/* ========================================================================== 
   Modern Portfolio Stylesheet
   - Drop-in replacement for existing HTML structure/classes
   - Responsive layout, polished surfaces, and dark mode via CSS variables
   ========================================================================== */

/* ========================================================================== 
   1) Theme Tokens
   ========================================================================== */
:root {
  color-scheme: light;

  --font-body: "Manrope", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", "Montserrat", var(--font-body);
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --bg: #f3f6fb;
  --bg-alt: #e9eff8;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --surface-muted: #f7faff;
  --surface-inset: #eef3fb;

  --text: #111827;
  --text-soft: #334155;
  --text-muted: #64748b;
  --heading: #061423;

  --brand: #1459cc;
  --brand-strong: #0f4bb0;
  --brand-soft: #e8f0ff;
  --brand-ring: rgba(20, 89, 204, 0.18);

  --accent: #0ea5a5;
  --accent-soft: #dbf7f4;

  --success: #1f8a55;
  --success-soft: #e0f6ea;
  --danger: #c33b4c;
  --danger-soft: #ffe7eb;
  --warning: #b97316;
  --warning-soft: #fff2dc;
  --info: #2563eb;
  --info-soft: #e6efff;

  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.16);
  --line: rgba(15, 23, 42, 0.06);

  --shadow-sm: 0 8px 24px rgba(2, 6, 23, 0.06);
  --shadow-md: 0 18px 40px rgba(2, 6, 23, 0.09);
  --shadow-lg: 0 28px 60px rgba(2, 6, 23, 0.12);

  --radius-sm: 0.6rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.15rem;
  --radius-xl: 1.35rem;
  --radius-pill: 999px;

  --space-1: 0.35rem;
  --space-2: 0.55rem;
  --space-3: 0.8rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.6rem;
  --space-7: 2rem;
  --space-8: 2.6rem;

  --container-width: 1160px;
  --container-padding: 1rem;

  --transition-fast: 140ms ease;
  --transition-base: 220ms ease;
  --transition-slow: 420ms ease;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --bg: #08101d;
    --bg-alt: #0d1728;
    --surface: rgba(15, 23, 42, 0.74);
    --surface-strong: #101a2d;
    --surface-muted: #0d182b;
    --surface-inset: #0a1424;

    --text: #e5edf8;
    --text-soft: #c4d2e8;
    --text-muted: #91a4c2;
    --heading: #f3f7ff;

    --brand: #6ea8ff;
    --brand-strong: #8ab7ff;
    --brand-soft: rgba(110, 168, 255, 0.12);
    --brand-ring: rgba(110, 168, 255, 0.22);

    --accent: #3dd6cc;
    --accent-soft: rgba(61, 214, 204, 0.12);

    --success: #53cf8a;
    --success-soft: rgba(83, 207, 138, 0.14);
    --danger: #ff7a8d;
    --danger-soft: rgba(255, 122, 141, 0.14);
    --warning: #ffc46a;
    --warning-soft: rgba(255, 196, 106, 0.14);
    --info: #87abff;
    --info-soft: rgba(135, 171, 255, 0.14);

    --border: rgba(148, 163, 184, 0.2);
    --border-strong: rgba(148, 163, 184, 0.3);
    --line: rgba(148, 163, 184, 0.13);

    --shadow-sm: 0 10px 26px rgba(1, 4, 10, 0.34);
    --shadow-md: 0 22px 45px rgba(1, 4, 10, 0.42);
    --shadow-lg: 0 34px 70px rgba(1, 4, 10, 0.55);
  }
}

/* Optional manual override support if a theme toggle is added later. */
:root[data-theme="dark"] {
  color-scheme: dark;

  --bg: #08101d;
  --bg-alt: #0d1728;
  --surface: rgba(15, 23, 42, 0.74);
  --surface-strong: #101a2d;
  --surface-muted: #0d182b;
  --surface-inset: #0a1424;

  --text: #e5edf8;
  --text-soft: #c4d2e8;
  --text-muted: #91a4c2;
  --heading: #f3f7ff;

  --brand: #6ea8ff;
  --brand-strong: #8ab7ff;
  --brand-soft: rgba(110, 168, 255, 0.12);
  --brand-ring: rgba(110, 168, 255, 0.22);

  --accent: #3dd6cc;
  --accent-soft: rgba(61, 214, 204, 0.12);

  --success: #53cf8a;
  --success-soft: rgba(83, 207, 138, 0.14);
  --danger: #ff7a8d;
  --danger-soft: rgba(255, 122, 141, 0.14);
  --warning: #ffc46a;
  --warning-soft: rgba(255, 196, 106, 0.14);
  --info: #87abff;
  --info-soft: rgba(135, 171, 255, 0.14);

