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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    background: #F3F6FA;
    color: #20334A;
}

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

/* SIDEBAR */

.sidebar {
    width: 255px;
    background: #10243A;
    color: white;
    padding: 25px 17px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 5px 10px 35px;
}

.brand-icon {
    width: 43px;
    height: 43px;
    background: #1E4056;
    color: #47D7C2;
    display: grid;
    place-items: center;
    border-radius: 12px;
    font-size: 27px;
}

.brand h2 {
    font-size: 17px;
    letter-spacing: 1px;
}

.brand small {
    font-size: 11px;
    color: #47D7C2;
    letter-spacing: 2px;
}

.menu-heading {
    color: #8297AA;
    font-size: 10px;
    font-weight: bold;
    letter-spacing: 2px;
    padding: 10px;
    margin-bottom: 10px;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 13px;
    color: #C3D0DD;
    text-decoration: none;
    padding: 13px;
    border-radius: 9px;
    font-size: 13px;
}

.menu-item:hover,
.menu-item.active {
    background: #1D4058;
    color: #47D7C2;
}

.sidebar-footer {
    margin-top: auto;
    padding: 25px 10px 5px;
    color: #A9BACB;
    font-size: 11px;
    line-height: 2;
}

/* MAIN */

.main-content {
    flex: 1;
    min-width: 0;
}

.topbar {
    height: 75px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 35px;
    border-bottom: 1px solid #E8EDF2;
}

.breadcrumb {
    font-size: 13px;
    color: #8795A5;
}

.breadcrumb strong {
    color: #20334A;
}

.profile {
    display: flex;
    align-items: center;
    gap: 10px;
}

.profile-avatar {
    width: 39px;
    height: 39px;
    background: #DFF7F2;
    color: #168E7D;
    display: grid;
    place-items: center;
    border-radius: 50%;
    font-weight: bold;
}

.profile strong,
.profile small {
    display: block;
}

.profile strong {
    font-size: 12px;
}

.profile small {
    color: #8795A5;
    font-size: 10px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 23px;
    cursor: pointer;
}

/* CONTENT */

.page-content {
    max-width: 1500px;
    margin: auto;
    padding: 35px;
}

/* HERO */

.hero {
    background: linear-gradient(120deg, #10243A, #1E536A);
    border-radius: 17px;
    padding: 45px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
    color: white;
}

.hero-content {
    max-width: 600px;
}

.hero-label {
    color: #47D7C2;
    font-size: 10px;
    letter-spacing: 2px;
    font-weight: bold;
}

.hero h1 {
    font-size: clamp(27px, 3vw, 38px);
    line-height: 1.3;
    margin: 17px 0;
}

.hero h1 span {
    color: #47D7C2;
}

.hero p {
    color: #D1DCE6;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 25px;
}

.hero-visual {
    width: 245px;
    min-height: 180px;
    background: rgba(255,255,255,0.09);
    border: 1px solid rgba(255,255,255,0.17);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.physics-symbol {
    font-size: 80px;
    color: #47D7C2;
}

.hero-visual h3 {
    letter-spacing: 3px;
}

.hero-visual p {
    margin: 5px;
    font-size: 10px;
}

/* BUTTON */

.primary-button {
    display: inline-block;
    background: #47D7C2;
    color: #10243A;
    border: none;
    border-radius: 8px;
    padding: 12px 20px;
    font-weight: bold;
    font-size: 13px;
    text-decoration: none;
    cursor: pointer;
}

.primary-button:hover {
    background: #2DC0AA;
}

/* SECTION */

.content-section {
    margin-top: 40px;
    scroll-margin-top: 25px;
}

.section-heading {
    margin-bottom: 20px;
}

.section-heading h2 {
    font-size: 21px;
}

.section-heading p {
    color: #8795A5;
    font-size: 12px;
    margin-top: 6px;
}

/* STATS */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 17px;
}

.stat-card {
    background: white;
    border: 1px solid #E9EEF3;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: #E6F6F4;
    font-size: 23px;
}

