/* ============================================================
   AURISUS — research.css (page-specific)
   ============================================================ */

/* Page Header */
.page-header {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: flex-end;
    padding-bottom: var(--space-6);
    overflow: hidden;
    isolation: isolate;
    border-bottom: 1px solid color-mix(in srgb, var(--silver) 15%, transparent);
}

.page-header-content {
    position: relative;
    z-index: 2;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--gutter);
    width: 100%;
}

.page-title {
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.0;
    letter-spacing: -0.02em;
    color: var(--ivory);
    margin: 0 0 var(--space-3);
}

.page-sub {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--silver);
    max-width: 48ch;
    margin: 0;
    line-height: 1.5;
}

/* --- Page-Specific Background: Scientific Grid --- */
.inner-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.grid-svg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150vw;
    height: 150vw;
    min-width: 800px;
    min-height: 800px;
    transform: translate(-50%, -50%);
    opacity: 0.4;
}

.grid-lines {
    transform-origin: 400px 400px;
    animation: spinGrid 120s linear infinite;
}

.data-node {
    animation: pulseNode 4s ease-in-out infinite alternate;
}
.data-node:nth-child(even) {
    animation-delay: 2s;
}

.data-line {
    stroke-dasharray: 10 20;
    animation: dashFlow 20s linear infinite;
}

@keyframes spinGrid {
    100% { transform: rotate(360deg); }
}

@keyframes pulseNode {
    0% { opacity: 0.3; r: 1.5; }
    100% { opacity: 1; r: 3; }
}

@keyframes dashFlow {
    100% { stroke-dashoffset: -1000; }
}

/* Intro Section */
.intro-section {
    padding-top: var(--space-7);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid color-mix(in srgb, var(--silver) 10%, transparent);
}

.intro-section .lead {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    color: var(--ivory);
    font-weight: 500;
    max-width: 40ch;
    line-height: 1.3;
    margin-bottom: var(--space-4);
}

.intro-section p {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    max-width: 68ch;
    margin-bottom: var(--space-3);
}

/* Research Areas */
.research-areas {
    display: flex;
    flex-direction: column;
    gap: var(--space-7);
    padding-top: var(--space-7);
    padding-bottom: var(--space-7);
}

.research-item {
    border-top: 1px solid color-mix(in srgb, var(--silver) 15%, transparent);
    padding-top: var(--space-5);
}

.research-item:first-of-type {
    border-top: none;
    padding-top: 0;
}

.research-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--ivory);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.research-tagline {
    color: var(--ivory);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 500;
    margin-bottom: var(--space-4);
    max-width: 50ch;
}

.research-item p {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    max-width: 68ch;
    margin-bottom: var(--space-3);
}

/* Conclusion / Approach Section */
.conclusion-section {
    padding-bottom: var(--space-8);
    border-top: 1px solid color-mix(in srgb, var(--silver) 10%, transparent);
    padding-top: var(--space-7);
}

.conclusion-section .section-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    color: var(--ivory);
    margin-bottom: var(--space-5);
    font-weight: 600;
}

.conclusion-section .lead {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    color: var(--ivory);
    font-weight: 500;
    max-width: 40ch;
    line-height: 1.3;
    margin-bottom: var(--space-4);
}

.conclusion-section p {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    max-width: 68ch;
    margin-bottom: var(--space-3);
}