  --border: rgba(148, 163, 184, 0.2);
  --border-strong: rgba(148, 163, 184, 0.3);
  --line: rgba(148, 163, 184, 0.13);

  --shadow-sm: 0 10px 26px rgba(1, 4, 10, 0.34);
  --shadow-md: 0 22px 45px rgba(1, 4, 10, 0.42);
  --shadow-lg: 0 34px 70px rgba(1, 4, 10, 0.55);
}

/* ========================================================================== 
   2) Base / Reset
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 8% -5%, rgba(20, 89, 204, 0.12), transparent 65%),
    radial-gradient(1000px 520px at 92% 4%, rgba(14, 165, 165, 0.1), transparent 62%),
    linear-gradient(180deg, var(--bg-alt), var(--bg));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.3;
  background-image:
    linear-gradient(to right, transparent 0, transparent calc(100% - 1px), rgba(255, 255, 255, 0.04) calc(100% - 1px)),
    linear-gradient(to bottom, transparent 0, transparent calc(100% - 1px), rgba(255, 255, 255, 0.03) calc(100% - 1px));
  background-size: 32px 32px;
}

main,
.post-shell,
.admin-layout {
  width: 100%;
  flex: 1 0 auto;
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button,
[type="button"],
[type="submit"],
[type="reset"] {
  cursor: pointer;
}

input,
select,
textarea {
  width: 100%;
}

textarea {
  resize: vertical;
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  accent-color: var(--brand);
}

input[type="color"] {
  width: 3rem;
  min-width: 3rem;
  height: 2.35rem;
  padding: 0.15rem;
  border-radius: 0.55rem;
}

input[type="file"] {
  padding: 0.55rem;
}

::selection {
  background: rgba(20, 89, 204, 0.2);
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--brand-ring);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--heading);
}

h1 {
  font-size: clamp(2rem, 3.6vw, 3.45rem);
}

h2 {
  font-size: clamp(1.35rem, 2.2vw, 2rem);
}

h3 {
  font-size: clamp(1.05rem, 1.25vw + 0.8rem, 1.35rem);
}

p {
  margin: 0 0 0.9rem;
  color: var(--text-soft);
}

ul,
ol {
  margin: 0;
  padding-left: 1.15rem;
}

a {
  color: inherit;
  text-decoration-color: rgba(20, 89, 204, 0.35);
  text-underline-offset: 0.18em;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--brand);
  text-decoration-color: currentColor;
}

code,
pre,
kbd,
samp {
  font-family: var(--font-mono);
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1rem 0;
}

.hidden {
  display: none !important;
}

/* ========================================================================== 
   3) Layout Utilities
   ========================================================================== */
.wrap {
  width: min(var(--container-width), calc(100% - (var(--container-padding) * 2)));
  margin-inline: auto;
}

.section {
  margin-block: clamp(1rem, 2vw, 1.6rem);
}

.section + .section {
  margin-top: clamp(1.2rem, 2.8vw, 2rem);
}

.section-title {
  margin-bottom: 0.95rem;
}

.meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.note {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.lead {
  max-width: 68ch;
  font-size: clamp(1rem, 0.4vw + 0.95rem, 1.15rem);
  color: var(--text-soft);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--brand);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 999px;
  background: currentColor;
}

.panel,
.card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.35)) border-box;
  background-color: var(--surface);
  box-shadow: var(--shadow-sm);
}

@supports (backdrop-filter: blur(12px)) {
  .panel,
  .card,
  .nav,
  .hero,
  .hero-home-panel,
  .home-blog-carousel,
  #post-container {
    backdrop-filter: blur(12px) saturate(1.08);
  }
}

.panel {
  padding: clamp(1rem, 2vw, 1.35rem);
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.cards,
.blog-grid,
.home-research-grid,
.research-pubs-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  align-items: start;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.form-grid {
  display: grid;
  gap: 0.9rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  color: var(--heading);
  font-weight: 700;
  font-size: 0.95rem;
}

/* ========================================================================== 
   4) Header + Navigation
   ========================================================================== */
.site-header {
  position: relative;
  padding: 0.95rem 0 0.2rem;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border-radius: calc(var(--radius-xl) + 0.2rem);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-sm);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
  text-decoration: none;
}

.brand:hover {
  color: inherit;
}

.brand-mark {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.7rem;
  padding: 0.35rem;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.brand-text {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--heading);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--heading);
  border-radius: 0.7rem;
  padding: 0.45rem 0.7rem;
  font-weight: 700;
}

.theme-toggle-group {
  margin-left: 0.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.2rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.44);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
  flex-shrink: 0;
}

