:root {
    --bg: #eef8ff;
    --panel: #ffffff;
    --panel-soft: #fffaf0;
    --text: #25314f;
    --muted: #5f6f89;
    --line: #d7e6f4;
    --primary: #17806d;
    --primary-dark: #0f5f54;
    --blue: #2563eb;
    --violet: #7c3aed;
    --pink: #f35fa1;
    --sky: #d9f1ff;
    --mint: #dff7ed;
    --sun: #ffd166;
    --lime: #9be15d;
    --coral: #f9735b;
    --danger: #b42318;
    --warn: #9a6700;
    --radius: 8px;
    --shadow: 0 14px 36px rgba(37, 49, 79, .10);
    --soft-shadow: 0 8px 20px rgba(37, 49, 79, .08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background:
        linear-gradient(135deg, rgba(255, 209, 102, .28), rgba(243, 95, 161, .13) 34%, rgba(37, 99, 235, .16) 68%, rgba(155, 225, 93, .19)),
        repeating-linear-gradient(135deg, rgba(255, 255, 255, .46) 0 10px, transparent 10px 28px),
        linear-gradient(90deg, rgba(37, 99, 235, .10) 0 1px, transparent 1px 64px),
        linear-gradient(0deg, rgba(23, 128, 109, .11) 0 1px, transparent 1px 64px),
        var(--bg);
    color: var(--text);
    font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

body::before {
    color: rgba(37, 49, 79, .09);
    content: "1 2 3 4 5  +  -  x  :  =  FPB  KPK  1/2  3/4  10.000";
    font-size: 54px;
    font-weight: 900;
    left: 0;
    letter-spacing: .04em;
    line-height: 1.8;
    pointer-events: none;
    position: fixed;
    right: 0;
    text-align: center;
    top: 96px;
    transform: rotate(-7deg);
    z-index: 0;
}

a {
    color: var(--primary-dark);
    text-decoration: none;
}

.topbar {
    align-items: center;
    background: rgba(255, 255, 255, .94);
    border-bottom: 4px solid var(--sun);
    box-shadow: 0 6px 22px rgba(37, 49, 79, .07);
    display: flex;
    justify-content: space-between;
    min-height: 72px;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 6;
}

.brand {
    color: var(--primary-dark);
    font-size: 18px;
    font-weight: 800;
}

.topbar nav {
    align-items: center;
    display: flex;
    gap: 16px;
}

.topbar nav a {
    border-radius: 999px;
    color: var(--text);
    font-weight: 800;
    padding: 8px 10px;
}

.topbar nav a:hover {
    background: var(--mint);
}

.page {
    margin: 0 auto;
    max-width: 1180px;
    padding: 32px 20px 72px;
    position: relative;
    z-index: 1;
}

.hero,
.panel,
.question-card,
.stats > div {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--soft-shadow);
}

.hero {
    background:
        linear-gradient(135deg, rgba(217, 241, 255, .98), rgba(255, 250, 240, .96) 42%, rgba(255, 225, 239, .95) 68%, rgba(223, 247, 237, .98)),
        #ffffff;
    border: 2px solid rgba(37, 99, 235, .18);
    box-shadow: var(--shadow);
    overflow: hidden;
    padding: 44px;
    position: relative;
}

.hero::before {
    background:
        linear-gradient(90deg, var(--coral), var(--sun), var(--primary), var(--blue));
    content: "";
    display: block;
    height: 8px;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
}

.hero::after {
    color: rgba(124, 58, 237, .17);
    content: "7 x 8 = 56";
    font-size: 78px;
    font-weight: 900;
    line-height: 1;
    position: absolute;
    right: 26px;
    top: 28px;
    transform: rotate(-8deg);
}

.math-ribbon {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0 4px;
}

.math-ribbon span {
    background: linear-gradient(135deg, #ffffff, #fff7d8);
    border: 2px solid rgba(255, 209, 102, .75);
    border-radius: var(--radius);
    box-shadow: 0 8px 16px rgba(37, 49, 79, .08);
    color: #59410a;
    font-size: 18px;
    font-weight: 900;
    min-width: 74px;
    padding: 9px 12px;
    text-align: center;
}

.hero h1,
.panel h1,
.exam-head h1,
.dashboard-head h1 {
    font-size: 30px;
    line-height: 1.2;
    margin: 0 0 12px;
}

.hero h1 {
    font-size: 38px;
    max-width: 760px;
}

.hero p {
    max-width: 680px;
}

.eyebrow {
    color: var(--blue);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .04em;
    margin: 0 0 8px;
    text-transform: uppercase;
}

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

.actions,
.exam-head,
.dashboard-head {
    align-items: center;
    display: flex;
    gap: 14px;
    justify-content: space-between;
}

.hero .actions {
    justify-content: flex-start;
    margin-top: 18px;
}

.exam-head,
.dashboard-head {
    background: rgba(255, 255, 255, .94);
    border: 1px solid var(--line);
    border-left: 8px solid var(--primary);
    border-radius: var(--radius);
    box-shadow: var(--soft-shadow);
    padding: 20px;
}

