/* ── Hero Section ───────────────────────────────────────────── */
.hero {
    margin-bottom: 3rem;
}

.hero-text {
    margin-bottom: 2rem;
}

.hero-sub {
    color: var(--on-surface-variant);
    font-size: 1.0625rem;
    line-height: 1.65;
    max-width: 48rem;
}

/* ── Tool Cards ─────────────────────────────────────────────── */
.tool-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.tool-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: 0.75rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, background 0.2s, transform 0.15s;
    cursor: pointer;
}

.tool-card:hover {
    border-color: rgba(255, 204, 0, 0.4);
    background: var(--surface-container);
    transform: translateY(-2px);
    opacity: 1;
}

.tool-card-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.625rem;
    background: rgba(255, 204, 0, 0.1);
    border: 1px solid rgba(255, 204, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tool-card-icon .material-symbols-outlined {
    color: var(--primary);
    font-size: 1.25rem;
    font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}

.tool-card-body {
    flex: 1;
    min-width: 0;
}

.tool-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--on-surface);
    margin-bottom: 0.25rem;
}

.tool-card-desc {
    font-size: 0.8125rem;
    color: var(--on-surface-variant);
    line-height: 1.5;
}

.tool-card-arrow {
    color: var(--on-surface-variant);
    font-size: 1.125rem;
    flex-shrink: 0;
    opacity: 0.4;
    transition: opacity 0.2s, transform 0.2s;
}

.tool-card:hover .tool-card-arrow {
    opacity: 1;
    color: var(--primary);
    transform: translateX(3px);
}

/* Welcome layout extensions */

.welcome-heading {
    font-size: clamp(1rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--on-surface-variant) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.welcome-screen {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.welcome-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 0.5rem;
    max-width: 36rem;
}

.content-grid {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 2rem;
    align-items: start;
}

/* Art + Tanaga share the single-column chat layout */

.art-layout {
    max-width: 900px;
}

.welcome-screen-chat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2.5rem 2rem;
    gap: 0.75rem;
}

.welcome-icon-sm {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: rgba(255, 204, 0, 0.1);
    border: 1px solid rgba(255, 204, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.welcome-icon-sm .material-symbols-outlined {
    color: var(--primary);
    font-size: 1.5rem;
    font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}

.welcome-title-sm {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--primary);
}

.input-row {
    display: flex;
    align-items: flex-end;
    gap: 0.625rem;
}

/* Tablet and mobile ────────────────────────────────────────────────────────── */

@media (max-width: 1023px) {
    .content-grid { grid-template-columns: 1fr; }
    .tool-cards { grid-template-columns: repeat(2, 1fr); }

    .form-panel-wrapper:has(#buildForm[style*="display: none"]) ~ .chat-panel {
        grid-column: 1;
    }

    .welcome-screen {
        flex-direction: column;
        gap: 1rem;
    }

    .welcome-heading {
        max-width: none;
        font-size: 2rem;
    }
}

@media (max-width: 639px) {
    .tool-cards { grid-template-columns: 1fr; }
    .welcome-heading { font-size: 1.75rem; }
}