/* =====================================================================
   PROKA Insight System - site.css
   design.md v2 token'larindan tureti (renk/tipografi/layout)
   ===================================================================== */
:root {
    --primary: #2563eb;
    --primary-container: #dbeafe;
    --navy: #1e293b;
    --canvas: #f8fafc;
    --card: #ffffff;
    --border: #e2e8f0;
    --on-surface: #0f172a;
    --on-variant: #64748b;
    --success: #16a34a;
    --warning: #ea580c;
    --danger: #dc2626;
    --radius: 8px;
    --radius-lg: 16px;
    --shadow-1: 0 4px 6px -1px rgba(0,0,0,.05);
    --shadow-2: 0 10px 15px -3px rgba(0,0,0,.1);
    --sidebar-w: 260px;
    --topbar-h: 64px;
    font-family: 'Inter', -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: 'Inter', -apple-system, Segoe UI, Roboto, sans-serif; color: var(--on-surface); background: var(--canvas); }
a { text-decoration: none; color: inherit; }

/* ---------- Login ---------- */
.login-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: var(--navy);
}
.login-card {
    width: 380px; background: var(--card); border-radius: var(--radius-lg);
    padding: 40px 36px; box-shadow: var(--shadow-2);
}
.login-brand { text-align: center; margin-bottom: 28px; }
.login-logo { font-size: 32px; font-weight: 800; letter-spacing: 2px; color: var(--navy); }
.login-sub { font-size: 13px; color: var(--on-variant); margin-top: 4px; }
.field-label { display: block; font-size: 12px; font-weight: 600; text-transform: uppercase;
    letter-spacing: .04em; color: var(--on-variant); margin: 14px 0 6px; }
.field-input {
    width: 100%; height: 42px; padding: 0 12px; border: 1px solid var(--border);
    border-radius: var(--radius); font-size: 14px; outline: none; transition: border .15s, box-shadow .15s;
}
.field-input:focus { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-container); }
.login-btn { width: 100%; margin-top: 22px; height: 44px; }
.login-error {
    background: #fee2e2; color: #991b1b; border-radius: var(--radius);
    padding: 10px 14px; font-size: 13px; margin-bottom: 8px;
}
.login-note { font-size: 12px; color: var(--on-variant); text-align: center; margin-top: 18px; }

/* ---------- Buttons ---------- */
.btn-primary {
    background: var(--primary); color: #fff; border: none; border-radius: var(--radius);
    font-size: 14px; font-weight: 600; cursor: pointer; padding: 0 18px; height: 40px;
}
.btn-primary:hover { background: #1d4ed8; }
.btn-secondary {
    background: #fff; color: var(--navy); border: 1px solid var(--border);
    border-radius: var(--radius); font-size: 14px; cursor: pointer; padding: 0 16px; height: 40px;
    display: inline-flex; align-items: center;
}
.btn-secondary:hover { border-color: #cbd5e1; }
.btn-sm { height: 32px; font-size: 13px; padding: 0 12px; }

/* ---------- App shell ---------- */
.app-body { display: flex; min-height: 100vh; }
.sidebar {
    width: var(--sidebar-w); flex: 0 0 var(--sidebar-w); background: var(--navy);
    color: #cbd5e1; display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar-logo { font-size: 24px; font-weight: 800; letter-spacing: 2px; color: #fff; padding: 24px; }
.sidebar-nav { flex: 1; padding: 8px; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
    display: block; padding: 11px 16px; border-radius: var(--radius); color: #94a3b8;
    font-size: 14px; font-weight: 500; position: relative;
}
.nav-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-item.active::before {
    content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px;
    background: #fff; border-radius: 2px;
}
.sidebar-footer { padding: 16px 24px; font-size: 11px; color: #64748b; line-height: 1.5; }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
    height: var(--topbar-h); background: #fff; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between; padding: 0 24px; position: sticky; top: 0; z-index: 10;
}
.topbar-title { font-size: 18px; font-weight: 600; color: var(--navy); }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.tenant-chip {
    background: var(--primary-container); color: #1e40af; font-size: 12px; font-weight: 600;
    padding: 4px 12px; border-radius: 9999px;
}
.user-name { font-size: 14px; color: var(--on-variant); }

.content { padding: 24px; max-width: 1180px; width: 100%; }
.page-footer { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--border);
    font-size: 12px; color: var(--on-variant); text-align: center; }

/* ---------- Cards / grid ---------- */
.page-head { margin-bottom: 20px; }
.page-head h1 { font-size: 24px; font-weight: 700; color: var(--navy); margin: 0 0 4px; }
.page-head p { font-size: 14px; color: var(--on-variant); margin: 0; }

.kpi-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 20px; }
.card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow-1); padding: 18px;
}
.kpi-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--on-variant); }
.kpi-value { font-size: 28px; font-weight: 700; color: var(--on-surface); margin: 6px 0 4px; }
.kpi-delta { font-size: 12px; }
.kpi-delta.up { color: var(--success); }
.kpi-delta.down { color: var(--danger); }

.section-title { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
    color: var(--primary); margin: 32px 0 12px; }
.card-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.placeholder-card { color: var(--on-variant); font-size: 14px; padding: 40px; text-align: center;
    border: 1px dashed var(--border); border-radius: var(--radius); background: #fff; }

/* ---------- Tables / chips (veri yönetimi) ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { text-align: left; text-transform: uppercase; letter-spacing: .04em; font-size: 11px;
    color: var(--on-variant); background: var(--canvas); padding: 10px 12px; border-bottom: 1px solid var(--border); }
.data-table td { padding: 11px 12px; border-bottom: 1px solid #f1f5f9; }
.data-table tr:hover td { background: var(--canvas); }
.muted { color: var(--on-variant); }
.err-text { color: var(--danger); }
.headline-sm { font-size: 16px; font-weight: 600; color: var(--navy); }
.chip { display: inline-block; padding: 3px 10px; border-radius: 9999px; font-size: 12px; font-weight: 600; }
.chip-ok { background: #dcfce7; color: #166534; }
.chip-warn { background: #ffedd5; color: #9a3412; }
.chip-err { background: #fee2e2; color: #991b1b; }
.chip-info { background: var(--primary-container); color: #1e40af; }
.topbar-link { font-size: 13px; color: var(--primary); font-weight: 600; }
.ok-banner { background: #dcfce7; color: #166534; border-radius: var(--radius); padding: 12px 16px; font-size: 14px; font-weight: 600; }