:root{--bg:#0f1117;--surface:#1a1d26;--surface2:#222535;--border:#2e3148;--green:#10A038;--green-dim:#0d7a2c;--green-glow:rgba(16,160,56,0.15);--text:#e8eaf0;--text-dim:#8890a8;--text-muted:#4a5168;--accent:#3d7fff;--warn:#f5a623;--error:#e84040;--mono:'Courier New',monospace;--radius:8px;}
*{box-sizing:border-box;margin:0;padding:0;}
body{background:var(--bg);color:var(--text);font-family:'Segoe UI',system-ui,sans-serif;font-size:14px;height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden;}
svg{width:16px;height:16px;flex-shrink:0;}
nav svg,.nav-tab svg{width:16px!important;height:16px!important;}
.empty-state svg{width:64px!important;height:64px!important;opacity:0.3;}

/* Col-toggle menu overlay (mobile bottom sheet backdrop) */
.col-toggle-overlay{display:none;position:fixed;inset:0;z-index:9998;background:rgba(0,0,0,0.5);}
.col-toggle-overlay.open{display:block;}

nav{position:relative;background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;display:flex;align-items:center;height:52px;flex-shrink:0;gap:4px;}
.nav-brand{display:flex;align-items:center;gap:10px;margin-right:16px;}
.logo-dot{width:10px;height:10px;background:var(--green);border-radius:50%;box-shadow:0 0 8px var(--green);}
.nav-brand h1{font-size:15px;font-weight:700;white-space:nowrap;}
.nav-tab{display:flex;align-items:center;gap:7px;padding:0 16px;height:100%;font-size:13px;font-weight:500;color:var(--text-dim);cursor:pointer;border-bottom:2px solid transparent;transition:all 0.15s;}
.nav-tab:hover{color:var(--text);}
.nav-tab.active{color:var(--green);border-bottom-color:var(--green);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-version{padding:2px 8px;border-radius:4px;font-size:10px;font-weight:600;color:var(--text-muted);border:1px solid var(--border);letter-spacing:0.04em;}
.tab-content{display:none;flex:1;overflow:hidden;min-height:0;}
.tab-content.active{display:flex;flex-direction:column;}

