/* ------------------------------------------------------------------ */
/* Buttons                                                            */
/* ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.btn--primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

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

.btn--secondary {
  border: 2px solid var(--accent-strong);
  color: var(--text);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.icon-btn:hover {
  color: var(--text);
  background: var(--bg-sunken);
}

.icon-btn__label {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ------------------------------------------------------------------ */
/* Hero decoration                                                    */
/* ------------------------------------------------------------------ */
.hero__decor {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

[data-theme='light'] .hero__wave {
  display: none;
}

.hero__wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  width: 100%;
  height: 140px;
  opacity: 0.9;
}

.hero__kawaii-divider {
  display: none;
}

[data-theme='light'] .hero__kawaii-divider {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  width: 100%;
  margin: 0;
  overflow: hidden;
  white-space: nowrap;
  text-align: center;
  letter-spacing: 0.4em;
  font-size: 1.1rem;
  color: var(--color-kawaii-primary);
  opacity: 0.6;
}

.decor-icon {
  position: absolute;
  --icon-size: 34px;
  color: var(--accent-strong);
  opacity: 0.22;
}

[data-theme='dark'] .decor-icon {
  opacity: 0.3;
}

.decor-icon--1 { top: 8%;  left: 4%;  --icon-size: 46px; }
.decor-icon--2 { top: 66%; left: 10%; }
.decor-icon--3 { top: 18%; left: 88%; }
.decor-icon--4 { top: 76%; left: 82%; }
.decor-icon--5 { top: 40%; left: 94%; --icon-size: 26px; }
.decor-icon--6 { top: 12%; left: 66%; --icon-size: 28px; }
.decor-icon--7 { top: 55%; left: 3%;  --icon-size: 26px; }
.decor-icon--8 { top: 30%; left: 20%; --icon-size: 24px; }

@media (max-width: 780px) {
  .decor-icon { display: none; }
}

/* ------------------------------------------------------------------ */
/* Terminal window                                                    */
/* ------------------------------------------------------------------ */
.terminal {
  background: var(--terminal-bg);
  color: var(--terminal-text);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  max-width: 760px;
}

.terminal__titlebar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.06);
}

.terminal__dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.terminal__dot--red { background: #ff5f56; }
.terminal__dot--yellow { background: #ffbd2e; }
.terminal__dot--green { background: #27c93f; }

.terminal__titlebar-text {
  margin-left: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: rgba(237, 230, 251, 0.6);
}

.terminal__body {
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.92rem;
}

.terminal__line {
  margin-top: var(--space-3);
}

.terminal__line:first-child {
  margin-top: 0;
}

.terminal__prompt {
  color: var(--accent-strong);
  font-weight: 700;
}

.terminal__output {
  margin-top: var(--space-1);
  color: rgba(237, 230, 251, 0.85);
  padding-left: var(--space-3);
  border-left: 2px solid rgba(237, 230, 251, 0.15);
}

.terminal__output--highlight {
  color: var(--accent-strong);
}

.terminal__line--cursor {
  display: flex;
  align-items: center;
}

.terminal__cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  margin-left: 0.4em;
  background: var(--accent-strong);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ------------------------------------------------------------------ */
/* Tag list (skills, interests)                                       */
/* ------------------------------------------------------------------ */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.tag {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  color: var(--text);
}

[data-theme='dark'] .tag {
  background: rgba(255, 255, 255, 0.06);
}

/* about section renders its interests as tags inside the dark terminal */
.terminal .tag {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--terminal-text);
}

/* ------------------------------------------------------------------ */
/* Cards (skills categories, education)                               */
/* ------------------------------------------------------------------ */
.card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

/* Kawaii touch */
[data-theme='light'] .card::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 8px;
  width: 14px;
  height: 14px;
  background-color: var(--color-kawaii-primary);
  opacity: 0.8;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 20.3l-1.4-1.3C5.4 14.6 2 11.5 2 7.7 2 4.6 4.4 2.2 7.5 2.2c1.7 0 3.4.8 4.5 2.1 1.1-1.3 2.8-2.1 4.5-2.1 3.1 0 5.5 2.4 5.5 5.5 0 3.8-3.4 6.9-8.6 11.3L12 20.3z'/%3E%3C/svg%3E") center / contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 20.3l-1.4-1.3C5.4 14.6 2 11.5 2 7.7 2 4.6 4.4 2.2 7.5 2.2c1.7 0 3.4.8 4.5 2.1 1.1-1.3 2.8-2.1 4.5-2.1 3.1 0 5.5 2.4 5.5 5.5 0 3.8-3.4 6.9-8.6 11.3L12 20.3z'/%3E%3C/svg%3E") center / contain no-repeat;
}

.skills__category {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.education__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}

.education__school {
  font-size: 1.05rem;
  font-weight: 700;
}

.education__period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.education__program {
  margin-top: var(--space-1);
  font-weight: 600;
  color: var(--accent-strong);
}

.education__description {
  margin-top: var(--space-2);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.cert-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-2) var(--space-4);
}

.cert-list__item {
  position: relative;
  padding-left: var(--space-4);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.cert-list__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent-gradient);
}

