:root {
    --bg: #f7f9fd;
    --surface: #ffffff;
    --surface-soft: #f1f5ff;
    --surface-muted: #eef3fb;
    --border: #dde5f2;
    --border-strong: #cad5e7;
    --text: #101624;
    --muted: #63708a;
    --blue: #2f63f4;
    --blue-solid: #2f63f4;
    --blue-soft: #e9efff;
    --green: #2f7d3a;
    --green-solid: #2f7d3a;
    --green-soft: #e8f7ea;
    --orange: #9b5616;
    --orange-solid: #9b5616;
    --orange-soft: #fff2df;
    --red: #b8323a;
    --red-solid: #b8323a;
    --red-soft: #ffe8e8;
    --purple: #6f49de;
    --purple-solid: #6f49de;
    --purple-soft: #efe9ff;
    --shadow: 0 12px 28px rgba(31, 45, 75, 0.08);
    --topbar-bg: rgba(247, 249, 253, 0.92);
}

body.dark-theme {
    --bg: #0b0f19;
    --surface: #121826;
    --surface-soft: #1d2438;
    --surface-muted: #151c2d;
    --border: #1f2a40;
    --border-strong: #2c3c5c;
    --text: #f3f5f9;
    --muted: #8896b0;
    --blue: #4c7dff;
    --blue-solid: #2f63f4;
    --blue-soft: #13244d;
    --green: #48c04b;
    --green-solid: #2f7d3a;
    --green-soft: #11341c;
    --orange: #ffa734;
    --orange-solid: #9b5616;
    --orange-soft: #38240f;
    --red: #ff5757;
    --red-solid: #b8323a;
    --red-soft: #3c1212;
    --purple: #8f6eff;
    --purple-solid: #6f49de;
    --purple-soft: #231846;
    --shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
    --topbar-bg: rgba(18, 24, 38, 0.92);
}

body.dark-theme .nav-icon.c-blue {
    color: var(--blue);
    background: #13244d;
    border-color: #1f3773;
}
body.dark-theme .nav-icon.c-purple {
    color: #8f6eff;
    background: #231846;
    border-color: #342468;
}
body.dark-theme .nav-icon.c-orange {
    color: #ffa734;
    background: #38240f;
    border-color: #583917;
}
body.dark-theme .nav-icon.c-green {
    color: #48c04b;
    background: #11341c;
    border-color: #1e522c;
}
body.dark-theme .nav-icon.c-red {
    color: #ff5757;
    background: #3c1212;
    border-color: #5c1e1e;
}
body.dark-theme .nav-icon.c-teal {
    color: #0df5d2;
    background: #0b3c37;
    border-color: #125e56;
}
body.dark-theme .nav-icon.c-pink {
    color: #ff5ba2;
    background: #441029;
    border-color: #641c3e;
}
body.dark-theme .nav-icon.c-gray {
    color: #a3aab6;
    background: #232c3f;
    border-color: #344057;
}

body.dark-theme input::placeholder,
body.dark-theme textarea::placeholder {
    color: var(--muted) !important;
    opacity: 0.6;
}

body.dark-theme select,
body.dark-theme input[type="text"],
body.dark-theme input[type="search"],
body.dark-theme input[type="password"],
body.dark-theme input[type="email"],
body.dark-theme input[type="number"],
body.dark-theme input[type="date"],
body.dark-theme input[type="time"],
body.dark-theme textarea {
    background-color: var(--surface-soft);
    color: var(--text);
    border-color: var(--border);
}

body.dark-theme .sidebar-help {
    background: linear-gradient(135deg, #1d2438, #121826);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, Segoe UI, Arial, Helvetica, sans-serif;
    font-size: 15px;
    line-height: 1.45;
}

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

button,
input,
select {
    font: inherit;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    font-size: 30px;
    line-height: 1.15;
    margin-bottom: 0;
}

h2 {
    font-size: 17px;
    margin-bottom: 16px;
}

.app-shell {
    display: grid;
    grid-template-columns: 292px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-height: 100vh;
    padding: 24px 16px;
    position: sticky;
    top: 0;
}

.brand {
    align-items: center;
    color: var(--blue);
    display: flex;
    font-size: 17px;
    font-weight: 800;
    gap: 12px;
    padding: 6px 12px 18px;
    white-space: nowrap;
}