/* TAB 1 - URUN LISTESI */
.urun-layout{display:flex;flex-direction:column;flex:1;overflow:hidden;min-height:0;}
.urun-header{padding:18px 24px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;}
.urun-title{font-size:16px;font-weight:700;display:flex;align-items:center;gap:10px;}
.urun-actions{display:flex;gap:10px;align-items:center;}
.urun-actions button{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:13px;font-weight:600;cursor:pointer;border:none;transition:all 0.15s;}
.btn-primary{background:var(--green);color:#fff;}
.btn-primary:hover{background:var(--green-dim);}
.btn-primary:disabled{opacity:0.4;cursor:not-allowed;}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border);}
.btn-secondary:hover{border-color:var(--green);color:var(--green);}
.btn-danger-outline{background:transparent;color:var(--warn);border:1px solid var(--warn);border-radius:var(--radius);padding:3px 10px;font-size:11px;cursor:pointer;white-space:nowrap;}
.btn-danger-outline:hover{background:var(--warn);color:#fff;}
.pagination-bar{background:var(--surface);}
.pagination-controls button{min-width:32px;height:32px;padding:0 10px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);color:var(--text-dim);font-size:12px;cursor:pointer;transition:all 0.15s;}
.pagination-controls button:hover:not(:disabled){border-color:var(--green);color:var(--green);}
.pagination-controls button:disabled{opacity:0.3;cursor:not-allowed;}
.pagination-controls button.active{background:var(--green);color:#fff;border-color:var(--green);}
.pagination-controls .page-ellipsis{padding:0 6px;color:var(--text-muted);font-size:12px;}
.urun-body{flex:1 1 0%;overflow:auto;padding:8px 16px 24px;min-height:0;position:relative;-webkit-overflow-scrolling:touch;touch-action:pan-y;overscroll-behavior:contain;}
.urun-count{font-size:13px;color:var(--text-dim);padding:0 24px 8px;}
.urun-filters select:disabled{opacity:0.3;cursor:not-allowed;}
.urun-table{width:100%;border-collapse:collapse;font-size:12px;}
.urun-table thead th{position:sticky;top:0;background:var(--bg);text-align:left;font-size:10px;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;color:var(--text-muted);padding:8px 8px;border-bottom:1px solid var(--border);white-space:nowrap;cursor:pointer;user-select:none;z-index:1;}
.urun-table thead th:hover{color:var(--green);}
.urun-table thead th .sort-arrow{display:inline-block;margin-left:3px;color:var(--text-muted);font-size:9px;}
.urun-table thead th.sorted-asc .sort-arrow,.urun-table thead th.sorted-desc .sort-arrow{color:var(--green);}
.urun-table tbody tr{height:32px;box-sizing:border-box;transition:background 0.1s;}
.urun-table tbody tr:hover{background:var(--green-glow);}
.urun-table td{padding:7px 8px;font-size:12px;vertical-align:top;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.urun-table tbody td{height:32px;box-sizing:border-box;padding:0 8px;line-height:31px;border-bottom:1px solid var(--border);}
.urun-ref{font-family:var(--mono);font-weight:700;color:var(--green);white-space:nowrap;}
.urun-name{color:var(--text);}
.urun-id{font-family:var(--mono);font-size:11px;color:var(--text-muted);}
.urun-col-hidden{display:none!important;}
.col-toggle{position:relative;}
.col-toggle-btn{display:flex;align-items:center;gap:5px;padding:6px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);color:var(--text-dim);font-size:12px;cursor:pointer;font-weight:500;transition:all 0.15s;}
.col-toggle-btn:hover{border-color:var(--green);color:var(--text);}
.col-toggle-menu{display:none;position:fixed;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:8px;z-index:9999;min-width:200px;box-shadow:0 8px 24px rgba(0,0,0,0.4);display:none;flex-direction:column;gap:2px;}
.col-toggle-menu.open{display:flex;}
.col-toggle-menu .col-item{display:flex;align-items:center;justify-content:flex-start;text-align:left;gap:10px;padding:6px 10px;font-size:12px;color:var(--text-dim);cursor:pointer;border-radius:4px;width:100%;box-sizing:border-box;}
.col-toggle-menu .col-item:hover{background:var(--surface2);color:var(--text);}
.col-toggle-menu .col-item input{accent-color:var(--green);cursor:pointer;margin:0;flex-shrink:0;}
.col-toggle-menu .col-item.disabled{opacity:0.4;cursor:not-allowed;}
.col-toggle-menu .col-item.disabled input{cursor:not-allowed;}
.col-toggle-menu .col-divider{height:1px;background:var(--border);margin:4px 0;flex-shrink:0;}
.col-type-badge{display:inline-block;padding:1px 6px;border-radius:4px;font-size:10px;font-weight:600;}
.col-type-badge.serial{background:rgba(245,166,35,0.15);color:var(--warn);}
.col-type-badge.lot{background:rgba(61,127,255,0.15);color:var(--accent);}
.col-type-badge.none{background:rgba(136,144,168,0.15);color:var(--text-dim);}
.col-ok{color:var(--green);font-weight:700;}
.col-nok{color:var(--error);font-weight:700;}
.col-bom-yes{color:var(--green);}
.col-bom-no{color:var(--text-muted);}
.empty-state{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-muted);text-align:center;}
.empty-state svg{width:64px;height:64px;opacity:0.3;}
.loading-state{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-dim);}
.spinner{width:15px;height:15px;border:2px solid rgba(255,255,255,0.2);border-top-color:#fff;border-radius:50%;animation:spin 0.6s linear infinite;display:inline-block;}
.spinner-lg{width:28px;height:28px;border-width:3px;border-top-color:var(--green);display:block;}
@keyframes spin{to{transform:rotate(360deg);}}
.spinner.show{display:block;}