.stat-card small {
    color: #8493A4;
}

.stat-card h3 {
    font-size: 15px;
    margin-top: 5px;
}

/* MATERIAL */

.material-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 17px;
}

.material-card {
    background: white;
    border: 1px solid #E9EEF3;
    border-radius: 13px;
    padding: 23px 19px;
    transition: 0.3s;
}

.material-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(20,40,60,0.08);
}

.material-icon {
    width: 48px;
    height: 48px;
    background: #E6F6F4;
    display: grid;
    place-items: center;
    border-radius: 12px;
    font-size: 24px;
    margin-bottom: 17px;
}

.material-card h3 {
    font-size: 15px;
    margin-bottom: 10px;
}

.material-card p {
    color: #8291A1;
    font-size: 12px;
    line-height: 1.8;
}

/* LABORATORY */

.lab-card {
    background: #E2F4F2;
    border: 1px solid #CCE9E5;
    border-radius: 14px;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.lab-card span {
    font-size: 10px;
    color: #168E7D;
    letter-spacing: 2px;
    font-weight: bold;
}

.lab-card h2 {
    font-size: 21px;
    margin: 12px 0;
}

.lab-card p {
    color: #687F8B;
    font-size: 13px;
    margin-bottom: 18px;
}

.lab-icon {
    font-size: 80px;
}

/* PLACEHOLDER */

.content-placeholder {
    background: white;
    border: 1px solid #E9EEF3;
    border-radius: 13px;
    padding: 30px;
}

.content-placeholder h2 {
    font-size: 19px;
    margin-bottom: 10px;
}

.content-placeholder p {
    color: #8795A5;
    font-size: 13px;
}

/* FOOTER */

footer {
    text-align: center;
    padding: 40px 10px 10px;
    color: #8190A0;
    font-size: 12px;
    line-height: 2;
}

/* RESPONSIVE */

@media (max-width: 1100px) {
    .material-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 850px) {

    .sidebar {
        position: fixed;
        left: -270px;
        top: 0;
        bottom: 0;
        z-index: 100;
        transition: 0.3s;
        overflow-y: auto;
    }

    .sidebar.open {
        left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .topbar {
        padding: 0 18px;
        gap: 10px;
    }

    .page-content {
        padding: 22px;
    }
}

@media (max-width: 600px) {

    .hero {
        padding: 27px 22px;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-visual {
        width: 100%;
    }

    .stats-grid,
    .material-grid {
        grid-template-columns: 1fr;
    }

    .lab-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .lab-icon {
        align-self: center;
    }

    .page-content {
        padding: 15px;
    }

    .profile strong {
        font-size: 10px;
    }

    .profile small {
        font-size: 9px;
    }
}

/* =========================================
   PENYEMPURNAAN VIRTUAL LAB: ELASTISITAS
========================================= */

/* Mencegah halaman melebar karena elemen */
html,
body {
    width: 100%;
    min-height: 100%;
}

/* Transisi halus pada tombol */
button,
a {
    transition: all 0.2s ease;
}

/* Mencegah konten dashboard keluar layar */
.app-container {
    width: 100%;
    overflow-x: hidden;
}

/* Gambar dan canvas responsif */
img,
canvas {
    max-width: 100%;
}

/* Tabel dapat digulir pada layar kecil */
.table-wrapper {
    max-width: 100%;
}

/* Penyesuaian layar laptop */
@media (min-width: 1200px) {
    .page-content {
        max-width: 1700px;
    }
}

/* Penyesuaian layar HP */
@media (max-width: 600px) {
    .topbar {
        height: 65px;
    }

    .breadcrumb {
        font-size: 11px;
    }

    .simulation-page {
        padding: 15px;
    }
}

/* =========================================
   PENYESUAIAN KARTU NAVIGASI DASHBOARD
========================================= */

/* Kartu fitur yang berupa tautan */
a.material-card {
    display: block;
    color: #20334A;
    text-decoration: none;
    cursor: pointer;
}

/* Warna teks tetap konsisten */
a.material-card h3 {
    color: #20334A;
}

a.material-card p {
    color: #8291A1;
}

/* Efek ketika kartu diarahkan kursor */
a.material-card:hover {
    color: #20334A;
    border-color: #47D7C2;
}