.brand-mark,
.nav-icon,
.metric-icon,
.file-icon {
    align-items: center;
    display: inline-flex;
    justify-content: center;
}

.brand-mark {
    background: linear-gradient(135deg, #2f63f4, #6f49de);
    border-radius: 10px;
    color: #fff;
    font-weight: 800;
    height: 34px;
    width: 34px;
}

.side-nav {
    display: grid;
    gap: 8px;
}

.nav-link,
.logout-button {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    gap: 12px;
    min-height: 48px;
    padding: 0 14px;
    width: 100%;
}

.nav-link:hover,
.logout-button:hover,
.nav-link[aria-current="page"] {
    background: var(--blue-soft);
    color: var(--blue);
}

.nav-icon {
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    height: 28px;
    width: 28px;
}

.nav-icon.c-blue {
    color: #2f63f4;
    background: #f0f4ff;
    border-color: #dbe4ff;
}

.nav-icon.c-purple {
    color: #6f49de;
    background: #f4f0ff;
    border-color: #e4dbff;
}

.nav-icon.c-orange {
    color: #f29c38;
    background: #fff6ed;
    border-color: #ffe6cc;
}

.nav-icon.c-green {
    color: #55b957;
    background: #f0f9f1;
    border-color: #dcf2de;
}

.nav-icon.c-red {
    color: #e34e4e;
    background: #fdf0f0;
    border-color: #f9dcdc;
}

.nav-icon.c-teal {
    color: #0d9488;
    background: #f0fdfa;
    border-color: #ccfbf1;
}

.nav-icon.c-pink {
    color: #db2777;
    background: #fdf2f8;
    border-color: #fce7f3;
}

.nav-icon.c-gray {
    color: #4b5563;
    background: #f3f4f6;
    border-color: #e5e7eb;
}

.nav-link[aria-current="page"] .nav-icon,
.nav-link:hover .nav-icon,
.logout-button:hover .nav-icon {
    background: var(--blue-solid);
    border-color: var(--blue-solid);
    color: #fff;
}

.logout-form {
    margin: 0;
}

.sidebar-help {
    background: linear-gradient(135deg, #f2f6ff, #ffffff);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-top: auto;
    padding: 18px;
}

.sidebar-help-icon {
    align-items: center;
    background: var(--blue-soft);
    border-radius: 12px;
    color: var(--blue);
    display: inline-flex;
    font-weight: 800;
    height: 46px;
    justify-content: center;
    margin-bottom: 12px;
    width: 46px;
}

.sidebar-help p {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 10px;
}

.sidebar-help a {
    color: var(--blue);
    font-size: 14px;
    font-weight: 800;
}

.main-area {
    min-width: 0;
}

.topbar {
    align-items: center;
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 16px;
    padding: 18px 28px;
    position: sticky;
    top: 0;
    z-index: 5;
}

.calendar-top-icon {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: inline-flex;
    height: 44px;
    justify-content: center;
    width: 44px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(31, 45, 75, 0.05);
    transition: background 0.2s;
}

.calendar-top-icon:hover {
    background: var(--surface-soft);
}

.search-box {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(31, 45, 75, 0.05);
    display: flex;
    gap: 10px;
    max-width: 640px;
    padding: 0 14px;
    width: 100%;
}

.search-box span {
    color: var(--muted);
    font-size: 20px;
}

.search-box input {
    border: 0;
    color: var(--text);
    min-height: 44px;
    outline: none;
    width: 100%;
}

.top-actions {
    align-items: center;
    display: flex;
    gap: 14px;
    margin-left: auto;
}

.notification {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    display: inline-flex;
    font-size: 18px;
    height: 42px;
    justify-content: center;
    position: relative;
    width: 42px;
}

.notification-badge {
    background: var(--red-solid);
    border: 2px solid var(--surface);
    border-radius: 999px;
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    line-height: 1;
    padding: 3px 5px;
    position: absolute;
    right: -4px;
    top: -5px;
}

.profile-chip {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 4px 12px rgba(31, 45, 75, 0.06);
    display: flex;
    gap: 12px;
    min-height: 58px;
    padding: 7px 12px 7px 8px;
}

.avatar {
    align-items: center;
    background: linear-gradient(135deg, #2f63f4, #55b957);
    border-radius: 999px;
    color: #fff;
    display: inline-flex;
    font-weight: 800;
    height: 42px;
    justify-content: center;
    width: 42px;
}

