/* === CyfrowaSzkolaAI App Components === */

/* Form Validation */
.field-error { color: #ef4444; font-size: 0.8rem; margin-top: 2px; display: block; }

/* Page Header */
.cs-page-header {
    padding: var(--cs-space-6) 0 var(--cs-space-4);
    border-bottom: 1px solid var(--cs-border);
    margin-bottom: var(--cs-space-6);
}
.cs-page-title {
    font-size: var(--cs-text-2xl);
    font-weight: var(--cs-font-bold);
    color: var(--cs-text-primary);
    margin: 0 0 var(--cs-space-1);
    line-height: var(--cs-leading-tight);
}
.cs-page-subtitle {
    font-size: var(--cs-text-sm);
    color: var(--cs-text-secondary);
    margin: 0;
}

/* Section header */
.cs-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--cs-space-4);
}
.cs-section-title {
    font-size: var(--cs-text-lg);
    font-weight: var(--cs-font-semibold);
    color: var(--cs-text-primary);
    margin: 0;
}

/* Action bar */
.cs-action-bar {
    display: flex;
    align-items: center;
    gap: var(--cs-space-2);
    flex-wrap: wrap;
    margin-bottom: var(--cs-space-4);
}

/* Status badges */
.cs-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--cs-space-1);
    padding: 2px var(--cs-space-2);
    border-radius: var(--cs-radius-full);
    font-size: var(--cs-text-xs);
    font-weight: var(--cs-font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.cs-badge-success { background: rgba(34,197,94,0.12); color: #4ade80; border: 1px solid rgba(34,197,94,0.2); }
.cs-badge-warning { background: rgba(245,158,11,0.12); color: #fbbf24; border: 1px solid rgba(245,158,11,0.2); }
.cs-badge-danger  { background: rgba(239,68,68,0.12);  color: #f87171; border: 1px solid rgba(239,68,68,0.2); }
.cs-badge-info    { background: rgba(59,130,246,0.12); color: #60a5fa; border: 1px solid rgba(59,130,246,0.2); }
.cs-badge-neutral { background: rgba(255,255,255,0.06); color: var(--cs-text-secondary); border: 1px solid var(--cs-border); }

/* Course card */
.cs-course-card {
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: var(--cs-radius-lg);
    overflow: hidden;
    transition: border-color var(--cs-transition), transform var(--cs-transition);
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.cs-course-card:hover { border-color: var(--cs-border-strong); transform: translateY(-2px); }
.cs-course-card-thumb { width: 100%; height: 160px; object-fit: cover; background: var(--cs-bg-elevated); }
.cs-course-card-body { padding: var(--cs-space-4); flex: 1; display: flex; flex-direction: column; gap: var(--cs-space-2); }
.cs-course-card-title { font-size: var(--cs-text-base); font-weight: var(--cs-font-semibold); color: var(--cs-text-primary); line-height: var(--cs-leading-tight); margin: 0; }
.cs-course-card-desc { font-size: var(--cs-text-sm); color: var(--cs-text-secondary); line-height: var(--cs-leading-normal); margin: 0; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cs-course-card-footer { padding: var(--cs-space-3) var(--cs-space-4); border-top: 1px solid var(--cs-border); display: flex; align-items: center; justify-content: space-between; }
.cs-course-card-price { font-size: var(--cs-text-base); font-weight: var(--cs-font-bold); color: var(--cs-success); }

/* States: Loading */
.cs-loading-overlay {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--cs-space-4);
    padding: var(--cs-space-16);
    color: var(--cs-text-secondary);
}

/* States: Empty */
.cs-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: var(--cs-space-4);
    padding: var(--cs-space-12) var(--cs-space-6);
    color: var(--cs-text-secondary);
}
.cs-empty-state-icon { font-size: 3rem; opacity: 0.4; }
.cs-empty-state-title { font-size: var(--cs-text-lg); font-weight: var(--cs-font-semibold); color: var(--cs-text-primary); margin: 0; }
.cs-empty-state-desc { font-size: var(--cs-text-sm); margin: 0; max-width: 320px; }

