/* Booking · Step 4 (project brief: business + goals + uploads) — separate file */

.bk-brief { gap: 22px; }

/* section card */
.bk-sec {
  position: relative;
  padding: 20px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(247,250,247,0.85));
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 8px 20px rgba(48,44,30,0.05);
  display: grid;
  gap: 14px;
  animation: bk-reveal 0.6s var(--bk-ease) both;
}
.bk-sec:nth-child(2) { animation-delay: 0.1s; }
.bk-sec:nth-child(3) { animation-delay: 0.2s; }

.bk-sec__head { display: flex; align-items: center; gap: 12px; }
.bk-sec__ic {
  flex: 0 0 auto; width: 40px; height: 40px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; background: linear-gradient(135deg, var(--bk-green), var(--bk-green-d)); font-size: 0.95rem;
  box-shadow: 0 8px 18px rgba(34,197,94,0.3);
  transition: transform 0.4s var(--bk-ease);
}
.bk-sec:hover .bk-sec__ic { transform: rotate(-6deg) scale(1.05); }
.bk-sec__head h3 { font-family: var(--bk-head); font-weight: 800; font-size: 1rem; color: var(--bk-ink); margin: 0; }
.bk-sec__head p { font-size: 0.76rem; color: var(--bk-muted); margin: 2px 0 0; }

.bk-field label small { font-weight: 400; color: #9aa09b; }
.bk-brief .bk-input { transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, transform 0.3s var(--bk-ease); }
.bk-brief .bk-input:focus-within { transform: translateY(-1px); }
.bk-brief .bk-input__ic { transition: transform 0.3s var(--bk-ease), color 0.3s ease; }
.bk-brief .bk-input:focus-within .bk-input__ic { transform: scale(1.15); color: var(--bk-green-d); }

/* chips */
.bk-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.bk-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 15px; border-radius: 999px; cursor: pointer;
  border: 1.5px solid rgba(27,28,30,0.1);
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  font-family: var(--bk-head); font-weight: 700; font-size: 0.8rem; color: var(--bk-text);
  transition: transform 0.3s var(--bk-ease), border-color 0.25s ease, background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}
.bk-chip i { color: var(--bk-green-d); font-size: 0.8rem; transition: transform 0.3s var(--bk-ease); }
.bk-chip:hover { transform: translateY(-2px); border-color: var(--bk-green); box-shadow: 0 8px 18px rgba(34,197,94,0.15); }
.bk-chip:hover i { transform: scale(1.15); }
.bk-chip.is-on {
  background: linear-gradient(135deg, var(--bk-green), var(--bk-green-d));
  color: #fff; border-color: transparent;
  box-shadow: 0 10px 24px rgba(34,197,94,0.4);
}
.bk-chip.is-on i { color: #fff; }
.bk-chip.is-on { animation: bk-chip-pop 0.35s var(--bk-ease); }
@keyframes bk-chip-pop { 0% { transform: scale(0.94); } 60% { transform: scale(1.05); } 100% { transform: scale(1); } }

/* textarea */
.bk-input--area { height: auto; padding: 12px 14px 24px; align-items: flex-start; }
.bk-input--area textarea { flex: 1; width: 100%; border: 0; outline: none; background: transparent; resize: vertical; min-height: 70px; font-family: inherit; font-size: 0.9rem; line-height: 1.55; color: var(--bk-text); }
.bk-input--area textarea::placeholder { color: #aab0ab; }
.bk-count { position: absolute; right: 12px; bottom: 6px; font-size: 0.66rem; color: #9aa09b; background: rgba(255,255,255,0.85); padding: 1px 6px; border-radius: 8px; }
.bk-count b { font-weight: 600; color: var(--bk-muted); }
.bk-count.is-max b { color: #ef4444; }

