/* admin.css — หลังบ้านของแอดมินระบบ (/admin-system)
   ใช้ธีมเข้มเพื่อให้แยกออกจากระบบของเจ้าของหอพักตั้งแต่แรกเห็น */

:root {
	--bg: #0b1418;
	--panel: #121e23;
	--panel-2: #16252b;
	--line: rgba(255, 255, 255, .09);
	--text: #e6eef0;
	--muted: #8fa5ab;
	--teal: #26a69a;
	--teal-dark: #00695c;
	--gold: #c8a951;
	--danger: #ef5350;
	--radius: 14px;
}

* { box-sizing: border-box; }

body {
	margin: 0;
	background: radial-gradient(900px 500px at 80% -10%, rgba(38, 166, 154, .14), transparent 60%), var(--bg);
	color: var(--text);
	font-family: 'Sarabun', 'Leelawadee UI', 'Noto Sans Thai', -apple-system, 'Segoe UI', Tahoma, sans-serif;
	line-height: 1.6;
	min-height: 100vh;
}

a { color: var(--teal); text-decoration: none; }
h1, h2, h3 { margin: 0 0 .4em; line-height: 1.3; }

.wrap { width: min(1240px, calc(100% - 32px)); margin: 0 auto; }
.hidden { display: none !important; }

/* ---------------- แถบบน ---------------- */

.topbar {
	border-bottom: 1px solid var(--line);
	background: rgba(11, 20, 24, .86);
	backdrop-filter: blur(10px);
	position: sticky;
	top: 0;
	z-index: 20;
}
.topbar-inner { display: flex; align-items: center; gap: 14px; height: 66px; }
.topbar .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: #fff; }
.topbar .brand img { width: 30px; height: 30px; }
.topbar .brand small { display: block; font-size: 11px; font-weight: 500; color: var(--gold); letter-spacing: .06em; }
.topbar .spacer { margin-left: auto; }
.topbar .who { color: var(--muted); font-size: 14px; }

/* ---------------- ปุ่ม ---------------- */

.btn {
	display: inline-flex;
	align-items: center;
	gap: 7px;
	padding: 9px 16px;
	border-radius: 10px;
	border: 1px solid var(--line);
	background: var(--panel-2);
	color: var(--text);
	font: inherit;
	font-size: 14px;
	font-weight: 600;
	cursor: pointer;
	transition: background .15s ease, border-color .15s ease, transform .15s ease;
}
.btn:hover { border-color: rgba(38, 166, 154, .5); transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--teal), var(--teal-dark)); border-color: transparent; color: #fff; }
.btn-danger { color: #ffb4b0; border-color: rgba(239, 83, 80, .4); }
.btn-danger:hover { background: rgba(239, 83, 80, .14); border-color: var(--danger); }
.btn-sm { padding: 6px 11px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------------- หน้าเข้าสู่ระบบของแอดมิน ---------------- */

.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 30px 16px; }
.login-card {
	width: min(420px, 100%);
	background: linear-gradient(180deg, var(--panel), var(--panel-2));
	border: 1px solid var(--line);
	border-radius: 20px;
	padding: 34px 32px;
	box-shadow: 0 30px 70px rgba(0, 0, 0, .45);
}
.login-card .brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; font-weight: 700; }
.login-card .brand img { width: 34px; height: 34px; }
.login-card .brand small { display: block; font-size: 11px; color: var(--gold); font-weight: 500; letter-spacing: .06em; }
.login-card h1 { font-size: 21px; }
.login-card .sub { color: var(--muted); font-size: 14.5px; margin: 0 0 22px; }
.login-card .back { display: block; text-align: center; margin-top: 18px; font-size: 14px; color: var(--muted); }

/* ---------------- ฟอร์ม ---------------- */

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13.5px; color: var(--muted); font-weight: 600; margin-bottom: 6px; }
.field input, .field select {
	width: 100%;
	padding: 11px 13px;
	border-radius: 10px;
	border: 1px solid var(--line);
	background: #0d181c;
	color: var(--text);
	font: inherit;
	font-size: 14.5px;
}
.field input:focus, .field select:focus {
	outline: none;
	border-color: var(--teal);
	box-shadow: 0 0 0 3px rgba(38, 166, 154, .16);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.msg { display: none; padding: 11px 13px; border-radius: 10px; font-size: 14px; margin-bottom: 14px; }
.msg.error { display: block; background: rgba(239, 83, 80, .14); border: 1px solid rgba(239, 83, 80, .4); color: #ffb4b0; }
.msg.ok { display: block; background: rgba(38, 166, 154, .14); border: 1px solid rgba(38, 166, 154, .4); color: #9fe6da; }

