:root {
  --font-family-base: "Inter", "Segoe UI", Roboto, sans-serif;
  --font-family-heading: "Poppins", "Segoe UI", Roboto, sans-serif;
  --font-size-base: clamp(1rem, 0.95rem + 0.3vw, 1.0625rem);
  --font-size-large: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem);
  --font-size-xlarge: clamp(2rem, 1.6rem + 1.6vw, 3rem);
  --layout-max-width: 68.75rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-s: 0.75rem;
  --space-m: 1rem;
  --space-l: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --radius-s: 0.5rem;
  --radius-m: 0.75rem;
  --radius-l: 1.25rem;
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.4);
  --transition-base: 150ms ease-in-out;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.65;
}

main {
  flex: 1 0 auto;
  padding-block: var(--space-xl);
}

main:where(:not(.article-container)) > * + * {
  margin-top: var(--space-2xl);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  color: var(--color-text);
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: var(--font-size-xlarge);
}

h2 {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
}

p,
ul,
ol {
  margin: 0;
  color: var(--color-muted);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base), opacity var(--transition-base);
}

a:hover,
a:focus {
  color: var(--color-accent);
}

img,
video,
iframe {
  display: block;
  max-width: 100%;
  height: auto;
}

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

fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.layout-container {
  width: min(100%, var(--layout-max-width));
  margin-inline: auto;
  padding-inline: var(--space-l);
}

.page-section {
  padding-block: var(--space-xl);
}

.stack > * + * {
  margin-top: var(--stack-gap, var(--space-l));
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--cluster-gap, var(--space-m));
}

.cluster--justify-center {
  justify-content: center;
}

.cluster--justify-space-between {
  justify-content: space-between;
}

.grid {
  display: grid;
  gap: var(--grid-gap, var(--space-l));
  grid-template-columns: repeat(auto-fit, minmax(var(--grid-min, 16rem), 1fr));
}

.grid--cols-2 {
  --grid-min: 20rem;
}

.grid--cols-3 {
  --grid-min: 18rem;
}

.grid--cols-4 {
  --grid-min: 14rem;
}

.grid--align-center {
  align-items: center;
}

.form {
  display: grid;
  gap: var(--space-l);
}

.form-field {
  display: grid;
  gap: var(--space-xs);
}

.form-field--inline {
  align-items: center;
  grid-template-columns: auto 1fr;
  gap: var(--space-s);
}

.form-field--checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-s);
}

.form-label {
  font-weight: 600;
  color: var(--color-text);
}

.form-label--checkbox {
  font-weight: 500;
  color: var(--color-muted);
}

.form-hint {
  color: var(--color-muted);
  font-size: 0.95em;
}

.form-error {
  color: var(--color-error);
  font-weight: 600;
  font-size: 0.95em;
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-s);
  border: 1px solid var(--color-border);
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--color-text);
  font-size: clamp(1rem, 0.98rem + 0.2vw, 1.05rem);
  line-height: 1.5;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.25);
  background-color: rgba(255, 255, 255, 0.08);
  outline: none;
}

.input:disabled,
.textarea:disabled,
.select:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.textarea {
  min-height: 8rem;
  resize: vertical;
}

.input.is-error,
.textarea.is-error,
.select.is-error,
.form-field[data-state="error"] .input,
.form-field[data-state="error"] .textarea,
.form-field[data-state="error"] .select,
.input:invalid,
.textarea:invalid,
.select:invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 2px rgba(255, 107, 107, 0.2);
}

.form-field[data-state="error"] .form-label,
.form-field[data-state="error"] .form-label--checkbox {
  color: var(--color-error);
}

.checkbox {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
  border-radius: 0.35rem;
  border: 1px solid var(--color-border);
  background-color: rgba(255, 255, 255, 0.04);
  display: grid;
  place-content: center;
  transition: border-color var(--transition-base), background-color var(--transition-base), box-shadow var(--transition-base);
  appearance: none;
}

.checkbox::after {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 0.2rem;
  transform: scale(0);
  transition: transform var(--transition-base) ease-out;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-strong));
}

.checkbox:hover {
  border-color: var(--color-accent);
}

.checkbox:checked::after {
  transform: scale(1);
}

.checkbox:checked {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.checkbox:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.25);
  outline: none;
}

.checkbox:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.checkbox:disabled::after {
  background: var(--color-muted);
}

.custom-button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-s);
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: 2px solid transparent;
  background: linear-gradient(var(--color-background), var(--color-background)) padding-box,
    linear-gradient(135deg, rgba(255, 255, 255, 0.4), rgba(var(--color-accent-rgb), 0.6)) border-box;
  color: var(--color-text);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
  text-align: center;
}

.custom-button:hover,
.custom-button:focus-visible,
.button:hover,
.button:focus-visible {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(var(--color-accent-rgb), 0.75));
  color: var(--color-text);
  transform: translateY(-1px);
}

.custom-button--primary,
.button--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-strong));
  border-color: transparent;
  color: #fff;
}

.custom-button--primary:hover,
.custom-button--primary:focus-visible,
.button--primary:hover,
.button--primary:focus-visible {
  background: linear-gradient(135deg, #fff, var(--color-accent-strong));
  color: var(--color-background);
}

.custom-button img,
.button img {
  width: 1.5rem;
  height: 1.5rem;
  object-fit: contain;
}

