/* ════════════════════════════════════════════════════════════════
   MARCYAN — Formulario de Brief de Cliente
   Estilos scopeados bajo .brief-page para no afectar el resto
   del sitio. Reutiliza tokens de variables.css.
   ════════════════════════════════════════════════════════════════ */

.brief-page {
  /* Tokens locales (derivados del design system principal) */
  --bf-card:          #141414;
  --bf-card-hover:    #1c1c1c;
  --bf-border:        rgba(200, 169, 110, 0.18);
  --bf-border-strong: rgba(200, 169, 110, 0.40);
  --bf-radius:        6px;
  --bf-text-warm:     var(--white);
  --bf-text-soft:     rgba(240, 237, 232, 0.70);
  --bf-text-mute:     #6b6b6b;
  --bf-gold-light:    #dfc08a;
  --bf-success:       var(--accent2);
  --bf-error:         #e07b7b;

  margin: 0;
  background: var(--black);
  color: var(--bf-text-warm);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

.brief-page *,
.brief-page *::before,
.brief-page *::after {
  box-sizing: border-box;
}

/* ═══ HEADER ═══════════════════════════════════════════════════ */
.brief-header {
  background: var(--bf-card);
  border-bottom: 1px solid var(--bf-border-strong);
  padding: 2.5rem 3rem 2rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.brief-logo-area {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brief-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  text-decoration: none;
  transition: opacity var(--ease-fast);
}

.brief-logo:hover { opacity: 0.85; }

.brief-logo span {
  font-weight: 300;
  font-style: italic;
  color: var(--bf-gold-light);
  font-size: 1.6rem;
}

.brief-tagline {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--bf-text-mute);
  text-transform: uppercase;
  margin-top: 0.15rem;
}

.brief-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: flex-end;
}

.brief-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent2);
  background: rgba(79, 195, 161, 0.08);
  border: 1px solid rgba(79, 195, 161, 0.25);
  padding: 0.3rem 0.8rem;
  border-radius: 2px;
}

.brief-meta-fields {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: flex-end;
}

.brief-meta-field {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brief-meta-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--bf-text-mute);
  text-transform: uppercase;
}

.brief-meta-input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--bf-border-strong);
  color: var(--bf-text-warm);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 300;
  padding: 0.15rem 0.25rem;
  width: 160px;
  outline: none;
  cursor: default;
}

.brief-meta-input::placeholder {
  color: var(--bf-text-mute);
  font-style: italic;
}

.brief-meta-input:focus { border-bottom-color: var(--accent); }

/* ═══ MAIN ═════════════════════════════════════════════════════ */
.brief-main {
  padding: 2.5rem 3rem 4rem;
  max-width: 920px;
  margin: 0 auto;
}

/* ═══ INTRO ════════════════════════════════════════════════════ */
.brief-intro {
  background: linear-gradient(135deg,
              rgba(200, 169, 110, 0.06) 0%,
              rgba(79, 195, 161, 0.04) 100%);
  border: 1px solid var(--bf-border);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.5rem;
  border-radius: var(--bf-radius);
  margin-bottom: 2.5rem;
}

.brief-intro p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 300;
  font-style: italic;
  color: rgba(240, 237, 232, 0.78);
  line-height: 1.5;
}

/* ═══ SECTION ══════════════════════════════════════════════════ */
.brief-section { margin-bottom: 2.5rem; }

.brief-section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--bf-border);
}

.brief-section-num {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 0.1em;
  min-width: 22px;
}

.brief-section-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--bf-text-warm);
  text-transform: uppercase;
  margin: 0;
}

.brief-section-line {
  flex: 1;
  height: 1px;
  background: var(--bf-border);
}

/* ═══ GRID ═════════════════════════════════════════════════════ */
.brief-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 2rem;
}

.brief-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem 2rem;
}

.brief-span-2 { grid-column: span 2; }

/* ═══ FIELD ════════════════════════════════════════════════════ */
.brief-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brief-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}

.brief-label.is-teal { color: var(--accent2); }

.brief-input {
  background: var(--bf-card);
  border: 1px solid var(--bf-border);
  border-radius: var(--bf-radius);
  color: var(--bf-text-warm);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  padding: 0.6rem 0.85rem;
  width: 100%;
  outline: none;
  transition: border-color var(--ease-fast), background var(--ease-fast);
}

.brief-input:focus {
  border-color: var(--bf-gold-light);
  background: var(--bf-card-hover);
}

.brief-input::placeholder {
  color: #4a4a4a;
  font-style: italic;
}

textarea.brief-input {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
  font-family: var(--font-body);
}

textarea.brief-input.brief-tall   { min-height: 110px; }
textarea.brief-input.brief-taller { min-height: 130px; }