/* upload zone */
.bk-drop {
  position: relative;
  padding: 34px 20px;
  border-radius: 20px;
  border: 2px dashed rgba(34,197,94,0.5);
  background:
    radial-gradient(120% 80% at 15% 0%, rgba(232,248,238,0.9), transparent 55%),
    radial-gradient(120% 90% at 100% 100%, rgba(224,244,255,0.8), transparent 55%),
    linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  text-align: center;
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s var(--bk-ease), box-shadow 0.3s ease;
}
.bk-drop:hover { border-color: var(--bk-green); transform: translateY(-2px); box-shadow: 0 16px 34px rgba(34,197,94,0.14); }
.bk-drop.is-over { border-color: var(--bk-green); background: rgba(34,197,94,0.08); transform: scale(1.01); }
.bk-drop__inner { position: relative; z-index: 1; display: grid; gap: 6px; justify-items: center; }
.bk-drop__ic {
  width: 62px; height: 62px; border-radius: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: #fff; background: var(--bk-green);
  box-shadow: 0 12px 28px rgba(34,197,94,0.35);
  margin-bottom: 6px;
  animation: bk-drop-float 3s ease-in-out infinite;
}
@keyframes bk-drop-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.bk-drop.is-over .bk-drop__ic { animation: bk-drop-bounce 0.5s var(--bk-ease) infinite alternate; }
@keyframes bk-drop-bounce { to { transform: translateY(-12px) scale(1.08); } }
.bk-drop__inner b { font-family: var(--bk-head); font-weight: 800; font-size: 0.98rem; color: var(--bk-ink); }
.bk-drop__inner > span { font-size: 0.82rem; color: var(--bk-muted); }
.bk-drop__browse { border: 0; background: transparent; padding: 0; cursor: pointer; font-family: var(--bk-head); font-weight: 800; font-size: 0.84rem; color: var(--bk-green-d); text-decoration: underline; text-underline-offset: 3px; }
.bk-drop__rules { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 10px; }
.bk-drop__rules em { display: inline-flex; align-items: center; gap: 5px; font-style: normal; font-size: 0.66rem; color: var(--bk-muted); padding: 5px 9px; border-radius: 999px; background: rgba(27,28,30,0.05); }
.bk-drop__rules i { color: var(--bk-green-d); }
.bk-drop__ring { position:absolute; inset:0; overflow:hidden; border-radius:inherit; pointer-events:none; }
.bk-drop__ring::before, .bk-drop__ring::after {
  content:""; position:absolute; border-radius:50%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.9), rgba(34,197,94,0.25) 60%, rgba(120,190,255,0.18));
  opacity:0.5;
}
.bk-drop__ring::before { width:90px; height:90px; left:8%; bottom:-40px; animation: bk-bub 9s linear infinite; }
.bk-drop__ring::after { width:56px; height:56px; right:12%; bottom:-30px; animation: bk-bub 7s linear infinite 1.5s; }
@keyframes bk-bub { 0%{ transform:translateY(0) scale(0.9); opacity:0;} 15%{opacity:0.5;} 100%{ transform:translateY(-220px) scale(1.1); opacity:0;} }

/* file list */
.bk-files { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.bk-files:empty { display: none; }
.bk-file {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 14px;
  background: #fff; border: 1px solid rgba(27,28,30,0.06);
  animation: bk-file-in 0.4s var(--bk-ease) both;
}
@keyframes bk-file-in { from { opacity: 0; transform: translateY(8px) scale(0.98); } to { opacity: 1; transform: none; } }
.bk-file__ic {
  width: 42px; height: 42px; border-radius: 11px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #fff; background: var(--bk-ink); overflow: hidden;
}
.bk-file__ic img { width: 100%; height: 100%; object-fit: cover; }
.bk-file__ic.is-pdf { background: #ef4444; }
.bk-file__ic.is-vid { background: #6366f1; }
.bk-file__meta { min-width: 0; }
.bk-file__name { display: block; font-family: var(--bk-head); font-weight: 700; font-size: 0.84rem; color: var(--bk-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bk-file__size { font-size: 0.7rem; color: var(--bk-muted); }
.bk-file__bar { height: 4px; border-radius: 999px; background: rgba(27,28,30,0.08); margin-top: 6px; overflow: hidden; }
.bk-file__bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--bk-green), #7ee0a0); border-radius: 999px; transition: width 0.6s var(--bk-ease); }
.bk-file.is-done .bk-file__bar span { width: 100%; }
.bk-file__rm { border: 0; background: rgba(239,68,68,0.1); color: #ef4444; width: 30px; height: 30px; border-radius: 50%; cursor: pointer; transition: background 0.25s ease, transform 0.3s var(--bk-ease); }
.bk-file__rm:hover { background: #ef4444; color: #fff; transform: rotate(90deg); }
.bk-file.is-err { border-color: rgba(239,68,68,0.5); }
.bk-file.is-err .bk-file__size { color: #ef4444; }

/* links */
.bk-links { display: grid; gap: 8px; }
.bk-link { animation: bk-file-in 0.35s var(--bk-ease) both; }
.bk-link__rm { border: 0; background: transparent; color: #aab0ab; cursor: pointer; padding: 6px; transition: color 0.2s ease; }
.bk-link__rm:hover { color: #ef4444; }
.bk-addlink { justify-self: start; margin-top: 8px; border: 0; background: transparent; cursor: pointer; display: inline-flex; align-items: center; gap: 7px; font-family: var(--bk-head); font-weight: 800; font-size: 0.8rem; color: var(--bk-green-d); }
.bk-addlink i { width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: rgba(34,197,94,0.14); font-size: 0.6rem; }

.bk-actions__right { display: flex; gap: 10px; }

@media (max-width: 640px) {
  .bk-sec { padding: 16px 14px; }
  .bk-drop { padding: 24px 14px; }
  .bk-actions__right { width: 100%; flex-direction: column-reverse; }
  .bk-actions__right .bk-btn { width: 100%; justify-content: center; }
}