/* ==========================================================================
   Conecta — Estilos del Receptor Visual (Módulo A)
   Paleta: corporativo azul/gris + acento naranja para urgencia
   ========================================================================== */

:root {
  --color-bg: #f1f5f9;
  --color-card: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;

  --color-primary: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-accent: #f97316;
  --color-accent-hover: #ea580c;

  --color-success: #16a34a;
  --color-error: #dc2626;

  --radius: 12px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.10);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ============ HERO ============ */
.hero {
  text-align: center;
  padding: 56px 0 36px;
}

.hero__brand {
  display: inline-block;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hero__title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text);
  margin: 0 0 12px;
  line-height: 1.2;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto;
}

/* ============ CARD / FORM ============ */
.card {
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 36px;
}

@media (max-width: 600px) {
  .card {
    padding: 24px 18px;
    border-radius: 8px;
  }
}

.form-section {
  margin-bottom: 36px;
}

.form-section:not(:first-child) {
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.form-section__header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.form-section__number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-section__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}

.form-section__hint {
  margin: 2px 0 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ============ FIELDS ============ */
.field {
  margin-bottom: 20px;
}

.field:last-child {
  margin-bottom: 0;
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-text);
  margin-bottom: 6px;
}

.field__hint {
  margin: 0 0 10px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.required {
  color: var(--color-accent);
}

input[type="text"],
input[type="url"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.96rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: #fff;
}

input:invalid:not(:placeholder-shown):not(:focus) {
  border-color: var(--color-error);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748b' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* ============ COMPETITOR LIST ============ */
.competitor-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 10px;
}

.competitor-row {
  display: flex;
  gap: 8px;
}

.competitor-row input {
  flex: 1;
}

.competitor-row__remove {
  flex-shrink: 0;
  width: 42px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: 8px;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.competitor-row__remove:hover {
  background: #fee2e2;
  color: var(--color-error);
}

/* ============ DROPZONE ============ */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone:hover,
.dropzone.dropzone--active {
  border-color: var(--color-primary-light);
  background: #eff6ff;
}

.dropzone__icon {
  color: var(--color-primary-light);
  margin-bottom: 8px;
}

.dropzone__text {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.dropzone__text strong {
  color: var(--color-primary);
}

.dropzone__filename {
  margin: 8px 0 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-success);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.35);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
}

.btn--primary:active {
  transform: scale(0.98);
}

.btn--primary:disabled {
  background: #cbd5e1;
  box-shadow: none;
  cursor: not-allowed;
}

.btn--large {
  width: 100%;
  padding: 16px 24px;
  font-size: 1.05rem;
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  background: var(--color-bg);
  border-color: var(--color-primary-light);
}

.btn--small {
  padding: 8px 14px;
  font-size: 0.85rem;
}

/* ============ FOOTER / STATUS ============ */
.form-footer {
  margin-top: 32px;
  text-align: center;
}

.form-footer__note {
  margin: 12px 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.form-status {
  margin-top: 16px;
  text-align: center;
  font-weight: 600;
  font-size: 0.92rem;
  min-height: 1.2em;
}

.form-status--success {
  color: var(--color-success);
}

.form-status--error {
  color: var(--color-error);
}

.footer {
  text-align: center;
  margin-top: 32px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}