:root {
  --bg: #070810;
  --bg-soft: rgba(14, 16, 29, 0.88);
  --bg-panel: rgba(17, 20, 35, 0.96);
  --line: rgba(120, 126, 177, 0.16);
  --line-strong: rgba(120, 126, 177, 0.26);
  --text: #f2f4ff;
  --muted: #8589b5;
  --blue: #4db7ff;
  --green: #38f29b;
  --violet: #8b7cf7;
  --danger: #ff7f94;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --shadow-deep: 0 38px 100px rgba(0, 0, 0, 0.52);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    radial-gradient(circle at top center, rgba(77, 183, 255, 0.12), transparent 26%),
    radial-gradient(circle at 18% 12%, rgba(139, 124, 247, 0.12), transparent 20%);
  background-size: 60px 60px, 60px 60px, auto;
  overflow-x: hidden;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  padding: 14px 0 36px;
  overflow: hidden;
}

.scene-backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.scene-glow,
.scene-orbit {
  position: absolute;
  border-radius: 999px;
}

.scene-glow-a {
  width: 32rem;
  height: 32rem;
  left: -8rem;
  top: 5rem;
  background: radial-gradient(circle, rgba(77, 183, 255, 0.22), transparent 68%);
  filter: blur(14px);
  animation: glowDriftA 18s ease-in-out infinite;
}

.scene-glow-b {
  width: 28rem;
  height: 28rem;
  right: -6rem;
  top: 16rem;
  background: radial-gradient(circle, rgba(139, 124, 247, 0.18), transparent 70%);
  filter: blur(16px);
  animation: glowDriftB 24s ease-in-out infinite;
}

.scene-grid-plane {
  position: absolute;
  inset: auto -10% -22rem;
  height: 34rem;
  background:
    linear-gradient(rgba(77, 183, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 183, 255, 0.18) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(900px) rotateX(78deg);
  transform-origin: center bottom;
  opacity: 0.24;
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 1), transparent 82%);
}

.scene-orbit {
  border: 1px solid rgba(255, 255, 255, 0.08);
  filter: blur(0.2px);
}

.scene-orbit-a {
  width: 22rem;
  height: 22rem;
  right: 10%;
  top: 9rem;
  animation: orbitSpin 24s linear infinite;
}

.scene-orbit-b {
  width: 12rem;
  height: 12rem;
  left: 12%;
  top: 24rem;
  animation: orbitSpinReverse 18s linear infinite;
}

.particle-layer {
  position: absolute;
  inset: 0;
}

.ambient-particle {
  position: absolute;
  display: block;
  width: var(--size, 6px);
  height: var(--size, 6px);
  left: var(--left, 50%);
  top: var(--top, 50%);
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.95), rgba(77, 183, 255, 0.35) 48%, transparent 72%);
  opacity: var(--opacity, 0.5);
  box-shadow: 0 0 18px rgba(77, 183, 255, 0.18);
  animation:
    particleFloat var(--duration, 18s) linear infinite,
    particlePulse var(--pulse, 4.8s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

.container-xl,
.studio-layout,
.site-footer {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1rem 1rem;
  border: 1px solid rgba(120, 126, 177, 0.2);
  border-radius: 1.35rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    rgba(13, 16, 29, 0.62);
  backdrop-filter: blur(18px);
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 0.8rem;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  font-weight: 700;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.brand-subtitle {
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--muted);
}

.topbar-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.status-pill {
  padding: 0.45rem 0.8rem;
  border-radius: 0.6rem;
  border: 1px solid var(--line-strong);
  background: rgba(18, 21, 34, 0.82);
  color: var(--muted);
  font-size: 0.85rem;
}

.status-pill-live {
  color: var(--green);
  border-color: rgba(56, 242, 155, 0.3);
}

.studio-layout {
  width: min(1060px, 100%);
  margin: 0 auto;
}

.intro-block {
  padding: 3.8rem 0 1.6rem;
}

.eyebrow,
.workspace-kicker {
  margin-bottom: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.intro-block h1 {
  margin: 0;
  font-size: clamp(2.3rem, 5vw, 4rem);
  font-weight: 700;
}

