/* ============================================================
   Loksewa Preparation Hub — styles
   Builds on the design tokens defined in styles.css (:root).
   Visual idea: a field surveyor's exam sheet — a ruled scale-bar
   marks progress, a small flag marks the hint, ticks are the only
   ornament borrowed from the site's cartographic language.
   ============================================================ */

.ls-hero {
    background: linear-gradient(160deg, var(--ink-deep), var(--ink) 70%);
    color: #fff;
    padding: 70px 0 60px;
    position: relative;
    overflow: hidden;
}

.ls-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 0,
        rgba(255, 255, 255, 0.05) 1px,
        transparent 1px,
        transparent 48px
    );
    pointer-events: none;
}

.ls-hero__inner {
    position: relative;
    max-width: 760px;
}

.ls-hero h1 {
    font-size: 2.4rem;
    margin-bottom: 14px;
    color: #fff;
}

.ls-hero p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 620px;
    margin-bottom: 22px;
}

.ls-hero__stats {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.ls-hero__stat {
    border-left: 2px solid var(--ochre);
    padding-left: 12px;
}

.ls-hero__stat strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    line-height: 1.1;
    color: var(--teal);
}

.ls-hero__stat span {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.62);
}

.ls-section {
    padding: 50px 0 90px;
    background-color: var(--void);
}

/* ---------- Tabs ---------- */

.ls-tabs {
    display: flex;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    margin: 36px 0 30px;
    flex-wrap: wrap;
}

.ls-tab {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    background: none;
    border: none;
    padding: 12px 20px;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    border-radius: 6px 6px 0 0;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.ls-tab i {
    margin-right: 7px;
}

.ls-tab:hover {
    color: var(--heading);
    background-color: var(--surface-alt);
}

.ls-tab--active {
    color: var(--heading);
}

.ls-tab--active::after {
    content: '';
    position: absolute;
    left: 10%;
    right: 10%;
    bottom: -1px;
    height: 3px;
    background-color: var(--teal);
    border-radius: 2px 2px 0 0;
}

.ls-panel {
    display: none;
}

.ls-panel--active {
    display: block;
    animation: lsFadeIn 0.35s ease;
}

@keyframes lsFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.ls-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 18px;
}

.ls-panel-head h2 {
    font-size: 1.5rem;
    color: var(--heading);
    margin-bottom: 4px;
}

.ls-panel-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 560px;
}

.ls-meta {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.ls-week-select {
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: 8px 12px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    background-color: var(--surface-hi);
    color: var(--heading);
    min-width: 240px;
}

.ls-shuffle-btn {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    color: var(--heading);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.ls-shuffle-btn:hover {
    border-color: var(--teal);
    color: var(--teal);
}

/* ---------- Quiz card ---------- */

.ls-quiz-root {
    max-width: 700px;
}

.ls-quiz-head {
    margin-bottom: 16px;
}

/* Scale-bar progress: a ruled tick strip, like a surveyor's staff */
.ls-progress {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
}

.ls-tick {
    flex: 1;
    height: 6px;
    background-color: var(--border-strong);
    border-radius: 1px;
}

.ls-tick--done {
    background-color: var(--teal);
}

.ls-tick--current {
    background-color: var(--ochre);
}

.ls-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.ls-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
    position: relative;
}

/* Corner tick marks — a registration-mark motif instead of a drop shadow */
.ls-card::before,
.ls-card::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    opacity: 0.7;
}

.ls-card::before {
    top: -1px;
    left: -1px;
    border-top: 2px solid var(--ochre);
    border-left: 2px solid var(--ochre);
}

.ls-card::after {
    bottom: -1px;
    right: -1px;
    border-bottom: 2px solid var(--ochre);
    border-right: 2px solid var(--ochre);
}

.ls-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--teal);
    background-color: rgba(20, 184, 166, 0.12);
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.ls-question {
    font-family: var(--font-display);
    font-size: 1.2rem;
    line-height: 1.5;
    color: var(--heading);
    margin-bottom: 22px;
}

