:root {
    --bg-color: #eef3f6;
    --card-bg: #ffffff;
    --surface-soft: #f6f9fa;
    --text-color: #172b35;
    --muted-color: #71818a;
    --border-color: #dbe5e8;
    --accent-blue: #117c8a;
    --accent-blue-soft: #dff1f1;
    --accent-green: #1d9b72;
    --danger-red: #c54d57;
    --shadow: 0 14px 40px rgba(27, 57, 66, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    min-height: 100vh;
    font-family: "DM Sans", "Avenir Next", sans-serif;
    background: radial-gradient(circle at 88% 0%, #d9eeee 0, transparent 28%), var(--bg-color);
    color: var(--text-color);
    padding: 30px clamp(16px, 4vw, 64px) 56px;
}
button, input, select { font: inherit; }
button { transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease; }
button:hover { transform: translateY(-1px); }

.auth-locked > *:not(.login-screen) { display: none !important; }
.login-screen { display: none; min-height: calc(100vh - 86px); place-items: center; align-content: center; gap: 18px; }
.auth-locked .login-screen { display: grid; }
.login-panel { width: min(100%, 430px); background: rgba(255, 255, 255, .96); border: 1px solid var(--border-color); border-radius: 18px; box-shadow: 0 24px 70px rgba(27, 57, 66, .14); padding: 38px; }
.login-mark { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 24px; border-radius: 12px; background: var(--text-color); color: #fff; font-weight: 800; letter-spacing: .5px; }
.login-eyebrow { color: var(--accent-blue); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: 1.4px; }
.login-panel h1 { margin-top: 8px; font-size: 30px; letter-spacing: -.8px; }
.login-copy { margin-top: 9px; color: var(--muted-color); font-size: 14px; line-height: 1.5; }
.login-form { display: grid; gap: 8px; margin-top: 26px; }
.login-form label { margin-top: 8px; color: var(--text-color); font-size: 12px; font-weight: 800; }
.login-form input { width: 100%; padding: 12px 13px; border: 1px solid var(--border-color); border-radius: 9px; background: var(--surface-soft); color: var(--text-color); outline: none; }
.login-form input:focus { border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(17, 124, 138, .12); }
.login-submit { display: flex; justify-content: space-between; align-items: center; margin-top: 15px; padding: 12px 14px; border: 0; border-radius: 9px; background: var(--accent-blue); color: #fff; cursor: pointer; font-weight: 800; }
.login-submit:hover { background: #0d6570; box-shadow: 0 7px 16px rgba(17, 124, 138, .2); }
.login-divider { display: flex; align-items: center; gap: 10px; margin: 4px 0; color: var(--muted-color); font-size: 11px; }
.login-divider::before, .login-divider::after { content: ""; height: 1px; flex: 1; background: var(--border-color); }
.google-login { display: flex; justify-content: space-between; align-items: center; padding: 11px 14px; border: 1px solid var(--border-color); border-radius: 9px; background: #fff; color: var(--text-color); cursor: pointer; font-weight: 800; }
.google-login:hover { border-color: var(--accent-blue); background: var(--surface-soft); }
.login-error { min-height: 18px; color: var(--danger-red); font-size: 12px; }
.login-note { color: var(--muted-color); font-size: 11px; }
.logout-btn { color: var(--danger-red); border-color: #f0c7ca; }

.header { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; max-width: 1540px; margin: 0 auto 28px; padding-bottom: 22px; border-bottom: 1px solid var(--border-color); }
.header h1 { max-width: 560px; font-size: clamp(26px, 3vw, 40px); line-height: 1.05; letter-spacing: -1.2px; color: var(--text-color); }
.nav-tabs { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.refresh-box { display: flex; align-items: center; gap: 9px; font-size: 12px; color: var(--muted-color); background: var(--card-bg); padding: 7px 10px; border-radius: 10px; border: 1px solid var(--border-color); box-shadow: 0 4px 12px rgba(27, 57, 66, .04); }
.refresh-box select, input[type="date"], select { background: var(--surface-soft); border: 1px solid var(--border-color); color: var(--text-color); padding: 8px 10px; border-radius: 8px; font-size: 12px; outline: none; }
.refresh-box select:focus, input[type="date"]:focus, select:focus, input:focus { border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(17, 124, 138, .12); }
.btn-refresh-now, .btn-submit, .btn-add { background: var(--accent-blue); color: #fff; border: none; font-weight: 700; cursor: pointer; }
.btn-refresh-now { padding: 9px 13px; border-radius: 8px; font-size: 12px; }
.btn-refresh-now:hover, .btn-submit:hover, .btn-add:hover { background: #0d6570; box-shadow: 0 6px 14px rgba(17, 124, 138, .2); }
.tab-btn { background: transparent; border: 1px solid var(--border-color); color: var(--muted-color); padding: 9px 14px; border-radius: 8px; cursor: pointer; font-weight: 700; }
.tab-btn.active { background: var(--text-color); border-color: var(--text-color); color: #fff; }