.theme-toggle-option {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  border-radius: 0.6rem;
  min-height: 2rem;
  padding: 0.34rem 0.58rem;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.theme-toggle-option:hover {
  color: var(--heading);
  background: rgba(255, 255, 255, 0.5);
}

.theme-toggle-option[aria-pressed="true"] {
  background: var(--surface-strong);
  color: var(--heading);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.theme-toggle-option[data-theme-mode="auto"][aria-pressed="true"] {
  border-style: dashed;
}

.theme-toggle-option[data-theme-mode="light"][aria-pressed="true"] {
  background: rgba(14, 165, 165, 0.08);
  color: var(--accent);
  border-color: rgba(14, 165, 165, 0.2);
}

.theme-toggle-option[data-theme-mode="dark"][aria-pressed="true"] {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: rgba(20, 89, 204, 0.22);
}

.menu {
  margin: 0 0 0 auto;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.menu a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  padding: 0.45rem 0.8rem;
  border-radius: 0.7rem;
  text-decoration: none;
  color: var(--text-soft);
  font-weight: 600;
  border: 1px solid transparent;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.menu a:hover {
  color: var(--heading);
  background: var(--surface-strong);
  border-color: var(--border);
}

.menu a.active {
  color: var(--brand);
  background: var(--brand-soft);
  border-color: rgba(20, 89, 204, 0.18);
}

.menu .admin-link {
  border-color: rgba(14, 165, 165, 0.2);
  background: rgba(14, 165, 165, 0.07);
  color: var(--accent);
  color: color-mix(in srgb, var(--accent) 75%, var(--text) 25%);
}

.menu .admin-link:hover,
.menu .admin-link.active {
  border-color: rgba(14, 165, 165, 0.32);
  background: rgba(14, 165, 165, 0.12);
}

/* ========================================================================== 
   5) Hero Sections
   ========================================================================== */
.hero {
  margin-top: 1rem;
  padding: clamp(1rem, 2.6vw, 1.8rem);
  border-radius: calc(var(--radius-xl) + 0.2rem);
  border: 1px solid var(--border);
  background:
    radial-gradient(680px 260px at 0% 0%, rgba(20, 89, 204, 0.08), transparent 72%),
    radial-gradient(640px 240px at 100% 20%, rgba(14, 165, 165, 0.07), transparent 70%),
    rgba(255, 255, 255, 0.62);
  box-shadow: var(--shadow-md);
}

.hero > :last-child {
  margin-bottom: 0;
}

.hero-home {
  padding: clamp(1rem, 2.4vw, 1.6rem);
}

.hero-home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: clamp(1rem, 2vw, 1.35rem);
  align-items: start;
}

.hero-home-copy {
  min-width: 0;
}

.hero-home-copy h1 {
  margin-bottom: 0.8rem;
  max-width: 18ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1rem 0 1.15rem;
}

.hero-home-links-title {
  margin: 0 0 0.6rem;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.9rem;
}

.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.social-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--surface-strong);
  box-shadow: 0 4px 12px rgba(2, 6, 23, 0.04);
  text-decoration: none;
  color: var(--text-soft);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.social-pill:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(2, 6, 23, 0.08);
  border-color: var(--border-strong);
  color: var(--heading);
}

.social-icon {
  width: 1.7rem;
  height: 1.7rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1;
  color: var(--brand);
  background: var(--brand-soft);
  border: 1px solid rgba(20, 89, 204, 0.12);
}

.social-icon svg {
  width: 0.95rem;
  height: 0.95rem;
  display: block;
}

.social-github .social-icon svg {
  width: 1rem;
  height: 1rem;
}

.social-email .social-icon {
  color: #2563eb;
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.14);
}

.social-linkedin .social-icon {
  color: #0a66c2;
  background: rgba(10, 102, 194, 0.1);
  border-color: rgba(10, 102, 194, 0.16);
}

.social-github .social-icon {
  color: var(--heading);
  background: rgba(15, 23, 42, 0.06);
  border-color: rgba(15, 23, 42, 0.08);
}

.social-scholar .social-icon {
  color: #2563eb;
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.16);
}

.social-whatsapp .social-icon {
  color: #16a34a;
  background: rgba(22, 163, 74, 0.12);
  border-color: rgba(22, 163, 74, 0.16);
}

.social-researchgate .social-icon {
  color: #00ccbb;
  background: rgba(0, 204, 187, 0.12);
  border-color: rgba(0, 204, 187, 0.18);
}

.social-website .social-icon {
  color: #0ea5a5;
  background: rgba(14, 165, 165, 0.1);
  border-color: rgba(14, 165, 165, 0.16);
}