/* States: Error */
.cs-error-state {
    background: rgba(239,68,68,0.06);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: var(--cs-radius-lg);
    padding: var(--cs-space-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--cs-space-3);
    text-align: center;
    color: #f87171;
}

/* Skeleton */
@keyframes cs-skeleton { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.cs-skeleton {
    background: linear-gradient(90deg, var(--cs-bg-elevated) 25%, rgba(255,255,255,0.06) 50%, var(--cs-bg-elevated) 75%);
    background-size: 200% 100%;
    animation: cs-skeleton 1.5s ease-in-out infinite;
    border-radius: var(--cs-radius);
}
.cs-skeleton-text { height: 1em; margin-bottom: var(--cs-space-2); }
.cs-skeleton-title { height: 1.5em; margin-bottom: var(--cs-space-3); width: 60%; }
.cs-skeleton-card { height: 200px; border-radius: var(--cs-radius-lg); }

/* Stat card */
.cs-stat-card {
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: var(--cs-radius-lg);
    padding: var(--cs-space-4) var(--cs-space-6);
    display: flex;
    flex-direction: column;
    gap: var(--cs-space-1);
}
.cs-stat-value { font-size: var(--cs-text-3xl); font-weight: var(--cs-font-bold); color: var(--cs-text-primary); line-height: 1; }
.cs-stat-label { font-size: var(--cs-text-sm); color: var(--cs-text-secondary); }
.cs-stat-change { font-size: var(--cs-text-xs); }
.cs-stat-change-up { color: var(--cs-success); }
.cs-stat-change-down { color: var(--cs-danger); }

/* Alert/inline messages */
.cs-alert {
    border-radius: var(--cs-radius-lg);
    padding: var(--cs-space-3) var(--cs-space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--cs-space-3);
    font-size: var(--cs-text-sm);
    line-height: var(--cs-leading-normal);
}
.cs-alert-danger  { background: rgba(239,68,68,0.08);  border: 1px solid rgba(239,68,68,0.2);  color: #f87171; }
.cs-alert-success { background: rgba(34,197,94,0.08);  border: 1px solid rgba(34,197,94,0.2);  color: #4ade80; }
.cs-alert-warning { background: rgba(245,158,11,0.08); border: 1px solid rgba(245,158,11,0.2); color: #fbbf24; }
.cs-alert-info    { background: rgba(59,130,246,0.08);  border: 1px solid rgba(59,130,246,0.2);  color: #60a5fa; }

/* Filter bar */
.cs-filter-bar {
    background: var(--cs-bg-elevated);
    border: 1px solid var(--cs-border);
    border-radius: var(--cs-radius-lg);
    padding: var(--cs-space-4);
    margin-bottom: var(--cs-space-4);
    display: flex;
    flex-wrap: wrap;
    gap: var(--cs-space-3);
    align-items: flex-end;
}

/* Auth forms */
.cs-auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--cs-space-4);
    background: var(--cs-bg);
}
.cs-auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--cs-bg-elevated);
    border: 1px solid var(--cs-border);
    border-radius: var(--cs-radius-xl);
    padding: var(--cs-space-8);
}
.cs-auth-title { font-size: var(--cs-text-2xl); font-weight: var(--cs-font-bold); margin: 0 0 var(--cs-space-2); }
.cs-auth-subtitle { font-size: var(--cs-text-sm); color: var(--cs-text-secondary); margin: 0 0 var(--cs-space-6); }
.cs-auth-footer { text-align: center; margin-top: var(--cs-space-4); font-size: var(--cs-text-sm); color: var(--cs-text-secondary); }
.cs-auth-footer a { color: var(--cs-text-link); text-decoration: none; }
.cs-auth-footer a:hover { text-decoration: underline; }

