/* ==========================================================
   style.css — ธีมมินิมอล โทนสีฟ้า-ขาว (เรียบ เป็นทางการ)
   ระบบออมทรัพย์นักเรียน
   ========================================================== */

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --accent: #0ea5e9;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --info: #0284c7;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #eef2f8;
    --surface: #ffffff;
    --border: #e2e8f0;
    --sidebar-w: 260px;
    --radius: 12px;
    --shadow: 0 2px 10px rgba(30, 41, 59, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Kanit', 'Segoe UI', sans-serif;
    color: var(--text);
    min-height: 100vh;
    background: var(--bg);
}

a { text-decoration: none; color: inherit; }

/* ---------- โครงหน้า ---------- */
.layout { display: flex; min-height: 100vh; }

.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    margin-left: var(--sidebar-w);
    transition: margin-left .3s ease;
}

.content {
    flex: 1;
    padding: 24px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* ---------- การ์ด ---------- */
.glass {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.card { padding: 22px; margin-bottom: 20px; }
.card h2, .card h3 { margin-bottom: 14px; color: var(--primary-dark); font-weight: 600; }

/* ---------- Navbar ---------- */
.navbar {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: 14px;
    padding: 14px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}
.navbar .title { font-size: 1.15rem; font-weight: 700; color: var(--primary-dark); }
.navbar .spacer { flex: 1; }
.navbar .user-chip {
    display: flex; align-items: center; gap: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 6px 14px; border-radius: 999px; font-size: .9rem;
}
.navbar .user-chip .role {
    font-size: .72rem; padding: 2px 8px; border-radius: 999px;
    background: var(--primary); color: #fff;
}
.navbar .role.admin { background: var(--info); }

.menu-toggle {
    display: none; font-size: 1.5rem; cursor: pointer;
    background: none; border: none; color: var(--primary-dark);
}

/* ---------- Sidebar ---------- */
.sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w); z-index: 60;
    padding: 22px 16px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 6px;
    transition: transform .3s ease;
    overflow-y: auto;
}
.sidebar .brand {
    display: flex; align-items: center; gap: 12px;
    padding: 6px 10px 18px; font-weight: 700; font-size: 1.15rem;
    color: var(--primary-dark);
}
.sidebar .brand .logo {
    width: 42px; height: 42px; border-radius: 10px; flex-shrink: 0;
    display: grid; place-items: center; color: #fff; font-size: 1.3rem;
    background: var(--primary);
}
.sidebar a.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px; border-radius: 10px;
    color: var(--text); font-weight: 500; transition: all .2s;
}
.sidebar a.nav-item i { width: 22px; text-align: center; font-size: 1.05rem; }
.sidebar a.nav-item:hover { background: var(--bg); }
.sidebar a.nav-item.active {
    background: var(--primary);
    color: #fff;
}
.sidebar a.nav-item.active i { color: #fff; }

/* สีไอคอนแต่ละเมนู (ตอนยังไม่ active) */
.sidebar a.nav-item i.ic-blue   { color: #2563eb; }
.sidebar a.nav-item i.ic-teal   { color: #0d9488; }
.sidebar a.nav-item i.ic-green  { color: #16a34a; }
.sidebar a.nav-item i.ic-purple { color: #7c3aed; }
.sidebar a.nav-item i.ic-amber  { color: #d97706; }
.sidebar a.nav-item i.ic-rose   { color: #e11d48; }
.sidebar a.nav-item i.ic-slate  { color: #64748b; }
.sidebar a.nav-item i.ic-emerald{ color: #10b981; }
.sidebar .section-label {
    font-size: .72rem; text-transform: uppercase; letter-spacing: 1px;
    color: var(--text-light); padding: 14px 14px 4px;
}

/* ---------- Backdrop มือถือ ---------- */
.backdrop {
    display: none; position: fixed; inset: 0; z-index: 55;
    background: rgba(15, 23, 42, .35);
}
.backdrop.show { display: block; }