.intro-block h1 span {
  color: var(--blue);
}

.intro-copy {
  width: min(760px, calc(100% - 20px));
  margin: 0.85rem auto 0;
  color: var(--muted);
  font-size: 1rem;
}

.intro-note {
  color: #9c9ed0;
}

.source-stage,
.workspace-card,
.feature-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    var(--bg-soft);
  border: 1px solid rgba(140, 154, 255, 0.18);
  box-shadow: var(--shadow-deep);
}

.source-stage {
  padding: 1rem;
  border-radius: 1.5rem;
}

.tilt-surface {
  position: relative;
  isolation: isolate;
  transform-style: preserve-3d;
  transform:
    perspective(1200px)
    rotateX(var(--tilt-x, 0deg))
    rotateY(var(--tilt-y, 0deg))
    translate3d(0, 0, 0);
  transition: transform 280ms ease, box-shadow 280ms ease, border-color 280ms ease;
  will-change: transform;
}

.tilt-surface > * {
  position: relative;
  z-index: 1;
}

.tilt-surface::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background:
    radial-gradient(circle at var(--glow-x, 50%) var(--glow-y, 50%), rgba(77, 183, 255, 0.16), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 48%);
  opacity: 0.72;
  pointer-events: none;
}

.tilt-surface::after {
  content: "";
  position: absolute;
  inset: auto 14% -1px;
  height: 26%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(77, 183, 255, 0.22), transparent 72%);
  filter: blur(24px);
  opacity: 0.3;
  pointer-events: none;
}

.tilt-surface:hover {
  border-color: rgba(77, 183, 255, 0.28);
  box-shadow: 0 28px 100px rgba(0, 0, 0, 0.56), 0 0 0 1px rgba(77, 183, 255, 0.05);
}

.source-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.source-tab {
  border-radius: 999px;
  padding: 0.75rem 1rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line-strong);
}

.source-tab.active {
  color: var(--text);
  background: linear-gradient(135deg, rgba(77, 183, 255, 0.18), rgba(139, 124, 247, 0.16));
}

.source-tab:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.drop-panel,
.url-panel {
  border-radius: 1.25rem;
  border: 2px dashed rgba(120, 126, 177, 0.24);
  min-height: 212px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)), rgba(19, 22, 37, 0.78);
}

.drop-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  padding: 1.5rem;
  cursor: pointer;
}

.drop-panel.dragging {
  border-color: rgba(77, 183, 255, 0.5);
  background: rgba(20, 27, 44, 0.95);
}

.drop-panel h2 {
  margin: 0;
  font-size: 1.7rem;
}

.drop-panel p {
  margin: 0;
  color: var(--muted);
}

.drop-icon {
  font-size: 3rem;
  line-height: 1;
  color: var(--violet);
}

.url-panel {
  padding: 1.25rem;
  display: grid;
  align-content: center;
  gap: 0.9rem;
}

.helper-copy {
  color: var(--muted);
  font-size: 0.92rem;
}

.warning-box {
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  color: #ffd6dd;
  background: rgba(255, 127, 148, 0.10);
  border: 1px solid rgba(255, 127, 148, 0.24);
}

.download-status-card {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(77, 183, 255, 0.08);
  border: 1px solid rgba(77, 183, 255, 0.18);
}

.download-status-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.download-progress-track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(120, 126, 177, 0.18);
}

.download-progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--green));
  box-shadow: 0 0 18px rgba(77, 183, 255, 0.28);
  transition: width 0.35s ease;
}

.download-status-copy {
  margin-top: 0.75rem;
  color: var(--text);
  font-size: 0.95rem;
}

.stage-actions {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1rem;
}

.feature-card {
  padding: 1.25rem;
  border-radius: 1.1rem;
  text-align: center;
  overflow: hidden;
}

.feature-icon {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

.feature-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.workspace-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  margin-top: 1rem;
}