/* Course card – stronger hover */
.cs-course-card:hover {
    border-color: var(--cs-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(99,102,241,0.18);
}
.cs-course-card-thumb-wrap {
    position: relative;
    overflow: hidden;
    height: 180px;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}
.cs-course-card-thumb-wrap img { width: 100%; height: 100%; object-fit: cover; }
.cs-course-card-thumb-placeholder {
    font-size: 3rem;
    opacity: 0.35;
}
/* AI badge overlay */
.cs-course-card-ai-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 99px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    box-shadow: 0 2px 8px rgba(99,102,241,0.4);
}
/* Level color chips */
.cs-level-beginner     { background: rgba(34,197,94,0.12);  color: #4ade80;  border: 1px solid rgba(34,197,94,0.25); }
.cs-level-intermediate { background: rgba(245,158,11,0.12); color: #fbbf24;  border: 1px solid rgba(245,158,11,0.25); }
.cs-level-advanced     { background: rgba(239,68,68,0.12);  color: #f87171;  border: 1px solid rgba(239,68,68,0.25); }

/* ── LESSON PLAYER ── */

/* Full-width media banner */
.lp-media-banner {
    width: 100%;
    background: #000;
    position: relative;
}
.lp-media-inner {
    max-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #050a14;
    overflow: hidden;
}
.lp-video {
    width: 100%;
    max-height: 480px;
    display: block;
}
.lp-video-placeholder {
    width: 100%;
    min-height: 260px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    color: rgba(255,255,255,0.25);
    cursor: default;
}
.lp-video-placeholder-icon { font-size: 4rem; opacity: 0.3; }
.lp-video-placeholder-label { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; }

/* Progress strip below video */
.lp-progress-strip {
    height: 3px;
    background: rgba(255,255,255,0.08);
    width: 100%;
}
.lp-progress-fill {
    height: 100%;
    background: var(--cs-primary);
    transition: width 0.6s ease;
}
.lp-progress-fill--done { background: var(--cs-success); }

/* Breadcrumb */
.lp-breadcrumb { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.lp-breadcrumb-link { font-size: 0.82rem; color: var(--cs-text-secondary); text-decoration: none; }
.lp-breadcrumb-link:hover { color: var(--cs-primary); }
.lp-breadcrumb-sep { color: rgba(255,255,255,0.2); font-size: 0.8rem; }
.lp-breadcrumb-current { font-size: 0.82rem; color: var(--cs-text-primary); }

/* Title & meta */
.lp-lesson-header {}
.lp-lesson-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--cs-text-primary);
    margin: 0 0 6px;
    line-height: 1.25;
}
.lp-lesson-meta { font-size: 0.82rem; color: var(--cs-text-secondary); }
.lp-badge-done {
    display: inline-flex;
    align-items: center;
    background: rgba(34,197,94,0.12);
    color: #4ade80;
    border: 1px solid rgba(34,197,94,0.25);
    border-radius: 99px;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 10px;
    white-space: nowrap;
}

/* Lesson content body */
.lp-content-body {
    font-size: 1.02rem;
    line-height: 1.8;
    color: var(--cs-text-primary);
    max-width: 72ch;
}
.lp-content-body h2,
.lp-content-body h3,
.lp-content-body h4 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--cs-text-primary);
}
.lp-content-body h2 { font-size: 1.4rem; }
.lp-content-body h3 { font-size: 1.15rem; }
.lp-content-body p { margin-bottom: 1rem; }
.lp-content-body pre {
    background: var(--cs-bg-elevated);
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    overflow-x: auto;
    font-size: 0.88rem;
    line-height: 1.6;
}
.lp-content-body code:not(pre code) {
    background: rgba(99,102,241,0.12);
    color: #a5b4fc;
    border-radius: 4px;
    padding: 1px 5px;
    font-size: 0.9em;
}
.lp-content-body ul, .lp-content-body ol { padding-left: 1.4rem; margin-bottom: 1rem; }
.lp-content-body li { margin-bottom: 0.35rem; }
.lp-content-body blockquote {
    border-left: 3px solid var(--cs-primary);
    padding-left: 1rem;
    margin-left: 0;
    color: var(--cs-text-secondary);
    font-style: italic;
}
.lp-content-body a { color: var(--cs-primary); text-decoration: underline; }
.lp-content-body img { max-width: 100%; border-radius: 8px; margin: 1rem 0; }