/* =========================================
   PENYESUAIAN HALAMAN TERPISAH
========================================= */

.page-content {
    width: 100%;
    min-width: 0;
}

/* Area konten halaman selain dashboard */
.page-header {
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 26px;
    color: #20334A;
    margin-bottom: 8px;
}

.page-header p {
    color: #8795A5;
    font-size: 13px;
    line-height: 1.7;
}

/* Panel konten */
.page-panel {
    background: white;
    border: 1px solid #E9EEF3;
    border-radius: 13px;
    padding: 25px;
    margin-bottom: 22px;
}

@media (max-width: 600px) {
    .page-panel {
        padding: 17px;
    }

    .page-header h1 {
        font-size: 22px;
    }
}

/* =================================================
   GRAFIK VIRTUAL LAB ELASTISITAS
================================================= */

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
    max-width: 350px;
    margin-top: 20px;
}

.filter-group label {
    font-size: 13px;
    font-weight: 600;
    color: #435c75;
}

.filter-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #dce5ed;
    border-radius: 8px;
    background: #ffffff;
    color: #20334a;
    outline: none;
}

.chart-description {
    margin-top: 20px;
    color: #718096;
    font-size: 12px;
    line-height: 1.8;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 390px;
    margin-top: 25px;
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.analysis-item {
    padding: 20px;
    background: #f5f8fb;
    border-radius: 10px;
    min-width: 0;
}

.analysis-item span {
    display: block;
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 10px;
}

.analysis-item h3 {
    color: #20334a;
    font-size: 17px;
    overflow-wrap: anywhere;
}

.analysis-note {
    margin-top: 20px;
    padding: 15px;
    background: #eef8f7;
    border-radius: 8px;
    color: #347e75;
    font-size: 13px;
    line-height: 1.7;
}

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 30px;
}

.primary-button,
.secondary-button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.primary-button {
    background: #16b8a6;
    color: white;
}

.secondary-button {
    background: #e8eef4;
    color: #20334a;
}

.empty-data {
    text-align: center;
    padding: 30px 15px;
    color: #8291a1;
    font-size: 13px;
}

@media (max-width: 700px) {

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

    .chart-wrapper {
        height: 300px;
    }

    .action-buttons button {
        width: 100%;
    }

}

/* =================================================
   REDESAIN HALAMAN GRAFIK
================================================= */

.page-header {
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 27px;
    font-weight: 700;
    color: #20334a;
    margin-bottom: 9px;
}

.page-header p {
    font-size: 13px;
    color: #8291a1;
    line-height: 1.7;
}

/* Ringkasan data */

.page-content .stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.page-content .stat-card {
    background: #ffffff;
    border: 1px solid #e5ebf1;
    border-radius: 13px;
    padding: 22px;
    min-width: 0;
}

.page-content .stat-card p {
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 12px;
}

.page-content .stat-card h2 {
    color: #20334a;
    font-size: 25px;
    font-weight: 700;
    margin-bottom: 7px;
}

.page-content .stat-card span {
    color: #9aa8b6;
    font-size: 11px;
}

/* Panel */

.page-content .page-panel {
    background: #ffffff;
    border: 1px solid #e5ebf1;
    border-radius: 14px;
    padding: 25px;
    margin-bottom: 22px;
}

.panel-heading {
    margin-bottom: 20px;
}

.panel-heading h2 {
    color: #20334a;
    font-size: 18px;
    margin-bottom: 8px;
}

.panel-heading p {
    color: #8795a5;
    font-size: 12px;
    line-height: 1.6;
}

/* Filter */

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
    max-width: 320px;
    margin-top: 15px;
}

.filter-group label {
    color: #435c75;
    font-size: 13px;
    font-weight: 600;
}

.filter-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #dce5ed;
    border-radius: 8px;
    background: #ffffff;
    color: #20334a;
    font-size: 13px;
    outline: none;
}

.filter-group select:focus {
    border-color: #16b8a6;
}

.chart-description {
    margin-top: 17px;
    padding: 12px 15px;
    background: #f5f8fb;
    border-radius: 8px;
    color: #718096;
    font-size: 12px;
    line-height: 1.8;
}