.profile-name {
    font-weight: 800;
    line-height: 1.2;
    max-width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.profile-subtitle {
    color: var(--muted);
    font-size: 12px;
}

.profile-logout {
    background: transparent;
    border: 0;
    color: var(--muted);
    cursor: pointer;
    font-weight: 800;
    padding: 6px;
}

.page {
    padding: 28px;
}

.dashboard-title {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: 24px;
}

.muted,
.eyebrow {
    color: var(--muted);
}

.eyebrow {
    font-size: 13px;
    margin-bottom: 6px;
}

.panel,
.metric-card,
.welcome-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
}

.panel {
    padding: 20px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.panel:hover {
    box-shadow: 0 14px 30px rgba(31, 45, 75, 0.1);
    border-color: var(--border-strong);
}

.dashboard-top {
    display: grid;
    gap: 16px;
    grid-template-columns: 1.4fr 1fr;
    margin-bottom: 18px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.welcome-panel {
    align-items: center;
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 1fr) 150px;
    min-height: 174px;
    overflow: hidden;
    padding: 32px;
}

.welcome-panel .eyebrow {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: 500;
}

.welcome-panel h2 {
    font-size: 32px;
    margin-bottom: 12px;
    line-height: 1.2;
}

.welcome-panel p.muted {
    font-size: 16px;
    line-height: 1.5;
}

.student-art {
    align-self: end;
    height: 126px;
    position: relative;
}

.student-art::before {
    background: linear-gradient(135deg, #dfe8ff, #f2f7ff);
    border-radius: 999px;
    content: "";
    height: 98px;
    position: absolute;
    right: 8px;
    top: 10px;
    width: 98px;
}

.student-head {
    background: #ffbe8c;
    border-radius: 50%;
    height: 34px;
    position: absolute;
    right: 46px;
    top: 26px;
    width: 34px;
    z-index: 2;
}

.student-body {
    background: var(--blue);
    border-radius: 18px 18px 8px 8px;
    height: 58px;
    position: absolute;
    right: 32px;
    top: 58px;
    width: 60px;
    z-index: 2;
}

.student-laptop {
    background: #182b56;
    border-radius: 8px 8px 3px 3px;
    bottom: 10px;
    height: 42px;
    left: 10px;
    position: absolute;
    width: 82px;
    z-index: 3;
}

.student-desk {
    background: #9bb2e7;
    border-radius: 999px;
    bottom: 0;
    height: 8px;
    left: 0;
    position: absolute;
    right: 0;
}

.metric-card {
    min-height: 174px;
    padding: 22px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.metric-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(31, 45, 75, 0.12);
    border-color: var(--blue);
}

.metric-icon {
    border-radius: 12px;
    color: #fff;
    font-weight: 800;
    height: 44px;
    margin-bottom: 18px;
    width: 44px;
}

.metric-icon.blue {
    background: var(--blue-solid);
}

.metric-icon.green {
    background: var(--green-solid);
}

.metric-icon.orange {
    background: var(--orange-solid);
}

.metric-icon.purple {
    background: var(--purple-solid);
}

.metric-label {
    font-size: 14px;
    font-weight: 800;
    margin-bottom: 18px;
}

.metric-value {
    font-size: 30px;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 10px;
}

.metric-note {
    color: var(--muted);
    font-size: 13px;
}

.dashboard-middle {
    display: grid;
    gap: 18px;
    grid-template-columns: 1.4fr 1fr;
    margin-bottom: 18px;
}

.middle-right-stack {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.dashboard-bottom {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(3, 1fr);
}

.panel-heading {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
}

.panel-heading h2 {
    margin-bottom: 0;
}

.panel-link {
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
}

.progress-row {
    display: grid;
    gap: 10px;
    margin-bottom: 28px;
}

.progress-row:last-child {
    margin-bottom: 0;
}

.progress-label {
    align-items: center;
    display: flex;
    justify-content: space-between;
}

.progress-label span {
    font-weight: 800;
}

.progress-label strong {
    font-size: 18px;
}

.progress-track {
    background: #e7edf7;
    border-radius: 999px;
    height: 8px;
    overflow: hidden;
}

.progress-fill {
    background: var(--blue);
    border-radius: inherit;
    height: 100%;
}

