/* ═══════════════════════════════════════════════════════════════════════════
   BRIEF · Estilos para la página de brief de proyecto
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Progress bar ─────────────────────────────────────────────────────────── */
.brief-progress-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(26,24,21,.98);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(232,197,188,.08);
  padding: .9rem 5%;
}
.brief-progress-bar {
  height: 1px;
  background: rgba(255,255,255,.08);
  margin-bottom: .8rem;
  overflow: hidden;
}
.brief-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--salmon), #d4a89e);
  width: 20%;
  transition: width .6s cubic-bezier(.4,0,.2,1);
}
.brief-progress-steps {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.brief-progress-steps::-webkit-scrollbar { display: none; }
.brief-progress-steps .step {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: .82rem;
  letter-spacing: .12em;
  color: rgba(255,255,255,.2);
  white-space: nowrap;
  transition: color .35s;
  cursor: default;
}
.brief-progress-steps .step.active {
  color: var(--salmon);
  font-weight: 400;
}
.brief-progress-steps .step.done {
  color: rgba(255,255,255,.4);
}

/* ── Secciones transparentes para ver el fondo dinámico ──────────────────── */
.brief-page .info-hero,
.brief-page .brief-section,
.brief-page .info-section {
  background: transparent !important;
}

/* ── Hero luxury compacto ─────────────────────────────────────────────────── */
.brief-page .info-hero {
  padding: 6.5rem 5% 3rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.brief-page .info-hero-eyebrow {
  letter-spacing: .55em;
  font-size: .62rem;
  color: var(--salmon);
  opacity: .7;
}
.brief-page .info-hero-title {
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  margin-bottom: 1.2rem;
  letter-spacing: -.02em;
}
.brief-page .info-hero-desc {
  font-size: 1rem;
  max-width: 540px;
  color: rgba(255,255,255,.5);
  font-style: italic;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  font-weight: 300;
}

/* ── Section ──────────────────────────────────────────────────────────────── */
.brief-section {
  padding: 3rem 5% 6rem;
  min-height: 60vh;
}

/* ── Steps ────────────────────────────────────────────────────────────────── */
.brief-step {
  display: none;
  max-width: 860px;
  margin: 0 auto;
  animation: briefFadeIn .4s ease;
}
.brief-step.active { display: block; }

/* Salida del paso (transición tipo "pasar página") */
.brief-step.leaving {
  display: block;
  animation: briefLeave .26s cubic-bezier(.4,0,.2,1) forwards;
  pointer-events: none;
}
@keyframes briefLeave {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(-28px); }
}

@keyframes briefFadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Reveal escalonado de elementos al entrar al paso ─────────────────────── */
.brief-step.active .brief-step-header,
.brief-step.active .brief-fields > *,
.brief-step.active .brief-upload-area {
  opacity: 0;
  animation: briefReveal .7s cubic-bezier(.22,.61,.36,1) forwards;
}
.brief-step.active .brief-step-header   { animation-delay: .05s; }
.brief-step.active .brief-fields > *:nth-child(1) { animation-delay: .18s; }
.brief-step.active .brief-fields > *:nth-child(2) { animation-delay: .28s; }
.brief-step.active .brief-fields > *:nth-child(3) { animation-delay: .38s; }
.brief-step.active .brief-fields > *:nth-child(4) { animation-delay: .48s; }
.brief-step.active .brief-fields > *:nth-child(5) { animation-delay: .58s; }
.brief-step.active .brief-fields > *:nth-child(6) { animation-delay: .68s; }

@keyframes briefReveal {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Línea decorativa que se dibuja bajo el campo al enfocar */
.brief-fields .form-field {
  position: relative;
}
.brief-fields .form-field::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 1px;
  width: 0;
  background: var(--salmon);
  transition: width .5s cubic-bezier(.22,.61,.36,1);
  pointer-events: none;
}
.brief-fields .form-field:focus-within::after {
  width: 100%;
}