.social-label {
  font-size: 0.92rem;
  font-weight: 700;
}

.hero-home-panel {
  position: relative;
  border-radius: calc(var(--radius-xl) + 0.1rem);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(20, 89, 204, 0.04), transparent 25%), var(--surface);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.hero-home-photo-wrap {
  position: relative;
  margin: 0.85rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface-inset);
  overflow: hidden;
}

.hero-home-photo-viewport {
  overflow: hidden;
  border-radius: inherit;
}

.hero-home-photo-track {
  display: flex;
  width: 100%;
  will-change: transform;
}

.hero-home-photo-slide {
  min-width: 100%;
  flex: 0 0 100%;
}

.hero-home-photo {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--surface-inset);
}

.hero-home-photo-controls {
  position: absolute;
  inset: auto 0.65rem 0.65rem auto;
  display: flex;
  gap: 0.4rem;
  z-index: 2;
}

.hero-home-photo-nav {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(3, 7, 18, 0.42);
  color: #fff;
  backdrop-filter: blur(8px);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.hero-home-photo-nav:hover {
  transform: translateY(-1px);
  background: rgba(3, 7, 18, 0.62);
}

.hero-home-photo-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.8rem;
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  z-index: 1;
}

.hero-home-photo-dot {
  width: 0.45rem;
  height: 0.45rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  padding: 0;
  transition: width var(--transition-base), background-color var(--transition-fast);
}

.hero-home-photo-dot.active {
  width: 1.1rem;
  background: #ffffff;
}

.hero-home-panel-body {
  padding: 0.2rem 1rem 1rem;
}

.hero-home-panel-kicker {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
}

.hero-home-panel-body h2 {
  margin-bottom: 0.8rem;
  font-size: clamp(1.15rem, 1vw + 1rem, 1.5rem);
}

.hero-home-stats {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.hero-home-stats li {
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.75rem;
  border-radius: 0.8rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.35);
}

.hero-home-stats strong {
  color: var(--heading);
  font-size: 0.88rem;
}

.hero-home-stats span {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.hero-home-portfolio {
  margin-top: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.8rem;
  border-radius: 0.95rem;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.hero-home-portfolio:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  border-color: var(--border-strong);
}

.hero-home-portfolio-copy {
  min-width: 0;
  display: grid;
  gap: 0.15rem;
}

.hero-home-portfolio-kicker {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-home-portfolio-label {
  color: var(--heading);
  font-weight: 700;
}

.hero-home-portfolio-icon {
  display: grid;
  place-items: center;
  min-width: 2rem;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 800;
}

/* ========================================================================== 
   6) Buttons + Text Links
   ========================================================================== */
.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 0.75rem;
  padding: 0.62rem 0.9rem;
  min-height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    opacity var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--brand);
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand) 92%, white 8%), var(--brand-strong));
  color: #fff;
  border-color: rgba(7, 32, 76, 0.14);
  box-shadow: 0 10px 22px rgba(20, 89, 204, 0.22);
}

.btn-primary:hover {
  color: #fff;
  box-shadow: 0 14px 28px rgba(20, 89, 204, 0.28);
}

.btn-outline {
  background: transparent;
  color: var(--brand);
  border-color: rgba(20, 89, 204, 0.22);
}

.btn-outline:hover {
  background: var(--brand-soft);
  color: var(--brand);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.4);
  color: var(--text-soft);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--surface-strong);
  color: var(--heading);
  border-color: var(--border-strong);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: rgba(195, 59, 76, 0.18);
}

.btn-danger:hover {
  background: rgba(195, 59, 76, 0.14);
  color: var(--danger);
}

.btn-sm {
  min-height: 2rem;
  padding: 0.38rem 0.65rem;
  font-size: 0.86rem;
  border-radius: 0.65rem;
}

.text-link,
.card-link,
.card-title-link {
  font-weight: 700;
  color: var(--brand);
}

.text-link,
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.text-link::after,
.card-link::after {
  content: "->";
  font-size: 0.8em;
  transition: transform var(--transition-fast);
}

.text-link:hover::after,
.card-link:hover::after {
  transform: translateX(2px);
}

.card-title-link {
  text-decoration: none;
}

.card-title-link:hover {
  text-decoration: underline;
}

/* ========================================================================== 
   7) Home / Portfolio Section Components
   ========================================================================== */
.home-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.home-metric {
  padding: 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: var(--shadow-sm);
}

.home-metric-value {
  margin: 0 0 0.35rem;
  color: var(--heading);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: clamp(1.3rem, 2.2vw, 2rem);
}

.home-focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.home-focus-card {
  padding: 0.95rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(20, 89, 204, 0.04), transparent 35%),
    var(--surface-strong);
  box-shadow: var(--shadow-sm);
}