.global-bar, .admin-box, .widget-card { background: rgba(255, 255, 255, .94); border: 1px solid var(--border-color); box-shadow: var(--shadow); }
.global-bar { max-width: 1540px; margin: 0 auto 24px; border-radius: 14px; padding: 18px 20px; display: flex; flex-direction: column; gap: 14px; }
.global-title { font-size: 12px; font-weight: 800; color: var(--accent-blue); text-transform: uppercase; letter-spacing: 1.2px; }
.controls { display: flex; gap: 8px; align-items: center; font-size: 12px; flex-wrap: wrap; }
.btn-submit { padding: 9px 14px; font-size: 12px; border-radius: 8px; }
.btn-preset { background: var(--surface-soft); border: 1px solid var(--border-color); color: var(--text-color); padding: 7px 10px; font-size: 11px; border-radius: 7px; cursor: pointer; font-weight: 700; }
.btn-preset:hover, .btn-month:hover { background: var(--accent-blue-soft) !important; color: var(--accent-blue) !important; border-color: #acd9da; }
.month-bar { display: flex; gap: 5px; flex-wrap: wrap; align-items: center; }
.btn-month { background: transparent; border: 1px solid var(--border-color); color: var(--muted-color); padding: 5px 9px; font-size: 11px; border-radius: 6px; cursor: pointer; font-weight: 700; }

.log-container { display: none; max-width: 1540px; background: #142b34; border: 1px solid #24505b; border-radius: 12px; padding: 16px; margin: 0 auto 24px; font-family: ui-monospace, SFMono-Regular, monospace; font-size: 12px; color: #8fe0c2; max-height: 250px; overflow-y: auto; }
.log-container.active { display: block; }
.log-entry { margin-bottom: 4px; border-bottom: 1px solid #244650; padding-bottom: 5px; }
.log-time { color: #8da9b0; }
.log-err { color: #ff9a9e; }
.log-info { color: #8dd8e0; }
.log-success { color: #8fe0c2; }

.section { max-width: 1540px; margin: 0 auto; display: none; }
.section.active { display: block; }
.dashboard-grid { display: grid; gap: 22px; }
.dashboard-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.dashboard-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.widget-card { border-radius: 14px; overflow: hidden; display: flex; flex-direction: column; padding: 20px; min-width: 0; transition: transform .2s ease, box-shadow .2s ease; }
.widget-card:hover { box-shadow: 0 18px 44px rgba(27, 57, 66, .13); }
.widget-card.sortable-ghost { opacity: .5; border: 2px dashed var(--accent-blue); }
.widget-card.sortable-drag { transform: scale(1.015); box-shadow: 0 20px 44px rgba(27, 57, 66, .2); }
.widget-header { padding-bottom: 14px; margin-bottom: 16px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.widget-header h3 { font-size: 18px; font-weight: 800; color: var(--text-color); cursor: grab; }
.widget-header h3:active { cursor: grabbing; }
.widget-header small { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 16px; }
.kpi-card { background: var(--surface-soft); padding: 10px; border-radius: 8px; border: 1px solid var(--border-color); }
.kpi-title { font-size: 9px; color: var(--muted-color); text-transform: uppercase; font-weight: 800; letter-spacing: .4px; }
.kpi-value { font-size: 14px; font-weight: 800; color: var(--text-color); margin-top: 5px; }
.chart-box { background: #fbfdfd; border-radius: 9px; border: 1px solid var(--border-color); padding: 12px; height: 360px; position: relative; }
.iframe-box { width: 100%; height: 480px; border: none; }

