/* =============================================
   PyCodeRoom AI Task Generator — Professional UI
   ============================================= */

/* ---------- Reset & Wrapper ---------- */
.pcr-wrapper {
    --pcr-radius: 12px;
    --pcr-radius-sm: 8px;
    --pcr-shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --pcr-shadow-lg: 0 10px 25px -3px rgba(0,0,0,.07), 0 4px 6px -2px rgba(0,0,0,.04);
    --pcr-blue: #2563eb;
    --pcr-blue-dark: #1d4ed8;
    --pcr-blue-light: #dbeafe;
    --pcr-green: #059669;
    --pcr-green-light: #d1fae5;
    --pcr-amber: #d97706;
    --pcr-amber-light: #fef3c7;
    --pcr-red: #dc2626;
    --pcr-red-light: #fee2e2;
    --pcr-gray-50: #f9fafb;
    --pcr-gray-100: #f3f4f6;
    --pcr-gray-200: #e5e7eb;
    --pcr-gray-300: #d1d5db;
    --pcr-gray-400: #9ca3af;
    --pcr-gray-500: #6b7280;
    --pcr-gray-600: #4b5563;
    --pcr-gray-700: #374151;
    --pcr-gray-800: #1f2937;
    --pcr-gray-900: #111827;
    --pcr-font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    max-width: 820px;
    margin: 32px auto;
    font-family: var(--pcr-font);
    color: var(--pcr-gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.pcr-wrapper *, .pcr-wrapper *::before, .pcr-wrapper *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ---------- Card ---------- */
.pcr-card {
    background: #fff;
    border: 1px solid var(--pcr-gray-200);
    border-radius: var(--pcr-radius);
    box-shadow: var(--pcr-shadow);
}

.pcr-card-header {
    padding: 24px 28px 0;
}

.pcr-logo-group {
    display: flex;
    align-items: center;
    gap: 14px;
}

.pcr-logo-icon {
    color: var(--pcr-blue);
    flex-shrink: 0;
}

.pcr-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--pcr-gray-900);
    line-height: 1.3;
}

.pcr-subtitle {
    font-size: 14px;
    color: var(--pcr-gray-500);
    margin-top: 2px;
}

/* ---------- Form ---------- */
.pcr-form-body {
    padding: 24px 28px 28px;
}

.pcr-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.pcr-col {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.pcr-col-full {
    flex-basis: 100%;
}

.pcr-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--pcr-gray-700);
    margin-bottom: 6px;
    letter-spacing: .3px;
}

.pcr-optional {
    font-weight: 400;
    color: var(--pcr-gray-400);
}

.pcr-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    font-family: var(--pcr-font);
    color: var(--pcr-gray-800);
    background: var(--pcr-gray-50);
    border: 1px solid var(--pcr-gray-300);
    border-radius: var(--pcr-radius-sm);
    transition: border-color .15s ease, box-shadow .15s ease;
    appearance: none;
    -webkit-appearance: none;
}

select.pcr-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8.825L.35 3.175l.7-.7L6 7.425l4.95-4.95.7.7z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.pcr-control:focus {
    outline: none;
    border-color: var(--pcr-blue);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
    background: #fff;
}

/* ---------- Actions ---------- */
.pcr-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.pcr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--pcr-font);
    border: none;
    border-radius: var(--pcr-radius-sm);
    cursor: pointer;
    transition: all .15s ease;
    line-height: 1.4;
    white-space: nowrap;
}

.pcr-btn-svg {
    flex-shrink: 0;
}

.pcr-btn-primary {
    background: var(--pcr-blue);
    color: #fff;
    box-shadow: 0 1px 3px rgba(37,99,235,.3);
}

.pcr-btn-primary:hover {
    background: var(--pcr-blue-dark);
    box-shadow: 0 4px 12px rgba(37,99,235,.35);
}

.pcr-btn-primary:active {
    transform: scale(.98);
}

.pcr-btn-primary:disabled {
    opacity: .55;
    cursor: not-allowed;
}

.pcr-btn-outline {
    background: #fff;
    color: var(--pcr-gray-700);
    border: 1px solid var(--pcr-gray-300);
}

.pcr-btn-outline:hover {
    background: var(--pcr-gray-50);
    border-color: var(--pcr-gray-400);
}

.pcr-btn-outline:disabled {
    opacity: .55;
    cursor: not-allowed;
}

/* ---------- Loader ---------- */
.pcr-loader {
    text-align: center;
    padding: 32px 0;
}

.pcr-loader-bar {
    height: 4px;
    background: var(--pcr-gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.pcr-loader-progress {
    width: 40%;
    height: 100%;
    background: var(--pcr-blue);
    border-radius: 4px;
    animation: pcr-slide 1.4s ease-in-out infinite;
}