/* ------------------------------------------------------------------ */
/* Timeline (experience)                                              */
/* ------------------------------------------------------------------ */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding-left: var(--space-4);
  border-left: 2px solid var(--border);
}

.timeline__item {
  position: relative;
}

.timeline__marker {
  position: absolute;
  left: calc(-1 * var(--space-4) - 6px);
  top: 0.4rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: 0 0 0 4px var(--bg);
}

.timeline__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
}

.timeline__role {
  font-size: 1.1rem;
  font-weight: 700;
}

.timeline__company {
  font-weight: 600;
  color: var(--accent-strong);
}

.timeline__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.timeline__bullets {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.timeline__bullets li {
  position: relative;
  padding-left: var(--space-3);
  color: var(--text-muted);
}

.timeline__bullets li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent-strong);
  font-weight: 700;
}

/* ------------------------------------------------------------------ */
/* Contact links                                                      */
/* ------------------------------------------------------------------ */
.contact__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  font-weight: 600;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.contact__link:hover {
  border-color: var(--accent-strong);
  transform: translateY(-2px);
}

/* ------------------------------------------------------------------ */
/* Easter egg (Konami code)                                           */
/* ------------------------------------------------------------------ */
.easter-egg {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.easter-egg[hidden] {
  display: none;
}

.easter-egg__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(13, 7, 21, 0.72);
  backdrop-filter: blur(4px);
}

.easter-egg__card {
  position: relative;
  z-index: 1;
  max-width: 380px;
  width: 100%;
  text-align: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4) var(--space-4);
  box-shadow: var(--shadow-md);
  animation: easter-egg-pop 320ms ease;
}

@keyframes easter-egg-pop {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.easter-egg__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.easter-egg__close:hover {
  color: var(--text);
}

.easter-egg__hint {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--accent-strong);
  text-transform: uppercase;
}

.easter-egg__title {
  margin-top: var(--space-1);
  font-size: 1.3rem;
  font-weight: 800;
}

.easter-egg__message {
  margin-top: var(--space-2);
  color: var(--text-muted);
}

.easter-egg__sparkle {
  position: absolute;
  --icon-size: 18px;
  color: var(--color-magenta-500);
  animation: easter-egg-sparkle 2.4s ease-in-out infinite;
}

.easter-egg__sparkle--1 {
  top: 18px;
  left: 28px;
  animation-delay: 0.4s;
}

.easter-egg__sparkle--2 {
  bottom: 24px;
  right: 24px;
  --icon-size: 12px;
  animation-delay: 1.1s;
}

@keyframes easter-egg-sparkle {
  0%, 100% { opacity: 0.25; transform: scale(0.8) rotate(0deg); }
  50% { opacity: 1; transform: scale(1.15) rotate(15deg); }
}

@media (prefers-reduced-motion: reduce) {
  .easter-egg__sparkle,
  .easter-egg__card {
    animation: none;
  }
}

/* ------------------------------------------------------------------ */
/* Starfield (ambient purple night background, dark theme only)       */
/* ------------------------------------------------------------------ */
.starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 500ms ease;
}

[data-theme='dark'] .starfield {
  opacity: 1;
}

.starfield__layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  background: transparent;
  border-radius: 50%;
}

.starfield__layer--small {
  animation: starfield-twinkle 4s ease-in-out infinite;
}

.starfield__layer--medium {
  width: 2px;
  height: 2px;
  animation: starfield-twinkle 6s ease-in-out infinite 1s;
}

.starfield__layer--large {
  width: 3px;
  height: 3px;
  animation: starfield-twinkle 5s ease-in-out infinite 2s;
}

@keyframes starfield-twinkle {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

.starfield__shooting-star {
  position: absolute;
  top: 14%;
  left: -5%;
  width: 3px;
  height: 3px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 6px 2px rgba(255, 255, 255, 0.8);
  opacity: 0;
  animation: starfield-shoot 9s linear infinite;
  animation-delay: 3s;
}

@keyframes starfield-shoot {
  0% { transform: translate(0, 0); opacity: 0; }
  2% { opacity: 1; }
  9% { transform: translate(70vw, 34vh); opacity: 0; }
  100% { transform: translate(70vw, 34vh); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .starfield__layer,
  .starfield__shooting-star {
    animation: none;
  }

  .starfield__layer {
    opacity: 0.75;
  }
}

/* ------------------------------------------------------------------ */
/* Corner mascot                                                      */
/* ------------------------------------------------------------------ */
.mascot {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
}

.mascot__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  padding: var(--space-1);
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  animation: mascot-bob 3.4s ease-in-out infinite;
}

.mascot__button:hover {
  border-color: var(--accent-strong);
}

.mascot__avatar {
  --icon-size: 32px;
  background: var(--accent-gradient);
}

@keyframes mascot-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.mascot__bubble {
  max-width: 220px;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  animation: mascot-pop 200ms ease;
}

.mascot__bubble[hidden] {
  display: none;
}

@keyframes mascot-pop {
  from { transform: scale(0.85) translateY(4px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

@media (max-width: 600px) {
  .mascot__button {
    width: 46px;
    height: 46px;
  }

  .mascot__avatar {
    --icon-size: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mascot__button {
    animation: none;
  }
}