/* ==========================================================================
   About Mantiq — In-App About / Info Modal
   Triggered from the Help FAB. Student & user-facing overview of the app.
   ========================================================================== */

.about-modal {
    max-width: 720px;
    height: auto;
    max-height: min(85vh, 780px);
}

.about-body {
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
}

/* ---------- Hero ---------- */
.about-hero {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 28px 28px 22px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, var(--accent-light) 0%, transparent 100%);
}

.about-logo {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md, 0 4px 6px -1px rgba(0,0,0,0.1));
    border: 1px solid var(--border);
}

.about-logo img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.about-hero-text h1 {
    font-size: 21px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.about-hero-text .about-tagline {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 2px;
}

/* ---------- Scrollable content ---------- */
.about-scroll {
    padding: 24px 28px 28px;
    overflow-y: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 26px;
}

.about-lede {
    font-size: 14.5px;
    line-height: 1.65;
    color: var(--text-secondary);
}

.about-lede b {
    color: var(--text-primary);
}

/* ---------- Badge row ---------- */
.about-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.about-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.about-badge svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
    color: var(--accent);
}

.about-badge.accent {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.35);
    background-color: var(--accent-light);
}

/* ---------- Section headings ---------- */
.about-section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

/* ---------- Feature grid ---------- */
.about-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.about-feature-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background-color: var(--bg-tertiary);
    transition: var(--transition-fast);
}

.about-feature-card:hover {
    border-color: rgba(var(--accent-rgb), 0.35);
    background-color: var(--accent-light);
}

.about-feature-icon {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-light);
    color: var(--accent);
}

.about-feature-icon svg {
    width: 16px;
    height: 16px;
}

.about-feature-copy h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.about-feature-copy p {
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* ---------- Steps ---------- */
.about-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.about-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.about-step-num {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    border-radius: 50%;
    background-color: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-step-copy {
    font-size: 13px;
    line-height: 1.55;
    color: var(--text-secondary);
    padding-top: 2px;
}

.about-step-copy b {
    color: var(--text-primary);
}

/* ---------- Audience callout ---------- */
.about-callout {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px dashed rgba(var(--accent-rgb), 0.4);
    background-color: var(--accent-light);
}

.about-callout svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--accent);
    margin-top: 1px;
}

.about-callout p {
    font-size: 13px;
    line-height: 1.55;
    color: var(--text-secondary);
}

.about-callout p b {
    color: var(--text-primary);
}

/* ---------- Footer meta ---------- */
.about-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.about-footer-meta {
    font-size: 11.5px;
    color: var(--text-muted);
    line-height: 1.5;
}

.about-footer-meta span {
    color: var(--text-secondary);
    font-weight: 600;
}

.about-footer-links {
    display: flex;
    gap: 8px;
}

.about-footer-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 13px;
    border-radius: 18px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.about-footer-link svg {
    width: 13px;
    height: 13px;
}

.about-footer-link:hover {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.35);
    background-color: var(--accent-light);
}

@media (max-width: 640px) {
    .about-feature-grid {
        grid-template-columns: 1fr;
    }
    .about-hero {
        padding: 22px 20px 18px;
    }
    .about-scroll {
        padding: 20px 20px 24px;
    }
    .about-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ==========================================================================
   Why Mantiq Comparison Modal
   ========================================================================== */
.why-mantiq-modal {
    max-width: 700px;
    height: auto;
    max-height: min(85vh, 760px);
}

.why-mantiq-body {
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.comparison-intro p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.comparison-table-wrap {
    overflow-x: hidden; /* Prevent horizontal scroll on mobile */
    border-radius: 10px;
    border: 1px solid var(--border);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.comparison-table th,
.comparison-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background: var(--bg-tertiary);
    font-weight: 700;
    color: var(--text-primary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table th.mantiq-col {
    color: var(--accent);
    background: var(--accent-light);
}

.comparison-table th.feat-col {
    width: 35%;
}

.comparison-table tbody tr:hover {
    background: rgba(var(--accent-rgb), 0.04);
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table td {
    color: var(--text-secondary);
}

