/* ============================================================
   COMPONENTS.CSS – Buttons, Burger
   ============================================================ */

/* ---- Button (Default) ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 18px;
  line-height: 1;
  padding: 13px 25px;
  border-radius: 13px;
  background-color: var(--brand-main);
  color: var(--brand-white);
  border: 1px solid transparent;
  transition: background-color 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--brand-secondary);
}

.btn:active {
  background-color: var(--brand-purple-links);
}

/* Outline variant */
.btn--outline {
  background-color: transparent;
  border-color: var(--brand-main);
  color: var(--brand-main);
}

.btn--outline:hover {
  background-color: var(--brand-secondary);
  border-color: var(--brand-secondary);
  color: var(--brand-white);
}

.btn--outline:active {
  background-color: var(--brand-purple-links);
  border-color: var(--brand-purple-links);
  color: var(--brand-white);
}

/* ---- Button Small ---- */
.btn-small {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1;
  padding: 8px 15px;
  border-radius: 10px;
  background-color: var(--brand-main);
  color: var(--brand-white);
  border: 1px solid transparent;
  width: 168px;
  transition: background-color 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-small:hover {
  background-color: var(--brand-secondary);
}

.btn-small:active {
  background-color: var(--brand-purple-links);
}

/* ---- Nav Button ---- */
.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1;
  height: 40px;
  padding: 0 15px;
  color: var(--brand-main);
  background: transparent;
  border: none;
  border-radius: 10px;
  transition: background-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.nav-btn:hover,
.nav-btn.is-current {
  background-color: rgba(204, 225, 218, 0.25);
  color: var(--brand-main);
}

.nav-btn:active,
.nav-btn.active {
  background-color: var(--brand-purple-links);
  color: var(--brand-white);
}

/* ---- Spark ---- */
.spark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---- Burger Button ---- */
.burger-btn {
  display: none; /* shown via hero.css at breakpoint */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 50px;
  height: 50px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.burger-line {
  display: block;
  width: 30px;
  height: 2px;
  background-color: var(--brand-main);
  border-radius: 2px;
  transform-origin: center center;
}

/* Close animation (only after user has opened once) */
.burger-btn.was-active .burger-line-top {
  animation: burgerTopClose 0.4s ease forwards;
}

.burger-btn.was-active:not(.burger--active) .burger-line-mid {
  opacity: 0;
  animation: burgerMidClose 0s 0.2s forwards;
}

.burger-btn.was-active .burger-line-bot {
  animation: burgerBotClose 0.4s ease forwards;
}

/* Burger → X */
.burger-btn.burger--active .burger-line-top {
  animation: burgerTopOpen 0.4s ease forwards;
}

.burger-btn.burger--active .burger-line-mid {
  animation: burgerMidOpen 0s 0.2s forwards;
}

@keyframes burgerMidOpen {
  from { opacity: 1; }
  to   { opacity: 0; }
}

.burger-btn.burger--active .burger-line-bot {
  animation: burgerBotOpen 0.4s ease forwards;
}

/* Open: move to center (0–50%), then rotate (50–100%) */
@keyframes burgerTopOpen {
  0%   { transform: translateY(0) rotate(0); }
  50%  { transform: translateY(10px) rotate(0); }
  100% { transform: translateY(10px) rotate(45deg); }
}

@keyframes burgerBotOpen {
  0%   { transform: translateY(0) rotate(0); }
  50%  { transform: translateY(-10px) rotate(0); }
  100% { transform: translateY(-10px) rotate(-45deg); }
}

@keyframes burgerMidClose {
  to { opacity: 1; }
}

/* Close: unrotate (0–50%), then move back (50–100%) */
@keyframes burgerTopClose {
  0%   { transform: translateY(10px) rotate(45deg); }
  50%  { transform: translateY(10px) rotate(0); }
  100% { transform: translateY(0) rotate(0); }
}

@keyframes burgerBotClose {
  0%   { transform: translateY(-10px) rotate(-45deg); }
  50%  { transform: translateY(-10px) rotate(0); }
  100% { transform: translateY(0) rotate(0); }
}