/* ===== Genel ===== */
:root {
    --primary: #007BFF;
    --primary-dark: #0062cc;
    --sidebar: #0b2559;
    --bg: #f5f7fb;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
}
* { box-sizing: border-box; }
img { max-width: 100%; }
body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
}
a { color: var(--primary); text-decoration: none; }
.muted { color: var(--muted); }

/* ===== Yerleşim ===== */
.sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    width: 260px; background: var(--sidebar); color: #fff;
    overflow-y: auto; z-index: 1000; transition: transform .25s;
}
.sidebar-brand { padding: 20px; font-size: 20px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar-nav { padding: 10px 0 30px; }
.nav-title { padding: 16px 20px 6px; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: #9db1de; }
.nav-link { display: block; padding: 10px 20px 10px 28px; color: #dbe5ff; border-left: 3px solid transparent; }
.nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-link.active { background: rgba(0,123,255,.25); border-left-color: var(--primary); color: #fff; font-weight: 600; }
.nav-logout { margin-top: 20px; }
.main { margin-left: 260px; min-height: 100vh; }
.topbar {
    display: flex; align-items: center; gap: 12px;
    background: #fff; padding: 12px 24px; border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 900;
}
.topbar-title { margin: 0; font-size: 18px; flex: 1; }
.topbar-user { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.hamburger { display: none; background: none; border: 0; font-size: 26px; cursor: pointer; color: var(--text); }
.content { padding: 24px; }
.overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 999; }

/* ===== Kartlar ===== */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 10px; padding: 18px; box-shadow: 0 1px 3px rgba(0,0,0,.08); border-left: 4px solid var(--primary); }
.stat-card.danger { border-left-color: var(--danger); }
.stat-card.success { border-left-color: var(--success); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-label { color: var(--muted); font-size: 13px; }
.stat-value { font-size: 26px; font-weight: 700; margin-top: 4px; }
.card { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); margin-bottom: 24px; }
.card h3 { margin: 0 0 14px; font-size: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 20px; }
.chart-box { position: relative; height: 280px; }

/* ===== Tablolar ===== */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 520px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
th { background: #f9fafb; font-weight: 600; white-space: nowrap; }
tr:hover td { background: #fafcff; }

/* ===== Formlar ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 14px; }
input[type=text], input[type=password], input[type=number], input[type=email],
input[type=date], input[type=file], select, textarea {
    width: 100%; padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 8px;
    font-size: 15px; font-family: inherit; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,123,255,.15); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }

/* ===== Butonlar ===== */
.btn { display: inline-block; padding: 9px 16px; border: 0; border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 600; color: #fff; background: #6b7280; }
.btn-primary { background: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); }
.btn-danger { background: var(--danger); }
.btn-warning { background: var(--warning); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-block { display: block; width: 100%; }

/* ===== Uyarılar ve rozetler ===== */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; border: 1px solid; }
.alert-success { background: #dcfce7; border-color: #86efac; color: #166534; }
.alert-error   { background: #fee2e2; border-color: #fca5a5; color: #991b1b; }
.alert-warning { background: #ffedd5; border-color: #fdba74; color: #9a3412; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; color: #fff; }
.badge-success { background: var(--success); }
.badge-warning { background: var(--warning); }
.badge-danger  { background: var(--danger); }
.badge-primary { background: var(--primary); }
.badge-gray    { background: #6b7280; }

/* ===== Giriş sayfası ===== */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 16px; background: linear-gradient(135deg, #0b2559, #007BFF); }
.login-box { background: #fff; width: 100%; max-width: 380px; padding: 32px; border-radius: 14px; box-shadow: 0 10px 30px rgba(0,0,0,.25); }
.login-box h1 { margin: 0 0 4px; text-align: center; }
.login-box p { text-align: center; margin: 0 0 20px; }

/* ===== Mobil ===== */
@media (max-width: 900px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .overlay.show { display: block; }
    .main { margin-left: 0; }
    .hamburger { display: block; }
    .content { padding: 14px; }
    .topbar { padding: 10px 14px; }
    .topbar-user span:first-child { display: none; }
    .grid-2 { grid-template-columns: 1fr; }
    .btn { padding: 10px 14px; }
}

/* ===== Aşama 2: Araç çubuğu, arama, sayfalama, resim ===== */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.search-form { display: flex; gap: 8px; flex: 1; min-width: 220px; }
.search-form input[type=text] { max-width: 320px; }

.pagination { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-top: 16px; }
.pagination-info { color: var(--muted); font-size: 13px; }
.pagination-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.pp-form select { padding: 6px 10px; border-radius: 6px; border: 1px solid #d1d5db; }
.pagination-pages { display: flex; gap: 4px; flex-wrap: wrap; }
.page-link { padding: 6px 12px; border-radius: 6px; border: 1px solid #d1d5db; color: var(--text); }
.page-link.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.product-thumb { width: 42px; height: 42px; object-fit: contain; border-radius: 6px; border: 1px solid var(--border); background: #f3f4f6; }
.product-thumb-lg { width: 160px; height: 160px; object-fit: contain; border-radius: 10px; border: 1px solid var(--border); background: #f3f4f6; }
.detail-grid { display: grid; grid-template-columns: 160px 1fr; gap: 24px; align-items: start; }
@media (max-width: 700px) { .detail-grid { grid-template-columns: 1fr; } }

.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.info-list li span:first-child { color: var(--muted); }

.tag { display: inline-block; padding: 2px 10px; border-radius: 20px; background: #e5edff; color: var(--primary); font-size: 12px; font-weight: 600; }
.actions-cell { white-space: nowrap; display: flex; gap: 6px; }
.text-right { text-align: right; }

/* ===== Aşama 3: Stok işlemleri ===== */
.hint { font-size: 13px; margin-top: 6px; color: var(--muted); }
.hint.ok { color: var(--success); font-weight: 600; }
.hint.low { color: var(--danger); font-weight: 600; }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; border-bottom: 1px solid var(--border); }
.tab-btn { padding: 10px 16px; border: 0; background: none; cursor: pointer; font-size: 14px; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ===== Aşama 4: Rapor yazdırma ===== */
.print-only { display: none; }
@media print {
    .sidebar, .topbar, .toolbar, .overlay, .report-actions, .pagination, .no-print { display: none !important; }
    .main { margin-left: 0; }
    body { background: #fff; }
    .card { box-shadow: none; border: none; padding: 0; margin-bottom: 20px; }
    .content { padding: 0; }
    .print-only { display: block !important; }
}
.signature-box { display: flex; justify-content: space-between; margin-top: 50px; }
.signature-box div { width: 45%; text-align: center; border-top: 1px solid #000; padding-top: 8px; }