/* Bottom action bar */
.lp-action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 1.5rem;
    border-top: 1px solid var(--cs-border);
    flex-wrap: wrap;
}
.lp-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.18s ease;
    text-decoration: none;
}
.lp-btn:disabled { opacity: 0.38; cursor: not-allowed; }
.lp-btn-ghost  { background: transparent; color: var(--cs-text-secondary); border: 1px solid var(--cs-border); }
.lp-btn-ghost:hover:not(:disabled) { background: var(--cs-bg-elevated); color: var(--cs-text-primary); }
.lp-btn-primary { background: var(--cs-primary); color: #fff; }
.lp-btn-primary:hover:not(:disabled) { background: var(--cs-primary-hover, #4f46e5); }
.lp-btn-success { background: rgba(34,197,94,0.15); color: #4ade80; border: 1px solid rgba(34,197,94,0.3); }
.lp-btn-success:hover:not(:disabled) { background: rgba(34,197,94,0.25); }
.lp-btn-quiz { background: linear-gradient(135deg, #6366f1, #8b5cf6); color: #fff; }
.lp-btn-quiz:hover:not(:disabled) { opacity: 0.9; }

/* Sidebar */
.lp-sidebar {
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: 12px;
    overflow: hidden;
    position: sticky;
    top: 80px;
}
.lp-sidebar-header {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    font-size: 0.88rem;
    font-weight: 600;
    border-bottom: 1px solid var(--cs-border);
    background: var(--cs-bg-elevated);
}
.lp-sidebar-count {
    font-size: 0.75rem;
    color: var(--cs-text-secondary);
    background: var(--cs-bg);
    border-radius: 99px;
    padding: 2px 8px;
}
.lp-sidebar-progress-wrap {
    height: 3px;
    background: rgba(255,255,255,0.06);
}
.lp-sidebar-progress-bar {
    height: 100%;
    background: var(--cs-primary);
    transition: width 0.4s ease;
}
.lp-lesson-list {
    max-height: 460px;
    overflow-y: auto;
    padding: 6px 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}
.lp-lesson-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    cursor: pointer;
    transition: background 0.15s;
    border-left: 3px solid transparent;
}
.lp-lesson-item:hover { background: var(--cs-bg-elevated); }
.lp-lesson-item--active {
    background: rgba(99,102,241,0.1);
    border-left-color: var(--cs-primary);
}
.lp-lesson-item--done .lp-lesson-item-title { color: var(--cs-text-secondary); }
.lp-lesson-item-num {
    width: 22px;
    height: 22px;
    min-width: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--cs-text-secondary);
    font-weight: 600;
}
.lp-lesson-item-info { flex: 1; min-width: 0; }
.lp-lesson-item-title {
    font-size: 0.82rem;
    color: var(--cs-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Skeleton */
.lp-video-skeleton {
    width: 100%;
    height: 280px;
    background: linear-gradient(90deg, #1e293b 25%, #2d3d55 50%, #1e293b 75%);
    background-size: 200% 100%;
    animation: cs-skeleton 1.5s ease-in-out infinite;
}
.skeleton-text {
    height: 0.9em;
    border-radius: 4px;
    background: linear-gradient(90deg, #1e293b 25%, #2d3d55 50%, #1e293b 75%);
    background-size: 200% 100%;
    animation: cs-skeleton 1.5s ease-in-out infinite;
}
.skeleton-text-title {
    height: 1.6em;
    border-radius: 4px;
    background: linear-gradient(90deg, #1e293b 25%, #2d3d55 50%, #1e293b 75%);
    background-size: 200% 100%;
    animation: cs-skeleton 1.5s ease-in-out infinite;
}

