/* ==========================================================================
   HTML Fundamentals — learning dashboard
   Loads AFTER style.css and reuses its :root design tokens.
   ========================================================================== */

/* ---------- Learning path stepper ---------- */
.path-steps {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 28px 0 18px;
    padding: 0;
}

.path-step {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 600;
}

.path-num {
    display: grid;
    place-items: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--surface-2);
    font-size: 0.75rem;
}

.path-step.is-active {
    color: var(--text);
    border-color: var(--border-strong);
}

.path-step.is-active .path-num {
    background: var(--grad);
    color: #fff;
}

.path-step.is-done {
    color: var(--accent);
    border-color: var(--accent);
}

.path-step.is-done .path-num {
    background: var(--accent-soft);
    color: var(--accent);
}

/* ---------- Progress bar ---------- */
.progress-track {
    height: 10px;
    border-radius: 999px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    background: var(--grad);
    border-radius: 999px;
    transition: width 0.5s ease;
}

.progress-label {
    margin-top: 10px;
    color: var(--muted);
    font-size: 0.85rem;
}

/* ---------- Stats ---------- */
.stats-strip {
    padding-top: 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--muted);
    font-size: 0.85rem;
}

/* ---------- Module cards ---------- */
.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.module-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    animation: cardIn 0.5s ease both;
}

.module-card:hover,
.module-card:focus-visible {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.module-card.is-done {
    border-color: var(--accent);
}

.module-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.module-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-soft);
    color: var(--accent);
}

.module-icon svg {
    width: 22px;
    height: 22px;
}

.module-status {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
}

.module-card.is-done .module-status {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.module-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.module-card p {
    color: var(--text-soft);
    font-size: 0.92rem;
    margin-bottom: 18px;
}

.module-card-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.module-duration {
    color: var(--muted);
    font-size: 0.8rem;
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: none; }
}

/* ---------- Lesson overlay ---------- */
.lesson-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 32px 16px;
    overflow-y: auto;
}

.lesson-overlay[hidden] {
    display: none;
}

.lesson-panel {
    width: 100%;
    max-width: 780px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.lesson-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border);
}

.lesson-head h2 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.lesson-close {
    flex: none;
}

.lesson-steps {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding: 16px 28px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.ls-step {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--muted);
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
}

.ls-step.is-active {
    color: var(--text);
    border-color: var(--accent);
}

.ls-step.is-done {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.lesson-body {
    padding: 28px;
}

.step-pane {
    animation: cardIn 0.35s ease both;
}

.step-pane h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-pane p {
    color: var(--text-soft);
    margin-bottom: 14px;
}

.point-list {
    list-style: none;
    padding: 0;
    margin: 0 0 18px;
}

.point-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    color: var(--text-soft);
}

.point-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}

.code-block {
    background: #0b0d12;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #e5e7eb;
    white-space: pre;
}

/* ---------- Editor + preview ---------- */
.editor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 8px;
}

.editor-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin: 12px 0 8px;
    display: block;
}

.code-input {
    width: 100%;
    min-height: 220px;
    background: #0b0d12;
    color: #e5e7eb;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    resize: vertical;
}

.preview-frame {
    width: 100%;
    height: 220px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #0f1115;
}

.feedback {
    margin-top: 12px;
    font-size: 0.92rem;
    font-weight: 600;
    min-height: 1.4em;
}

.feedback.ok {
    color: var(--secondary);
}

.feedback.bad {
    color: #f28b82;
}

/* ---------- Quiz ---------- */
.quiz-q {
    margin-bottom: 22px;
}

.quiz-q h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quiz-option {
    text-align: left;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.quiz-option:hover {
    border-color: var(--border-strong);
}

.quiz-option.is-correct {
    border-color: var(--secondary);
    background: rgba(106, 219, 210, 0.12);
}

.quiz-option.is-wrong {
    border-color: #f28b82;
    background: rgba(242, 139, 130, 0.12);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, opacity 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: var(--on-primary);
}

.btn-primary:hover {
    background: var(--accent-strong);
}

.btn-ghost {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
}

.btn-ghost:hover {
    border-color: var(--border-strong);
    background: var(--surface-2);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 0.85rem;
}

.lesson-foot {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 20px 28px;
    border-top: 1px solid var(--border);
    background: var(--surface-2);
}

/* ---------- Build section ---------- */
.build-editor-wrap {
    margin-top: 16px;
}

.build-actions {
    display: flex;
    gap: 10px;
    margin-top: 14px;
    flex-wrap: wrap;
}

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
    .module-grid,
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 620px) {
    .module-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .lesson-overlay {
        padding: 0;
    }

    .lesson-panel {
        border-radius: 0;
        min-height: 100vh;
    }

    .lesson-head,
    .lesson-body,
    .lesson-foot,
    .lesson-steps {
        padding-left: 20px;
        padding-right: 20px;
    }
}