:root{
  /* branding.php'den _header.php ile override edilir */
  --bg: #f3f4f6;        /* sayfa zemini (yumuşak gri) */
  --card: #ffffff;      /* kart zemini */
  --text: #1f2937;      /* ana metin (koyu gri) */
  --accent: #3b82f6;    /* primary (orta mavi) */
  --accent-2: #6366f1;  /* secondary (mor-mavi) */

  /* yardımcı tonlar */
  --muted: #6b7280;     /* ikincil metin */
  --border: #e5e7eb;    /* kontur/border */
  --hover: #eef2ff;     /* satır hover */
  --shadow: 0 10px 28px rgba(0,0,0,.06);
  --shadow-strong: 0 16px 40px rgba(0,0,0,.10);

  /* durum renkleri */
  --ok: #16a34a;
  --warn: #f59e0b;
  --danger: #ef4444;
}

*{box-sizing:border-box}
html,body{height:100%}

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a{color:var(--accent); text-decoration:none}
a:hover{opacity:.9}

.container{max-width:1100px;margin:40px auto;padding:0 16px}

.card{
  background: var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:20px;
  box-shadow: var(--shadow);
}

/* Başlıklar */
h1,h2{margin:0 0 12px}
h1{font-size:24px; letter-spacing:.2px}
h2{font-size:18px; color:var(--muted)}

/* Form elemanları */
label{display:block;margin:12px 0 6px}
input, select, textarea{
  width:100%;
  padding:12px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  transition: box-shadow .15s ease, border-color .15s ease;
}
input[type=date]{padding:10px}
textarea{min-height:110px}
input:focus, select:focus, textarea:focus{
  outline: none;
  border-color: #c7d2fe;
  box-shadow: 0 0 0 4px rgba(99,102,241,.15);
}

/* Grid yardımcıları */
.row{display:flex;gap:16px;flex-wrap:wrap}
.col{flex:1 1 280px}

/* Butonlar */
.btn{
  display:inline-block;
  padding:10px 16px;
  border-radius:10px;
  border:1px solid transparent;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color:#fff;
  font-weight:600;
  cursor:pointer;
  transition: transform .06s ease, filter .2s ease, box-shadow .2s ease;
  box-shadow: 0 6px 14px rgba(59,130,246,.18);
}
.btn:hover{filter:brightness(1.05)}
.btn:active{transform:translateY(1px)}

.btn.secondary{
  background:#fff;
  color:var(--text);
  border:1px solid var(--border);
  box-shadow:none;
}
.btn.ok{background:var(--ok)}
.btn.warn{background:var(--warn); color:#1f2937}
.btn.danger{background:var(--danger)}

/* Tablo */
.table{width:100%;border-collapse:collapse;margin-top:12px;background:transparent}
.table th,.table td{
  border-bottom:1px solid var(--border);
  padding:10px;
  text-align:left;
  font-size:14px;
}
.table tr:hover td{background:var(--hover)}

/* Rozetler */
.badge{
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  border:1px solid var(--border);
  background:#eef2ff;
  color:#334155;
}
.badge.ok{background:#ecfdf5; border-color:#bbf7d0; color:#065f46}
.badge.danger{background:#fef2f2; border-color:#fecaca; color:#7f1d1d}
.badge.warn{background:#fffbeb; border-color:#fde68a; color:#78350f}

/* Üst bar ve navigasyon */
.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.nav{display:flex; gap:12px; align-items:center}
.nav a{padding:6px 8px;border-radius:8px}
.nav a:hover{background:#eef2ff}
.menu-btn{display:none}

/* Mobil navigasyon (menu toggle _header.php'de) */
@media (max-width: 640px){
  .header{flex-direction:column; align-items:flex-start; gap:10px}
  .nav{display:none; flex-direction:column; gap:0; width:100%}
  .nav.open{display:block}
  .nav a{display:block; padding:10px 0; border-top:1px solid var(--border); border-radius:0}
  .menu-btn{display:inline-block}
}

/* Uyarı kutusu */
.alert{
  padding:10px 12px;
  border-radius:10px;
  background:#eff6ff;
  border:1px solid #bfdbfe;
  color:#1e3a8a;
  margin-bottom:12px
}

/* Dashboard KPI panoları */
.board{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width: 900px){.board{grid-template-columns:repeat(2,1fr)}}
@media(max-width: 520px){.board{grid-template-columns:1fr}}

.kpi{
  padding:16px;border-radius:16px;
  border:1px solid var(--border);
  background:#fff;
  box-shadow: var(--shadow);
}
.kpi .label{font-size:12px;color:var(--muted);margin-bottom:6px}
.kpi .value{font-size:28px;font-weight:800}
.kpi.ok{box-shadow: var(--shadow-strong)}
.kpi.warn{box-shadow: var(--shadow-strong)}
.kpi.danger{box-shadow: var(--shadow-strong)}
.kpi.info{box-shadow: var(--shadow)}

/* Dashboard liste alanı */
.list .row{
  display:grid;
  grid-template-columns: 1.2fr .9fr .9fr .8fr .8fr .6fr;
  gap:8px;
  padding:10px 0;
  border-bottom:1px solid var(--border)
}
@media(max-width: 900px){.list .row{grid-template-columns: 1fr 1fr .8fr .8fr}}
.list .head{color:var(--muted);font-size:12px}

/* Ufak yardımcı sınıflar */
.muted{color:var(--muted)}
.clock{font-variant-numeric:tabular-nums; font-weight:700}
.footer{opacity:.7;margin-top:24px;font-size:12px}

/* Görsel iyileştirmeler */
.logo img{box-shadow: 0 2px 8px rgba(0,0,0,.08); border-radius:8px}