/* ---------- สถิติ ---------- */
.stat-grid {
    display: grid; gap: 18px;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    margin-bottom: 22px;
}
.stat {
    padding: 20px; display: flex; align-items: center; gap: 16px;
}
.stat .icon {
    width: 54px; height: 54px; border-radius: 12px; flex-shrink: 0;
    display: grid; place-items: center; color: #fff; font-size: 1.5rem;
}
.stat .icon.i1 { background: #2563eb; }
.stat .icon.i2 { background: #059669; }
.stat .icon.i3 { background: #16a34a; }
.stat .icon.i4 { background: #dc2626; }
.stat .label { font-size: .85rem; color: var(--text-light); }
.stat .value { font-size: 1.5rem; font-weight: 700; color: var(--text); }

/* ---------- ปุ่ม ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 18px; border: 1px solid transparent; border-radius: 10px;
    font-family: inherit; font-size: .95rem; font-weight: 600;
    color: #fff; cursor: pointer; transition: all .15s;
    background: var(--primary);
}
.btn:hover { background: var(--primary-dark); }
.btn.success { background: var(--success); }
.btn.success:hover { background: #15803d; }
.btn.danger  { background: var(--danger); }
.btn.danger:hover { background: #b91c1c; }
.btn.warning { background: var(--warning); }
.btn.warning:hover { background: #b45309; }
.btn.ghost   { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn.ghost:hover { background: var(--bg); }
.btn.sm { padding: 7px 12px; font-size: .85rem; }

/* ---------- ฟอร์ม ---------- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: .9rem; }
.form-control {
    width: 100%; padding: 12px 14px; font-family: inherit; font-size: 1rem;
    border: 1px solid var(--border); border-radius: 10px;
    background: var(--surface); color: var(--text); transition: all .15s;
}
.form-control:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); }

.password-wrap { position: relative; }
.password-wrap .form-control { padding-right: 96px; }
.password-toggle {
    position: absolute; top: 50%; right: 10px; transform: translateY(-50%);
    background: none; border: none; padding: 2px 0; cursor: pointer;
    font-size: .78rem; font-family: inherit; color: var(--text-light);
}
.password-toggle:hover { color: var(--text); text-decoration: underline; }

/* ---------- ตาราง ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 520px; }
thead th {
    text-align: left; padding: 14px 16px; font-size: .85rem;
    color: var(--primary-dark); background: var(--bg);
    position: sticky; top: 0;
}
tbody td { padding: 13px 16px; border-top: 1px solid var(--border); font-size: .92rem; }
tbody tr:hover { background: var(--bg); }
.text-end { text-align: right; }
.text-center { text-align: center; }

/* ---------- Badge ---------- */
.badge {
    display: inline-block; padding: 4px 10px; border-radius: 999px;
    font-size: .78rem; font-weight: 600;
}
.badge.green { background: rgba(22,163,74,.12); color: #15803d; }
.badge.red   { background: rgba(220,38,38,.12); color: #b91c1c; }
.badge.blue  { background: rgba(37,99,235,.1); color: var(--primary-dark); }

/* ---------- หน้า Login ---------- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-box { width: 100%; max-width: 400px; padding: 34px; text-align: center; }
.login-box .logo-big {
    width: 74px; height: 74px; margin: 0 auto 16px; border-radius: 16px;
    display: grid; place-items: center; color: #fff; font-size: 2.1rem;
    background: var(--primary);
}
.login-box h1 { font-size: 1.4rem; margin-bottom: 4px; color: var(--primary-dark); }
.login-box p.sub { color: var(--text-light); margin-bottom: 24px; font-size: .9rem; }
.login-box .form-control { text-align: center; }

.page-head {
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 20px;
}
.page-head h1 { font-size: 1.5rem; color: var(--primary-dark); font-weight: 700; }
.page-head .spacer { flex: 1; }

/* ---------- Footer ---------- */
.footer {
    text-align: center; padding: 18px; font-size: .85rem;
    color: var(--text-light);
}

/* ==========================================================
   Responsive — ไอแพด และมือถือ
   ========================================================== */
@media (max-width: 1024px) {
    :root { --sidebar-w: 230px; }
}

@media (max-width: 768px) {
    .main-area { margin-left: 0; }
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .menu-toggle { display: block; }
    .content { padding: 16px; }
    .navbar .title { font-size: 1rem; }
    .stat .value { font-size: 1.25rem; }
}

@media (max-width: 480px) {
    .navbar .user-chip .name { display: none; }
    .btn { padding: 9px 14px; font-size: .88rem; }
    .page-head h1 { font-size: 1.25rem; }
}