/* ============================================
   SyntexLab — Brief (опросник) — стили
   ============================================ */

body.brief-page {
    background: var(--bg-primary);
    background-image:
        linear-gradient(rgba(124, 252, 0, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 252, 0, 0.025) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* Отключаем защиту от копирования для опросника (нужно вводить текст) */
body.brief-page,
body.brief-page * {
    -webkit-user-select: auto !important;
    user-select: auto !important;
}

.brief-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === HEADER === */
.brief-header {
    padding: 16px 24px;
    background: rgba(10, 10, 20, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
    position: sticky;
    top: 0;
    z-index: 100;
}

.brief-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: auto;
}

.brief-close:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: rotate(90deg);
}

.brief-close svg {
    width: 18px;
    height: 18px;
}

.brief-header__info {
    color: var(--text-secondary);
    font-size: 14px;
}

.brief-header__client strong {
    color: var(--accent);
}

/* === INTRO === */
.brief-intro {
    padding: 28px 0 24px;
    text-align: center;
}

.brief-title {
    font-size: clamp(28px, 4.2vw, 44px);
    font-weight: 900;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-top: 10px;
    margin-bottom: 10px;
}

.brief-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.brief-description {
    max-width: 640px;
    margin: 0 auto 18px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.brief-meta {
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.brief-meta__item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--accent-dim);
    border: 1px solid var(--border-accent);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
}

.brief-meta__item svg {
    width: 16px;
    height: 16px;
}

/* === PROGRESS BAR === */
.brief-progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    position: sticky;
    top: 80px;
    z-index: 99;
    margin-bottom: 30px;
}

.brief-progress-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #5ad400);
    width: 0;
    transition: width 0.4s ease;
    box-shadow: 0 0 20px rgba(124, 252, 0, 0.4);
}

/* === MAIN === */
.brief-main {
    padding-bottom: 60px;
}

.brief-main .brief-container {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
    align-items: start;
}

/* === SIDEBAR NAV === */
.brief-nav {
    position: sticky;
    top: 110px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
}

.brief-nav__title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.brief-nav__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.brief-nav__list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.brief-nav__list li:hover {
    background: rgba(124, 252, 0, 0.06);
    color: var(--text-primary);
}

.brief-nav__list li.active {
    background: var(--accent-dim);
    color: var(--accent);
    font-weight: 600;
}

.brief-nav__list li.completed::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    font-size: 14px;
}

.brief-nav__list li:not(.completed)::before {
    content: '';
    width: 14px;
    height: 14px;
    border: 1.5px solid var(--border);
    border-radius: 50%;
    flex-shrink: 0;
}

.brief-nav__list li.active:not(.completed)::before {
    border-color: var(--accent);
}

/* === FORM === */
.brief-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.brief-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    scroll-margin-top: 100px;
}

.brief-section__header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 28px;
    background: linear-gradient(90deg, rgba(124, 252, 0, 0.04), transparent);
    border-bottom: 1px solid var(--border);
}

.brief-section__num {
    font-size: 13px;
    font-weight: 800;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 6px 12px;
    border-radius: 8px;
    letter-spacing: 1px;
}

.brief-section__title {
    font-size: 22px;
    font-weight: 800;
    margin: 0;
}

.brief-section__body {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* === FIELDS === */
.brief-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.brief-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.brief-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.brief-hint {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.brief-input,
.brief-textarea {
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
    width: 100%;
}

.brief-textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.5;
}

.brief-input:focus,
.brief-textarea:focus {
    border-color: var(--accent);
    background: rgba(124, 252, 0, 0.04);
    box-shadow: 0 0 0 3px rgba(124, 252, 0, 0.1);
}

.brief-input::placeholder,
.brief-textarea::placeholder {
    color: var(--text-muted);
}

/* === CHECKBOXES (классические) === */
.brief-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.brief-checkboxes--grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px;
}

.brief-checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.brief-checkbox:hover {
    border-color: rgba(124, 252, 0, 0.3);
}

.brief-checkbox input {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    background: var(--bg-primary);
    transition: var(--transition);
}

.brief-checkbox input:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.brief-checkbox input:checked::after {
    content: '✓';
    position: absolute;
    color: var(--bg-primary);
    font-weight: 800;
    font-size: 13px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.brief-checkbox input:checked + span {
    color: var(--accent);
}

.brief-checkbox span {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

/* === RADIO === */
.brief-radio-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.brief-radio {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: var(--bg-primary);
    border: 1.5px solid var(--border);
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    font-size: 14px;
    color: var(--text-secondary);
}

.brief-radio:hover {
    border-color: rgba(124, 252, 0, 0.3);
}

.brief-radio input {
    appearance: none;
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: var(--transition);
}

.brief-radio input:checked {
    border-color: var(--accent);
    border-width: 5px;
    background: var(--bg-primary);
}

.brief-radio input:checked + span {
    color: var(--accent);
    font-weight: 600;
}

.brief-radio:has(input:checked) {
    background: var(--accent-dim);
    border-color: var(--accent);
}

/* === CARDS GRID (для решений с описаниями) === */
.brief-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.brief-card-check {
    cursor: pointer;
    user-select: none;
}

.brief-card-check input {
    display: none;
}

.brief-card-check__inner {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px;
    background: var(--bg-primary);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition);
    height: 100%;
}

.brief-card-check:hover .brief-card-check__inner {
    border-color: rgba(124, 252, 0, 0.4);
    background: rgba(124, 252, 0, 0.03);
}

.brief-card-check input:checked + .brief-card-check__inner {
    border-color: var(--accent);
    background: rgba(124, 252, 0, 0.08);
    box-shadow: 0 0 0 1px var(--accent);
}

.brief-card-check__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.brief-card-check__desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

.brief-card-check input:checked + .brief-card-check__inner .brief-card-check__title {
    color: var(--accent);
}

/* === SUBMIT === */
.brief-submit {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.brief-submit__hint {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 14px;
}

.btn--large {
    padding: 18px 40px;
    font-size: 16px;
}

/* === AUTO-SAVE INDICATOR === */
.brief-saved {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--accent);
    color: var(--bg-primary);
    border-radius: 30px;
    font-weight: 600;
    font-size: 13px;
    box-shadow: 0 4px 20px rgba(124, 252, 0, 0.3);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

.brief-saved.show {
    opacity: 1;
    transform: translateY(0);
}

.brief-saved svg {
    width: 16px;
    height: 16px;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
    .brief-main .brief-container {
        grid-template-columns: 1fr;
    }

    .brief-nav {
        position: static;
        max-height: none;
    }

    .brief-row-2 {
        grid-template-columns: 1fr;
    }

    .brief-section__header {
        padding: 16px 20px;
    }

    .brief-section__body {
        padding: 20px;
    }

    .brief-checkboxes--grid {
        grid-template-columns: 1fr;
    }

    .brief-cards-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .brief-intro {
        padding: 40px 0 30px;
    }

    .brief-section__title {
        font-size: 18px;
    }
}