:root {
  color-scheme: light;

  --color-bg-raw: 250, 249, 245;
  --color-surface-raw: 240, 238, 230;
  --color-text-raw: 20, 20, 19;
  --color-border-raw: 176, 174, 165;
  --color-muted-raw: 61, 61, 58;
  --color-accent-raw: 188, 209, 202;

  --color-bg: rgb(var(--color-bg-raw));
  --color-surface: rgb(var(--color-surface-raw));
  --color-text: rgb(var(--color-text-raw));
  --color-border: rgb(var(--color-border-raw));
  --color-text-muted: rgb(var(--color-muted-raw));
  --color-accent: rgb(var(--color-accent-raw));

  --font-family-base:
    "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial;
  --font-family-display: "Oswald", "Inter", ui-sans-serif, system-ui;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  --font-size-root: 16px;
  --leading: 1.6;

  --global-radius: 14px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --shadow-1: 0 6px 18px rgba(20, 20, 19, 0.06);
  --shadow-2: 0 12px 40px rgba(20, 20, 19, 0.08);

  --transition-speed: 0.28s;
  --transition-easing: cubic-bezier(0.2, 0.9, 0.3, 1);

  --max-content-width: 1200px;
  --margin-section: 3rem;
}

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

::selection {
  background: rgba(var(--color-accent-raw), 0.6);
  color: var(--color-text);
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: auto;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family-base);
  line-height: var(--leading);
  font-size: var(--font-size-root);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100svh;
  text-rendering: optimizeLegibility;
  text-wrap: pretty;
}

a {
  color: var(--color-text);
  text-decoration: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.45rem 0.6rem;
}

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

[hidden] {
  display: none !important;
}

:target {
  scroll-margin-block: 20vh;
}

.container {
  width: 100%;
  max-width: var(--max-content-width);
  margin-inline: auto;
  padding-inline: 20px;
}

h1,
h3,
h4 {
  font-family: var(--font-family-display);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-wrap: balance;
}

section {
  padding-block: 120px;
  position: relative;
  background-color: var(--color-bg);
}

#hero {
  padding-block: 160px 100px;
  display: flex;
  align-items: center;
  min-height: 90vh;
  overflow: hidden;
  position: relative;
}

#hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(
      to right,
      rgba(var(--color-border-raw), 0.5) 1px,
      transparent 1px
    ),
    linear-gradient(
      to bottom,
      rgba(var(--color-border-raw), 0.5) 1px,
      transparent 1px
    );
  background-size: 40px 40px;
  opacity: 0.8;
  z-index: 0;
  mask-image: radial-gradient(
    ellipse 80% 50% at 50% 50%,
    black 40%,
    transparent 100%
  );
}

.hero-container-new {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: var(--space-10);
  width: 100%;
  position: relative;
  z-index: 2;
}

.hero-container-img {
  width: 100%;
  max-width: 1000px;
  height: auto;
}

.hero-text-content {
  text-align: left;
}

.hero-title {
  font-size: clamp(3rem, 10vw, 6.5rem);
  font-family: var(--font-family-display);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  margin-bottom: var(--space-6);
}

.hero-description {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 45ch;
  line-height: var(--leading);
}

.section-title {
  font-size: clamp(3rem, 10vw, 6rem);
  margin-bottom: 80px;
  text-align: center;
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: var(--color-text);
}

#about {
  background-color: var(--color-surface);
  border-radius: 16px;
  border: 1px solid #e0dbd3;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  padding: 3rem 2rem;
  text-align: center;
  color: #1a1a1a;
  margin: var(--margin-section);
}

.about-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 80px;
}

.about-text {
  max-width: 75ch;
}

#about .section-title {
  text-align: left;
}

#about .section-title::after {
  left: 0;
  transform: none;
}

.about-quote {
  font-family: var(--font-family-display);
  font-size: 2em;
  line-height: 1.3;
  text-transform: uppercase;
  border-top: 2px solid var(--color-border);
  padding-top: 40px;
  text-align: center;
}

@media (min-width: 768px) {
  .about-container {
    grid-template-columns: 2fr 1fr;
    align-items: center;
  }

  .about-quote {
    border-top: none;
    border-left: 2px solid var(--color-border);
    padding-top: 0;
    padding-left: 40px;
    text-align: left;
  }
}

#projects {
  padding: 120px 0;
}

.projects-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.projects-title {
  text-align: center;
  margin-bottom: 80px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--global-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  color: var(--color-text);
  position: relative;
  box-shadow: var(--shadow-1);
  transition:
    transform var(--transition-speed) var(--transition-easing),
    box-shadow var(--transition-speed) var(--transition-easing);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2);
}

.project-image-container {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-surface);
  position: relative;
}

.project-image-container picture,
.project-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform 0.6s var(--transition-easing),
    filter 0.6s ease;
  transform-origin: center;
}

.project-card:hover .project-image-container img {
  transform: scale(1.05);
  filter: brightness(0.95);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, rgba(0, 0, 0, 0.65), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-info {
  padding: var(--space-6);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-info h4 {
  font-size: 1.8em;
  margin-bottom: var(--space-3);
}

.project-info p {
  font-size: 1em;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.project-stats {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.stat {
  background: var(--color-surface);
  color: var(--color-text);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.research-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--global-radius);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  text-align: left;
  transition:
    transform var(--transition-speed) var(--transition-easing),
    box-shadow var(--transition-speed) var(--transition-easing),
    border-color var(--transition-speed) var(--transition-easing);
}

.research-card:hover {
  border-color: rgba(var(--color-text-raw), 0.5);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.research-card h4 {
  font-size: 1.3em;
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text);
}