.remix-hero {
  display: flex;
  justify-content: flex-end;
  padding: 1.2rem 0 1rem;
}

.remix-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.source-chip {
  max-width: min(340px, 100%);
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  color: var(--text);
  background: rgba(77, 183, 255, 0.12);
  border: 1px solid rgba(77, 183, 255, 0.22);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.remix-grid {
  margin-top: 0;
}

.workspace-card {
  padding: 1.4rem;
  border-radius: 1.4rem;
  overflow: hidden;
}

.workspace-head {
  margin-bottom: 1rem;
}

.workspace-head h2 {
  margin: 0;
  font-size: 1.55rem;
}

.custom-input,
.custom-input:focus {
  color: var(--text);
  background-color: rgba(255, 255, 255, 0.04);
  border-color: rgba(120, 126, 177, 0.20);
  box-shadow: none;
}

.form-select.custom-input {
  color-scheme: dark;
}

.form-select.custom-input option,
.form-select.custom-input optgroup {
  color: var(--text);
  background: #141827;
}

.custom-input:disabled,
.custom-input.form-select:disabled,
.form-select.custom-input:disabled,
.form-control.custom-input:disabled {
  color: rgba(242, 244, 255, 0.72);
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(120, 126, 177, 0.18);
  opacity: 1;
  -webkit-text-fill-color: rgba(242, 244, 255, 0.72);
  cursor: not-allowed;
}

.custom-input::placeholder {
  color: #7175a4;
}

.slider-card,
.switch-row,
.result-placeholder,
.result-banner {
  padding: 1rem;
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(120, 126, 177, 0.18);
}

.slider-value {
  color: var(--blue);
  font-weight: 700;
}

.range-accent {
  accent-color: var(--violet);
}

.switch-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.custom-switch {
  width: 3rem !important;
  height: 1.65rem;
  background-color: rgba(255, 255, 255, 0.16);
  border-color: transparent;
}

.custom-switch:checked {
  background-color: var(--green);
}

.primary-btn,
.primary-btn:hover,
.secondary-btn,
.secondary-btn:hover {
  border-radius: 999px;
  padding: 0.9rem 1.2rem;
  font-weight: 700;
}

.primary-btn,
.primary-btn:hover {
  color: #05070d;
  background: linear-gradient(135deg, var(--blue), var(--green));
  border: 0;
}

.secondary-btn,
.secondary-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(120, 126, 177, 0.2);
}

.result-stack {
  display: grid;
  gap: 1rem;
}

.result-banner {
  display: grid;
  gap: 0.3rem;
}

.result-banner span {
  color: var(--muted);
}

.ai-summary-card {
  padding: 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(56, 242, 155, 0.24);
  background: linear-gradient(135deg, rgba(56, 242, 155, 0.12), rgba(77, 183, 255, 0.10));
}

.ai-summary-label {
  margin-bottom: 0.35rem;
  color: #9ff7cb;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.preview-media {
  width: 100%;
  border-radius: 1rem;
  background: #000;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tag-pill {
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(120, 126, 177, 0.18);
}

.alert-danger {
  background: rgba(255, 127, 148, 0.12);
  border-color: rgba(255, 127, 148, 0.24);
  color: #ffd6dd;
}

.ad-showcase {
  width: min(1060px, 100%);
  margin: 1.25rem auto 0;
  padding: 0;
  overflow: hidden;
}

.ad-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
  align-items: start;
}

.ad-stage {
  display: grid;
  place-items: center;
  padding: 0.85rem;
  border-radius: 1.15rem;
  background: rgba(248, 250, 255, 0.98);
  border: 1px solid rgba(179, 190, 255, 0.26);
  box-shadow: 0 18px 40px rgba(9, 13, 28, 0.24);
  overflow: hidden;
}

.ad-stage-span-full {
  grid-column: 1 / -1;
}

.ad-slot {
  display: grid;
  justify-items: center;
  align-items: start;
  min-height: 90px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 0.15rem;
}

