:root {
  color-scheme: dark;
  --ink: #f5f4ef;
  --muted: #aaa9a1;
  --line: rgba(255, 255, 255, 0.11);
  --panel: rgba(21, 23, 25, 0.82);
  --accent: #d7ff74;
  --accent-soft: rgba(215, 255, 116, 0.12);
  --blue: #78a8ff;
  font-family: "DM Sans", system-ui, sans-serif;
  background: #0b0c0d;
  color: var(--ink);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 80% 8%, rgba(38, 77, 72, 0.28), transparent 35rem),
    linear-gradient(180deg, #0b0c0d 0%, #101214 100%);
}

.ambient {
  position: fixed;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  filter: blur(110px);
  opacity: .16;
  pointer-events: none;
}

.ambient-one { background: var(--accent); top: 20%; left: -10rem; }
.ambient-two { background: var(--blue); right: -12rem; bottom: 5%; }

.site-header,
main,
footer {
  position: relative;
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font: 700 1.05rem "Manrope", sans-serif;
  letter-spacing: -.02em;
}

.brand-mark { display: grid; gap: 3px; width: 24px; }
.brand-mark span { display: block; height: 3px; border-radius: 4px; background: var(--accent); }
.brand-mark span:nth-child(2) { width: 17px; }
.brand-mark span:nth-child(3) { width: 10px; }

.status,
.private-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  font-size: .78rem;
}

.status span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent);
}

.hero { padding: 112px 0 96px; max-width: 920px; }

.eyebrow,
.kicker {
  margin: 0 0 18px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .16em;
  font: 700 .72rem "Manrope", sans-serif;
}

h1,
h2,
h3 { font-family: "Manrope", sans-serif; margin-top: 0; }

h1 {
  margin-bottom: 26px;
  font-size: clamp(3.25rem, 8vw, 6.8rem);
  line-height: .96;
  letter-spacing: -.065em;
  max-width: 1050px;
}

.hero-copy,
.auth-copy {
  max-width: 690px;
  margin: 0;
  color: #cac9c2;
  font-size: clamp(1.1rem, 2.3vw, 1.45rem);
  line-height: 1.55;
}

.auth-card,
.workspace {
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: clamp(24px, 5vw, 54px);
  background: linear-gradient(145deg, rgba(28, 31, 32, .92), rgba(15, 17, 18, .9));
  box-shadow: 0 30px 90px rgba(0, 0, 0, .38);
}

.auth-card { margin-bottom: 28px; }
.auth-card h2 { margin-bottom: 16px; }
.auth-copy { font-size: 1rem; margin-bottom: 28px; }

.workspace-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 38px;
}

h2 { margin-bottom: 0; font-size: clamp(1.9rem, 4vw, 3rem); letter-spacing: -.045em; }

#project-form,
.login-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 22px; }

label { margin-top: 10px; font-weight: 600; font-size: .88rem; }
#project-form label,
#project-form input,
#project-form textarea,
#project-form .field-note,
#project-form button,
#project-form .form-note { grid-column: 1 / -1; }

.auth-actions {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.auth-note {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.5;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 15px 16px;
  color: var(--ink);
  background: rgba(4, 5, 5, .54);
  font: inherit;
  resize: vertical;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

input:focus,
textarea:focus { border-color: rgba(215, 255, 116, .7); box-shadow: 0 0 0 4px var(--accent-soft); }

.field-note,
.form-note,
.message { margin: 8px 0; color: var(--muted); font-size: .8rem; line-height: 1.5; }

button {
  width: fit-content;
  margin-top: 12px;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  background: var(--accent);
  color: #12150b;
  cursor: pointer;
  font: 700 .9rem "Manrope", sans-serif;
  transition: transform .2s, box-shadow .2s, opacity .2s;
}

button:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(215, 255, 116, .16); }
button:disabled { cursor: wait; opacity: .56; transform: none; }
.secondary-button { background: transparent; border: 1px solid var(--line); color: var(--ink); }

.account-panel { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.account-panel p { margin: 0; color: var(--muted); }

.saved-project {
  margin-top: 28px;
  border: 1px solid rgba(215, 255, 116, .25);
  border-radius: 16px;
  padding: 18px;
  background: var(--accent-soft);
  line-height: 1.5;
}


.resource-export {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 12px;
}

.resource-export h3 {
  margin-bottom: 10px;
  font-size: 1.35rem;
  letter-spacing: -.025em;
}

.resource-export p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.resource-download {
  width: fit-content;
  margin-top: 4px;
  border: 1px solid rgba(215, 255, 116, .3);
  border-radius: 999px;
  padding: 12px 18px;
  color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
  font: 700 .86rem "Manrope", sans-serif;
  transition: transform .2s, border-color .2s, background .2s;
}

.resource-download:hover {
  transform: translateY(-1px);
  border-color: rgba(215, 255, 116, .6);
  background: rgba(215, 255, 116, .16);
}

.principles { padding: 120px 0 100px; }
.section-intro { max-width: 660px; margin-bottom: 46px; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.principle-grid article { min-height: 260px; padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); }
.principle-grid article > span { color: var(--accent); font: 600 .76rem "Manrope", sans-serif; }
.principle-grid h3 { margin: 54px 0 12px; font-size: 1.5rem; }
.principle-grid p { margin: 0; color: var(--muted); line-height: 1.65; }

footer { display: flex; justify-content: space-between; border-top: 1px solid var(--line); padding: 30px 0 48px; color: var(--muted); font-size: .82rem; }

@media (max-width: 700px) {
  .site-header { padding-top: 20px; }
  .status { font-size: 0; padding: 9px; }
  .hero { padding: 80px 0 72px; }
  .workspace-heading { display: block; }
  .private-badge { margin-top: 18px; }
  #project-form, .login-form { grid-template-columns: 1fr; }
  .login-form label, .login-form input, .auth-actions, .auth-note { grid-column: 1; }
  .account-panel { align-items: flex-start; flex-direction: column; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { min-height: 220px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}