/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-body-sm);
  padding: 0.875rem 2rem;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--gradient-quantum);
  color: var(--color-white);
  border: none;
}

.btn--primary:hover {
  box-shadow: var(--shadow-violet);
}

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn--ghost:hover {
  border-color: var(--color-white);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.08);
}

.btn--ghost-dark {
  color: var(--color-obsidian);
  border-color: var(--color-gray-support);
}

.btn--ghost-dark:hover {
  border-color: var(--color-violet);
  color: var(--color-violet);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--fs-body);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

/* WhatsApp icon in button */
.btn .icon-whatsapp {
  width: 20px;
  height: 20px;
}

/* ============================================
   GRADIENT TEXT
   ============================================ */
.gradient-text {
  background: var(--gradient-quantum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   SEGMENTED LINE (Brand Signature)
   ============================================ */
.segmented-line {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 3px;
}

.segmented-line__violet {
  width: 60px;
  height: 3px;
  background: var(--color-violet);
  border-radius: 2px;
}

.segmented-line__white {
  width: 16px;
  height: 3px;
  background: var(--color-white);
  border-radius: 2px;
  opacity: 0.6;
}

.segmented-line__blue {
  width: 24px;
  height: 3px;
  background: var(--color-blue-electric);
  border-radius: 2px;
}

/* Light mode variant */
.section--light .segmented-line__white {
  background: var(--color-gray-support);
  opacity: 1;
}

.segmented-line--center {
  justify-content: center;
}

.segmented-line--lg .segmented-line__violet {
  width: 120px;
}

.segmented-line--lg .segmented-line__white {
  width: 24px;
}

.segmented-line--lg .segmented-line__blue {
  width: 40px;
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
  margin-bottom: var(--gap-xl);
}

.section-header--center {
  text-align: center;
}

.section-header--center .segmented-line {
  justify-content: center;
}

.overline {
  font-family: var(--font-heading);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-overline);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: var(--gap-sm);
  display: block;
}

.section--dark .overline {
  color: var(--color-violet);
}

.section--light .overline {
  color: var(--color-violet);
}

.section-header .section-title {
  font-size: var(--fs-h2);
  margin-bottom: var(--gap-sm);
}

.section-header .section-subtitle {
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  max-width: 640px;
  line-height: 1.7;
}

.section--dark .section-subtitle {
  color: var(--color-slate);
}

.section--light .section-subtitle {
  color: var(--color-slate);
}

.section-header--center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  padding: var(--gap-md);
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card--light {
  background: var(--color-white);
  border: 1px solid var(--color-gray-support);
  position: relative;
  overflow: hidden;
}

.card--light::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-quantum);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.card--light:hover {
  border-color: rgba(159, 51, 255, 0.15);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.card--light:hover::before {
  transform: scaleX(1);
}

.card--dark {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card--dark:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(159, 51, 255, 0.2);
}

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--gap-sm);
}

.card__title {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h4);
  margin-bottom: var(--gap-xs);
}

.card__text {
  font-size: var(--fs-body-sm);
  line-height: 1.7;
  color: var(--color-slate);
}

/* ============================================
   DIAMOND BULLET
   ============================================ */
.diamond-bullet {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.diamond-bullet::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--gradient-quantum);
  transform: rotate(45deg);
  flex-shrink: 0;
  border-radius: 1px;
}

.diamond-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ============================================
   STAT CARD
   ============================================ */
.stat {
  text-align: center;
  padding: var(--gap-md);
}

.stat__number {
  font-family: var(--font-heading);
  font-weight: var(--fw-extrabold);
  font-size: var(--fs-stat);
  line-height: 1;
  margin-bottom: 0.5rem;
  background: var(--gradient-quantum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  font-size: var(--fs-body-sm);
  color: var(--color-slate);
}

.stat .segmented-line {
  justify-content: center;
  margin-top: 1rem;
}

/* ============================================
   TESTIMONIAL CARD
   ============================================ */
.testimonial {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--gap-md);
  position: relative;
  border: 1px solid var(--color-gray-support);
  overflow: hidden;
}

.testimonial::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-quantum);
}

.testimonial__quote-mark {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: var(--fw-extrabold);
  line-height: 1;
  background: var(--gradient-quantum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: -0.5rem;
}

.testimonial__text {
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--color-obsidian);
  margin-bottom: var(--gap-md);
  font-style: italic;
}

.testimonial__divider {
  height: 1px;
  background: var(--color-gray-support);
  margin-bottom: var(--gap-sm);
}

.testimonial__author {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-body-sm);
}

.testimonial__role {
  font-size: var(--fs-overline);
  color: var(--color-slate);
}

/* ============================================
   FORM
   ============================================ */
.form-group {
  margin-bottom: var(--gap-sm);
}

.form-label {
  display: block;
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  margin-bottom: 0.375rem;
  color: var(--color-slate);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-size: var(--fs-body-sm);
  transition: border-color var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-violet);
  box-shadow: 0 0 0 3px rgba(159, 51, 255, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select option {
  background: var(--color-obsidian);
  color: var(--color-white);
}

/* ============================================
   PHASE STEP (Methodology)
   ============================================ */
.phase {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--gap-md);
  border-top: 3px solid transparent;
  position: relative;
  box-shadow: var(--shadow-card);
}

.phase:nth-child(1) {
  border-top-color: var(--color-violet);
}

.phase:nth-child(2) {
  border-top-color: var(--color-purple-deep);
}

.phase:nth-child(3) {
  border-top-color: var(--color-blue-electric);
}

.phase__label {
  font-family: var(--font-heading);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-overline);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-violet);
  margin-bottom: 0.5rem;
}

.phase__title {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h3);
  margin-bottom: 0.75rem;
  color: var(--color-obsidian);
}

.phase__text {
  font-size: var(--fs-body-sm);
  color: var(--color-slate);
  line-height: 1.7;
  margin-bottom: var(--gap-sm);
}

.phase__result {
  background: var(--color-cool-white);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: var(--fs-body-sm);
  border-left: 3px solid var(--color-cyan);
}

.phase__result strong {
  color: var(--color-obsidian);
}