:root {
    --topbar-height: 70px;
    --sidebar-width: 250px;
    --page-gutter: 24px;
    --page-top-gap: var(--topbar-height);
    --sl-purple: #7b19bf;
    --sl-purple-dark: #331650;
    --sl-purple-soft: #f5efff;
    --sl-purple-border: #e5d7f7;
    --sl-bg: #fbf9ff;
    --sl-card: #ffffff;
    --sl-text: #24183a;
    --sl-muted: #706382;
    --sl-success: #1f7a43;
    --sl-warning: #9a6400;
    --sl-danger: #b4233c;
    --sl-radius: 14px;
    --sl-radius-sm: 10px;
    --sl-shadow: 0 12px 28px rgba(46, 19, 82, 0.08);
    --sl-shadow-hover: 0 18px 36px rgba(46, 19, 82, 0.14);
}

html, body {
    height: 100%;
}

body {
    font-family: Poppins;
    margin: 0;
    padding: 0;
    background-color: var(--sl-bg);
    color: var(--sl-text);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.page-pad #content,
body.has-sidebar #content {
    padding-top: var(--page-top-gap);
}

#content {
    flex: 1 0 auto;
}

.container {
    width: 100%;
    margin: 0 auto;
}

.container p {
    color: #4b4b4b;
}

header {
    font-family: Poppins;
    /*background: linear-gradient(90deg, rgb(94, 0, 183) 0%, rgb(112, 0, 153) 100%);*/
    background: var(--sl-purple-dark);
    color: #fff;
    padding: 15px 0;
    top: 0;
    position: fixed;
    width: 100%;
    height: var(--topbar-height);
    box-sizing: border-box;
    z-index: 10003;
}

body.has-sidebar header .nav-actions {
    display: none;
}

body.has-sidebar .navbar-right {
    min-height: 40px;
}

header h2 {
    margin: 0 50px;
    color: #fff;
    font-size: 18px;
}

header a {
    text-decoration: none;
}

header nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

header nav ul li {
    display: inline;
    margin-right: 20px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
}

header nav .nav-logo {
    height: 40px;
}

.nav-container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.nav-section {
    width: calc(100% / 3)
}

.navbar-center {
    display: flex;
    flex-direction: row;
    justify-content: center;
}

.navbar-right {
    display: flex;
    flex-direction: row;
    justify-content: right;
}

.nav-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-right: 20px;
}

.nav-action h2 {
    margin: 0;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.18s ease, transform 0.18s ease;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid rgba(149, 13, 211, 0.24);
    outline-offset: 3px;
}

.sl-card {
    background: var(--sl-card);
    border: 1px solid var(--sl-purple-border);
    border-radius: var(--sl-radius);
    box-shadow: var(--sl-shadow);
}

.sl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
    border-radius: var(--sl-radius-sm);
    border: 1px solid transparent;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    box-sizing: border-box;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.sl-btn:hover {
    transform: translateY(-1px);
}

.sl-btn-primary {
    background: linear-gradient(135deg, var(--sl-purple) 0%, var(--sl-purple-dark) 100%);
    color: #fff;
    box-shadow: 0 10px 22px rgba(59, 0, 115, 0.22);
}

.sl-btn-secondary,
.sl-btn-ghost {
    background: #fff;
    color: var(--sl-purple-dark);
    border-color: var(--sl-purple-border);
}

.sl-btn-ghost {
    background: var(--sl-purple-soft);
}

.sl-page {
    width: min(1120px, calc(100% - 40px));
    margin: 38px auto 64px;
}

.sl-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 22px;
}

.sl-page-kicker {
    margin: 0 0 6px;
    color: var(--sl-purple);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 12px;
    font-weight: 800;
}

.sl-page-title {
    margin: 0;
    color: var(--sl-purple-dark);
    font-size: clamp(28px, 3vw, 36px);
    line-height: 1.1;
    letter-spacing: 0;
}

.sl-page-subtitle {
    margin: 8px 0 0;
    color: var(--sl-muted);
    max-width: 680px;
}

.sl-page-actions {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.sl-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    padding: 9px 14px;
    color: var(--sl-purple-dark);
    background: var(--sl-purple-soft);
    border: 1px solid var(--sl-purple-border);
    border-radius: var(--sl-radius-sm);
    text-decoration: none;
    font-weight: 800;
    white-space: nowrap;
}

.sl-back-link::before {
    content: "";
    width: 8px;
    height: 8px;
    border-left: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
}

.sl-two-column {
    display: grid;
    grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
}

.sl-two-column-main {
    display: grid;
    gap: 16px;
    min-width: 0;
}

.sl-two-column-wide {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
}

.sl-side-panel {
    display: grid;
    gap: 14px;
    min-width: 0;
}

.sl-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
}

.sl-card-title {
    margin: 0;
    color: var(--sl-purple-dark);
    font-size: 20px;
    line-height: 1.2;
}

.sl-card-subtitle {
    margin: 6px 0 0;
    color: var(--sl-muted);
}

.sl-icon {
    --sl-icon-color: currentColor;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.15em;
    height: 1.15em;
    color: var(--sl-icon-color);
    position: relative;
    flex: 0 0 auto;
}

