:root {
    --color-bg: #f4f6fb;
    --color-white: #ffffff;
    --color-border: #e7eaf1;
    --color-text: #1e2432;
    --color-text-muted: #8a91a3;

    --color-blue: #2f6fed;
    --color-blue-light: #eaf1ff;

    --color-green: #16a34a;
    --color-green-light: #e9f9ef;

    --color-orange: #f97316;
    --color-orange-light: #fff1e6;

    --color-red: #ef4444;
    --color-red-light: #fdecec;

    --color-purple: #8b5cf6;
    --color-purple-light: #f2ecff;

    --color-yellow: #eab308;
    --color-yellow-light: #fef9e7;

    --sidebar-width: 260px;
    --radius: 14px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

/* ---------- SIDEBAR ---------- */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-white);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    padding: 28px 20px;
}

.sidebar-brand h1 {
    font-size: 14px;
    line-height: 1.4;
    font-weight: 800;
    margin: 0 0 6px;
    letter-spacing: 0.2px;
}

.sidebar-brand p {
    margin: 0 0 32px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.sidebar-nav-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    margin-bottom: 4px;
}

.nav-item .nav-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.nav-item.active {
    background: var(--color-blue-light);
    color: var(--color-blue);
    font-weight: 600;
}

.nav-item:hover:not(.active) {
    background: #f3f5fa;
}

.nav-item.logout {
    color: var(--color-red);
    margin-top: 8px;
}

.nav-item.logout:hover {
    background: var(--color-red-light);
}

/* ---------- MAIN ---------- */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 22px 32px;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.topbar-icon {
    width: 20px;
    height: 20px;
    color: var(--color-blue);
}

.topbar h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.content {
    padding: 28px 32px 48px;
}

.section {
    margin-bottom: 28px;
}

.section-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}

/* ---------- CARDS ---------- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.card-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 18px;
    height: 18px;
}

.icon-blue   { background: var(--color-blue-light);   color: var(--color-blue); }
.icon-green  { background: var(--color-green-light);  color: var(--color-green); }
.icon-orange { background: var(--color-orange-light); color: var(--color-orange); }
.icon-red    { background: var(--color-red-light);    color: var(--color-red); }
.icon-purple { background: var(--color-purple-light); color: var(--color-purple); }
.icon-yellow { background: var(--color-yellow-light); color: var(--color-yellow); }

.card-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.card-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
}

.card-sub {
    font-size: 11px;
    font-weight: 600;
}

.cooldown-siap {
    color: var(--color-green);
}

.cooldown-active {
    color: var(--color-orange);
}

.text-green { color: var(--color-green); }
.text-red   { color: var(--color-red); }

/* ---------- ALERT / FLASH STATUS ---------- */
.alert-status {
    background: var(--color-green-light);
    color: var(--color-green);
    border: 1px solid #c9ecd4;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

/* ---------- SETTINGS ---------- */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    align-items: start;
}

.settings-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

.settings-card h3 {
    margin: 0 0 4px;
    font-size: 15px;
    font-weight: 700;
}

.settings-card > p {
    margin: 0 0 18px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-white);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-blue);
}

.form-error {
    font-size: 11px;
    color: var(--color-red);
}

.btn-primary,
.btn-manual {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: 8px;
    padding: 11px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-blue);
    color: #fff;
    align-self: flex-start;
}

.btn-primary:hover {
    background: #2560d6;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 11px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    background: var(--color-white);
    color: var(--color-text);
}

.btn-secondary:hover:not(:disabled) {
    background: #f3f5fa;
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.button-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 14px;
}

/* Form ini cuma pembungkus tombol, tidak boleh punya box sendiri
   supaya tombolnya tetap sejajar dalam .button-row */
.inline-form {
    display: contents;
}

#btn-reset-cooldown {
    width: 100%;
    margin-top: 10px;
    margin-bottom: 12px;
}

.btn-manual {
    background: var(--color-orange-light);
    color: var(--color-orange);
    width: 100%;
    margin-bottom: 12px;
}

.btn-manual:hover {
    background: #ffe4cc;
}

.btn-manual svg {
    width: 16px;
    height: 16px;
}

.btn-manual:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--color-orange-light);
}

.settings-note {
    margin: 0;
    font-size: 11px;
    color: var(--color-text-muted);
}

@media (max-width: 1024px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- KELOLA AKUN (profile) ---------- */
.profile-stack {
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-width: 480px;
}

.settings-card-danger {
    border-color: #f4c7c3;
}

.settings-card-danger h3 {
    color: var(--color-red);
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: 8px;
    padding: 11px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    background: var(--color-red-light);
    color: var(--color-red);
    align-self: flex-start;
}

.btn-danger:hover {
    background: #fbdada;
}

.link-button {
    background: none;
    border: none;
    padding: 0;
    color: var(--color-blue);
    font-size: inherit;
    font-weight: 600;
    text-decoration: underline;
    cursor: pointer;
}

/* ---------- CHART ---------- */
/* ---------- CHART + LOG (berdampingan) ---------- */
.chart-log-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    align-items: stretch;
}

.chart-card,
.log-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.chart-card-header h3 {
    margin: 0 0 4px;
    font-size: 15px;
    font-weight: 700;
}

.chart-card-header p {
    margin: 0 0 18px;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* Wrapper WAJIB punya tinggi tetap. Tanpa ini, Chart.js (responsive + maintainAspectRatio:false)
   akan terus menyesuaikan tinggi ke parent, sementara tinggi parent mengikuti canvas -> loop
   resize tanpa henti yang membuat halaman flicker dan CPU/GPU browser jadi berat. */
.chart-canvas-wrap {
    position: relative;
    width: 100%;
    height: 320px;
}

.chart-canvas-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

.log-list {
    height: 320px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.log-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 4px;
    border-bottom: 1px solid var(--color-border);
}

.log-row:last-child {
    border-bottom: none;
}

.log-row-main {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.log-ppm {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
}

.jenis-otomatis {
    background: var(--color-blue-light);
    color: var(--color-blue);
}

.jenis-manual {
    background: var(--color-purple-light);
    color: var(--color-purple);
}

.log-jenis {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 999px;
}

.hasil-berhasil {
    background: var(--color-green-light);
    color: var(--color-green);
}

.hasil-gagal {
    background: var(--color-red-light);
    color: var(--color-red);
}

.hasil-pending {
    background: var(--color-border);
    color: var(--color-text-muted);
}

.log-hasil {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 999px;
}

.log-time {
    font-size: 12px;
    color: var(--color-text-muted);
}

.log-empty {
    font-size: 13px;
    color: var(--color-text-muted);
    padding: 20px 4px;
    text-align: center;
}

@media (max-width: 1024px) {
    .chart-log-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .chart-canvas-wrap,
    .log-list {
        height: 240px;
    }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .app-shell {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 16px 20px;
    }

    .sidebar-nav {
        display: none;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }
}