/* TAB 2 - STOK KODU OLUSTURUCU */
.layout{display:flex;flex:1;overflow:hidden;min-height:0;}
.col-left{width:320px;min-width:300px;flex-shrink:0;border-right:1px solid var(--border);padding:22px 20px;display:flex;flex-direction:column;gap:16px;overflow-y:auto;-webkit-overflow-scrolling:touch;}
.col-mid{flex:1 1 auto;display:flex;flex-direction:column;overflow:hidden;min-width:240px;min-height:0;}
@media (max-width:1000px){
  .layout{flex-direction:column;overflow-y:auto;}
  .col-left,.col-mid{width:100%;min-width:0;flex:none;border-right:none;border-left:none;border-bottom:1px solid var(--border);overflow:visible;}
  .col-mid{min-height:340px;}
  .mid-body{max-height:420px;}
}
.label{font-size:11px;font-weight:700;letter-spacing:0.12em;color:var(--text-muted);text-transform:uppercase;margin-bottom:8px;}
.tedarik-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;}
.tedarik-btn{position:relative;}
.tedarik-btn input{position:absolute;opacity:0;width:0;height:0;}
.tedarik-btn label{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);cursor:pointer;transition:all 0.15s;}
.tedarik-btn label:hover{border-color:var(--green);}
.tedarik-btn input:checked+label{border-color:var(--green);background:var(--green-glow);}
.td-letter{font-family:var(--mono);font-size:19px;font-weight:700;color:var(--green);}
.td-name{font-size:9px;color:var(--text-dim);font-weight:600;}
select{width:100%;max-width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:13.5px;padding:11px 34px 11px 12px;appearance:none;cursor:pointer;transition:border-color 0.15s;text-overflow:ellipsis;white-space:nowrap;overflow:hidden;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234a5168' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;}
select:focus{outline:none;border-color:var(--green);}
select option{background:#1a1d26;color:#e8eaf0;}
select:disabled{opacity:0.4;cursor:not-allowed;}
input[type="text"],input[type="password"]{width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:14px;padding:10px 12px;transition:border-color 0.15s;}
input:focus{outline:none;border-color:var(--green);}
input::placeholder{color:var(--text-muted);}
.code-preview{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;text-align:center;}
.code-display{font-family:var(--mono);font-size:22px;font-weight:700;letter-spacing:0.08em;min-height:32px;display:flex;align-items:center;justify-content:center;}
.c-t{color:var(--green);}.c-ss{color:var(--accent);}.c-aaa{color:var(--warn);}
.c-nnn{color:var(--text-muted);}.c-nnn.filled{color:var(--green);}
.c-dim{color:var(--text-muted);}.c-sep{color:var(--text-muted);margin:0 1px;}
.copy-btn{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--text-muted);cursor:pointer;padding:4px 8px;border-radius:4px;border:1px solid var(--border);background:none;margin-top:8px;transition:all 0.15s;}
.copy-btn:hover{color:var(--green);border-color:var(--green);}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all 0.15s;}
.btn-primary{background:var(--green);color:#fff;width:100%;}
.btn-primary:hover:not(:disabled){background:var(--green-dim);}
.btn-primary:disabled{opacity:0.4;cursor:not-allowed;}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border);width:100%;}
.btn-secondary:hover{border-color:var(--green);color:var(--green);}
.divider{height:1px;background:var(--border);}
.mid-header{padding:18px 24px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;}
.mid-title{font-size:15px;font-weight:700;display:flex;align-items:center;gap:10px;}
.mid-badge{font-family:var(--mono);font-size:12px;color:var(--green);background:var(--green-glow);padding:3px 10px;border-radius:20px;}
.mid-count{font-size:12px;color:var(--text-dim);}
.mid-body{flex:1;overflow:auto;padding:16px 24px;min-height:0;-webkit-overflow-scrolling:touch;touch-action:pan-y;}
.qr-box{background:#fff;border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;align-items:center;gap:8px;border:1px solid var(--border);}
.qr-canvas{width:140px;height:140px;display:flex;align-items:center;justify-content:center;}
.qr-canvas img,.qr-canvas canvas{width:140px!important;height:140px!important;}
.qr-code-text{font-family:var(--mono);font-size:13px;font-weight:700;color:#0f1117;letter-spacing:0.04em;}
.qr-hint{font-size:10px;color:#8890a8;letter-spacing:0.1em;text-transform:uppercase;}
.result-box{border-radius:var(--radius);padding:14px;border:1px solid var(--border);display:none;}
.result-box.show{display:block;}
.result-box.success{border-color:var(--green);background:var(--green-glow);}
.result-box.warn{border-color:var(--warn);background:rgba(245,166,35,0.08);}
.result-box.error{border-color:var(--error);background:rgba(232,64,64,0.08);}
.result-box-title{font-size:11px;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:8px;}
.result-box.success .result-box-title{color:var(--green);}
.result-box.warn .result-box-title{color:var(--warn);}
.result-box.error .result-box-title{color:var(--error);}
.result-box-code{font-family:var(--mono);font-size:16px;font-weight:700;color:var(--text);}

/* LOGIN */
.login-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:9999;}
.login-overlay.hidden{display:none;}
.login-box{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:36px 40px;width:380px;max-width:90vw;box-shadow:0 24px 48px rgba(0,0,0,0.5);}
.login-box h2{font-size:18px;font-weight:700;margin-bottom:4px;}
.login-box p{font-size:12px;color:var(--text-muted);margin-bottom:24px;}
.login-box label{display:block;font-size:11px;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.08em;margin-bottom:6px;}
.login-box input{width:100%;padding:10px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:14px;margin-bottom:16px;}
.login-box input:focus{outline:none;border-color:var(--green);}
.login-box button{width:100%;padding:12px;border-radius:var(--radius);border:none;background:var(--green);color:#fff;font-size:14px;font-weight:700;cursor:pointer;}
.login-box button:hover{background:var(--green-dim);}
.login-error{color:var(--error);font-size:12px;margin-top:12px;text-align:center;display:none;}
.login-user{font-size:12px;color:var(--text-dim);display:flex;align-items:center;gap:6px;}
.login-user svg{width:14px;height:14px;}
.login-user-logout{cursor:pointer;color:var(--text-muted);text-decoration:underline;font-size:11px;margin-left:8px;}

