:root,
:root[data-theme='dark'] {
  --bg: #05070f;
  --surface: rgba(13, 19, 31, 0.78);
  --surface-strong: rgba(8, 13, 22, 0.92);
  --border: rgba(146, 177, 255, 0.2);
  --brand: #66d9ff;
  --brand-2: #19b8a8;
  --text-main: #eef3ff;
  --text-dim: #94a1bd;
  --nav-bg: rgba(6, 13, 26, 0.7);
  --toggle-bg: rgba(11, 19, 34, 0.9);
  --toggle-text: #d9e6ff;
}

:root[data-theme='light'] {
  --bg: #1b2235;
  --surface: rgba(32, 45, 72, 0.8);
  --surface-strong: rgba(25, 37, 63, 0.94);
  --border: rgba(168, 193, 255, 0.34);
  --brand: #8ce9ff;
  --brand-2: #53decf;
  --text-main: #f8fbff;
  --text-dim: #d8e2ff;
  --nav-bg: rgba(34, 47, 76, 0.74);
  --toggle-bg: rgba(21, 35, 59, 0.95);
  --toggle-text: #eef4ff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Manrope', sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  margin: 0;
  min-height: 100vh;
}

#root {
  min-height: 100vh;
}

.nebula-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background:
    radial-gradient(circle at 15% 10%, rgba(25, 184, 168, 0.18) 0%, transparent 42%),
    radial-gradient(circle at 84% 14%, rgba(102, 217, 255, 0.2) 0%, transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(59, 106, 255, 0.18) 0%, transparent 55%),
    linear-gradient(180deg, #060a16 0%, #04070f 100%);
}

.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image:
    radial-gradient(1px 1px at 10% 20%, #d4e2ff25, transparent),
    radial-gradient(1px 1px at 30% 50%, #a9f0ff30, transparent),
    radial-gradient(2px 2px at 80% 10%, #ffffff12, transparent);
  background-size: 220px 220px;
}

.config-card {
  background: linear-gradient(160deg, rgba(14, 23, 38, 0.9), rgba(8, 13, 24, 0.72));
  backdrop-filter: blur(26px);
  border: 1px solid var(--border);
  border-radius: 40px;
  box-shadow: 0 24px 60px rgba(2, 6, 16, 0.45);
}

.btn-model {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(130, 154, 210, 0.25);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-model-active {
  background: linear-gradient(145deg, rgba(29, 69, 152, 0.5), rgba(18, 110, 119, 0.28));
  border: 2px solid rgba(130, 240, 255, 0.46);
  box-shadow: 0 0 30px rgba(102, 217, 255, 0.2);
}

.font-heading {
  font-family: 'Sora', sans-serif;
  letter-spacing: -0.02em;
}

.glass-panel {
  background: linear-gradient(140deg, var(--surface), rgba(7, 12, 22, 0.75));
  border: 1px solid var(--border);
  backdrop-filter: blur(26px);
}

.btn-deploy-gradient {
  background: linear-gradient(135deg, #1ea8ff 0%, #19b8a8 100%);
  color: #f8fbff;
  box-shadow: 0 12px 30px rgba(25, 184, 168, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.btn-deploy-gradient:hover {
  filter: brightness(1.06);
  box-shadow: 0 14px 34px rgba(102, 217, 255, 0.34);
}

.btn-deploy-gradient:active {
  transform: scale(0.985);
}

.theme-nav {
  background: var(--nav-bg);
  border-color: var(--border);
}

.theme-toggle {
  background: var(--toggle-bg);
  color: var(--toggle-text);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(3, 10, 22, 0.28);
}

.theme-toggle:hover {
  filter: brightness(1.08);
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.animate-fadeIn {
  animation: fadeIn 0.5s ease-in-out;
}

.transition-opacity {
  transition: opacity 0.5s ease-in-out;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

@keyframes gradient {
  0% {
    background-position: 0 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0 50%;
  }
}

@keyframes pulse-glow {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
  }

  50% {
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
  }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradient 3s ease infinite;
}

.animate-pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

.animation-delay-1000 {
  animation-delay: 1s;
}

.animation-delay-2000 {
  animation-delay: 2s;
}

.bg-gradient-text {
  background: linear-gradient(45deg, #ffffff, #60a5fa, #8b5cf6, #ffffff);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient 4s ease infinite;
}