.admin-box { border-radius: 14px; padding: clamp(20px, 4vw, 34px); max-width: 980px; margin: 0 auto; }
.admin-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 22px; }
.admin-box h2 { font-size: 28px; letter-spacing: -.7px; }
.section-kicker { color: var(--accent-blue); font-size: 11px; font-weight: 800; letter-spacing: 1.4px; text-transform: uppercase; }
.admin-status { padding: 6px 9px; border: 1px solid #b9dfe0; border-radius: 999px; color: var(--accent-green); background: #effaf5; font-size: 11px; font-weight: 800; }
.admin-menu { display: flex; gap: 5px; padding: 5px; margin-bottom: 26px; background: var(--surface-soft); border: 1px solid var(--border-color); border-radius: 10px; }
.admin-menu-btn { flex: 1; padding: 9px 12px; border: 0; border-radius: 7px; background: transparent; color: var(--muted-color); cursor: pointer; font-size: 12px; font-weight: 800; }
.admin-menu-btn.active { background: var(--card-bg); color: var(--text-color); box-shadow: 0 3px 10px rgba(27, 57, 66, .08); }
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.panel-title { font-size: 19px; margin-bottom: 5px; }
.admin-subsection { margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--border-color); }
.admin-subsection h3 { margin-bottom: 12px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 12px; color: var(--muted-color); margin-bottom: 7px; font-weight: 800; }
.form-group input, .form-group select { width: 100%; padding: 11px; background: var(--surface-soft); border: 1px solid var(--border-color); color: var(--text-color); border-radius: 8px; }
.btn-add { padding: 11px; border-radius: 8px; width: 100%; }
.link-item { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 13px; background: var(--surface-soft); border: 1px solid var(--border-color); border-radius: 8px; margin-top: 8px; }
.btn-delete { background: #fff0f0; color: var(--danger-red); border: 1px solid #f0c7ca; padding: 7px 12px; border-radius: 7px; cursor: pointer; font-weight: 800; }
.btn-delete:hover { background: var(--danger-red); color: #fff; }
.user-management { margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--border-color); }
.user-management h3 { margin-bottom: 6px; }
.admin-hint { margin-bottom: 14px; color: var(--muted-color); font-size: 12px; line-height: 1.5; }
.user-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 8px; align-items: center; }
.user-form input { min-width: 0; padding: 10px; background: var(--surface-soft); border: 1px solid var(--border-color); color: var(--text-color); border-radius: 8px; }
.user-form .btn-add { width: auto; white-space: nowrap; }
.user-item { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 8px; padding: 10px 12px; background: var(--surface-soft); border: 1px solid var(--border-color); border-radius: 8px; }
.firebase-settings { margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--border-color); }
.firebase-settings h3 { margin-bottom: 6px; }
.firebase-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.firebase-grid input { min-width: 0; padding: 10px; background: var(--surface-soft); border: 1px solid var(--border-color); color: var(--text-color); border-radius: 8px; }
.firebase-toggle { display: flex; align-items: center; gap: 9px; margin-top: 13px; color: var(--text-color); font-size: 12px; font-weight: 800; cursor: pointer; }
.firebase-toggle input { width: 16px; height: 16px; accent-color: var(--accent-blue); }
.firebase-save { margin-top: 10px; }
.firebase-status { min-height: 18px; margin-top: 8px; font-size: 12px; }
.firebase-status.success { color: var(--accent-green); }
.firebase-status.error { color: var(--danger-red); }
.dropzone { border: 2px dashed #b9ced1; padding: 28px 20px; text-align: center; border-radius: 9px; background: var(--surface-soft); cursor: pointer; margin-bottom: 12px; transition: all .2s; color: var(--muted-color); }
.dropzone:hover { border-color: var(--accent-blue); background: var(--accent-blue-soft); color: var(--accent-blue); }
.upload-inline-btn { background: var(--accent-blue-soft); color: var(--accent-blue); border: 1px solid #b9dfe0; padding: 7px 10px; border-radius: 7px; font-size: 11px; cursor: pointer; font-weight: 800; display: inline-flex; align-items: center; gap: 4px; }
.upload-inline-btn:hover { background: var(--accent-blue); color: #fff; }

@media (max-width: 1200px) { .dashboard-grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 800px) { .dashboard-grid.cols-2, .dashboard-grid.cols-3 { grid-template-columns: 1fr; } }
@media (max-width: 700px) {
    body { padding: 20px 12px 36px; }
    .header { align-items: flex-start; flex-direction: column; gap: 18px; }
    .nav-tabs { width: 100%; justify-content: flex-start; }
    .refresh-box { flex-wrap: wrap; }
    .global-bar { padding: 16px; }
    .global-bar > div:first-child { flex-direction: column; align-items: flex-start !important; gap: 10px; }
    .admin-menu { overflow-x: auto; }
    .admin-menu-btn { min-width: 110px; }
    .widget-header { align-items: flex-start; flex-direction: column; }
    .widget-header > div { width: 100%; flex-wrap: wrap; }
    .kpi-row { grid-template-columns: repeat(2, 1fr); }
    .chart-box { height: 300px; }
    .login-panel { padding: 28px 22px; }
    .user-form { grid-template-columns: 1fr; }
    .user-form .btn-add { width: 100%; }
    .firebase-grid { grid-template-columns: 1fr; }
}