/* Respeta usuarios que prefieren menos movimiento */
@media (prefers-reduced-motion: reduce) {
  .brief-step.active .brief-step-header,
  .brief-step.active .brief-fields > *,
  .brief-step.active .brief-upload-area {
    animation: none;
    opacity: 1;
  }
}

/* ── Step header ──────────────────────────────────────────────────────────── */
.brief-step-header {
  margin-bottom: 3.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  position: relative;
}
.brief-step-header::before {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 3rem;
  height: 1px;
  background: var(--salmon);
}
.brief-step-num {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 4rem;
  color: var(--salmon);
  line-height: 1;
  margin-bottom: 1rem;
  opacity: .45;
  letter-spacing: -.02em;
}
.brief-step-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 1rem;
  letter-spacing: -.02em;
}
.brief-step-title em {
  font-style: italic;
  color: var(--salmon);
}
.brief-step-desc {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 1.15rem;
  font-weight: 300;
  color: rgba(255,255,255,.45);
  line-height: 1.6;
}

/* ── Capa de fondo dinámica por paso ──────────────────────────────────────── */
.brief-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 1.1s ease, transform 8s ease-out;
  pointer-events: none;
}
.brief-bg.show {
  opacity: 1;
  transform: scale(1);
}
/* Overlay oscuro para legibilidad — degradado cálido Geometrika */
.brief-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(35,33,30,.975) 0%, rgba(35,33,30,.965) 40%, rgba(35,33,30,.98) 100%),
    radial-gradient(ellipse at 70% 30%, rgba(232,197,188,.04), transparent 60%);
}

/* ── Selector de idioma visible en el brief ───────────────────────────────── */
/* (el motor i18n lo inyecta automáticamente en el nav) */

/* ── Fields ───────────────────────────────────────────────────────────────── */
.brief-fields {
  margin-bottom: 2.5rem;
}

/* Sobreescribir estilos de inputs para el brief — campos con fondo visible */
.brief-fields .form-field input,
.brief-fields .form-field textarea,
.brief-fields .form-field select {
  background: rgba(255,255,255,.04) !important;
  border: none !important;
  border-bottom: 1px solid rgba(255,255,255,.18) !important;
  border-left: 1px solid rgba(255,255,255,.06) !important;
  padding: 1.15rem 1.2rem !important;
  font-size: 1.12rem !important;
  font-family: 'DM Sans', sans-serif !important;
  font-weight: 300 !important;
  color: var(--white) !important;
  transition: border-color .35s, background .35s !important;
  border-radius: 0 !important;
}
.brief-fields .form-field input:focus,
.brief-fields .form-field textarea:focus,
.brief-fields .form-field select:focus {
  background: rgba(232,197,188,.05) !important;
  border-bottom-color: var(--salmon) !important;
  border-left-color: var(--salmon) !important;
  outline: none;
}
.brief-fields .form-field input::placeholder,
.brief-fields .form-field textarea::placeholder {
  color: rgba(255,255,255,.22) !important;
  font-size: 1.02rem !important;
  font-style: italic !important;
  font-family: 'Cormorant Garamond', serif !important;
}
.brief-fields .form-field select option {
  background: #1e1c1a;
  color: var(--white);
}
.brief-fields .form-field label {
  font-size: .92rem !important;
  letter-spacing: .01em !important;
  margin-bottom: .8rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4rem;
  font-family: 'Cormorant Garamond', serif !important;
  font-style: italic;
  font-weight: 400;
  text-transform: none !important;
  color: rgba(255,255,255,.85) !important;
}
.brief-fields .form-field textarea {
  min-height: 110px;
  line-height: 1.7 !important;
}

/* hint bajo el label */
.field-hint {
  display: block;
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: none;
  color: var(--mint);
  margin-top: .2rem;
  font-weight: 400;
}