/* Grafik */

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 420px;
    margin: 25px 0 10px;
}

#elasticityChart {
    max-width: 100%;
}

.empty-data {
    padding: 35px 15px;
    text-align: center;
    color: #8291a1;
    font-size: 13px;
}

/* Analisis */

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.analysis-item {
    padding: 20px;
    background: #f5f8fb;
    border: 1px solid #e9eef3;
    border-radius: 10px;
    min-width: 0;
}

.analysis-item span {
    display: block;
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 12px;
}

.analysis-item h3 {
    color: #20334a;
    font-size: 17px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.analysis-note {
    margin-top: 18px;
    padding: 15px;
    background: #eef8f7;
    border-radius: 9px;
    color: #347e75;
    font-size: 12px;
    line-height: 1.7;
}

/* Tombol */

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 25px 0;
}

.primary-button,
.secondary-button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.primary-button {
    background: #16b8a6;
    color: white;
}

.primary-button:hover {
    background: #109c8e;
}

.secondary-button {
    background: #e8eef4;
    color: #20334a;
}

.secondary-button:hover {
    background: #dce5ed;
}

/* Tampilan tablet dan HP */

@media (max-width: 850px) {

    .page-content .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

}

@media (max-width: 550px) {

    .page-content .stats-grid {
        grid-template-columns: 1fr;
    }

    .page-content .page-panel {
        padding: 17px;
    }

    .chart-wrapper {
        height: 320px;
    }

    .page-header h1 {
        font-size: 22px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons button {
        width: 100%;
    }

}

/* =================================================
   REDESAIN HALAMAN GRAFIK
================================================= */

.page-header {
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 27px;
    font-weight: 700;
    color: #20334a;
    margin-bottom: 9px;
}

.page-header p {
    font-size: 13px;
    color: #8291a1;
    line-height: 1.7;
}

/* Ringkasan data */

.page-content .stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.page-content .stat-card {
    background: #ffffff;
    border: 1px solid #e5ebf1;
    border-radius: 13px;
    padding: 22px;
    min-width: 0;
}

.page-content .stat-card p {
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 12px;
}

.page-content .stat-card h2 {
    color: #20334a;
    font-size: 25px;
    font-weight: 700;
    margin-bottom: 7px;
}

.page-content .stat-card span {
    color: #9aa8b6;
    font-size: 11px;
}

/* Panel */

.page-content .page-panel {
    background: #ffffff;
    border: 1px solid #e5ebf1;
    border-radius: 14px;
    padding: 25px;
    margin-bottom: 22px;
}

.panel-heading {
    margin-bottom: 20px;
}

.panel-heading h2 {
    color: #20334a;
    font-size: 18px;
    margin-bottom: 8px;
}

.panel-heading p {
    color: #8795a5;
    font-size: 12px;
    line-height: 1.6;
}

/* Filter */

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
    max-width: 320px;
    margin-top: 15px;
}

.filter-group label {
    color: #435c75;
    font-size: 13px;
    font-weight: 600;
}

.filter-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #dce5ed;
    border-radius: 8px;
    background: #ffffff;
    color: #20334a;
    font-size: 13px;
    outline: none;
}

.filter-group select:focus {
    border-color: #16b8a6;
}

.chart-description {
    margin-top: 17px;
    padding: 12px 15px;
    background: #f5f8fb;
    border-radius: 8px;
    color: #718096;
    font-size: 12px;
    line-height: 1.8;
}

/* Grafik */

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 420px;
    margin: 25px 0 10px;
}

#elasticityChart {
    max-width: 100%;
}

.empty-data {
    padding: 35px 15px;
    text-align: center;
    color: #8291a1;
    font-size: 13px;
}

/* Analisis */

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.analysis-item {
    padding: 20px;
    background: #f5f8fb;
    border: 1px solid #e9eef3;
    border-radius: 10px;
    min-width: 0;
}

.analysis-item span {
    display: block;
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 12px;
}