.comparison-table td.check {
    color: var(--success);
    font-weight: 600;
}

.comparison-table td.cross {
    color: var(--error);
    font-weight: 500;
    opacity: 0.7;
}

.comparison-table td.partial {
    color: #f59e0b;
    font-weight: 500;
}

.comparison-table td.mantiq-col,
.comparison-table th.mantiq-col {
    background: var(--accent-light);
}

.comparison-note {
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px dashed rgba(var(--accent-rgb), 0.4);
    background: var(--accent-light);
}

.comparison-note p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Responsive Table */
@media (max-width: 640px) {
    .comparison-table thead {
        display: none;
    }
    .comparison-table, .comparison-table tbody, .comparison-table tr, .comparison-table td {
        display: block;
        width: 100%;
        box-sizing: border-box;
    }
    .comparison-table tr {
        border-bottom: 4px solid var(--bg-secondary);
    }
    .comparison-table tr:last-child {
        border-bottom: none;
    }
    .comparison-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: right;
        border-bottom: 1px solid var(--border);
        padding: 10px 14px;
    }
    .comparison-table td:last-child {
        border-bottom: none;
    }
    .comparison-table td::before {
        content: attr(data-label);
        font-weight: 600;
        text-align: left;
        color: var(--text-primary);
        flex-shrink: 0;
        margin-right: 12px;
    }
    .comparison-table td.feat-cell {
        background: var(--bg-tertiary);
        font-weight: 700;
        color: var(--text-primary);
        justify-content: center;
        text-align: center;
        text-transform: uppercase;
        font-size: 12px;
        letter-spacing: 0.05em;
    }
    .comparison-table td.feat-cell::before {
        display: none;
    }
}

/* ==========================================================================
   Legal Modals (Privacy Policy, Terms of Use)
   ========================================================================== */
.legal-modal {
    max-width: 640px;
    height: auto;
    max-height: min(85vh, 740px);
}

.legal-body {
    padding: 20px 28px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.legal-section h3 {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.legal-section p {
    font-size: 13px;
    line-height: 1.65;
    color: var(--text-secondary);
}

.legal-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.legal-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Contact Modal
   ========================================================================== */
.contact-modal {
    max-width: 560px;
    height: auto;
    max-height: min(85vh, 600px);
}

.contact-body {
    padding: 20px 28px 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
}

.contact-intro {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    text-decoration: none;
    transition: var(--transition-fast);
    cursor: pointer;
}

.contact-card:hover {
    border-color: rgba(var(--accent-rgb), 0.4);
    background: var(--accent-light);
}

.contact-card-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 10px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-card-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-card-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-muted);
}

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

.contact-card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-top: 2px;
}

@media (max-width: 640px) {
    .why-mantiq-body,
    .legal-body,
    .contact-body {
        padding: 16px 18px 22px;
    }
}

/* ==========================================================================
   Circuit Explain Modal
   ========================================================================== */

.circuit-explain-modal {
    max-width: 560px;
    height: auto;
    max-height: min(85vh, 680px);
}

.circuit-explain-body {
    padding: 6px 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
}

.circuit-explain-category {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 18px;
    margin-top: 6px;
    opacity: 0.9;
}

.circuit-explain-section {
    margin-bottom: 20px;
}

.circuit-explain-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.circuit-explain-text {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin: 0;
}

.circuit-explain-expr {
    font-family: 'JetBrains Mono', 'Fira Mono', 'Courier New', monospace;
    font-size: 14px;
    background: var(--bg-input, var(--bg-secondary));
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    color: var(--accent);
    letter-spacing: 0.02em;
    word-break: break-all;
}

.circuit-explain-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.circuit-explain-tag {
    display: inline-block;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    line-height: 1.4;
}

.circuit-explain-funfact {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 4px;
    background: linear-gradient(135deg, var(--accent-light, rgba(99,102,241,0.08)) 0%, transparent 100%);
    border: 1px solid var(--accent-border, rgba(99,102,241,0.2));
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.circuit-explain-funfact svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--accent);
    opacity: 0.8;
}

.circuit-explain-funfact strong {
    color: var(--text-primary);
}

@media (max-width: 640px) {
    .circuit-explain-body {
        padding: 6px 16px 22px;
    }
}