@keyframes pcr-slide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

.pcr-loader-text {
    font-size: 14px;
    color: var(--pcr-gray-500);
    font-weight: 500;
}

.pcr-dots::after {
    content: '';
    animation: pcr-dots 1.5s steps(4, end) infinite;
}

@keyframes pcr-dots {
    0% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
}

/* ---------- Alert ---------- */
.pcr-alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--pcr-radius-sm);
    margin-top: 20px;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
}

.pcr-alert svg {
    flex-shrink: 0;
    margin-top: 1px;
}

.pcr-alert-error {
    background: var(--pcr-red-light);
    color: var(--pcr-red);
    border: 1px solid #fecaca;
}

/* ---------- Results ---------- */
.pcr-results-container {
    margin-top: 28px;
    background: #fff;
    border: 1px solid var(--pcr-gray-200);
    border-radius: var(--pcr-radius);
    box-shadow: var(--pcr-shadow-lg);
    animation: pcr-fadein .4s ease;
    overflow: hidden;
}

@keyframes pcr-fadein {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.pcr-results-header {
    padding: 28px 28px 20px;
    border-bottom: 1px solid var(--pcr-gray-200);
}

.pcr-results-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--pcr-gray-900);
    margin-bottom: 12px;
    line-height: 1.35;
}

.pcr-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.pcr-tag {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    letter-spacing: .3px;
    text-transform: uppercase;
}

.pcr-tag-level {
    background: var(--pcr-blue-light);
    color: var(--pcr-blue);
}

.pcr-tag-category {
    background: var(--pcr-green-light);
    color: var(--pcr-green);
}

.pcr-results-body {
    padding: 24px 28px;
}

/* ---------- Sections ---------- */
.pcr-section {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--pcr-gray-100);
}

.pcr-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.pcr-section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.pcr-section-header svg {
    color: var(--pcr-blue);
    flex-shrink: 0;
}

.pcr-section-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--pcr-gray-800);
    line-height: 1.4;
}

.pcr-section-header-hints svg {
    color: var(--pcr-amber);
}

.pcr-section-content {
    font-size: 15px;
    color: var(--pcr-gray-700);
}

.pcr-section-content ul,
.pcr-section-content ol {
    padding-left: 22px;
}

.pcr-section-content li {
    margin-bottom: 6px;
}

.pcr-section-content code {
    background: var(--pcr-gray-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--pcr-gray-800);
}

/* Output block */
.pcr-output-block {
    background: var(--pcr-gray-900);
    color: #e5e7eb;
    padding: 16px 20px;
    border-radius: var(--pcr-radius-sm);
    font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
    font-size: 13.5px;
    overflow-x: auto;
    white-space: pre-wrap;
    line-height: 1.65;
}

/* Bonus */
.pcr-section-bonus {
    background: var(--pcr-amber-light);
    margin: 0 -28px -1px;
    padding: 24px 28px !important;
    border-bottom: none !important;
    border-radius: 0;
}

.pcr-section-bonus .pcr-section-header svg {
    color: var(--pcr-amber);
}

.pcr-section-bonus .pcr-section-header h3 {
    color: var(--pcr-amber);
}

/* Hints toggle */
.pcr-toggle-btn {
    margin-left: auto;
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--pcr-font);
    color: var(--pcr-amber);
    background: rgba(217,119,6,.1);
    border: 1px solid rgba(217,119,6,.25);
    border-radius: 20px;
    cursor: pointer;
    transition: all .15s ease;
}

.pcr-toggle-btn:hover {
    background: rgba(217,119,6,.18);
}

/* Footer */
.pcr-results-footer {
    padding: 16px 28px;
    text-align: center;
    font-size: 12px;
    color: var(--pcr-gray-400);
    border-top: 1px solid var(--pcr-gray-100);
    background: var(--pcr-gray-50);
}

.pcr-results-footer strong {
    color: var(--pcr-gray-500);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
    .pcr-wrapper {
        margin: 16px auto;
    }
    .pcr-card-header,
    .pcr-form-body,
    .pcr-results-header,
    .pcr-results-body {
        padding-left: 18px;
        padding-right: 18px;
    }
    .pcr-row {
        flex-direction: column;
        gap: 12px;
    }
    .pcr-actions {
        flex-direction: column;
    }
    .pcr-btn {
        width: 100%;
    }
    .pcr-title {
        font-size: 19px;
    }
    .pcr-results-title {
        font-size: 19px;
    }
    .pcr-section-bonus {
        margin: 0 -18px -1px;
        padding: 20px 18px !important;
    }
}