/* materialDesign 3 - Premium Runway Expansion */
:root {
    --m3-surface: #ffffff;
    --m3-surface-variant: #e1e2ec;
    --m3-primary: #2563eb;
    --m3-on-primary: #ffffff;
    --m3-primary-container: #d9e2ff;
    --m3-on-primary-container: #001945;
    --m3-secondary-container: #e0e2ec;
    --m3-on-secondary-container: #191c20;
    --m3-outline: #74777f;
    --m3-outline-variant: #c4c6cf;

    --m3-radius-xl: 36px;
    --m3-radius-lg: 28px;
    --m3-radius-md: 20px;
    --m3-radius-sm: 16px;

    /* Elevation - Standard MD3 tokens */
    --m3-elev-1: 0 1px 3px 1px rgba(0, 0, 0, 0.15), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --m3-elev-2: 0 2px 6px 2px rgba(0, 0, 0, 0.15), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --m3-elev-3: 0 4px 8px 3px rgba(0, 0, 0, 0.15), 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --m3-elev-4: 0 6px 10px 4px rgba(0, 0, 0, 0.15), 0 2px 3px 0 rgba(0, 0, 0, 0.3);
}

/* Base Body Adjustments */
body {
    background-color: #f1f3f6;
    /* Light grey for better card contrast */
    color: #1b1b1f;
}

/* Material 3 Card - Premium Version */
.m3-card {
    background: var(--m3-surface);
    border-radius: 36px !important;
    padding: clamp(2.5rem, 10vw, 5rem);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1),
        box-shadow 0.4s cubic-bezier(0.2, 0, 0, 1);
    border: 1px solid var(--m3-outline-variant);
    display: block;
    text-decoration: none;
    color: inherit;
    position: relative;
    margin: 6rem 0;
}

.m3-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
    border-color: var(--m3-primary);
}

.m3-card__header {
    margin-bottom: 1rem;
}

.m3-card__title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    color: #1b1b1f;
    line-height: 1.25;
    /* Fixed clipping */
    margin: 0;
    letter-spacing: -0.01em;
}

.m3-card__summary {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: #44474e;
    line-height: 1.6;
    margin: 0;
}

.m3-card__cta {
    margin-top: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--m3-primary);
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: var(--m3-primary-container);
    transition: all 0.2s ease;
}

.m3-card:hover .m3-card__cta {
    background: var(--m3-primary);
    color: white;
}

/* Material 3 Hero Improvements */
.hero-card {
    text-align: center;
    padding: 4rem 1rem;
    border: none;
    box-shadow: none;
    background: transparent;
    margin-bottom: 2rem;
}

.hero-avatar {
    border-radius: 28% 72% 64% 36% / 41% 41% 59% 59%;
    /* Modern organic shape instead of plain circle */
    box-shadow: var(--m3-elev-3);
    margin-bottom: 2rem;
    border: 8px solid #fff;
    width: clamp(180px, 25vw, 240px);
    height: clamp(180px, 25vw, 240px);
    object-fit: cover;
    transition: all 0.5s ease;
    animation: blobify 12s infinite alternate;
}

@keyframes blobify {
    0% {
        border-radius: 28% 72% 64% 36% / 41% 41% 59% 59%;
    }

    50% {
        border-radius: 41% 59% 41% 59% / 64% 36% 64% 36%;
    }

    100% {
        border-radius: 64% 36% 28% 72% / 36% 64% 36% 64%;
    }
}

.hero-name {
    font-size: clamp(2.25rem, 6vw, 3.5rem);
    font-weight: 800;
    color: #1b1b1f;
    margin-bottom: 0.75rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.hero-role {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: #44474e;
    margin-bottom: 2rem;
    font-weight: 500;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.4;
}

.hero-links .link-arrow {
    background: var(--m3-primary-container);
    color: var(--m3-on-primary-container) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}

.hero-links .link-arrow:hover {
    background: var(--m3-primary);
    color: white !important;
    transform: scale(1.05) translateY(-2px);
    box-shadow: var(--m3-elev-2);
}

/* Data Bytes Grid Refinement */
.data-bytes-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    margin-top: 1.5rem;
}