.module-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.module-tile {
    border: 1px solid var(--border);
    border-radius: 8px;
    color: inherit;
    display: block;
    padding: 16px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.module-tile:hover,
.resource-card:hover {
    border-color: var(--blue);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(31, 45, 75, 0.12);
}

.module-top {
    align-items: center;
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.module-icon {
    align-items: center;
    background: var(--blue-solid);
    border-radius: 12px;
    color: #fff;
    display: inline-flex;
    font-weight: 800;
    height: 44px;
    justify-content: center;
    width: 44px;
}

.module-tile:nth-child(2n) .module-icon {
    background: var(--green-solid);
}

.module-tile:nth-child(3n) .module-icon {
    background: var(--purple-solid);
}

.module-title {
    font-weight: 800;
    overflow-wrap: anywhere;
}

.module-subtitle {
    color: var(--muted);
    font-size: 13px;
    overflow-wrap: anywhere;
}

.module-progress {
    align-items: center;
    display: grid;
    gap: 10px;
    grid-template-columns: minmax(0, 1fr) auto;
}

.event-list {
    display: grid;
    gap: 0;
}

.event-item {
    align-items: center;
    border-bottom: 1px solid var(--border);
    display: grid;
    gap: 14px;
    grid-template-columns: 56px minmax(0, 1fr) auto 52px;
    padding: 12px 8px;
    border-radius: 8px;
    transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.event-item:hover {
    background: var(--blue-soft);
    padding-left: 14px;
    padding-right: 14px;
}

.event-item:first-child {
    padding-top: 0;
}

.event-date {
    align-items: center;
    background: var(--blue-soft);
    border-radius: 9px;
    color: var(--blue);
    display: inline-flex;
    flex-direction: column;
    font-size: 12px;
    font-weight: 900;
    height: 48px;
    justify-content: center;
    line-height: 1.1;
    width: 44px;
}

.event-date.deadline {
    background: var(--red-soft);
    color: var(--red);
}

.event-date.task {
    background: var(--green-soft);
    color: var(--green);
}

.event-date.study_plan {
    background: var(--purple-soft);
    color: var(--purple);
}

.event-title,
.file-title {
    font-weight: 800;
    overflow-wrap: anywhere;
}

.event-meta,
.file-meta {
    color: var(--muted);
    font-size: 13px;
    overflow-wrap: anywhere;
}

.badge {
    border-radius: 7px;
    font-size: 12px;
    font-weight: 800;
    padding: 6px 9px;
    white-space: nowrap;
}

.badge-lecture {
    background: var(--blue-soft);
    color: var(--blue);
}

.badge-task {
    background: var(--green-soft);
    color: var(--green);
}

.badge-deadline {
    background: var(--red-soft);
    color: var(--red);
}

.badge-study_plan {
    background: var(--purple-soft);
    color: var(--purple);
}

.week-header {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: 18px;
}

.week-range {
    font-weight: 800;
}

.week-days {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    margin-bottom: 14px;
    margin-left: 54px;
}

.week-day {
    border-radius: 9px;
    padding: 8px 4px;
    text-align: center;
}

.week-day.today {
    background: var(--blue-soft);
    color: var(--blue);
}

.week-day-label {
    display: block;
    font-size: 11px;
    font-weight: 800;
    margin-bottom: 4px;
}

.week-day-number {
    font-weight: 900;
}

.schedule-wrap {
    display: grid;
    gap: 10px;
    grid-template-columns: 44px minmax(0, 1fr);
}

.schedule-times {
    display: grid;
    grid-template-rows: repeat(5, 52px);
}

.schedule-times span {
    color: var(--muted);
    font-size: 11px;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding-right: 8px;
    transform: translateY(-8px);
}

.schedule-grid {
    background:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 100% 52px, calc(100% / 7) 100%;
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    grid-template-rows: repeat(5, 52px);
    min-height: 260px;
    padding: 4px;
}

.schedule-event {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border-radius: 6px;
    padding: 4px;
    height: calc(100% - 6px);
    min-height: 0;
    max-height: 46px;
    box-sizing: border-box;
    overflow: hidden;
    position: relative;
}

.schedule-event-title {
    font-size: 9.5px;
    font-weight: 800;
    line-height: 1.2;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.schedule-event span {
    display: block;
    font-size: 8.5px;
    font-weight: 600;
    opacity: 0.85;
    margin-top: 1px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

