/* ============================================
   COMPONENTS.CSS — Pam Tech Portfolio
   Reusable UI components
   ============================================ */

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(10, 12, 16, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: var(--z-sticky);
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="light"] .navbar {
  background: rgba(248, 250, 252, 0.92);
}

.navbar.scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--weight-bold);
  font-size: var(--text-md);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-snug);
}

.navbar__logo-mark {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-text-inverse);
  flex-shrink: 0;
  letter-spacing: 0;
  box-shadow: var(--glow-accent);
}

.navbar__logo-text span {
  color: var(--color-accent);
}

/* Nav links */
.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  letter-spacing: var(--tracking-wide);
}

.navbar__link:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-elevated);
}

.navbar__link.active {
  color: var(--color-accent);
}

.navbar__link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* Nav actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-accent);
  border-color: var(--color-border-accent);
  background: var(--color-accent-dim);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  padding: var(--space-2);
  transition: border-color var(--transition-fast);
}

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

.navbar__hamburger .bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.navbar__hamburger.open .bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.navbar__hamburger.open .bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar__hamburger.open .bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu */
.navbar__mobile-menu {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  transform: translateY(-110%);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
  z-index: calc(var(--z-sticky) - 1);
}

.navbar__mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
}

.navbar__mobile-link {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.navbar__mobile-link:hover,
.navbar__mobile-link.active {
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border-color: var(--color-border-accent);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.6rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  border-radius: var(--radius-md);
  letter-spacing: var(--tracking-wide);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Primary */
.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg-primary);
  border-color: var(--color-accent);
  box-shadow: 0 0 24px rgba(0, 191, 255, 0.2);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 32px rgba(0, 191, 255, 0.35);
  transform: translateY(-1px);
  color: var(--color-bg-primary);
}

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

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

.btn--outline:hover {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border-accent);
  transform: translateY(-1px);
}

/* Sizes */
.btn--sm {
  padding: 0.45rem 1.1rem;
  font-size: var(--text-xs);
}

.btn--lg {
  padding: 0.9rem 2rem;
  font-size: var(--text-base);
}

/* Loading state */
.btn--loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn--loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-left: var(--space-2);
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--glow-accent), var(--shadow-lg);
  transform: translateY(-2px);
}

.card--flat { box-shadow: none; }
.card--flat:hover { transform: none; }

/* ============================================
   BADGE / TAG
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  font-family: var(--font-mono);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.badge--accent {
  background: var(--color-accent-dim);
  border-color: var(--color-border-accent);
  color: var(--color-accent);
}

.badge--success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.badge--warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--color-warning);
}

/* ============================================
   TAG LIST
   ============================================ */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================
   PROJECT CARD
   ============================================ */
.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.project-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--glow-accent), var(--shadow-xl);
  transform: translateY(-4px);
}

.project-card__image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  background: var(--color-bg-tertiary);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image img {
  transform: scale(1.04);
}

.project-card__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.project-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-base);
  margin-bottom: var(--space-4);
  flex: 1;
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.project-card__actions {
  display: flex;
  gap: var(--space-3);
  margin-top: auto;
}

/* ============================================
   SKILL CARD
   ============================================ */
.skill-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.skill-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--glow-accent);
}

.skill-card__level {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.skill-card__level--proficient { color: var(--color-accent); }
.skill-card__level--working    { color: var(--color-success); }
.skill-card__level--learning   { color: var(--color-warning); }

.skill-card__name {
  font-size: var(--text-base);
  font-weight: var(--weight-semi);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.skill-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   SERVICE CARD
   ============================================ */
.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--glow-accent), var(--shadow-lg);
  transform: translateY(-3px);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.service-card__icon svg {
  width: 24px;
  height: 24px;
}

.service-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.service-card__desc {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-base);
}

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

.service-card__deliverable {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.service-card__deliverable::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================
   FORM
   ============================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
}

.form-label .required {
  color: var(--color-error);
  margin-left: 3px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  font-family: var(--font-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 191, 255, 0.1);
  outline: none;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: var(--leading-base);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238a93a8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  display: none;
}

.form-error.visible { display: block; }

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.char-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: right;
}

.char-count.near-limit { color: var(--color-warning); }
.char-count.at-limit   { color: var(--color-error); }

/* ============================================
   FILTER BUTTONS
   ============================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}

.filter-btn {
  padding: 0.5rem 1.2rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-primary);
}

.filter-btn:hover {
  border-color: var(--color-border-accent);
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

.filter-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand-name {
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-3);
}

.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-5);
}

.footer__heading {
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover { color: var(--color-accent); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  border-color: var(--color-border-accent);
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

.footer__social-link svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding-block: var(--space-20) var(--space-16);
  background: linear-gradient(
    to bottom,
    var(--color-bg-secondary),
    var(--color-bg-primary)
  );
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 60% 80% at 80% 50%,
    var(--color-accent-glow),
    transparent
  );
  pointer-events: none;
}

.page-hero__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.page-hero__title {
  margin-bottom: var(--space-4);
}

.page-hero__subtitle {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  max-width: 56ch;
  line-height: var(--leading-loose);
}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 42px;
  height: 42px;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-raised);
  box-shadow: 0 0 20px rgba(0, 191, 255, 0.3);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 30px rgba(0, 191, 255, 0.45);
}

.back-to-top svg { width: 20px; height: 20px; }

/* ============================================
   CIRCUIT DECORATION (SVG background element)
   ============================================ */
.circuit-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.035;
}

[data-theme="light"] .circuit-bg { opacity: 0.06; }

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 680px;
  max-height: 85vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal__body { padding: var(--space-6); }

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

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

/* ============================================
   STAT CARD
   ============================================ */
.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
  border-color: var(--color-border-accent);
  box-shadow: var(--glow-accent);
}

.stat-card__value {
  font-size: var(--text-3xl);
  font-weight: var(--weight-black);
  color: var(--color-accent);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   TIMELINE
   ============================================ */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    var(--color-accent),
    var(--color-border) 60%,
    transparent
  );
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-10);
}

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

.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 5px;
  width: 11px;
  height: 11px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 191, 255, 0.5);
}

.timeline__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  color: var(--color-accent);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-1);
}

.timeline__title {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.timeline__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
}

/* ============================================
   APPROACH STEP
   ============================================ */
.approach-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  position: relative;
}

.approach-step__num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-accent);
  flex-shrink: 0;
}

.approach-step__title {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.approach-step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  max-width: 18ch;
}

/* ============================================
   CAPABILITY STRIP
   ============================================ */
.capability-strip {
  background: var(--color-bg-secondary);
  border-block: 1px solid var(--color-border);
  padding-block: var(--space-8);
}

.capability-strip__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-6) var(--space-10);
}

.capability-strip__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
}

.capability-strip__item svg {
  color: var(--color-accent);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ============================================
   ALERT / NOTIFICATION
   ============================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid;
  font-size: var(--text-sm);
  line-height: var(--leading-base);
}

.alert svg { flex-shrink: 0; margin-top: 1px; }

.alert--success {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.alert--error {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--color-error);
}

/* ============================================
   TECH STACK PILL
   ============================================ */
.tech-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.tech-pill:hover {
  border-color: var(--color-border-accent);
  color: var(--color-accent);
}