:root{--red:#d71920;--dark:#181818;--gray:#f3f4f6;--line:#e5e7eb;--white:#fff}
*{box-sizing:border-box}body{margin:0;font-family:Aptos,Segoe UI,Arial,sans-serif;background:#f6f7f9;color:#222}
.topbar{height:66px;background:var(--dark);color:#fff;display:flex;align-items:center;padding:0 4%;gap:35px;position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:12px;font-weight:700}.logo{background:var(--red);padding:8px 10px;letter-spacing:1px}
.topbar nav{display:flex;gap:4px;margin-left:auto}.topbar a{color:#fff;text-decoration:none;padding:11px 12px;border-radius:7px}.topbar a:hover{background:#333}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:24px}.container{max-width:1450px;margin:30px auto;padding:0 22px}
h1{margin:0 0 5px;font-size:28px}h2{font-size:19px}.muted{color:#6b7280}.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;gap:15px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:22px}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:0 3px 14px #00000008}
.stat b{font-size:28px;display:block;color:var(--red)}.stat span{color:#666}.section-title{display:flex;justify-content:space-between;align-items:center}
.btn{display:inline-block;background:#fff;color:#222;border:1px solid #d1d5db;padding:10px 15px;border-radius:8px;text-decoration:none;cursor:pointer;font-weight:600}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}.filters{display:grid;grid-template-columns:2fr 1fr 1fr;gap:10px;margin-bottom:16px}
.discount-filters{grid-template-columns:2fr 1fr}
input,select{width:100%;padding:11px 12px;border:1px solid #cfd3d8;border-radius:8px;background:#fff;font:inherit}
label{font-weight:600;color:#444}label input,label select{margin-top:7px;font-weight:400}.table-card{padding:0;overflow:hidden}.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;min-width:950px}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
th{background:#f8f8f8;font-size:13px;color:#555;position:sticky;top:0}td{font-size:14px}.sale{font-weight:800;color:var(--red);white-space:nowrap}
tbody tr:nth-child(odd){background:#ffffff}tbody tr:nth-child(even){background:#edf0f4}tbody tr:hover{background:#fff4f4}
.temporary-sale-discount{min-width:90px;max-width:110px;font-weight:700;border-color:#d71920;background:#fffdfd}
.cart-add-form{display:flex;gap:6px;min-width:145px}.cart-add-form input{width:70px}.cart-add-form .btn{padding:8px 10px}.checkout-panel{margin-top:18px;display:flex;justify-content:space-between;align-items:end;gap:20px}.checkout-panel>div{display:flex;flex-direction:column}.checkout-panel>div b{font-size:30px;color:var(--red)}.checkout-panel form{display:flex;align-items:end;gap:12px}.report-cards{grid-template-columns:repeat(5,1fr)}.expected{border:2px solid var(--red)}
.actions{white-space:nowrap}.actions a,.actions button{color:var(--red);background:none;border:0;text-decoration:none;cursor:pointer;margin-right:8px}.actions form{display:inline}
.pagination{display:flex;justify-content:center;gap:18px;margin:20px}.pagination a{color:var(--red);text-decoration:none}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.form-grid .wide{grid-column:1/-1}.form-actions{display:flex;justify-content:flex-end;gap:10px}.upload{max-width:700px}.alert{padding:13px 16px;border-radius:8px;margin-bottom:15px}
.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.login-card{max-width:430px;margin:11vh auto;background:#fff;padding:35px;border-radius:14px;border-top:6px solid var(--red);box-shadow:0 12px 35px #0002}
.login-logo{font-weight:900;color:var(--red);letter-spacing:1px}.login-card label{display:block;margin:18px 0}.login-card .btn{width:100%}
@media(max-width:900px){.cards,.report-cards{grid-template-columns:repeat(2,1fr)}.filters{grid-template-columns:1fr 1fr}.filters input{grid-column:1/-1}.form-grid{grid-template-columns:1fr 1fr}.topbar nav{display:none;position:absolute;top:66px;left:0;right:0;background:#222;padding:12px;flex-direction:column}.menu-open .topbar nav{display:flex}.menu-btn{display:block;margin-left:auto}.brand span:last-child{display:none}.checkout-panel,.checkout-panel form{align-items:stretch;flex-direction:column}}