.exam-head {
    border-left-color: var(--coral);
}

.button,
button {
    align-items: center;
    background: #ffffff;
    border: 2px solid var(--line);
    border-radius: var(--radius);
    color: var(--text);
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-weight: 900;
    justify-content: center;
    min-height: 46px;
    padding: 10px 16px;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}

.button:hover,
button:hover {
    box-shadow: 0 8px 16px rgba(37, 49, 79, .12);
    transform: translateY(-1px);
}

.button.primary,
button.primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.button.primary:hover,
button.primary:hover {
    background: var(--primary-dark);
}

.danger-button {
    border-color: #f2b8b5;
    color: var(--danger);
    min-height: 38px;
    padding: 7px 12px;
}

.danger-button:hover {
    background: #fff0ee;
}

.panel {
    padding: 26px;
}

.panel.narrow {
    margin: 0 auto;
    max-width: 520px;
}

.student-entry {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, .98), rgba(255, 247, 216, .96)),
        var(--panel);
    border-top: 8px solid var(--pink);
}

.center {
    text-align: center;
}

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

label {
    color: var(--muted);
    display: grid;
    font-weight: 700;
    gap: 6px;
}

input,
select,
textarea {
    background: #fbfdff;
    border: 2px solid var(--line);
    border-radius: var(--radius);
    color: var(--text);
    font: inherit;
    min-height: 46px;
    padding: 9px 12px;
    width: 100%;
}

textarea {
    min-height: 108px;
    resize: vertical;
}

input[type="checkbox"] {
    min-height: auto;
    width: auto;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
    outline: none;
}

.alert {
    border-radius: var(--radius);
    margin: 0 0 18px;
    padding: 12px 14px;
}

.alert.ok {
    background: var(--mint);
    border: 1px solid #9fdcc4;
}

.alert.error {
    background: #fff0ee;
    border: 1px solid #f2b8b5;
    color: var(--danger);
}

.exam-form {
    display: block;
}

.exam-shell {
    align-items: start;
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(0, 1fr) 290px;
    margin-top: 24px;
}

.question-list {
    display: grid;
    gap: 0;
    min-width: 0;
}

.question-card {
    overflow: hidden;
    padding: 20px;
    position: relative;
}

.question-card[hidden] {
    display: none;
}

.question-card::before {
    background: linear-gradient(90deg, var(--primary), var(--blue), var(--sun));
    content: "";
    display: block;
    height: 6px;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
}

.question-meta {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-bottom: 16px;
}

.question-meta strong {
    background: var(--sun);
    border-radius: 999px;
    color: #493700;
    display: inline-flex;
    font-size: 15px;
    font-weight: 900;
    padding: 6px 12px;
}

.question-meta span,
.pill {
    background: var(--sky);
    border-radius: 999px;
    color: #24516d;
    display: inline-flex;
    font-size: 12px;
    font-weight: 900;
    padding: 5px 10px;
}

.pill.warn {
    background: #fff4d6;
    color: var(--warn);
}

.question-image {
    background: #ffffff;
    border: 2px solid #cfe1f2;
    border-radius: var(--radius);
    display: block;
    height: auto;
    max-height: 680px;
    max-width: 100%;
    object-fit: contain;
    padding: 6px;
    width: auto;
}

.question-text {
    background: #ffffff;
    border: 2px solid var(--line);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 18px;
    font-weight: 800;
    margin: 0 0 14px;
    padding: 14px;
}

.media-status {
    background: #fff8dc;
    border: 1px solid rgba(255, 209, 102, .9);
    border-radius: var(--radius);
    color: #6b5207;
    font-size: 13px;
    font-weight: 800;
    margin: 0 0 12px;
    padding: 8px 10px;
}

.media-ready .media-status {
    background: var(--mint);
    border-color: #9fdcc4;
    color: var(--primary-dark);
}

.media-error .media-status {
    background: #fff0ee;
    border-color: #f2b8b5;
    color: var(--danger);
}

.question-panel {
    background:
        linear-gradient(180deg, #ffffff, #fff7df),
        var(--panel);
    border: 2px solid rgba(255, 209, 102, .72);
    border-radius: var(--radius);
    box-shadow: var(--soft-shadow);
    display: grid;
    gap: 14px;
    padding: 16px;
    position: sticky;
    top: 92px;
}

.timer-card,
.progress-card {
    border-radius: var(--radius);
    display: grid;
    gap: 4px;
    padding: 14px;
}

.timer-card {
    background: linear-gradient(135deg, var(--primary), var(--blue));
    color: #ffffff;
}

.timer-card span,
.progress-card span {
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}

.timer-card strong {
    font-size: 30px;
    line-height: 1.1;
}

.time-warning .timer-card {
    background: linear-gradient(135deg, var(--danger), var(--coral));
}