/* ═══ CHECKBOX GROUP ═══════════════════════════════════════════ */
.brief-check-group {
  background: var(--bf-card);
  border: 1px solid var(--bf-border);
  border-radius: var(--bf-radius);
  padding: 1rem 1.25rem;
  margin-top: 0.35rem;
}

.brief-check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
}

.brief-check-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
  transition: background var(--ease-fast);
  user-select: none;
  font-size: 13px;
  color: var(--bf-text-soft);
}

.brief-check-item:hover { background: rgba(200, 169, 110, 0.06); }

.brief-check-item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border: 1px solid var(--bf-border-strong);
  border-radius: 2px;
  background: transparent;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all var(--ease-fast);
  margin: 0;
}

.brief-check-item input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.brief-check-item input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 1px;
  width: 5px;
  height: 8px;
  border: 2px solid var(--black);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.brief-check-item:has(input:checked) { color: var(--bf-text-warm); }

/* ═══ RADIO GROUP ══════════════════════════════════════════════ */
.brief-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.brief-radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--bf-border-strong);
  border-radius: 100px;
  cursor: pointer;
  font-size: 13px;
  color: var(--bf-text-soft);
  transition: all var(--ease-fast);
  user-select: none;
  background: transparent;
}

.brief-radio-pill:hover {
  border-color: var(--accent);
  color: var(--bf-text-warm);
}

.brief-radio-pill input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.brief-radio-pill:has(input:checked) {
  background: rgba(200, 169, 110, 0.12);
  border-color: var(--accent);
  color: var(--bf-gold-light);
}

/* ═══ HONEYPOT ═════════════════════════════════════════════════ */
.brief-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ═══ SUBMIT ═══════════════════════════════════════════════════ */
.brief-submit-bar {
  margin-top: 2.5rem;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  align-items: center;
}

.brief-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 200px;
  padding: 0.95rem 2.2rem;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--bf-radius);
  color: var(--black);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--ease-fast);
  font-weight: 700;
}

.brief-submit-btn:hover {
  background: var(--bf-gold-light);
  border-color: var(--bf-gold-light);
}

.brief-submit-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.brief-submit-btn .brief-submit-loading { display: none; }
.brief-submit-btn.is-loading .brief-submit-label   { display: none; }
.brief-submit-btn.is-loading .brief-submit-loading { display: inline; }

/* ═══ MENSAJES (success / error) ═══════════════════════════════ */
.brief-success,
.brief-error {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--bf-radius);
  border: 1px solid var(--bf-border);
}

.brief-success {
  background: rgba(79, 195, 161, 0.08);
  border-color: rgba(79, 195, 161, 0.30);
}

.brief-success h3 {
  margin: 0 0 0.5rem 0;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent2);
  text-transform: uppercase;
}

.brief-success p {
  margin: 0;
  color: var(--bf-text-soft);
  font-size: 14px;
}

.brief-success-id {
  font-family: var(--font-mono);
  letter-spacing: 0.15em;
  color: var(--accent);
}

.brief-error {
  background: rgba(224, 123, 123, 0.06);
  border-color: rgba(224, 123, 123, 0.35);
}

.brief-error p {
  margin: 0;
  color: var(--bf-error);
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ═══ FOOTER ═══════════════════════════════════════════════════ */
.brief-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--bf-border-strong);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  flex-wrap: wrap;
}

.brief-footer-note {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--bf-text-mute);
  max-width: 380px;
  line-height: 1.5;
}

.brief-footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-items: flex-end;
}

.brief-footer-brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
}

.brief-footer-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--bf-text-mute);
  text-transform: uppercase;
}

/* ═══ AUTOFILL (evita amarillo del navegador) ═════════════════ */
.brief-input:-webkit-autofill,
.brief-input:-webkit-autofill:hover,
.brief-input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--bf-text-warm);
  -webkit-box-shadow: 0 0 0 30px var(--bf-card) inset;
  caret-color: var(--bf-text-warm);
  transition: background-color 99999s ease-out 0s;
}

/* ═══ RESPONSIVE ═══════════════════════════════════════════════ */
@media (max-width: 760px) {
  .brief-header  { padding: 1.5rem; flex-direction: column; gap: 1.25rem; }
  .brief-main    { padding: 1.5rem; }
  .brief-grid-2,
  .brief-grid-3  { grid-template-columns: 1fr; }
  .brief-span-2  { grid-column: span 1; }
  .brief-meta    { align-items: flex-start; text-align: left; }
  .brief-meta-fields { align-items: flex-start; }
  .brief-meta-input  { width: 100%; max-width: 280px; }
  .brief-footer       { flex-direction: column; align-items: flex-start; }
  .brief-footer-contact { align-items: flex-start; }
  .brief-submit-bar  { justify-content: stretch; }
  .brief-submit-btn  { width: 100%; }
}