.analysis-item h3 {
    color: #20334a;
    font-size: 17px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.analysis-note {
    margin-top: 18px;
    padding: 15px;
    background: #eef8f7;
    border-radius: 9px;
    color: #347e75;
    font-size: 12px;
    line-height: 1.7;
}

/* Tombol */

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 25px 0;
}

.primary-button,
.secondary-button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.primary-button {
    background: #16b8a6;
    color: white;
}

.primary-button:hover {
    background: #109c8e;
}

.secondary-button {
    background: #e8eef4;
    color: #20334a;
}

.secondary-button:hover {
    background: #dce5ed;
}

/* Tampilan tablet dan HP */

@media (max-width: 850px) {

    .page-content .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

}

@media (max-width: 550px) {

    .page-content .stats-grid {
        grid-template-columns: 1fr;
    }

    .page-content .page-panel {
        padding: 17px;
    }

    .chart-wrapper {
        height: 320px;
    }

    .page-header h1 {
        font-size: 22px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons button {
        width: 100%;
    }

}

/* =================================================
   REDESAIN HALAMAN GRAFIK
================================================= */

.page-header {
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 27px;
    font-weight: 700;
    color: #20334a;
    margin-bottom: 9px;
}

.page-header p {
    font-size: 13px;
    color: #8291a1;
    line-height: 1.7;
}

/* Ringkasan data */

.page-content .stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.page-content .stat-card {
    background: #ffffff;
    border: 1px solid #e5ebf1;
    border-radius: 13px;
    padding: 22px;
    min-width: 0;
}

.page-content .stat-card p {
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 12px;
}

.page-content .stat-card h2 {
    color: #20334a;
    font-size: 25px;
    font-weight: 700;
    margin-bottom: 7px;
}

.page-content .stat-card span {
    color: #9aa8b6;
    font-size: 11px;
}

/* Panel */

.page-content .page-panel {
    background: #ffffff;
    border: 1px solid #e5ebf1;
    border-radius: 14px;
    padding: 25px;
    margin-bottom: 22px;
}

.panel-heading {
    margin-bottom: 20px;
}

.panel-heading h2 {
    color: #20334a;
    font-size: 18px;
    margin-bottom: 8px;
}

.panel-heading p {
    color: #8795a5;
    font-size: 12px;
    line-height: 1.6;
}

/* Filter */

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
    max-width: 320px;
    margin-top: 15px;
}

.filter-group label {
    color: #435c75;
    font-size: 13px;
    font-weight: 600;
}

.filter-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #dce5ed;
    border-radius: 8px;
    background: #ffffff;
    color: #20334a;
    font-size: 13px;
    outline: none;
}

.filter-group select:focus {
    border-color: #16b8a6;
}

.chart-description {
    margin-top: 17px;
    padding: 12px 15px;
    background: #f5f8fb;
    border-radius: 8px;
    color: #718096;
    font-size: 12px;
    line-height: 1.8;
}

/* Grafik */

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 420px;
    margin: 25px 0 10px;
}

#elasticityChart {
    max-width: 100%;
}

.empty-data {
    padding: 35px 15px;
    text-align: center;
    color: #8291a1;
    font-size: 13px;
}

/* Analisis */

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.analysis-item {
    padding: 20px;
    background: #f5f8fb;
    border: 1px solid #e9eef3;
    border-radius: 10px;
    min-width: 0;
}

.analysis-item span {
    display: block;
    color: #8291a1;
    font-size: 12px;
    margin-bottom: 12px;
}

.analysis-item h3 {
    color: #20334a;
    font-size: 17px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.analysis-note {
    margin-top: 18px;
    padding: 15px;
    background: #eef8f7;
    border-radius: 9px;
    color: #347e75;
    font-size: 12px;
    line-height: 1.7;
}

/* Tombol */

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 25px 0;
}

.primary-button,
.secondary-button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.primary-button {
    background: #16b8a6;
    color: white;
}