.progress-card {
    background: #ffffff;
    border: 2px solid var(--line);
}

.progress-card strong {
    color: var(--primary-dark);
    font-size: 24px;
}

.progress-track {
    background: #e6eef8;
    border-radius: 999px;
    height: 10px;
    overflow: hidden;
}

.exam-progress {
    background: linear-gradient(90deg, var(--pink), var(--sun), var(--primary));
    display: block;
    height: 100%;
    width: 0;
}

.save-status {
    background: #ffffff;
    border: 2px solid var(--line);
    border-radius: var(--radius);
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    padding: 10px 12px;
}

.save-status.saving {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: var(--blue);
}

.save-status.saved {
    background: var(--mint);
    border-color: #9fdcc4;
    color: var(--primary-dark);
}

.save-status.offline,
.save-status.error {
    background: #fff4d6;
    border-color: var(--sun);
    color: var(--warn);
}

.question-nav-grid {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.jump-question {
    aspect-ratio: 1;
    border-color: #d7e6f4;
    min-height: 0;
    padding: 0;
}

.jump-question.active {
    background: var(--blue);
    border-color: var(--blue);
    color: #ffffff;
}

.jump-question.answered {
    background: var(--mint);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.jump-question.active.answered {
    background: var(--primary);
    color: #ffffff;
}

.exam-controls {
    display: grid;
    gap: 8px;
    grid-template-columns: 1fr 1fr;
}

.exam-controls .primary {
    grid-column: 1 / -1;
}

button:disabled {
    cursor: not-allowed;
    opacity: .55;
    transform: none;
}

.options {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.option {
    align-items: center;
    background: #ffffff;
    border: 2px solid #dbe8f6;
    border-radius: var(--radius);
    color: var(--text);
    cursor: pointer;
    display: grid;
    gap: 10px;
    grid-template-columns: 24px 38px minmax(0, 1fr);
    min-height: 58px;
    padding: 12px;
    transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}

.option:hover {
    border-color: var(--sun);
    box-shadow: 0 8px 18px rgba(37, 49, 79, .08);
}

.option:has(input:checked) {
    background: #f0fff9;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(23, 128, 109, .13);
}

.option input {
    min-height: auto;
    width: 20px;
}

.option-label {
    align-items: center;
    background: var(--coral);
    border-radius: 999px;
    color: #ffffff;
    display: inline-flex;
    font-size: 15px;
    font-weight: 900;
    height: 34px;
    justify-content: center;
    width: 34px;
}

.option img {
    max-height: 180px;
    max-width: 100%;
}

.stats {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin: 18px 0;
}

.stats > div {
    background: linear-gradient(180deg, #ffffff, #f7fbff);
    border-top: 5px solid var(--sun);
    padding: 18px;
}

.stats strong {
    color: var(--primary-dark);
    display: block;
    font-size: 28px;
}

.stats span {
    color: var(--muted);
}

.table-wrap {
    overflow-x: auto;
}

.row-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.row-actions form {
    display: inline-flex;
}

.inline-form {
    display: inline-flex;
}

.form-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-grid .full {
    grid-column: 1 / -1;
}

.checkbox-line {
    align-items: center;
    display: flex;
    flex-direction: row;
    gap: 8px;
}

.editor-preview {
    background: #ffffff;
    border: 2px solid var(--line);
    border-radius: var(--radius);
    display: block;
    max-height: 360px;
    max-width: 100%;
    object-fit: contain;
    padding: 6px;
}

.option-editor-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.option-editor {
    background: #fbfdff;
    border: 2px solid var(--line);
    border-radius: var(--radius);
    display: grid;
    gap: 12px;
    padding: 14px;
}

.option-editor h3 {
    margin: 0;
}

.editor-option-preview {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    max-height: 160px;
    max-width: 100%;
    object-fit: contain;
    padding: 4px;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 12px 10px;
    text-align: left;
    vertical-align: top;
}

th {
    background: #eaf5ff;
    color: #234a6d;
    font-size: 13px;
}

@media (max-width: 760px) {
    .topbar,
    .actions,
    .exam-head,
    .dashboard-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .topbar nav {
        flex-wrap: wrap;
    }

    .hero {
        padding: 24px;
    }

    .hero h1 {
        font-size: 30px;
    }

    .hero::after {
        display: none;
    }

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

    .form-grid,
    .option-editor-grid {
        grid-template-columns: 1fr;
    }

    .exam-shell {
        grid-template-columns: 1fr;
    }

    .question-panel {
        order: -1;
        position: static;
    }

    .question-nav-grid {
        grid-template-columns: repeat(9, minmax(0, 1fr));
    }

    .jump-question {
        font-size: 12px;
    }

    .timer-card strong {
        font-size: 26px;
    }

    .option {
        grid-template-columns: 24px 38px minmax(0, 1fr);
    }
}

@media (max-width: 480px) {
    .page {
        padding-left: 12px;
        padding-right: 12px;
    }

    .question-card,
    .panel {
        padding: 16px;
    }

    .question-nav-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }
}