.sl-icon-badge {
    --sl-icon-color: var(--sl-purple);
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: var(--sl-purple-soft);
    color: var(--sl-icon-color);
    border: 1px solid var(--sl-purple-border);
}

.sl-icon-plus::before,
.sl-icon-plus::after,
.sl-icon-spark::before,
.sl-icon-spark::after,
.sl-icon-clock::before,
.sl-icon-clock::after,
.sl-icon-check::before,
.sl-icon-arrow::before,
.sl-icon-pencil::before,
.sl-icon-book::before,
.sl-icon-book::after,
.sl-icon-bulb::before,
.sl-icon-bulb::after {
    content: "";
    position: absolute;
    box-sizing: border-box;
}

.sl-icon-plus::before {
    width: 58%;
    border-top: 2px solid currentColor;
}

.sl-icon-plus::after {
    height: 58%;
    border-left: 2px solid currentColor;
}

.sl-icon-spark::before {
    width: 42%;
    height: 78%;
    border-radius: 60% 40% 60% 40%;
    background: currentColor;
    transform: rotate(28deg);
}

.sl-icon-spark::after {
    width: 28%;
    height: 28%;
    border-radius: 999px;
    background: currentColor;
    right: 9%;
    top: 9%;
    opacity: .65;
}

.sl-icon-clock::before {
    inset: 18%;
    border: 2px solid currentColor;
    border-radius: 999px;
}

.sl-icon-clock::after {
    width: 25%;
    height: 32%;
    border-left: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    left: 50%;
    top: 29%;
}

.sl-icon-check::before {
    width: 54%;
    height: 30%;
    border-left: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(-45deg);
    margin-top: -4%;
}

.sl-icon-arrow::before {
    width: 42%;
    height: 42%;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: rotate(45deg);
}

.sl-icon-pencil::before {
    width: 54%;
    height: 12%;
    border-radius: 999px;
    background: currentColor;
    transform: rotate(-38deg);
}

.sl-icon-book::before {
    width: 58%;
    height: 62%;
    border: 2px solid currentColor;
    border-radius: 3px 7px 7px 3px;
}

.sl-icon-book::after {
    height: 48%;
    border-left: 2px solid currentColor;
    left: 50%;
}

.sl-icon-bulb::before {
    width: 48%;
    height: 50%;
    border: 2px solid currentColor;
    border-radius: 999px 999px 70% 70%;
    top: 15%;
}

.sl-icon-bulb::after {
    width: 30%;
    border-top: 2px solid currentColor;
    bottom: 18%;
}

.sl-action-card {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

@media (max-width: 860px) {
    .sl-page {
        width: min(100% - 28px, 1120px);
        margin-top: 28px;
        margin-bottom: 44px;
    }

    .sl-page-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .sl-page-actions,
    .sl-back-link {
        width: 100%;
    }

    .sl-back-link {
        justify-content: center;
    }

    .sl-two-column,
    .sl-two-column-wide {
        grid-template-columns: 1fr;
    }
}

.nav-action:hover h2 {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

.navbar-left {
    display: flex;
    flex-direction: row;
    justify-content: left;
    align-content: center;
}

footer {
    background: #0f0f1a;
    color: #f1f1f6;
    padding: 26px 24px 18px;
}

.site-footer {
    background: #0f0f1a;
    color: #f1f1f6;
    padding: 26px 24px 18px;
    font-family: Poppins, sans-serif;
    font-size: 14px;
}

.site-footer .footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.site-footer .footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.site-footer .footer-copy {
    margin: 0;
    color: #cfd2e3;
    font-size: 13px;
}

.site-footer .footer-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.site-footer .footer-links a {
    color: #f1f1f6;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s ease;
}

.site-footer .footer-links a:hover {
    opacity: 0.8;
}

.site-footer .footer-email {
    color: #cfd2e3;
    font-weight: 600;
    letter-spacing: 0.1px;
}

.site-footer .footer-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 999px;
    border: 1px solid rgba(241, 241, 246, 0.35);
    color: #f1f1f6;
}

.site-footer .footer-social svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
}

.site-footer .footer-meta {
    max-width: 1100px;
    margin: 14px auto 0;
    color: #8a8dab;
    font-size: 12px;
    text-align: left;
}

.homework-form-wrapper {
    margin: 20px
}

.question-container {
    background-color: rgb(232, 232, 232);
    border-style: solid;
    border-width: 2px;
    border-color: rgb(212, 212, 212);
    margin: 30px 100px;
    height: 300px;
}

/* ----------------------------------
   Hamburger Menu (global nav toggle)
---------------------------------- */

.hamburger {
    display: none;
    font-size: 28px;
    line-height: 1;
    height: 40px;
    width: 40px;
    color: #fff;
    cursor: pointer;
    background: none;
    border: none;
    margin: 0 20px;
    padding: 0;
    align-items: center;
    justify-content: center;
}

@media screen and (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1000;
    }

    .sidebar.sidebar-open {
        transform: translateX(0);
    }

    .dashboard-main {
        margin-left: 0 !important;
        width: 100% !important;
    }
}