hidden}
.settings-header{padding:16px 20px;border-bottom:1px solid var(--border);font-family:'Syne',sans-serif;font-size:13px;font-weight:700}
.settings-body{padding:20px}
.logo-upload{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.logo-preview{width:80px;height:80px;border-radius:10px;background:var(--surface3);border:2px dashed var(--border);display:flex;align-items:center;justify-content:center;font-size:28px;overflow:hidden;cursor:pointer}
.logo-preview img{width:100%;height:100%;object-fit:contain}
/* SEARCH */
.search-bar{display:flex;align-items:center;gap:8px;background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:7px 12px;flex:1;max-width:280px}
.search-bar input{background:none;border:none;color:var(--text);font-size:13px;outline:none;flex:1}
/* TOAST */
.toast-container{position:fixed;bottom:22px;right:22px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:11px 15px;font-size:13px;box-shadow:var(--shadow);animation:toastIn .2s ease;display:flex;align-items:center;gap:9px;max-width:300px}
.toast.success{border-left:3px solid var(--green)}.toast.error{border-left:3px solid var(--accent)}
@keyframes toastIn{from{transform:translateX(20px);opacity:0}to{transform:translateX(0);opacity:1}}
/* EMPTY */
.empty-state{text-align:center;padding:50px 20px;color:var(--text3)}
.empty-icon{font-size:44px;margin-bottom:10px}
.empty-text{font-size:14px;margin-bottom:5px;color:var(--text2);font-family:'Syne',sans-serif}
.empty-sub{font-size:12px}
/* TAX SUMMARY */
.tax-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--border)}
.tax-row:last-child{border-bottom:none}
.tax-label{font-size:13px;color:var(--text2)}
.tax-val{font-family:'DM Mono',monospace;font-size:14px}
.tax-row.highlight .tax-label{color:var(--text);font-weight:500}
.tax-row.highlight .tax-val{color:var(--accent);font-size:16px}
/* SCROLLBAR */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:var(--surface)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
/* TWO COL */
.two-col{display:grid;grid-template-columns:2fr 1fr;gap:18px}
/* FILTER TABS */
.filter-tabs{display:flex;gap:8px;flex-wrap:wrap}
.filter-btn{background:var(--surface3);color:var(--text2);border:none;cursor:pointer;padding:5px 12px;border-radius:6px;font-size:12px;font-family:'DM Sans',sans-serif;font-weight:500;transition:all .15s}
.filter-btn.active{background:var(--accent);color:#fff}
/* PRINT */
@media print{.sidebar,.topbar,.builder-panel,.btn,.actions-bar{display:none!important}.main{margin:0}.invoice-preview{box-shadow:none;border:none}}