.schedule-event.lecture {
    background: #e4ecff;
    border: 1px solid #9eb7ff;
    color: #244ab8;
}

.schedule-event.task {
    background: #e8f7ea;
    border: 1px solid #a7dbad;
    color: #24753a;
}

.schedule-event.deadline {
    background: #ffe9d3;
    border: 1px solid #f0b875;
    color: #9b5616;
}

.schedule-event.study_plan {
    background: #efe9ff;
    border: 1px solid #c9b8ff;
    color: #5532ad;
}

.file-list {
    display: grid;
    gap: 12px;
}

.file-row {
    align-items: center;
    display: grid;
    gap: 12px;
    grid-template-columns: 36px minmax(0, 1fr) auto;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.file-row:hover {
    background: var(--blue-soft);
    padding-left: 14px;
    padding-right: 14px;
}

.file-icon {
    background: var(--red-soft);
    border-radius: 8px;
    color: var(--red);
    font-size: 11px;
    font-weight: 900;
    height: 34px;
    width: 34px;
}

.file-size {
    color: var(--muted);
    font-size: 13px;
    white-space: nowrap;
}

.material-search {
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 9px;
    display: flex;
    gap: 10px;
    margin-top: 16px;
    padding: 0 12px;
}

.material-search input {
    border: 0;
    min-height: 38px;
    outline: 0;
    width: 100%;
}

.status-panel {
    align-items: center;
    display: grid;
    gap: 24px;
    grid-template-columns: 150px minmax(0, 1fr);
}

.donut {
    align-items: center;
    background: conic-gradient(var(--donut));
    border-radius: 50%;
    display: flex;
    height: 148px;
    justify-content: center;
    position: relative;
    width: 148px;
}

.donut::after {
    background: var(--surface);
    border-radius: 50%;
    content: "";
    height: 88px;
    position: absolute;
    width: 88px;
}

.donut-center {
    position: relative;
    text-align: center;
    z-index: 1;
}

.donut-center span {
    color: var(--muted);
    display: block;
    font-size: 12px;
}

.donut-center strong {
    font-size: 28px;
}

.status-list {
    display: grid;
    gap: 11px;
}

.status-row {
    align-items: center;
    display: grid;
    gap: 8px;
    grid-template-columns: 12px minmax(0, 1fr) auto;
}

.status-dot {
    border-radius: 50%;
    height: 9px;
    width: 9px;
}

.status-dot.done {
    background: var(--green);
}

.status-dot.progress {
    background: var(--blue);
}

.status-dot.open {
    background: var(--orange);
}

.status-dot.overdue {
    background: var(--red);
}

.status-value {
    font-weight: 800;
    white-space: nowrap;
}

.empty-state {
    align-items: center;
    background: var(--surface-soft);
    border: 1px dashed var(--border);
    border-radius: 12px;
    color: var(--muted);
    display: grid;
    justify-items: center;
    min-height: 130px;
    padding: 24px;
    text-align: center;
}

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

.page-intro p {
    margin-bottom: 0;
}

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

.action-button,
.secondary-button,
.danger-button,
.danger-link {
    align-items: center;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    font-weight: 800;
    justify-content: center;
    min-height: 40px;
    padding: 0 14px;
}

.action-button {
    background: var(--blue-solid);
    border: 1px solid var(--blue-solid);
    color: #fff;
}

.secondary-button {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
}

.danger-button,
.danger-link {
    background: var(--red-soft);
    border: 1px solid #f4c6c6;
    color: var(--red);
}

.toolbar {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-start;
    margin-bottom: 18px;
    padding: 12px;
}

.toolbar-search {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 9px;
    display: flex;
    gap: 10px;
    flex: 1 1 260px;
    max-width: 520px;
    padding: 0 12px;
    width: 100%;
}

.toolbar-search input {
    border: 0;
    min-height: 40px;
    outline: none;
    width: 100%;
}

.toolbar select {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 9px;
    min-height: 42px;
    padding: 0 10px;
}

.toolbar > .secondary-button,
.toolbar > .primary-button {
    flex: 0 0 auto;
}

.stat-strip {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
    margin-bottom: 18px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 8px 22px rgba(31, 45, 75, 0.06);
    overflow: hidden;
    padding: 19px 20px;
    position: relative;
}