.home-focus-card h3,
.home-capability h3 {
  margin-bottom: 0.45rem;
}

.home-focus-card p:last-child,
.home-capability p:last-child {
  margin-bottom: 0;
}

.home-focus-status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0 0.55rem;
  padding: 0.28rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent);
  color: color-mix(in srgb, var(--accent) 72%, var(--heading) 28%);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.home-focus-status::before {
  content: "";
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 999px;
  background: currentColor;
}

.home-research-card,
.pub {
  position: relative;
}

.home-research-card::before,
.pub::before {
  content: "";
  position: absolute;
  top: 0.95rem;
  left: 0.95rem;
  width: 0.4rem;
  height: 1.8rem;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--brand), var(--accent));
  opacity: 0.9;
}

.home-research-card > :is(h3, p, a),
.pub > :is(h3, p, a) {
  margin-left: 0.65rem;
}

.home-research-card h3,
.research-pubs-list .card h3 {
  font-size: 1.05rem;
}

.research-pubs-list {
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
}

.research-pub-card {
  gap: 0.55rem;
  padding: 0.95rem 1rem;
}

.research-pub-card::before {
  top: 0.95rem;
  left: 0.95rem;
  width: 0.28rem;
  height: 1.35rem;
}

.research-pub-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding-left: 0.7rem;
}

.research-pub-meta {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.research-pub-title {
  margin: 0 0 0 0.7rem;
  max-width: 70ch;
  font-size: clamp(1.02rem, 1vw + 0.85rem, 1.25rem);
}

.research-pub-actions {
  margin-left: 0.7rem;
}

.research-pub-link {
  font-size: 0.95rem;
}

.home-blog-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.home-latest-grid {
  gap: 0.9rem;
}

.home-blog-carousel {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.home-blog-track {
  display: flex;
  transition: transform var(--transition-slow);
  will-change: transform;
}

.home-blog-slide {
  min-width: 100%;
  flex: 0 0 100%;
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  padding: 1rem;
}

.home-blog-slide:hover {
  transform: none;
  box-shadow: none;
}

.home-blog-slide-copy {
  border-radius: calc(var(--radius-lg) - 0.05rem);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 89, 204, 0.03), transparent 45%), var(--surface-strong);
  padding: 1rem;
}

.home-blog-slide-copy h3 {
  margin-bottom: 0.45rem;
}

.home-blog-slide-copy p:last-of-type {
  margin-bottom: 0.75rem;
}

.home-blog-controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 0 1rem 0.7rem;
}

.home-blog-dots {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  padding: 0 1rem 1rem;
}

.home-blog-dots button {
  width: 0.5rem;
  height: 0.5rem;
  border: 0;
  border-radius: 999px;
  background: rgba(100, 116, 139, 0.35);
  padding: 0;
  transition: transform var(--transition-fast), width var(--transition-base), background-color var(--transition-fast);
}

.home-blog-dots button.active {
  width: 1.15rem;
  background: var(--brand);
}

.home-capabilities {
  display: grid;
  gap: 0.75rem;
}

.home-capability {
  padding: 0.85rem 0.95rem;
  border-radius: 0.95rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.4);
}

.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-grid span,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(20, 89, 204, 0.16);
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.82rem;
  font-weight: 700;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.profile-linked-content {
  margin-bottom: 0.95rem;
}

/* ========================================================================== 
   8) Card / Blog / Post Listing Details
   ========================================================================== */
.card > :last-child {
  margin-bottom: 0;
}

.card h3 {
  margin-bottom: 0.25rem;
}

.blog-card-cover {
  margin: -1rem -1rem 0.1rem;
  overflow: hidden;
  border-radius: calc(var(--radius-xl) - 2px) calc(var(--radius-xl) - 2px) 0.9rem 0.9rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface-inset);
}

.blog-card-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transform: scale(1.001);
  transition: transform var(--transition-slow);
}

.card:hover .blog-card-cover img {
  transform: scale(1.02);
}

.post-empty {
  display: grid;
  gap: 0.7rem;
  justify-items: start;
  padding: 1.1rem;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-strong);
  background: rgba(255, 255, 255, 0.32);
}

.post-empty h2,
.post-empty p {
  margin: 0;
}

/* ========================================================================== 
   9) Forms, Inputs, Search, and Alerts
   ========================================================================== */
input,
select,
textarea {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface-strong);
  color: var(--text);
  padding: 0.65rem 0.75rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(20, 89, 204, 0.35);
  box-shadow: 0 0 0 4px var(--brand-ring);
}