@media(max-width:600px){.container{padding:0 12px;margin-top:18px}.cards{grid-template-columns:1fr 1fr;gap:10px}.card{padding:15px}.stat b{font-size:22px}.page-head{align-items:flex-start}.filters,.form-grid{grid-template-columns:1fr}.filters input,.form-grid .wide{grid-column:auto}.topbar{padding:0 14px}.page-head>div:last-child{display:flex;flex-direction:column;gap:7px}}

/* İmza Elektrik profesyonel görünüm */
body{background:linear-gradient(135deg,#f8f9fb,#eef1f5);color:#181b20}
.topbar{min-height:78px;height:auto;background:linear-gradient(110deg,#0d0f13,#242730);padding:8px 3%;box-shadow:0 8px 24px #0003}
.brand{white-space:nowrap}.brand img{width:190px;height:54px;object-fit:contain;background:#fff;border-radius:8px;padding:4px}
.card{border-radius:16px;box-shadow:0 12px 32px #11182712}
.btn.primary{background:linear-gradient(135deg,#ad1119,#e1262f);box-shadow:0 7px 18px #b3131b2b}
.login-card{max-width:470px;margin-top:8vh;padding:38px;border-radius:20px;box-shadow:0 24px 65px #0002}.login-brand-image{display:block;width:100%;max-height:130px;object-fit:contain;margin-bottom:20px}
.custom-product{padding:0;margin-bottom:16px;border-left:5px solid var(--red)}.custom-product summary{cursor:pointer;padding:16px 20px;font-weight:800;color:var(--red)}.custom-grid{display:grid;grid-template-columns:2fr .7fr 1fr auto;gap:12px;align-items:end;padding:0 20px 20px}
.receipt{max-width:760px;margin:20px auto;padding:42px}.receipt>img{display:block;width:360px;max-width:100%;margin:0 auto 24px}.receipt h1{text-align:center;letter-spacing:2px}.receipt-no{text-align:center;color:#6b7280;margin:8px 0 30px}.receipt dl{display:grid;grid-template-columns:180px 1fr;border-top:1px solid var(--line)}.receipt dt,.receipt dd{margin:0;padding:14px;border-bottom:1px solid var(--line)}.receipt dt{font-weight:700;background:#f8f9fb}.receipt-total{font-size:24px;font-weight:900;color:var(--red)}.receipt-note{text-align:center;color:#6b7280}.receipt-actions{display:flex;justify-content:center;gap:10px;margin-top:28px}
@media(max-width:900px){.custom-grid{grid-template-columns:1fr 1fr}.custom-grid label:first-of-type{grid-column:1/-1}.brand img{width:145px}}
@media print{.topbar,.receipt-actions,.alert{display:none!important}.container{margin:0;padding:0}.receipt{box-shadow:none;border:0;max-width:none}}
.sale-checkout-form{display:grid!important;grid-template-columns:1.4fr 1.4fr 1fr auto;gap:12px;align-items:end}.receipt-table{min-width:0;margin-top:28px}.receipt-grand-total{display:flex;justify-content:space-between;align-items:center;margin-top:20px;padding:18px;background:#f7f8fa;border-radius:12px}.receipt-grand-total b{font-size:28px;color:var(--red)}
@media(max-width:900px){.sale-checkout-form{grid-template-columns:1fr!important}}
.sale-checkout-form{grid-template-columns:1fr 2fr auto}.account-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.account-fields[hidden]{display:none}
@media(max-width:900px){.sale-checkout-form,.account-fields{grid-template-columns:1fr!important}}
.theme-dark{background:#11151b;color:#edf0f4}.theme-dark .card,.theme-dark input,.theme-dark select{background:#1c222b;color:#f4f6f8;border-color:#38414d}.theme-dark th{background:#202731;color:#d7dce2}.theme-dark tbody tr:nth-child(odd){background:#181e26}.theme-dark tbody tr:nth-child(even){background:#222a34}.theme-dark tbody tr:hover{background:#352326}.theme-dark .muted,.theme-dark .stat span,.theme-dark label{color:#bdc5cf}
@media(prefers-color-scheme:dark){.theme-system{background:#11151b;color:#edf0f4}.theme-system .card,.theme-system input,.theme-system select{background:#1c222b;color:#f4f6f8;border-color:#38414d}.theme-system th{background:#202731;color:#d7dce2}.theme-system tbody tr:nth-child(odd){background:#181e26}.theme-system tbody tr:nth-child(even){background:#222a34}.theme-system tbody tr:hover{background:#352326}.theme-system .muted,.theme-system .stat span,.theme-system label{color:#bdc5cf}}