/* ============================================
   ENTANGLEUP - Page-Specific Styles
   Hero, SDK Tools, Dev Utilities, etc.
   ============================================ */

/* ── Hero (Main Landing) ── */
.hero {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-large);
    padding: 48px 56px;
    box-shadow: var(--md-sys-elevation-level1);
    margin-bottom: 40px;
    border: 1px solid var(--md-sys-color-surface-variant);
}

.hero h1 {
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.hero h1 span {
    color: var(--md-sys-color-primary);
}

.hero .sub {
    font-size: 1.1rem;
    color: var(--md-sys-color-on-surface-variant);
    max-width: 720px;
    margin-bottom: 24px;
}

/* ── SDK Tools Page ── */
.sdk-tool-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--md-sys-shape-corner-medium);
    background: rgba(103, 80, 164, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 18px;
    color: var(--md-sys-color-primary);
}

.sdk-tool-icon .material-icons {
    font-size: 28px;
}

/* ── Dev Utilities Page ── */
.overview-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
    align-items: center;
}

@media (max-width: 968px) {
    .overview-split {
        grid-template-columns: 1fr;
    }
}

.overview-text p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.7;
    margin-bottom: 25px;
    font-size: 16px;
}

.stack-feature {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-large);
    padding: 24px;
    box-shadow: var(--md-sys-elevation-level1);
    border: 1px solid var(--md-sys-color-surface-variant);
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

.stack-feature-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.stack-feature-info h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--md-sys-color-on-surface);
}

.stack-feature-info p {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 14px;
    line-height: 1.5;
    margin: 0;
}

/* ── Chart Card (Dev Utilities) ── */
.chart-card {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-large);
    padding: 24px;
    box-shadow: var(--md-sys-elevation-level1);
    border: 1px solid var(--md-sys-color-surface-variant);
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 320px;
}

/* ── Dev Utilities Grid ── */
.dev-utils-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.dev-utils-grid .card .btn {
    display: block;
    text-align: center;
    text-decoration: none;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    padding: 12px 20px;
    border-radius: var(--md-sys-shape-corner-medium);
    font-weight: 600;
    font-size: 14px;
    transition: all .2s ease;
    margin-top: auto;
    border: none;
    cursor: pointer;
}

.dev-utils-grid .card:hover .btn {
    background: #554288;
}

/* ── Section Title ── */
.section-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--md-sys-color-on-surface);
}

/* ── Empty State ── */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 24px;
    color: var(--md-sys-color-on-surface-variant);
}

.empty-state .material-icons {
    font-size: 4rem;
    opacity: 0.5;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

/* ── Responsive Pages ── */
@media (max-width: 768px) {
    .hero {
        padding: 32px 24px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .overview-text h3 {
        font-size: 24px;
    }
    
    .dev-utils-grid {
        grid-template-columns: 1fr;
    }
    
    .stack-feature {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero {
        padding: 24px 16px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .overview-text p {
        font-size: 14px;
    }
}