/* ── Tooltip botón ⓘ ─────────────────────────────────────────────────────── */
.info-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 50%;
  color: rgba(255,255,255,.4);
  font-size: .6rem;
  font-family: 'DM Sans', sans-serif;
  letter-spacing: 0;
  text-transform: none;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  vertical-align: middle;
  margin-left: .35rem;
  position: relative;
  transition: border-color .25s, color .25s;
  flex-shrink: 0;
}
.info-btn:hover {
  border-color: var(--salmon);
  color: var(--salmon);
}
/* Tooltip bubble */
.info-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a1815;
  border: 1px solid rgba(232,197,188,.2);
  color: rgba(255,255,255,.85);
  font-family: 'DM Sans', sans-serif;
  font-size: .78rem;
  font-weight: 300;
  letter-spacing: .02em;
  text-transform: none;
  line-height: 1.5;
  padding: .75rem 1rem;
  width: 260px;
  border-radius: 2px;
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s;
  z-index: 200;
  white-space: normal;
  text-align: left;
}
.info-btn:hover::after,
.info-btn:focus::after {
  opacity: 1;
}
/* Flecha del tooltip */
.info-btn::before {
  content: '';
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(232,197,188,.2);
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s;
  z-index: 201;
}
.info-btn:hover::before,
.info-btn:focus::before {
  opacity: 1;
}

/* Badge "Opcional" */
.field-optional {
  display: inline-block;
  font-size: .58rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mint);
  border: 1px solid rgba(107,170,155,.3);
  padding: .15rem .5rem;
  margin-left: .5rem;
  vertical-align: middle;
  font-weight: 400;
  font-family: 'DM Sans', sans-serif;
}

/* ── Radio group ──────────────────────────────────────────────────────────── */
.brief-radio-group {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
  margin-top: .6rem;
}
.brief-radio {
  cursor: pointer;
  letter-spacing: 0;
  text-transform: none;
  font-size: 1rem;
  color: var(--white);
  padding: 0;
}
.brief-radio input { display: none; }
.brief-radio-box {
  display: inline-flex;
  align-items: center;
  padding: .65rem 1.4rem;
  border: 1px solid rgba(255,255,255,.2);
  font-family: 'DM Sans', sans-serif;
  font-size: .82rem;
  font-weight: 300;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: all .3s;
  cursor: pointer;
}
.brief-radio input:checked + .brief-radio-box {
  border-color: var(--salmon);
  color: var(--salmon);
  background: rgba(232,197,188,.07);
}
.brief-radio-box:hover {
  border-color: rgba(232,197,188,.5);
}

/* ── Upload area ──────────────────────────────────────────────────────────── */
.brief-upload-area {
  border: 1px dashed rgba(255,255,255,.2);
  padding: 3rem 2rem;
  text-align: center;
  transition: border-color .35s, background .35s;
  cursor: pointer;
  position: relative;
}
.brief-upload-area:hover,
.brief-upload-area.dragover {
  border-color: var(--salmon);
  background: rgba(232,197,188,.04);
}
.upload-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 1.2rem;
  color: var(--salmon);
  opacity: .7;
}
.upload-icon svg { width: 100%; height: 100%; }
.upload-label {
  font-family: 'DM Sans', sans-serif;
  font-size: .95rem;
  font-weight: 300;
  color: rgba(255,255,255,.7);
  margin-bottom: .5rem;
  line-height: 1.5;
}
.upload-label span {
  color: var(--salmon);
  text-decoration: underline;
  cursor: pointer;
}
.upload-hint {
  font-family: 'DM Sans', sans-serif;
  font-size: .72rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: rgba(255,255,255,.3);
}

