/* ─── BRIEF PAGE ───────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700;800&display=swap');

/* NAV */
.brief-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(5,5,12,.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.brief-nav-logo span { color: var(--p3); }
.brief-nav-back {
  font-size: .85rem;
  color: var(--txt2);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .4rem;
  transition: color .2s;
}
.brief-nav-back:hover { color: var(--p3); }

/* HERO */
.brief-hero {
  padding: 9rem 1.5rem 3rem;
  text-align: center;
  position: relative;
  z-index: 1;
}
.brief-badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--p3);
  background: rgba(168,85,247,.12);
  border: 1px solid rgba(168,85,247,.3);
  padding: .35rem .9rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}
.brief-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  background: linear-gradient(135deg, #e2e8f0 0%, var(--p3) 60%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}
.brief-subtitle {
  color: var(--txt2);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

/* PROGRESS BAR */
.brief-progress-wrap {
  max-width: 560px;
  margin: 0 auto;
}
.brief-progress-bar {
  height: 4px;
  background: rgba(255,255,255,.08);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: .6rem;
}
.brief-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--p2), var(--cyan));
  transition: width .4s ease;
  box-shadow: 0 0 10px rgba(168,85,247,.5);
}
.brief-progress-text {
  font-size: .8rem;
  color: var(--txt2);
}

/* MAIN LAYOUT */
.brief-main {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.5rem 6rem;
}

/* SECTION BLOCK */
.brief-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem 2.5rem;
  margin-bottom: 1.5rem;
  transition: border-color .3s, box-shadow .3s;
}
.brief-block:hover {
  border-color: rgba(168,85,247,.4);
  box-shadow: 0 0 30px rgba(168,85,247,.07);
}
.brief-block-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.brief-block-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
}
.brief-block-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--txt);
  margin-bottom: .25rem;
}
.brief-block-desc {
  font-size: .85rem;
  color: var(--txt2);
}

/* FIELDS */
.brief-fields {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.fields-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.field-group {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.field-group label {
  font-size: .875rem;
  font-weight: 500;
  color: var(--txt2);
}
.field-group label .req {
  color: var(--p3);
}
.field-group input,
.field-group textarea,
.field-group select {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  padding: .75rem 1rem;
  color: var(--txt);
  font-family: 'Space Grotesk', sans-serif;
  font-size: .9rem;
  outline: none;
  transition: border-color .25s, box-shadow .25s;
  width: 100%;
  resize: vertical;
}
.field-group input::placeholder,
.field-group textarea::placeholder {
  color: rgba(148,163,184,.4);
}
.field-group input:focus,
.field-group textarea:focus,
.field-group select:focus {
  border-color: var(--p3);
  box-shadow: 0 0 0 3px rgba(168,85,247,.15);
}
.field-group input.error,
.field-group textarea.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,.1);
}
.field-group select option {
  background: var(--bg2);
}

/* RADIO GROUPS */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.radio-option {
  display: flex;
  align-items: center;
  gap: 0;
  cursor: pointer;
}
.radio-option input { display: none; }
.radio-option span {
  display: inline-block;
  padding: .5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  font-size: .85rem;
  color: var(--txt2);
  background: transparent;
  transition: all .2s;
  user-select: none;
  cursor: pointer;
}
.radio-option input:checked + span {
  background: rgba(168,85,247,.2);
  border-color: var(--p3);
  color: var(--p4);
  box-shadow: 0 0 12px rgba(168,85,247,.2);
}
.radio-option:hover span {
  border-color: rgba(168,85,247,.4);
  color: var(--txt);
}

/* CHECKBOX GROUP */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.checkbox-option {
  display: flex;
  align-items: center;
  gap: 0;
  cursor: pointer;
}
.checkbox-option input { display: none; }
.checkbox-option span {
  display: inline-block;
  padding: .5rem 1.1rem;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.12);
  font-size: .85rem;
  color: var(--txt2);
  background: transparent;
  transition: all .2s;
  user-select: none;
  cursor: pointer;
}
.checkbox-option input:checked + span {
  background: rgba(0,212,255,.12);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* BUDGET FIELDS */
.budget-row {
  display: flex;
  align-items: center;
  gap: .75rem;
}
.budget-row span {
  color: var(--txt2);
  font-size: .9rem;
  white-space: nowrap;
}
.budget-row input { flex: 1; }

/* COMPETITORS */
.comp-card {
  background: rgba(255,255,255,.02);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}
.comp-card-title {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--p3);
  margin-bottom: 1rem;
}

/* SUBMIT */
.brief-submit-wrap {
  text-align: center;
  padding: 1rem 0 2rem;
}
.brief-submit-note {
  font-size: .8rem;
  color: var(--txt2);
  margin-bottom: 1.25rem;
}
.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  padding: 1rem 2.75rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--p2), var(--p3));
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, opacity .2s;
  box-shadow: 0 4px 24px rgba(124,58,237,.4);
  position: relative;
  overflow: hidden;
}
.btn-submit::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.1), transparent);
  opacity: 0;
  transition: opacity .2s;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(124,58,237,.55); }
.btn-submit:hover::before { opacity: 1; }
.btn-submit:active { transform: translateY(0); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* SUCCESS STATE */
.brief-success {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 4rem 2rem 6rem;
  position: relative;
  z-index: 1;
  max-width: 560px;
  margin: 0 auto;
}
.brief-success.visible { display: flex; }
.brief-success-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(57,255,20,.12);
  border: 2px solid rgba(57,255,20,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  animation: successPulse 2s infinite;
}
@keyframes successPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(57,255,20,.3); }
  50% { box-shadow: 0 0 0 20px rgba(57,255,20,0); }
}
.brief-success h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--txt);
  margin-bottom: .75rem;
}
.brief-success p {
  color: var(--txt2);
  line-height: 1.7;
  margin-bottom: 2rem;
}
.btn-home {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 2rem;
  color: var(--p3);
  border: 1px solid rgba(168,85,247,.4);
  border-radius: 12px;
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all .2s;
  background: rgba(168,85,247,.08);
}
.btn-home:hover {
  background: rgba(168,85,247,.15);
  border-color: var(--p3);
  transform: translateY(-1px);
}

/* REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* STICKY PROGRESS */
.sticky-progress {
  position: sticky;
  top: 64px;
  z-index: 900;
  background: rgba(5,5,12,.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: .5rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.sticky-progress .brief-progress-bar { flex: 1; margin-bottom: 0; }
.sticky-progress .brief-progress-text { font-size: .75rem; color: var(--txt2); white-space: nowrap; }

/* ─── RESPONSIVE ─── */
@media (max-width: 600px) {
  .brief-block { padding: 1.5rem 1.25rem; }
  .fields-row { grid-template-columns: 1fr; }
  .brief-hero { padding-top: 7rem; }
  .brief-block-header { flex-direction: row; }
}