.stat-card::before {
    background: var(--blue);
    content: "";
    height: 3px;
    inset: 0 0 auto;
    position: absolute;
}

.stat-card:nth-child(2)::before {
    background: var(--green);
}

.stat-card:nth-child(3)::before {
    background: var(--orange);
}

.stat-card:nth-child(4)::before {
    background: var(--purple);
}

.stat-card:nth-child(5)::before {
    background: var(--red);
}

.stat-card strong {
    display: block;
    font-size: 28px;
    line-height: 1;
    margin-bottom: 6px;
}

.stat-card span {
    color: var(--muted);
    font-size: 13px;
}

.resource-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.resource-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow);
    color: inherit;
    display: grid;
    gap: 14px;
    padding: 18px;
}

.resource-card-header {
    align-items: start;
    display: flex;
    gap: 12px;
}

.resource-icon {
    align-items: center;
    background: var(--blue-solid);
    border-radius: 12px;
    color: #fff;
    display: inline-flex;
    flex: 0 0 auto;
    font-weight: 900;
    height: 44px;
    justify-content: center;
    width: 44px;
}

.resource-card:nth-child(2n) .resource-icon {
    background: var(--green-solid);
}

.resource-card:nth-child(3n) .resource-icon {
    background: var(--purple-solid);
}

.resource-title {
    font-size: 17px;
    font-weight: 900;
    overflow-wrap: anywhere;
}

.resource-meta {
    color: var(--muted);
    font-size: 13px;
    overflow-wrap: anywhere;
}

.resource-description {
    color: #38445c;
    margin-bottom: 0;
    min-height: 42px;
    overflow-wrap: anywhere;
}

.resource-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.detail-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

.info-list {
    display: grid;
    gap: 12px;
}

.info-row {
    border-bottom: 1px solid var(--border);
    display: grid;
    gap: 4px;
    padding-bottom: 12px;
}

.info-row:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.info-row span {
    color: var(--muted);
    font-size: 13px;
}

.info-row strong {
    overflow-wrap: anywhere;
}

.table-list {
    display: grid;
    gap: 10px;
}

.table-row {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: grid;
    gap: 14px;
    grid-template-columns: 112px minmax(0, 1fr) auto;
    min-height: 70px;
    padding: 12px;
    transition: background .15s ease, border-color .15s ease;
}

.table-row:hover {
    background: var(--surface-soft);
    border-color: var(--border-strong);
}

.date-pill {
    background: var(--blue-soft);
    border-radius: 8px;
    color: var(--blue);
    font-weight: 900;
    padding: 8px;
    text-align: center;
}

.task-row {
    grid-template-columns: 112px minmax(0, 1fr) auto;
}

.task-row.overdue {
    border-color: #f4c6c6;
    background: var(--red-soft);
}

.task-summary {
    display: grid;
    gap: 8px;
}

.task-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.status-badge,
.priority-badge,
.type-badge {
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    padding: 5px 9px;
    white-space: nowrap;
}

.status-open {
    background: var(--orange-soft);
    color: #9b5616;
}

.status-in_progress {
    background: var(--blue-soft);
    color: var(--blue);
}

.status-done {
    background: var(--green-soft);
    color: var(--green);
}

.status-upcoming {
    background: var(--blue-soft);
    color: var(--blue);
}

.status-completed {
    background: var(--green-soft);
    color: var(--green);
}

.status-cancelled {
    background: var(--surface-muted);
    color: var(--muted);
}

.status-planned {
    background: var(--purple-soft);
    color: var(--purple);
}

.status-skipped {
    background: var(--surface-muted);
    color: var(--muted);
}

.priority-low {
    background: var(--surface-muted);
    color: var(--muted);
}

.priority-medium {
    background: var(--purple-soft);
    color: var(--purple);
}

.priority-high {
    background: var(--red-soft);
    color: var(--red);
}

.type-assignment {
    background: var(--green-soft);
    color: var(--green);
}

.type-exam {
    background: var(--red-soft);
    color: var(--red);
}

.type-presentation {
    background: var(--purple-soft);
    color: var(--purple);
}

.type-project {
    background: var(--orange-soft);
    color: #9b5616;
}

.type-other {
    background: var(--surface-muted);
    color: var(--muted);
}

.quick-status-form {
    display: inline-flex;
    margin: 0;
}

.quick-status-form button {
    min-height: 34px;
    padding: 0 10px;
}

.form-panel,
.danger-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow);
    max-width: 760px;
    padding: 22px;
    width: 100%;
}