/* Error card */
.lp-error-card {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: 16px;
    max-width: 460px;
    margin: 0 auto;
}
.lp-error-icon { font-size: 2.5rem; color: #f87171; }

/* ── QUIZ PLAYER ── */

.qp-loading-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(99,102,241,0.2);
    border-top-color: var(--cs-primary);
    border-radius: 50%;
    animation: qp-spin 0.8s linear infinite;
}
@keyframes qp-spin { to { transform: rotate(360deg); } }

.qp-error-card {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--cs-bg-card);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: 16px;
    max-width: 440px;
    margin: 0 auto;
}
.qp-error-icon { font-size: 2.5rem; color: #f87171; }

/* Header */
.qp-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}
.qp-quiz-title { font-size: 1.1rem; font-weight: 700; color: var(--cs-text-primary); }
.qp-close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cs-bg-elevated);
    color: var(--cs-text-secondary);
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}
.qp-close-btn:hover { background: rgba(239,68,68,0.15); color: #f87171; }

/* Step progress bar */
.qp-step-bar {
    height: 5px;
    background: rgba(255,255,255,0.07);
    border-radius: 99px;
    overflow: hidden;
}
.qp-step-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--cs-primary), #8b5cf6);
    border-radius: 99px;
    transition: width 0.4s ease;
}

/* Question card */
.qp-question-card {
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: 14px;
    padding: 1.5rem 1.75rem;
}
.qp-question-num {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cs-primary);
    opacity: 0.8;
}
.qp-question-text {
    font-size: clamp(1.05rem, 2.5vw, 1.3rem);
    font-weight: 600;
    color: var(--cs-text-primary);
    line-height: 1.45;
    margin: 0;
}

/* Answer buttons */
.qp-answers {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.qp-answer-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 14px 18px;
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: 10px;
    color: var(--cs-text-primary);
    font-size: 0.95rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}
.qp-answer-btn:hover:not(:disabled) {
    border-color: rgba(99,102,241,0.5);
    background: rgba(99,102,241,0.06);
}
.qp-answer-btn--selected {
    border-color: var(--cs-primary);
    background: rgba(99,102,241,0.12);
}
.qp-answer-letter {
    width: 30px;
    height: 30px;
    min-width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.07);
    border: 1px solid var(--cs-border);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--cs-text-secondary);
}
.qp-answer-btn--selected .qp-answer-letter {
    background: var(--cs-primary);
    border-color: var(--cs-primary);
    color: #fff;
}
.qp-answer-text { flex: 1; }
.qp-answer-check { margin-left: auto; color: var(--cs-primary); }

/* Navigation row */
.qp-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.5rem;
    border-top: 1px solid var(--cs-border);
    flex-wrap: wrap;
    gap: 10px;
}
.qp-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.18s ease;
    text-decoration: none;
}
.qp-btn:disabled { opacity: 0.38; cursor: not-allowed; }
.qp-btn-ghost     { background: transparent; color: var(--cs-text-secondary); border: 1px solid var(--cs-border); }
.qp-btn-ghost:hover:not(:disabled) { background: var(--cs-bg-elevated); color: var(--cs-text-primary); }
.qp-btn-primary   { background: var(--cs-primary); color: #fff; }
.qp-btn-primary:hover:not(:disabled) { filter: brightness(1.1); }
.qp-btn-secondary { background: var(--cs-bg-elevated); color: var(--cs-text-secondary); border: 1px solid var(--cs-border); }
.qp-btn-secondary:hover { background: var(--cs-bg-card); }
.qp-btn-quiz      { background: linear-gradient(135deg, #6366f1, #8b5cf6); color: #fff; }
.qp-btn-quiz:hover:not(:disabled) { opacity: 0.9; }

/* ── RESULT SCREEN ── */
.qp-result-card {
    max-width: 640px;
    margin: 0 auto;
    background: var(--cs-bg-card);
    border: 1px solid var(--cs-border);
    border-radius: 18px;
    padding: 2.5rem 2rem;
    text-align: center;
}