.rez-table{width:100%;border-collapse:collapse;font-size:11px;}
.rez-table thead th{text-align:left;font-size:9px;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;color:var(--text-muted);padding:5px 8px;border-bottom:1px solid var(--border);white-space:nowrap;}
.rez-table tbody tr{border-bottom:1px solid var(--border);}
.rez-table tbody tr:hover{background:var(--green-glow);}
.rez-table td{padding:4px 8px;font-size:11px;}
.rez-code{font-family:var(--mono);font-weight:700;color:var(--green);}

.table-scroll-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  position: relative;
}

/* MOBIL UYUMLULUK */
@media (max-width:900px){
  nav{position:relative;height:auto;min-height:48px;padding:0 12px;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:0;scrollbar-width:none;}
  nav::-webkit-scrollbar{display:none;}
  nav::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 24px;
    background: linear-gradient(to right, transparent, var(--bg));
    pointer-events: none;
  }
  .nav-brand{margin-right:12px;flex-shrink:0;}
  .nav-brand h1{font-size:14px;}
  .nav-tab{padding:0 12px;height:48px;font-size:12px;flex-shrink:0;}
  .nav-right{flex-shrink:0;margin-left:auto;padding-left:8px;}
  .nav-version{display:none;}
  .login-user span:first-of-type{max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .urun-header,.mid-header{padding:14px 16px 12px;flex-wrap:wrap;gap:10px;}
  .urun-title,.mid-title{font-size:15px;}
  .urun-actions{width:100%;justify-content:flex-start;flex-wrap:wrap;}
  .urun-count{width:100%;margin-bottom:4px;}
  /* Mobil: tab-content ve layout yüksekliği ekranı doldursun */
  .tab-content.active{min-height:calc(100dvh - 48px);}
  .urun-layout{min-height:calc(100dvh - 48px);}
  
  .filter-toggle-btn {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    user-select: none;
  }
  .urun-filters {
    display: block;
    max-height: none !important;
    overflow-y: visible !important;
    transition: all 0.25s ease-in-out;
  }
  .urun-filters.collapsed {
    display: none !important;
  }
  
  .urun-filters > div{display:grid!important;grid-template-columns:repeat(auto-fill,minmax(140px,1fr))!important;gap:8px!important;align-items:stretch!important;}
  .urun-filters > div > div{width:100%!important;}
  .urun-filters input,.urun-filters select{width:100%!important;}
  .urun-filters button{width:100%!important;justify-content:center;}
  
  .urun-body {
    min-height: 0;
    flex: 1 1 auto;
    padding: 6px 12px 16px;
    overflow-y: auto;
  }
  .urun-layout {
    flex: 1 1 auto;
    overflow: hidden;
  }
  .urun-table thead th {
    position: static !important;
  }
  
  .mid-body{padding:12px 12px 16px;min-height:0;touch-action:pan-y;overscroll-behavior:contain;}
  .pagination-bar{flex-direction:column;align-items:stretch !important;gap:8px;padding:8px 12px;flex-shrink:0;}
  .pagination-controls{flex-wrap:wrap;justify-content:center;}
  .col-toggle{margin-left:0!important;width:100%;position:static;}
  /* Mobilde sütunlar menüsü: viewport ortasından yukarı açılan bottom sheet */
  .col-toggle-menu{
    position:fixed;
    bottom:0;
    left:0;
    right:0;
    top:auto;
    background:var(--surface);
    border-top:1px solid var(--border);
    max-height:70vh;
    overflow-y:auto;
    border-radius:12px 12px 0 0;
    margin:0;
    z-index:9999;
    box-shadow:0 -8px 32px rgba(0,0,0,0.6);
    padding:12px 8px 24px;
  }
  .col-toggle-menu.open{display:block;}
  .login-box{padding:28px 24px;width:100%;max-width:100%;margin:16px;border-radius:12px;}
}
@media (max-width:600px){
  body{font-size:13px;}
  .urun-filters > div{grid-template-columns:1fr!important;}
  .tedarik-grid{grid-template-columns:repeat(2,1fr)!important;}
  .urun-actions button{font-size:12px;padding:8px 12px;}
  .btn{font-size:13px;padding:10px 14px;}
  .urun-table td,.urun-table thead th{font-size:11px;padding:6px;}
  .mid-title{flex-wrap:wrap;}
  .toast-container{top:auto;bottom:16px;left:16px;right:16px;max-width:none;}
}
@media (max-width:380px){
  .nav-tab{padding:0 10px;font-size:11px;}
  .nav-brand h1{font-size:13px;}
  .login-user span:first-of-type{max-width:60px;}
}