.research-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  flex-grow: 1;
}

.research-link {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  align-self: flex-start;
  background-image: linear-gradient(
    90deg,
    var(--color-text) 0%,
    var(--color-text) 100%
  );
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size var(--transition-speed) ease;
}

.research-link:hover {
  background-size: 100% 2px;
}

#contact {
  background-color: #f3eee6;
  border-radius: 16px;
  border: 1px solid #e0dbd3;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  padding: 3rem 2rem;
  text-align: center;
  color: #1a1a1a;
  margin: var(--margin-section);
}

#contact p {
  color: var(--color-text-muted);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.1em;
}

.donate-minimal {
  display: inline-block;
  margin-bottom: var(--space-8);
}

.donate-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition:
    background var(--transition-speed) var(--transition-easing),
    transform var(--transition-speed) var(--transition-easing);
}

.donate-item:hover {
  background: rgba(0, 152, 234, 0.1);
  transform: translateY(-2px);
}

.ton-address {
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 1.9em;
  color: #0098ea;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
}

.ton-address:hover {
  color: #0078d4;
}

.email-link {
  font-size: 1.3em;
  font-weight: var(--font-weight-medium);
  display: inline-block;
  padding: 18px 40px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  margin-bottom: 50px;
  transition:
    background var(--transition-speed) var(--transition-easing),
    color var(--transition-speed) var(--transition-easing),
    transform var(--transition-speed) var(--transition-easing);
  min-height: 44px;
  position: relative;
  overflow: hidden;
}

.email-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-text);
  transition: left 0.3s ease;
  z-index: -1;
}

.email-link:hover::before {
  left: 0;
}

.email-link:hover {
  color: var(--color-bg);
  border-color: var(--color-text);
  transform: translateY(-3px);
}

.social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.social-links a {
  color: var(--color-text-muted);
  font-size: 1.8rem;
  width: 70px;
  height: 70px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition:
    transform var(--transition-speed) var(--transition-easing),
    background var(--transition-speed) var(--transition-easing),
    color var(--transition-speed) var(--transition-easing),
    border-color var(--transition-speed) var(--transition-easing),
    width var(--transition-speed) var(--transition-easing);
  position: relative;
  overflow: hidden;
}

.social-links a:hover {
  width: 180px;
  color: var(--color-bg);
  border-color: var(--color-text);
  background: var(--color-text);
  transform: translateY(-5px) scale(1.05);
  justify-content: flex-start;
  padding-left: 23px;
}

.link-text {
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  width: 0;
  margin-left: 0;
  transition:
    opacity 0.2s ease,
    width 0.2s ease,
    margin-left 0.2s ease;
  transition-delay: 0.1s;
  color: var(--color-bg);
}

.social-links a:hover .link-text {
  opacity: 1;
  width: auto;
  margin-left: var(--space-4);
}

.social-links a i {
  position: relative;
  z-index: 1;
}

#support {
  background: #1c1c1a;
  color: #f6f1e7;
  border-radius: 28px;
  margin: var(--margin-section);
  padding-block: 170px 150px;
  position: relative;
  overflow: hidden;
}

#support::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.08);
  opacity: 0.8;
  pointer-events: none;
}

.support-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  position: relative;
  z-index: 2;
}

.support-sticky {
  position: sticky;
  top: 18vh;
  align-self: start;
}

.support-kicker {
  margin: 0 0 var(--space-3);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.6);
}

.support-title {
  font-family: var(--font-family-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  text-transform: uppercase;
  margin: 0 0 var(--space-4);
  color: #f6f1e7;
}

.support-subtitle {
  max-width: 32ch;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 var(--space-8);
}

.support-scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

.support-scroll-hint span {
  display: block;
  width: 70px;
  height: 1px;
  background: rgba(255, 255, 255, 0.8);
  position: relative;
  overflow: hidden;
}

.support-scroll-hint span::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  animation: supportPulse 2.2s ease-in-out infinite;
}

@keyframes supportPulse {
  50% {
    transform: translateX(100%);
  }
}

.support-cards {
  display: grid;
  gap: var(--space-6);
}

.support-card {
  display: block;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  padding: 26px;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition-speed) var(--transition-easing),
    box-shadow var(--transition-speed) var(--transition-easing),
    border-color var(--transition-speed) var(--transition-easing);
}

.support-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(188, 209, 202, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-speed) var(--transition-easing);
}

.support-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.support-card:hover::before {
  opacity: 1;
}

.support-card.is-copied {
  border-color: rgba(188, 209, 202, 0.8);
  box-shadow: 0 0 0 2px rgba(188, 209, 202, 0.3);
}

.support-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.support-tag {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.85);
}

.support-card--copy .support-tag {
  cursor: pointer;
}

.support-action {
  font-size: 0.95rem;
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
}

.support-code {
  display: block;
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 1rem;
  color: #f6f1e7;
  margin-bottom: var(--space-3);
  word-break: break-all;
}

.support-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
}

.copy-btn {
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 6px 16px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  transition:
    background var(--transition-speed) var(--transition-easing),
    color var(--transition-speed) var(--transition-easing),
    border-color var(--transition-speed) var(--transition-easing);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}

footer {
  text-align: center;
  padding: 30px 30px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

footer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.1em;
}

#scrollToTopBtn {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  border: 2px solid var(--color-border);
  background-color: rgba(var(--color-bg-raw), 0.8);
  backdrop-filter: blur(10px);
  color: var(--color-text);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
  transform: scale(0.9);
}

#scrollToTopBtn:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
  transform: translateY(-4px) scale(1);
  border-color: var(--color-text);
}

#scrollToTopBtn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}