/* Circular gauge */
.qp-score-gauge {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 0 auto;
}
.qp-gauge-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}
.qp-gauge-bg {
    fill: none;
    stroke: rgba(255,255,255,0.07);
    stroke-width: 10;
}
.qp-gauge-fill {
    fill: none;
    stroke-width: 10;
    stroke-linecap: round;
    transition: stroke-dasharray 0.8s cubic-bezier(0.16,1,0.3,1);
}
.gauge-excellent { stroke: #4ade80; }
.gauge-good      { stroke: #60a5fa; }
.gauge-pass      { stroke: #fbbf24; }
.gauge-fail      { stroke: #f87171; }
.qp-gauge-label {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.qp-gauge-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--cs-text-primary);
    line-height: 1;
}
.qp-gauge-pct { font-size: 1rem; font-weight: 600; }
.qp-gauge-sub { font-size: 0.78rem; color: var(--cs-text-secondary); margin-top: 3px; }

.qp-result-title { font-size: 1.5rem; font-weight: 700; color: var(--cs-text-primary); }

/* Per-answer review list */
.qp-review-list { text-align: left; display: flex; flex-direction: column; gap: 8px; }
.qp-review-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 0.88rem;
}
.qp-review-correct { background: rgba(34,197,94,0.07);  border: 1px solid rgba(34,197,94,0.18); }
.qp-review-wrong   { background: rgba(239,68,68,0.07);  border: 1px solid rgba(239,68,68,0.18); }
.qp-review-icon { font-size: 1rem; padding-top: 2px; }
.qp-review-correct .qp-review-icon { color: #4ade80; }
.qp-review-wrong   .qp-review-icon { color: #f87171; }
.qp-review-q { color: var(--cs-text-primary); margin-bottom: 3px; font-weight: 500; }
.qp-review-correct-ans { font-size: 0.8rem; color: var(--cs-text-secondary); }

/* Responsive adjustments for lesson player */
@media (max-width: 992px) {
    .lp-sidebar { position: static; }
    .lp-media-inner { max-height: 56vw; min-height: 200px; }
}
@media (max-width: 576px) {
    .lp-action-bar { flex-direction: column; align-items: stretch; }
    .lp-action-bar .lp-btn { justify-content: center; }
    .qp-result-card { padding: 1.5rem 1rem; }
    .qp-score-gauge { width: 130px; height: 130px; }
    .qp-gauge-num { font-size: 1.8rem; }
}

/* ── ERROR PAGES (404 / 403 / 500) ── */
.minimal-layout-body {
    margin: 0;
    background: var(--cs-bg, #0f172a);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.error-page-container {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}
.error-page-card {
    background: var(--cs-bg-card, #1e293b);
    border: 1px solid var(--cs-border, rgba(255,255,255,0.08));
    border-radius: 20px;
    padding: 3rem 2.5rem;
    text-align: center;
    max-width: 480px;
    width: 100%;
}
.error-page-code {
    font-size: 5rem;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}
.error-page-icon { font-size: 3rem; margin-bottom: 1rem; }
.error-page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cs-text-primary, #f8fafc);
    margin: 0 0 0.75rem;
}
.error-page-desc {
    font-size: 0.95rem;
    color: var(--cs-text-secondary, #94a3b8);
    line-height: 1.6;
    margin: 0 0 2rem;
}
.error-page-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.error-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.18s ease;
}
.error-btn-primary {
    background: var(--cs-primary, #6366f1);
    color: #fff;
}
.error-btn-primary:hover { filter: brightness(1.1); color: #fff; }
.error-btn-secondary {
    background: var(--cs-bg-elevated, #334155);
    color: var(--cs-text-secondary, #94a3b8);
    border: 1px solid var(--cs-border, rgba(255,255,255,0.08));
}
.error-btn-secondary:hover { background: var(--cs-bg-card, #1e293b); color: var(--cs-text-primary, #f8fafc); }