.search-bar {
  display: grid;
  gap: 0.7rem;
}

.blog-search-bar {
  grid-template-columns: minmax(240px, 1.6fr) repeat(3, minmax(130px, 1fr)) auto;
  align-items: center;
}

.blog-search-bar .btn {
  white-space: nowrap;
}

.alert {
  border-radius: 0.85rem;
  border: 1px solid var(--border);
  padding: 0.7rem 0.85rem;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--surface-strong);
}

.alert.info {
  border-color: rgba(37, 99, 235, 0.18);
  background: var(--info-soft);
  color: var(--info);
  color: color-mix(in srgb, var(--info) 76%, var(--heading) 24%);
}

.alert.success {
  border-color: rgba(31, 138, 85, 0.2);
  background: var(--success-soft);
  color: var(--success);
  color: color-mix(in srgb, var(--success) 78%, var(--heading) 22%);
}

.alert.error {
  border-color: rgba(195, 59, 76, 0.2);
  background: var(--danger-soft);
  color: var(--danger);
  color: color-mix(in srgb, var(--danger) 78%, var(--heading) 22%);
}

/* ========================================================================== 
   10) Rich Text / Markdown (CMS content, blog post content, preview)
   ========================================================================== */
:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) {
  color: var(--text-soft);
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) > :first-child {
  margin-top: 0;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) > :last-child {
  margin-bottom: 0;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) :where(p, ul, ol, blockquote, pre, hr) {
  margin: 0 0 0.9rem;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) :where(h1, h2, h3, h4) {
  margin: 1.1rem 0 0.55rem;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) h1 {
  font-size: clamp(1.35rem, 1.8vw, 1.9rem);
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) h2 {
  font-size: clamp(1.15rem, 1.5vw, 1.5rem);
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) h3 {
  font-size: clamp(1.02rem, 1vw, 1.2rem);
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) :where(ul, ol) {
  padding-left: 1.15rem;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) li + li {
  margin-top: 0.35rem;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) a {
  color: var(--brand);
  font-weight: 600;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: 0.7rem 0.9rem;
  border-left: 3px solid var(--brand);
  border-radius: 0 0.85rem 0.85rem 0;
  background: var(--brand-soft);
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) :not(pre) > code {
  padding: 0.15rem 0.38rem;
  border-radius: 0.4rem;
  border: 1px solid var(--line);
  background: rgba(148, 163, 184, 0.12);
  color: var(--heading);
  font-size: 0.92em;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) pre {
  padding: 0.75rem 0.85rem;
  overflow: auto;
  border-radius: 0.85rem;
  border: 1px solid rgba(148, 163, 184, 0.15);
  background: #0a1220;
  color: #dbe7fb;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) pre code {
  color: inherit;
  background: transparent;
  border: 0;
  padding: 0;
}

:where(.post-content, [data-cms-render="markdown"], .profile-linked-content, #content-preview) img {
  width: 100%;
  height: auto;
  border-radius: 0.9rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* Footer CMS markdown text should stay compact. */
.footer-contact-content {
  color: var(--text-muted);
  font-size: 0.93rem;
}

.footer-contact-content p {
  margin: 0;
}

/* ========================================================================== 
   11) Blog Post Page / Single Post UI
   ========================================================================== */
.post-shell {
  width: min(900px, calc(100% - 2rem));
  margin-inline: auto;
}

.post-shell .section {
  margin-block: 1rem 1.25rem;
}

#post-container {
  display: grid;
  gap: 1rem;
  padding: clamp(1rem, 2vw, 1.4rem);
  border-radius: calc(var(--radius-xl) + 0.2rem);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.post-header {
  display: grid;
  gap: 0.55rem;
}

.post-header .meta {
  font-weight: 600;
}

.post-header h1 {
  margin: 0;
  font-size: clamp(1.65rem, 2.6vw, 2.5rem);
}

.post-header .lead {
  margin: 0;
  max-width: 68ch;
}

.post-content {
  color: var(--text-soft);
  font-size: 1rem;
  line-height: 1.75;
}

.image-frame {
  border-radius: 0.95rem;
  border: 1px solid var(--border);
  background: var(--surface-inset);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.image-frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.post-cover-slider {
  position: relative;
  border-radius: 1rem;
  border: 1px solid var(--border);
  background: var(--surface-inset);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.post-cover-track {
  display: flex;
  transition: transform var(--transition-slow);
  will-change: transform;
}

.post-cover-slide {
  flex: 0 0 100%;
  min-width: 100%;
}

.post-cover-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.post-cover-nav {
  position: absolute;
  inset: auto 0 0.75rem 0;
  display: flex;
  justify-content: space-between;
  padding-inline: 0.75rem;
  pointer-events: none;
}

