:root {
  --font: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 28px;
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);

  --bg: #faf8ff;
  --bg-gradient: linear-gradient(145deg, #fdf4ff 0%, #f0f9ff 45%, #fff7ed 100%);
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --border: rgba(148, 163, 184, 0.22);
  --text: #1e293b;
  --text-muted: #64748b;
  --shadow: 0 4px 24px rgba(99, 102, 241, 0.08);
  --shadow-hover: 0 12px 40px rgba(99, 102, 241, 0.16);

  --sky: #38bdf8;
  --sky-bg: #e0f2fe;
  --violet: #a78bfa;
  --violet-bg: #ede9fe;
  --coral: #fb7185;
  --coral-bg: #ffe4e6;
  --mint: #34d399;
  --mint-bg: #d1fae5;

  --gradient: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f472b6 100%);
  --gradient-soft: linear-gradient(135deg, #e0e7ff 0%, #fae8ff 50%, #fce7f3 100%);

  --error: #f43f5e;
  --success: #10b981;

  --blob-1: rgba(167, 139, 250, 0.35);
  --blob-2: rgba(56, 189, 248, 0.3);
  --blob-3: rgba(251, 113, 133, 0.28);
}

[data-theme="dark"] {
  --bg: #0f1117;
  --bg-gradient: linear-gradient(145deg, #13111c 0%, #0f172a 45%, #1a1220 100%);
  --surface: rgba(30, 32, 44, 0.75);
  --surface-solid: #1e2030;
  --border: rgba(148, 163, 184, 0.12);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 40px rgba(129, 140, 248, 0.2);

  --sky-bg: rgba(56, 189, 248, 0.15);
  --violet-bg: rgba(167, 139, 250, 0.15);
  --coral-bg: rgba(251, 113, 133, 0.15);
  --mint-bg: rgba(52, 211, 153, 0.12);

  --gradient-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(192, 132, 252, 0.12) 50%, rgba(244, 114, 182, 0.1) 100%);

  --blob-1: rgba(167, 139, 250, 0.18);
  --blob-2: rgba(56, 189, 248, 0.15);
  --blob-3: rgba(251, 113, 133, 0.14);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* Floating background blobs */
.bg-blobs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  animation: float 18s ease-in-out infinite;
}

.blob-1 {
  width: 420px;
  height: 420px;
  background: var(--blob-1);
  top: -8%;
  right: -5%;
  animation-delay: 0s;
}

.blob-2 {
  width: 360px;
  height: 360px;
  background: var(--blob-2);
  bottom: 10%;
  left: -8%;
  animation-delay: -6s;
}

.blob-3 {
  width: 280px;
  height: 280px;
  background: var(--blob-3);
  top: 45%;
  left: 55%;
  animation-delay: -12s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(24px, -20px) scale(1.05); }
  66% { transform: translate(-16px, 14px) scale(0.97); }
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface-solid) 72%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 10px;
  background: var(--gradient);
  color: white;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(129, 140, 248, 0.35);
}

.theme-toggle {
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  transition: color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow);
}

.theme-toggle:hover {
  color: #818cf8;
  border-color: rgba(129, 140, 248, 0.4);
  transform: scale(1.05);
}

.theme-icon--light { display: none; }
[data-theme="dark"] .theme-icon--dark { display: none; }
[data-theme="dark"] .theme-icon--light { display: block; }

/* Main */
.main {
  flex: 1;
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3.5rem;
  position: relative;
  z-index: 1;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 2.75rem;
  animation: fade-up 0.7s ease both;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 0.85rem;
}

.hero-gradient {
  display: inline-block;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 28rem;
  margin: 0 auto;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Link cards */
.links {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2.75rem;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  animation: fade-up 0.7s ease both;
}

.link-card:nth-child(1) { animation-delay: 0.08s; }
.link-card:nth-child(2) { animation-delay: 0.16s; }
.link-card:nth-child(3) { animation-delay: 0.24s; }

.link-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: color-mix(in srgb, var(--card-accent, #818cf8) 35%, var(--border));
}

.link-card:focus-visible {
  outline: 2px solid #818cf8;
  outline-offset: 3px;
}

.link-card--repos { --card-accent: var(--sky); }
.link-card--xmpp { --card-accent: var(--violet); }
.link-card--paste { --card-accent: var(--coral); }

.link-icon-wrap {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.link-card--repos .link-icon-wrap {
  background: var(--sky-bg);
  color: #0284c7;
}

.link-card--xmpp .link-icon-wrap {
  background: var(--violet-bg);
  color: #7c3aed;
}

.link-card--paste .link-icon-wrap {
  background: var(--coral-bg);
  color: #e11d48;
}

[data-theme="dark"] .link-card--repos .link-icon-wrap { color: var(--sky); }
[data-theme="dark"] .link-card--xmpp .link-icon-wrap { color: var(--violet); }
[data-theme="dark"] .link-card--paste .link-icon-wrap { color: var(--coral); }

.link-card:hover .link-icon-wrap {
  transform: scale(1.08) rotate(-3deg);
}

.link-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.link-name {
  font-weight: 600;
  font-size: 1.05rem;
}

.link-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.link-arrow {
  color: var(--text-muted);
  opacity: 0.5;
  transition: opacity var(--transition), transform var(--transition), color var(--transition);
}

.link-card:hover .link-arrow {
  opacity: 1;
  color: var(--card-accent, #818cf8);
  transform: translateX(4px);
}

/* Contact */
.contact {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  animation: fade-up 0.7s ease 0.32s both;
}

.contact-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 1.5rem 0;
}

.contact-emoji {
  font-size: 2rem;
  line-height: 1;
  filter: drop-shadow(0 2px 6px rgba(244, 114, 182, 0.3));
}

.contact-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.contact-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.contact-form {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

.field input,
.field textarea {
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--surface-solid);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.55;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: #a78bfa;
  box-shadow: 0 0 0 4px rgba(167, 139, 250, 0.18);
}

.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.form-footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.submit-btn {
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: var(--gradient);
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.75rem;
  cursor: pointer;
  align-self: flex-start;
  box-shadow: 0 6px 20px rgba(129, 140, 248, 0.35);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(129, 140, 248, 0.45);
}

.submit-btn:active:not(:disabled) {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.form-status {
  font-size: 0.875rem;
  min-height: 1.25rem;
  font-weight: 500;
}

.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }

/* Footer */
.footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

/* Responsive */
@media (max-width: 540px) {
  .main {
    padding-top: 1.75rem;
  }

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

  .link-card {
    padding: 1rem;
  }

  .contact-header,
  .contact-form {
    padding-left: 1.15rem;
    padding-right: 1.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}