.danger-panel {
    border-color: #f4c6c6;
}

.field textarea,
.field select {
    border: 1px solid var(--border);
    border-radius: 8px;
    min-height: 42px;
    padding: 9px 11px;
    width: 100%;
}

.field textarea {
    resize: vertical;
}

.form-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
}

.section-gap {
    margin-top: 18px;
}

.auth-shell {
    min-height: 100vh;
    padding: 36px 20px;
}

.auth-header {
    margin: 0 auto 24px;
    max-width: 420px;
}

.auth-layout {
    margin: 0 auto;
    max-width: 420px;
}

.form-grid {
    display: grid;
    gap: 14px;
}

.field label {
    display: block;
    font-size: 14px;
    font-weight: 800;
    margin-bottom: 6px;
}

.field input {
    border: 1px solid var(--border);
    border-radius: 8px;
    min-height: 42px;
    padding: 9px 11px;
    width: 100%;
}

.field .errorlist,
.form-errors .errorlist {
    color: var(--red);
    font-size: 13px;
    margin: 6px 0 0;
    padding-left: 18px;
}

.field-hint {
    color: var(--muted);
    display: block;
    font-size: 13px;
    margin-top: 6px;
}

.field-hint a { color: var(--blue); }

.button-row {
    align-items: center;
    display: flex;
    gap: 12px;
    justify-content: space-between;
    margin-top: 4px;
}

.primary-button {
    background: var(--blue-solid);
    border: 1px solid var(--blue-solid);
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    font-weight: 800;
    min-height: 42px;
    padding: 0 16px;
}

@media (max-width: 1400px) {
    .dashboard-top {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        min-height: auto;
        position: static;
    }

    .side-nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sidebar-help {
        display: none;
    }

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

    .dashboard-top,
    .dashboard-grid,
    .right-stack {
        grid-template-columns: 1fr;
    }

    .welcome-panel {
        grid-template-columns: 1fr;
    }

    .student-art {
        display: none;
    }
}

@media (max-width: 640px) {

    .page,
    .topbar,
    .sidebar {
        padding: 18px;
    }

    .side-nav,
    .module-grid,
    .status-panel,
    .stat-strip,
    .resource-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .event-item {
        align-items: start;
        grid-template-columns: 48px minmax(0, 1fr);
    }

    .event-time,
    .event-item .badge {
        justify-self: start;
    }

    .toolbar,
    .table-row,
    .task-row {
        align-items: stretch;
        flex-direction: column;
        grid-template-columns: 1fr;
    }

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

    .page-actions,
    .resource-actions {
        justify-content: flex-start;
        width: 100%;
    }

    .toolbar-search {
        flex-basis: 100%;
        max-width: none;
    }

    .profile-chip {
        width: 100%;
    }
}

/* Autocomplete suggestions dropdown styling */
.autocomplete-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 9px;
    box-shadow: var(--shadow);
    margin-top: 6px;
    max-height: 280px;
    overflow-y: auto;
    z-index: 1000;
}

.autocomplete-suggestion {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 2px;
    text-align: left;
    transition: background 0.15s ease, color 0.15s ease;
}

.autocomplete-suggestion:last-child {
    border-bottom: none;
}

.autocomplete-suggestion:hover,
.autocomplete-suggestion.active {
    background: var(--blue-soft);
    color: var(--blue);
}

.autocomplete-suggestion-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
}

.autocomplete-suggestion-meta {
    font-size: 11px;
    color: var(--muted);
}

.site-footer {
    border-top: 1px solid var(--border);
    margin-top: 40px;
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--muted);
    font-size: 13px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.15s ease;
}

.footer-link:hover {
    color: var(--blue);
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.language-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s ease;
}

.lang-btn:hover {
    border-color: var(--blue);
    color: var(--blue);
}

.lang-btn.active {
    background: var(--blue-solid);
    color: #ffffff;
    border-color: var(--blue-solid);
}

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

.social-icon {
    color: var(--muted);
    transition: color 0.15s ease, transform 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.social-icon:hover {
    color: var(--blue);
    transform: translateY(-2px);
}

.profile-menu-item:hover {
    background: var(--surface-soft) !important;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}