.post-cover-nav button {
  pointer-events: auto;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(3, 7, 18, 0.45);
  color: #fff;
  display: grid;
  place-items: center;
  padding: 0;
  line-height: 1;
  backdrop-filter: blur(8px);
}

.post-cover-nav button:hover {
  background: rgba(3, 7, 18, 0.65);
}

.post-cover-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.85rem;
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  pointer-events: none;
}

.post-cover-dots button {
  pointer-events: auto;
  width: 0.48rem;
  height: 0.48rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.52);
  padding: 0;
  transition: width var(--transition-base), background-color var(--transition-fast);
}

.post-cover-dots button.active {
  width: 1.1rem;
  background: #fff;
}

/* ========================================================================== 
   12) Search / Blog / Contact / General Public Pages
   ========================================================================== */
.blog-grid .card,
.research-pubs-list .card,
.home-research-grid .card {
  min-height: 100%;
}

.post-empty.hidden {
  display: none !important;
}

#blog-status {
  margin-top: 0.7rem;
}

/* ========================================================================== 
   13) Admin Dashboard / CMS Tools
   ========================================================================== */
.admin-layout {
  width: min(1320px, calc(100% - 2rem));
  margin-inline: auto;
}

.admin-layout .section {
  margin-top: 1rem;
}

.dashboard-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.85rem;
  align-items: flex-start;
}

.manager-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.95rem;
  padding: 0.35rem;
  border-radius: 0.95rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.32);
}

.manager-tab {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-soft);
  border-radius: 0.75rem;
  padding: 0.55rem 0.8rem;
  font-weight: 700;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.manager-tab:hover {
  color: var(--heading);
  background: rgba(255, 255, 255, 0.4);
}

.manager-tab.active,
.manager-tab[aria-selected="true"] {
  color: var(--brand);
  background: var(--brand-soft);
  border-color: rgba(20, 89, 204, 0.18);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: 1rem;
  align-items: start;
}

.cms-manager-grid {
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
}

.dashboard-grid > .panel {
  background: var(--surface-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), var(--shadow-sm);
}

.posts-list,
.cms-list {
  display: grid;
  gap: 0.75rem;
}

.post-row {
  display: grid;
  gap: 0.45rem;
  padding: 0.85rem;
  border-radius: 0.95rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.35);
}

.post-row h3 {
  margin: 0;
  font-size: 1rem;
}

.post-row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.2rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 0.22rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid transparent;
  white-space: nowrap;
}

.status-published {
  background: var(--success-soft);
  color: var(--success);
  color: color-mix(in srgb, var(--success) 78%, var(--heading) 22%);
  border-color: rgba(31, 138, 85, 0.16);
}

.status-draft {
  background: var(--warning-soft);
  color: var(--warning);
  color: color-mix(in srgb, var(--warning) 80%, var(--heading) 20%);
  border-color: rgba(185, 115, 22, 0.16);
}

.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.55rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--surface-muted);
}

.editor-toolbar .btn {
  flex: 0 0 auto;
}

.editor-preview {
  min-height: 22rem;
  border-radius: 0.95rem;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  padding: 0.95rem;
  overflow: auto;
}

.editor-preview-side {
  position: sticky;
  top: 1rem;
}

.editor-preview #content-preview > *:last-child {
  margin-bottom: 0;
}

.image-frame img {
  max-height: 420px;
}

.cover-url-list {
  display: grid;
  gap: 0.7rem;
}

.cover-url-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem;
  border-radius: 0.9rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.45);
  box-shadow: var(--shadow-sm);
}

.cover-url-item[draggable="true"] {
  cursor: grab;
}

.cover-url-item[draggable="true"]:active {
  cursor: grabbing;
}

.cover-url-item img {
  width: 92px;
  height: 64px;
  object-fit: cover;
  border-radius: 0.65rem;
  border: 1px solid var(--line);
  background: var(--surface-inset);
}

.cover-url-body {
  display: grid;
  gap: 0.35rem;
  min-width: 0;
}

.cover-url-text {
  margin: 0;
  font-size: 0.86rem;
  color: var(--text-soft);
  word-break: break-all;
}

.cover-url-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.cms-list .post-row {
  gap: 0.35rem;
}

/* ========================================================================== 
   14) Footer
   ========================================================================== */
.footer {
  margin-top: auto;
  padding: 1.1rem 0 1.6rem;
}

.footer .wrap {
  border-top: 1px solid var(--line);
  padding-top: 0.95rem;
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem 1rem;
}

.footer-copy {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.contact-whatsapp-link,
.footer-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: #0f8f6f;
  border: 1px solid rgba(37, 211, 102, 0.18);
  background: rgba(37, 211, 102, 0.08);
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.contact-whatsapp-link {
  margin-top: 0.85rem;
  padding: 0.55rem 0.75rem;
  border-radius: 0.8rem;
  font-weight: 700;
}