/* ── Image preview grid ───────────────────────────────────────────────────── */
.brief-img-preview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: .8rem;
  margin-top: 1rem;
}
.img-preview-item {
  position: relative;
}
.img-preview-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
  border: 1px solid rgba(255,255,255,.1);
}
.img-preview-caption {
  width: 100%;
  margin-top: .4rem;
  padding: .35rem .5rem;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  color: var(--white);
  font-family: inherit;
  font-size: .72rem;
  outline: none;
  transition: border-color .25s;
}
.img-preview-caption::placeholder { color: rgba(255,255,255,.35); }
.img-preview-caption:focus { border-color: var(--salmon); }
.img-preview-remove {
  position: absolute;
  top: .4rem; right: .4rem;
  width: 22px; height: 22px;
  background: rgba(0,0,0,.7);
  border: none;
  color: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  transition: background .25s;
  border-radius: 0;
}
.img-preview-remove:hover { background: var(--salmon); color: var(--dark); }

/* ── Navigation buttons ───────────────────────────────────────────────────── */
.brief-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.brief-btn-next,
.brief-btn-submit {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: var(--salmon);
  color: var(--dark);
  border: 1px solid var(--salmon);
  padding: 1.05rem 2.2rem;
  font-family: 'DM Sans', sans-serif;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .28em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all .4s cubic-bezier(.4,0,.2,1);
}
.brief-btn-next:hover:not(:disabled),
.brief-btn-submit:hover:not(:disabled) {
  background: var(--rose-deep);
  border-color: var(--rose-deep);
  letter-spacing: .34em;
}
.brief-btn-next:disabled,
.brief-btn-submit:disabled {
  opacity: .5;
  cursor: not-allowed;
}
.brief-btn-back {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: transparent;
  color: rgba(255,255,255,.55);
  border: 1px solid rgba(255,255,255,.15);
  padding: 1.05rem 1.8rem;
  font-family: 'DM Sans', sans-serif;
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .22em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all .35s;
  text-decoration: none;
}
.brief-btn-back:hover {
  color: var(--white);
  border-color: rgba(255,255,255,.35);
}
.btn-arrow {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0;
}

/* ── Success screen ───────────────────────────────────────────────────────── */
.brief-success {
  max-width: 680px;
  margin: 2rem auto 0;
  text-align: center;
  padding: 3rem 1rem 5rem;
}
.success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 2rem;
  color: var(--mint);
}
.success-icon svg { width: 100%; height: 100%; }
.brief-success-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 1.2rem;
}
.brief-success-title em {
  font-style: italic;
  color: var(--salmon);
}
.brief-success-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.7;
  color: rgba(255,255,255,.6);
  margin-bottom: 2.5rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.brief-success-actions {
  display: inline-flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Validation error ─────────────────────────────────────────────────────── */
.form-field input.error,
.form-field textarea.error,
.form-field select.error {
  border-bottom-color: #e05c5c !important;
  border-left-color: rgba(224,92,92,.35) !important;
  background: rgba(224,92,92,.06) !important;
  animation: briefShake .35s cubic-bezier(.36,.07,.19,.97);
}
@keyframes briefShake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-5px); }
  60%      { transform: translateX(5px); }
  80%      { transform: translateX(-3px); }
}
.field-error {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-family: 'DM Sans', sans-serif;
  font-size: .72rem;
  color: #e05c5c;
  margin-top: .45rem;
  letter-spacing: .04em;
  font-weight: 400;
}
.field-error::before {
  content: '⚠';
  font-size: .75rem;
  line-height: 1;
  flex-shrink: 0;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .brief-section { padding: 3rem 1.4rem 5rem; }
  .brief-step-num { font-size: 2.2rem; }
  .brief-progress-steps { gap: 1rem; }
  .brief-img-preview { grid-template-columns: repeat(3, 1fr); }
  .brief-nav { flex-direction: column-reverse; gap: .8rem; width: 100%; }
  .brief-btn-next, .brief-btn-submit, .brief-btn-back {
    width: 100%;
    justify-content: center;
  }
  .brief-success-actions { flex-direction: column; width: 100%; }
  .brief-success-actions > * { width: 100%; justify-content: center; }
}