.m3-byte-card {
    background: var(--m3-surface);
    border-radius: 28px !important;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.2, 0, 0, 1);
    display: flex;
    flex-direction: column;
    text-decoration: none !important;
}

.m3-byte-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    border-color: #c5e1a5 !important;
}

.m3-byte-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
    color: #000000 !important;
    line-height: 1.2;
}

.m3-byte-card__subtitle {
    display: inline-block;
    background: #c5e1a5;
    color: #1b1b1f;
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    width: fit-content;
}

.m3-byte-card__summary {
    font-size: 0.95rem;
    color: #1b1b1f !important;
    /* Black/Dark */
    line-height: 1.5;
    margin-bottom: 1.25rem;
    opacity: 0.9;
}

.m3-byte-card__meta {
    font-size: 0.85rem;
    color: #44474e !important;
    /* Dark Gray */
    margin-top: auto;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* Dataset Page Improvements */
.dataset-item {
    background: var(--m3-surface);
    border-radius: var(--m3-radius-lg);
    padding: 2rem;
    box-shadow: var(--m3-elev-1);
    border: 1px solid var(--m3-outline-variant);
    margin-bottom: 1.5rem;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}

.dataset-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--m3-elev-3);
    border-color: var(--m3-primary);
}

.dataset-item__title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* MD3 Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--m3-radius-md);
    font-family: var(--font-display);
    font-weight: 600;
    transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
    cursor: pointer;
    border: none;
    background: var(--m3-primary);
    color: white !important;
    box-shadow: var(--m3-elev-1);
    min-height: 48px;
    text-decoration: none;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--m3-elev-2);
    background: #1d4ed8;
    /* Slightly darker primary */
}

.button--secondary {
    background: var(--m3-secondary-container);
    color: var(--m3-on-secondary-container) !important;
    box-shadow: none;
}

.button--secondary:hover {
    background: var(--m3-outline-variant);
    box-shadow: var(--m3-elev-1);
}

.button--ghost {
    background: transparent;
    color: var(--m3-primary) !important;
    box-shadow: none;
}

.button--ghost:hover {
    background: var(--m3-primary-container);
}

/* MD3 Styled Inputs */
.dataset-filter {
    background: var(--m3-secondary-container);
    padding: 2.5rem;
    border-radius: var(--m3-radius-xl);
    margin-bottom: 3.5rem;
    display: grid;
    gap: 1.5rem;
    border: 1px solid var(--m3-outline-variant);
}

.dataset-filter__row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.5rem;
    align-items: flex-end;
}

@media (max-width: 600px) {
    .dataset-filter__row {
        grid-template-columns: 1fr;
    }
}

.dataset-filter label {
    display: block;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--m3-on-secondary-container);
    opacity: 0.7;
    letter-spacing: 0.05em;
}

.dataset-filter input,
.dataset-select {
    width: 100%;
    background: #ffffff;
    border: 2px solid transparent;
    border-radius: var(--m3-radius-md);
    padding: 1.1rem 1.4rem;
    font-size: 1.05rem;
    transition: all 0.2s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.dataset-filter input:focus,
.dataset-select:focus {
    outline: none;
    border-color: var(--m3-primary);
    box-shadow: 0 0 0 4px var(--m3-primary-container);
}

/* Pills & Chips */
.pill {
    background: var(--m3-secondary-container);
    color: var(--m3-on-secondary-container);
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.pill--type {
    background: var(--m3-primary-container);
    color: var(--m3-on-primary-container);
}

.dataset-item__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

/* Header & Nav Layout */
.site-header {
    padding: 1.25rem 0;
    backdrop-filter: blur(16px) saturate(180%);
    background: #f1f3f6 !important;
    border-bottom: 1px solid var(--m3-outline-variant);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 100%;
}

.nav-link {
    font-weight: 600;
    padding: 0.75rem 1.5rem !important;
    border-radius: 100px !important;
    color: #1b1b1f !important;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}

.nav-link:hover {
    background: var(--m3-primary-container) !important;
    color: var(--m3-primary) !important;
}

.nav-links {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

@media (max-width: 640px) {
    .site-nav {
        justify-content: center;
    }
}