.primary-button:hover {
    background: #109c8e;
}

.secondary-button {
    background: #e8eef4;
    color: #20334a;
}

.secondary-button:hover {
    background: #dce5ed;
}

/* Tampilan tablet dan HP */

@media (max-width: 850px) {

    .page-content .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

}

@media (max-width: 550px) {

    .page-content .stats-grid {
        grid-template-columns: 1fr;
    }

    .page-content .page-panel {
        padding: 17px;
    }

    .chart-wrapper {
        height: 320px;
    }

    .page-header h1 {
        font-size: 22px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons button {
        width: 100%;
    }

}



/* =========================================
   LOGIN, KELUAR, MATERI, EVALUASI
========================================= */

.logout-button {
    margin-left: 6px;
    padding: 7px 12px;
    border: 1px solid #E2E8EF;
    background: #fff;
    color: #C0392B;
    border-radius: 8px;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
}

.logout-button:hover {
    background: #FEECEC;
}

.floating-user {
    position: fixed;
    top: 12px;
    right: 14px;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    border: 1px solid #E2E8EF;
    border-radius: 999px;
    padding: 5px 6px 5px 14px;
    font-size: 12px;
    color: #20334A;
    box-shadow: 0 4px 14px rgba(16, 36, 58, .1);
}

.floating-user button {
    border: none;
    background: #FEECEC;
    color: #C0392B;
    border-radius: 999px;
    padding: 6px 12px;
    font-weight: bold;
    cursor: pointer;
}

/* ---------- Materi ---------- */

.topic-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.topic-tab {
    padding: 10px 16px;
    border: 1px solid #E2E8EF;
    background: #fff;
    border-radius: 999px;
    font-size: 13px;
    font-weight: bold;
    color: #51647A;
    cursor: pointer;
}

.topic-tab.active {
    background: #10243A;
    color: #fff;
    border-color: #10243A;
}

.topic-section {
    display: none;
}

.topic-section.active {
    display: block;
}

.topic-section h2 {
    font-size: 20px;
    margin-bottom: 12px;
}

.topic-section h3 {
    font-size: 15px;
    margin: 20px 0 8px;
    color: #10243A;
}

.topic-section p,
.topic-section li {
    font-size: 14px;
    line-height: 1.8;
    color: #3A4D63;
}

.topic-section ul,
.topic-section ol {
    padding-left: 22px;
}

.formula-box {
    background: #EEF5FB;
    border-left: 4px solid #168E7D;
    border-radius: 8px;
    padding: 14px 18px;
    margin: 14px 0;
    font-size: 17px;
    line-height: 1.9;
    color: #10243A;
    font-family: "Times New Roman", serif;
}

.formula-box small {
    display: block;
    font-family: Arial, sans-serif;
    font-size: 12px;
    color: #6B7C90;
    line-height: 1.7;
    margin-top: 4px;
}

.example-box {
    background: #FFF8E6;
    border: 1px solid #F3E2AE;
    border-radius: 10px;
    padding: 16px 18px;
    margin: 16px 0;
}

.example-box strong {
    color: #8A6100;
}

.mat-table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    font-size: 13px;
}

.mat-table th,
.mat-table td {
    padding: 10px 12px;
    border-bottom: 1px solid #E9EEF3;
    text-align: left;
}

.mat-table th {
    background: #F1F6FA;
}

.topic-figure {
    background: #F8FAFC;
    border: 1px solid #E9EEF3;
    border-radius: 10px;
    padding: 12px;
    margin: 14px 0;
    text-align: center;
}

.topic-figure svg {
    max-width: 100%;
    height: auto;
}

.topic-figure figcaption {
    font-size: 12px;
    color: #6B7C90;
    margin-top: 6px;
}

.topic-nav {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 26px;
}

.topic-nav button {
    padding: 11px 18px;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    background: #10243A;
    color: #fff;
}

.topic-nav button.ghost {
    background: #EEF2F6;
    color: #20334A;
}

.topic-nav button:disabled {
    opacity: .35;
    cursor: default;
}

/* ---------- Evaluasi ---------- */

.quiz-progress {
    height: 8px;
    background: #E9EEF3;
    border-radius: 99px;
    overflow: hidden;
    margin: 10px 0 20px;
}