/* ---------------- เนื้อหาหลัก ---------------- */

.page { padding: 26px 0 60px; }
.page-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.page-head h1 { font-size: 22px; margin: 0; }
.page-head .sub { color: var(--muted); font-size: 14px; }
.page-head .spacer { margin-left: auto; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 26px; }
.stat {
	background: linear-gradient(180deg, var(--panel), var(--panel-2));
	border: 1px solid var(--line);
	border-radius: var(--radius);
	padding: 16px 18px;
}
.stat small { display: block; color: var(--muted); font-size: 12.5px; }
.stat b { font-size: 24px; letter-spacing: -.02em; }
.stat.teal b { color: #7fd8cc; }
.stat.gold b { color: var(--gold); }
.stat.danger b { color: #ff9d99; }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.tab {
	padding: 9px 18px;
	border-radius: 999px;
	border: 1px solid var(--line);
	background: transparent;
	color: var(--muted);
	font: inherit;
	font-size: 14.5px;
	font-weight: 600;
	cursor: pointer;
}
.tab.active { background: rgba(38, 166, 154, .16); border-color: rgba(38, 166, 154, .5); color: #9fe6da; }

.panel {
	background: linear-gradient(180deg, var(--panel), var(--panel-2));
	border: 1px solid var(--line);
	border-radius: var(--radius);
	overflow: hidden;
}

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 860px; }
thead th {
	text-align: left;
	padding: 13px 16px;
	font-size: 12.5px;
	letter-spacing: .04em;
	text-transform: uppercase;
	color: var(--muted);
	border-bottom: 1px solid var(--line);
	white-space: nowrap;
}
tbody td { padding: 13px 16px; border-bottom: 1px solid rgba(255, 255, 255, .05); vertical-align: middle; }
tbody tr:hover { background: rgba(255, 255, 255, .03); }
tbody td.actions { white-space: nowrap; display: flex; gap: 6px; flex-wrap: wrap; }
td .who-name { font-weight: 600; }
td .who-login { color: var(--muted); font-size: 13px; }

.pill {
	display: inline-block;
	padding: 3px 10px;
	border-radius: 999px;
	font-size: 12.5px;
	font-weight: 600;
	border: 1px solid transparent;
}
.pill-owner { background: rgba(38, 166, 154, .14); color: #8fded1; border-color: rgba(38, 166, 154, .35); }
.pill-admin { background: rgba(200, 169, 81, .16); color: #ecd79a; border-color: rgba(200, 169, 81, .4); }
.pill-active { background: rgba(102, 187, 106, .14); color: #a5d6a7; border-color: rgba(102, 187, 106, .35); }
.pill-suspended { background: rgba(239, 83, 80, .14); color: #ffb4b0; border-color: rgba(239, 83, 80, .4); }

.empty { padding: 40px 20px; text-align: center; color: var(--muted); }

/* ---------------- กล่องโต้ตอบ ---------------- */

.modal-mask {
	position: fixed;
	inset: 0;
	background: rgba(4, 10, 12, .7);
	backdrop-filter: blur(3px);
	display: grid;
	place-items: center;
	padding: 20px;
	z-index: 60;
}
.modal {
	width: min(460px, 100%);
	background: linear-gradient(180deg, var(--panel), var(--panel-2));
	border: 1px solid var(--line);
	border-radius: 18px;
	padding: 26px 26px 22px;
	box-shadow: 0 30px 70px rgba(0, 0, 0, .5);
	max-height: 90vh;
	overflow: auto;
}
.modal h2 { font-size: 19px; }
.modal .sub { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.modal-actions { display: flex; gap: 10px; margin-top: 20px; }
.modal-actions .btn { flex: 1; justify-content: center; }

.toast {
	position: fixed;
	right: 18px;
	bottom: 18px;
	background: linear-gradient(135deg, var(--teal), var(--teal-dark));
	color: #fff;
	padding: 12px 18px;
	border-radius: 12px;
	font-size: 14.5px;
	font-weight: 600;
	box-shadow: 0 16px 36px rgba(0, 0, 0, .4);
	z-index: 80;
}

@media (max-width: 720px) {
	.topbar .who { display: none; }
	.field-row { grid-template-columns: 1fr; }
}