.ls-options {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 22px;
}

.ls-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.ls-option:hover {
    border-color: var(--teal);
    background-color: rgba(20, 184, 166, 0.07);
}

.ls-option__marker {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
}

.ls-option--selected {
    border-color: var(--teal);
    background-color: rgba(20, 184, 166, 0.1);
}

.ls-option--selected .ls-option__marker {
    border-color: var(--teal);
    color: var(--teal);
    background-color: var(--surface);
}

.ls-option--locked {
    cursor: default;
    pointer-events: none;
}

.ls-option--correct {
    border-color: var(--success);
    background-color: rgba(74, 222, 128, 0.1);
}

.ls-option--correct .ls-option__marker {
    border-color: var(--success);
    background-color: var(--success);
    color: var(--void);
}

.ls-option--incorrect {
    border-color: var(--danger);
    background-color: rgba(248, 113, 113, 0.08);
}

.ls-option--incorrect .ls-option__marker {
    border-color: var(--danger);
    background-color: var(--danger);
    color: var(--void);
}

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

.ls-actions--center {
    justify-content: center;
}

.ls-btn {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 11px 20px;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

.ls-btn--primary {
    background-color: var(--teal);
    color: var(--void);
}

.ls-btn--primary:hover:not(:disabled) {
    background-color: var(--teal-deep);
    color: #fff;
}

.ls-btn--primary:disabled {
    background-color: var(--surface-hi);
    color: var(--text-muted);
    cursor: not-allowed;
}

.ls-btn--ghost {
    background-color: transparent;
    border-color: var(--border-strong);
    color: var(--heading);
}

.ls-btn--ghost:hover:not(:disabled) {
    border-color: var(--ochre);
    color: var(--ochre);
}

.ls-btn--ghost:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* Hint — a small flag, in keeping with a surveyor marking a point */
.ls-hint {
    margin-top: 16px;
    padding: 12px 16px;
    background-color: rgba(217, 164, 65, 0.12);
    border-left: 3px solid var(--ochre);
    border-radius: 4px;
    font-size: 0.92rem;
    color: var(--text);
}

.ls-hint i {
    color: var(--ochre);
}

.ls-feedback {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: 8px;
    animation: lsFadeIn 0.3s ease;
}

.ls-feedback--correct {
    background-color: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.35);
}

.ls-feedback--incorrect {
    background-color: rgba(248, 113, 113, 0.08);
    border: 1px solid rgba(248, 113, 113, 0.3);
}

.ls-feedback__head {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--heading);
}

.ls-feedback--correct .ls-feedback__head {
    color: var(--success);
}

.ls-feedback--incorrect .ls-feedback__head {
    color: var(--danger);
}

.ls-explanation {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--text);
}

.ls-source {
    margin-top: 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
    border-top: 1px dashed var(--border);
    padding-top: 12px;
}

.ls-source a {
    color: var(--teal);
    font-weight: 600;
}

/* ---------- Summary ---------- */

.ls-summary {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 44px 30px;
    text-align: center;
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
}

.ls-summary__score {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--heading);
    font-weight: 700;
}

.ls-summary__remark {
    color: var(--text-muted);
    margin: 10px 0 24px;
}

.ls-empty {
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
    background-color: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: 10px;
}

/* ---------- Info strip: how hints/explanations work ---------- */

.ls-howto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
    margin: 34px 0 10px;
}

.ls-howto__item {
    background-color: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px 20px;
}

.ls-howto__item i {
    color: var(--teal);
    font-size: 1.1rem;
    margin-bottom: 8px;
    display: block;
}

.ls-howto__item h4 {
    font-size: 0.95rem;
    color: var(--heading);
    margin-bottom: 4px;
}

.ls-howto__item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

@media (max-width: 640px) {
    .ls-hero { padding: 50px 0 40px; }
    .ls-hero h1 { font-size: 1.8rem; }
    .ls-card { padding: 22px; }
    .ls-question { font-size: 1.05rem; }
    .ls-panel-head { flex-direction: column; align-items: flex-start; }
}