.quiz-progress div {
    height: 100%;
    width: 0;
    background: #168E7D;
    transition: width .3s;
}

.quiz-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #8795A5;
}

.quiz-question {
    font-size: 16px;
    line-height: 1.7;
    margin: 6px 0 18px;
    color: #10243A;
}

.quiz-options {
    display: grid;
    gap: 10px;
}

.quiz-option {
    text-align: left;
    padding: 13px 16px;
    background: #fff;
    border: 1.5px solid #DCE4EC;
    border-radius: 10px;
    font-size: 14px;
    color: #20334A;
    cursor: pointer;
    line-height: 1.6;
}

.quiz-option:hover:not(:disabled) {
    border-color: #168E7D;
    background: #F2FAF8;
}

.quiz-option.selected {
    border-color: #10243A;
    background: #EEF5FB;
}

.quiz-option.correct {
    border-color: #168E7D;
    background: #E7F6F2;
}

.quiz-option.wrong {
    border-color: #C0392B;
    background: #FEECEC;
}

.quiz-feedback {
    margin-top: 16px;
    padding: 13px 15px;
    border-radius: 9px;
    font-size: 13px;
    line-height: 1.7;
    background: #F1F6FA;
}

.score-circle {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    border: 9px solid #168E7D;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin: 6px auto 14px;
}

.score-circle strong {
    font-size: 34px;
    color: #10243A;
}

.score-circle small {
    color: #8795A5;
}

.result-center {
    text-align: center;
}

.review-item {
    border-top: 1px solid #E9EEF3;
    padding: 14px 0;
    font-size: 13px;
    line-height: 1.7;
}

.review-item .ok {
    color: #168E7D;
    font-weight: bold;
}

.review-item .no {
    color: #C0392B;
    font-weight: bold;
}

/* ---------- Login ---------- */

.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background:
        radial-gradient(circle at 15% 20%, rgba(22, 142, 125, .25), transparent 45%),
        linear-gradient(135deg, #10243A, #1B3D5F);
}

.login-card {
    width: 100%;
    max-width: 880px;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    background: #fff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, .35);
}

.login-visual {
    background: linear-gradient(160deg, #10243A, #168E7D);
    color: #fff;
    padding: 42px 34px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-visual .login-logo {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: rgba(255, 255, 255, .15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.login-visual h1 {
    font-size: 26px;
    line-height: 1.3;
    margin-bottom: 12px;
}

.login-visual p {
    font-size: 13px;
    line-height: 1.8;
    opacity: .9;
}

.login-visual ul {
    list-style: none;
    margin-top: 20px;
    font-size: 13px;
    line-height: 2;
}

.login-form-wrap {
    padding: 42px 36px;
}

.login-form-wrap h2 {
    font-size: 22px;
    color: #10243A;
    margin-bottom: 6px;
}

.login-form-wrap > p {
    font-size: 13px;
    color: #8795A5;
    margin-bottom: 22px;
}

.login-field {
    margin-bottom: 16px;
}

.login-field label {
    display: block;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 6px;
    color: #3A4D63;
}

.login-field input,
.login-field select {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid #DCE4EC;
    border-radius: 9px;
    font-size: 14px;
    background: #fff;
    color: #20334A;
}

.login-field input:focus,
.login-field select:focus {
    outline: none;
    border-color: #168E7D;
    box-shadow: 0 0 0 3px rgba(22, 142, 125, .15);
}

.login-submit {
    width: 100%;
    padding: 13px;
    border: none;
    border-radius: 9px;
    background: #168E7D;
    color: #fff;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
}

.login-submit:hover {
    background: #11766A;
}

.login-error {
    color: #C0392B;
    font-size: 12px;
    min-height: 18px;
    margin-bottom: 8px;
}

.login-note {
    margin-top: 16px;
    font-size: 11px;
    color: #8795A5;
    line-height: 1.7;
}

@media (max-width: 760px) {
    .login-card {
        grid-template-columns: 1fr;
    }

    .login-visual {
        padding: 28px 24px;
    }

    .login-visual ul {
        display: none;
    }

    .login-form-wrap {
        padding: 28px 22px;
    }
}