.ad-slot-728 {
  width: max-content;
  min-width: 728px;
}

.ad-slot-468 {
  width: max-content;
  min-width: 468px;
}

.ad-slot-320 {
  width: max-content;
  min-width: 320px;
}

.ad-slot-300 {
  width: max-content;
  min-width: 300px;
  min-height: 250px;
}

.ad-direct-link {
  display: none;
}

.site-footer {
  width: min(1060px, 100%);
  margin: 1.25rem auto 0;
  padding: 1.15rem 1.25rem;
  border: 1px solid rgba(120, 126, 177, 0.22);
  border-radius: 1.45rem;
  background:
    radial-gradient(circle at 18% 50%, rgba(77, 183, 255, 0.10), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.01)),
    rgba(10, 13, 24, 0.64);
  backdrop-filter: blur(18px);
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
  align-items: center;
  overflow: hidden;
}

.footer-brand {
  flex: 1 1 auto;
  min-width: 0;
}

.footer-brand-mark {
  display: flex;
  align-items: center;
  gap: 0.95rem;
}

.footer-brand-icon {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border-radius: 0.95rem;
  color: #f5f8ff;
  background:
    linear-gradient(135deg, rgba(77, 183, 255, 0.9), rgba(139, 124, 247, 0.9));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 12px 32px rgba(77, 183, 255, 0.2);
  font-size: 1.15rem;
}

.footer-label {
  color: #a7afe8;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
}

.footer-copy {
  max-width: 36rem;
  color: #8d94c2;
  font-size: 1rem;
  line-height: 1.55;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.7rem;
  flex: 0 0 auto;
}

.footer-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  color: #eef3ff;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.025));
  border: 1px solid rgba(120, 126, 177, 0.24);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  font-size: 0.84rem;
  font-weight: 600;
}

.footer-pill-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: radial-gradient(circle, #8ff7c3, #2edc8b);
  box-shadow: 0 0 12px rgba(56, 242, 155, 0.45);
  flex: 0 0 auto;
}

.footer-pill-dot-accent {
  background: radial-gradient(circle, #95d7ff, #4db7ff);
  box-shadow: 0 0 12px rgba(77, 183, 255, 0.45);
}

@keyframes glowDriftA {
  0%, 100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(4rem, 2rem, 0) scale(1.08);
  }
}

@keyframes glowDriftB {
  0%, 100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-3rem, -2.5rem, 0) scale(1.12);
  }
}

@keyframes orbitSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbitSpinReverse {
  from {
    transform: rotate(360deg);
  }
  to {
    transform: rotate(0deg);
  }
}

@keyframes particleFloat {
  0% {
    transform: translate3d(0, 0, 0) scale(0.85);
  }
  50% {
    transform: translate3d(var(--drift-x, 24px), calc(var(--drift-y, -140px) * 0.55), 0) scale(1);
  }
  100% {
    transform: translate3d(calc(var(--drift-x, 24px) * 1.15), var(--drift-y, -140px), 0) scale(0.78);
  }
}

@keyframes particlePulse {
  0%, 100% {
    opacity: calc(var(--opacity, 0.5) * 0.7);
  }
  50% {
    opacity: var(--opacity, 0.5);
  }
}

@media (max-width: 991.98px) {
  .ad-grid {
    grid-template-columns: 1fr;
  }

  .feature-strip,
  .workspace-grid {
    grid-template-columns: 1fr 1fr;
  }

  .scene-grid-plane,
  .scene-orbit {
    opacity: 0.12;
  }
}

@media (max-width: 767.98px) {
  .ad-showcase {
    padding-left: 0;
    padding-right: 0;
  }

  .topbar,
  .switch-row,
  .remix-hero,
  .remix-hero-actions,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .feature-strip,
  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .intro-block {
    padding-top: 2.4rem;
  }

  .drop-panel h2 {
    font-size: 1.35rem;
  }

  .footer-meta {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ambient-particle,
  .scene-glow,
  .scene-orbit {
    animation: none;
  }

  .tilt-surface {
    transition: none;
    transform: none;
  }
}