@media (max-width: 50rem) {
  .form {
    gap: var(--space-m);
  }

  .form-field {
    gap: var(--space-2xs);
  }

  .form-field--checkbox {
    gap: var(--space-xs);
  }
}

.home-section {
  display: grid;
  gap: var(--space-2xl);
}

.home-title {
  text-align: center;
  font-weight: 700;
}

.home-title span {
  white-space: nowrap;
}

.video-wrapper {
  position: relative;
  padding-top: 56.25%;
  border-radius: var(--radius-l);
  overflow: hidden;
  background-color: #000;
  box-shadow: var(--shadow-soft);
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-grid {
  --grid-gap: var(--space-l);
  --grid-min: 18rem;
}

.featured-video {
  max-width: 60rem;
  margin-inline: auto;
}

.latest-videos-title {
  text-align: center;
  font-weight: 600;
}

.about-section,
.contact-section,
.podcast-section,
.events-section,
.thanks-section,
.home-section {
  padding-block: var(--space-xl);
}

.about-content,
.contact-card,
.thanks-card,
.generic-card {
  background: none;
  border-radius: 0;
  padding: 0;
  border: none;
  box-shadow: none;
}

.about-content,
.generic-card {
  max-width: 58rem;
  margin-inline: auto;
}

.contact-card {
  width: min(100%, 42rem);
  margin-inline: auto;
}

.thanks-card {
  text-align: center;
  width: min(100%, 32rem);
  margin-inline: auto;
  display: grid;
  gap: var(--space-m);
  justify-items: center;
}

.podcast-card,
.events-card {
  padding: clamp(var(--space-l), 3vw, var(--space-xl));
  border-radius: var(--radius-m);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: grid;
  gap: var(--space-l);
}

.about-content p,
.thanks-card p,
.contact-section p,
.events-section p,
.podcast-section p,
.generic-card p {
  color: var(--color-muted);
}

.text-center {
  text-align: center;
}

.podcast-buttons {
  --cluster-gap: var(--space-s);
  flex-wrap: wrap;
}

.podcast-buttons .button {
  white-space: nowrap;
}

.events-section {
  display: grid;
  gap: var(--space-2xl);
}

.event-title {
  text-align: center;
}

.year-section {
  display: grid;
  gap: var(--space-xl);
  padding-block: var(--space-l);
  border-top: 1px solid var(--color-border);
}

.year-title {
  color: var(--color-accent);
  margin: 0;
}

.event-card {
  background: var(--color-surface);
  border-radius: var(--radius-l);
  padding: var(--space-l);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--space-m);
}

.event-name {
  font-size: clamp(1.15rem, 1rem + 0.4vw, 1.5rem);
  font-weight: 600;
  margin: 0;
}

.event-date {
  font-weight: 600;
  color: var(--color-accent);
  margin: 0;
}

.event-details {
  display: grid;
  gap: var(--space-s);
  margin-left: 0;
}

.event-details ul {
  padding-left: 1.25rem;
  display: grid;
  gap: var(--space-2xs);
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-s);
}

.features-list li {
  position: relative;
  padding-left: 1.5rem;
}

.features-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.contact-form {
  background: transparent;
}

.contact-consent {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: var(--space-s);
  font-size: 0.95rem;
  color: var(--color-muted);
}

.contact-consent input[type="checkbox"] {
  margin-top: 0.3rem;
}

.card-grid {
  --grid-gap: var(--space-l);
  --grid-min: 17rem;
}

.card-grid .generic-card {
  display: grid;
  gap: var(--space-m);
}

.search-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  align-items: center;
}

.search-bar input[type="search"] {
  flex: 1 1 16rem;
}

.controls-wrapper {
  display: grid;
  gap: var(--space-l);
  justify-items: center;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  justify-content: center;
}

.filter-button {
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-muted);
  padding: 0.5rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.filter-button:hover,
.filter-button:focus-visible {
  background-color: var(--color-surface-strong);
  color: var(--color-text);
  transform: translateY(-1px);
}

.filter-button.active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.clear-search {
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-muted);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.clear-search:hover,
.clear-search:focus-visible {
  background-color: var(--color-accent);
  color: #fff;
}

.resource-grid {
  --grid-gap: var(--space-l);
  --grid-min: 18rem;
}

.resource-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: grid;
}

.resource-card:hover,
.resource-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.35);
}

.resource-card a {
  display: grid;
  color: inherit;
  text-decoration: none;
}

.resource-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.resource-card__body {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-m) var(--space-l) var(--space-l);
}

.resource-card__title {
  font-size: clamp(1.1rem, 1rem + 0.3vw, 1.35rem);
  font-weight: 600;
}

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

.toast {
  position: fixed;
  bottom: var(--space-l);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-surface-strong);
  color: var(--color-text);
  padding: var(--space-s) var(--space-l);
  border-radius: 999px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  visibility: visible;
}

.full-iframe-container,
.iframe-container {
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  min-height: clamp(20rem, 70vh, 90vh);
}

.full-iframe-container iframe,
.iframe-container iframe {
  border: none;
  width: 100%;
  height: 100%;
}

@media (max-width: 768px) {
  main {
    gap: var(--space-xl);
    padding-block: var(--space-l);
  }

  .layout-container {
    padding-inline: var(--space-m);
  }

  .video-grid {
    --grid-min: 16rem;
  }

  .features-list {
    gap: var(--space-m);
  }

  .contact-consent {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1024px) {
  .site-footer__inner {
    grid-template-columns: repeat(3, 1fr);
    align-items: center;
    text-align: left;
  }

  .site-footer__logo {
    justify-self: start;
  }

  .site-footer__socials {
    justify-content: flex-end;
  }
}