.footer-whatsapp {
  padding: 0.35rem 0.6rem;
  border-radius: 0.7rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.contact-whatsapp-link:hover,
.footer-whatsapp:hover {
  color: #0a7b5f;
  background: rgba(37, 211, 102, 0.12);
  border-color: rgba(37, 211, 102, 0.28);
  transform: translateY(-1px);
}

.contact-whatsapp-icon,
.footer-whatsapp-icon {
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: #16a34a;
  background: rgba(22, 163, 74, 0.12);
  border: 1px solid rgba(22, 163, 74, 0.14);
  flex-shrink: 0;
}

.contact-whatsapp-icon svg,
.footer-whatsapp-icon svg {
  width: 0.9rem;
  height: 0.9rem;
  display: block;
}

/* ========================================================================== 
   15) Motion / Reveal Utilities
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 460ms ease, transform 520ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.visible {
  opacity: 1;
}

/* ========================================================================== 
   16) Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1180px) {
  .home-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-search-bar {
    grid-template-columns: minmax(220px, 1fr) repeat(2, minmax(130px, 1fr));
  }

  .blog-search-bar select:last-of-type,
  .blog-search-bar .btn {
    grid-column: span 1;
  }
}

@media (max-width: 1080px) {
  .hero-home-grid {
    grid-template-columns: 1fr;
  }

  .hero-home-panel {
    max-width: 720px;
  }

  .dashboard-grid,
  .cms-manager-grid {
    grid-template-columns: 1fr;
  }

  .editor-preview-side {
    position: static;
  }
}

@media (max-width: 920px) {
  .split {
    grid-template-columns: 1fr;
  }

  .blog-search-bar {
    grid-template-columns: 1fr 1fr;
  }

  .blog-search-bar > :first-child {
    grid-column: 1 / -1;
  }

  .home-blog-controls {
    justify-content: space-between;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding-top: 0.75rem;
  }

  .nav {
    flex-wrap: wrap;
    padding: 0.6rem 0.7rem;
  }

  .brand-text {
    max-width: 11.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .theme-toggle-group {
    margin-left: 0;
    margin-top: 0.35rem;
    order: 3;
  }

  .menu {
    position: absolute;
    top: calc(100% + 0.45rem);
    left: 0;
    right: 0;
    margin: 0;
    padding: 0.5rem;
    display: none;
    grid-template-columns: 1fr;
    gap: 0.35rem;
    border-radius: 0.95rem;
    border: 1px solid var(--border);
    background: var(--surface-strong);
    box-shadow: var(--shadow-lg);
    z-index: 20;
  }

  .menu.open {
    display: grid;
  }

  .menu li {
    display: block;
  }

  .menu a {
    justify-content: flex-start;
    width: 100%;
  }

  .hero {
    margin-top: 0.85rem;
    padding: 0.95rem;
  }

  .hero-home-panel-body {
    padding: 0.2rem 0.85rem 0.9rem;
  }

  .hero-actions .btn {
    flex: 1 1 calc(50% - 0.65rem);
  }

  .home-metrics {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .cards,
  .blog-grid,
  .home-research-grid,
  .research-pubs-list,
  .home-focus-grid {
    grid-template-columns: 1fr;
  }

  .two-col,
  .three-col {
    grid-template-columns: 1fr;
  }

  .post-shell {
    width: calc(100% - 1rem);
  }

  #post-container {
    padding: 0.9rem;
  }

  .post-cover-nav {
    padding-inline: 0.5rem;
  }

  .cover-url-item {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .cover-url-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 560px) {
  :root {
    --container-padding: 0.75rem;
  }

  .hero-home-copy h1,
  .hero h1 {
    max-width: none;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .social-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .theme-toggle-group {
    width: 100%;
    justify-content: stretch;
  }

  .theme-toggle-option {
    flex: 1 1 0;
    text-align: center;
  }

  .social-pill {
    width: 100%;
    justify-content: flex-start;
  }

  .blog-search-bar {
    grid-template-columns: 1fr;
  }

  .blog-search-bar > * {
    grid-column: auto;
  }

  .home-blog-controls {
    flex-wrap: wrap;
    padding-bottom: 0.55rem;
  }

  .home-blog-controls .btn {
    flex: 1 1 calc(50% - 0.5rem);
  }

  .footer-bar {
    align-items: flex-start;
  }

  .post-row-actions .btn,
  .form-actions .btn {
    flex: 1 1 auto;
  }
}

/* ========================================================================== 
   17) Reduced Motion Preference
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}