/* ═══════════════════════════════════════════════════════════════
   say.work — Components
   Buttons, cards, navigation, badges, and reusable components.
   ═══════════════════════════════════════════════════════════════ */

/* ── Buttons ──────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.75rem;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    transform var(--transition-fast),
    box-shadow var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

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

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

/* Primary */
.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(25, 118, 210, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 6px 25px rgba(25, 118, 210, 0.45);
}

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

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

/* Outline Primary (blue border + text, no fill) */
.btn--outline-primary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: none;
}

.btn--outline-primary:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
  box-shadow: none;
}

/* Ghost (on dark backgrounds) */
.btn--ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

/* Small */
.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-small);
}

/* Large */
.btn--lg {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-body-lg);
}

/* ── Cards ────────────────────────────────────────────────────── */

.card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
  font-variation-settings: 'wght' 200;
  transition: color var(--transition-base);
}

.card:hover .card__icon {
  color: var(--color-primary);
}

.card__title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.card__text {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  transition: gap var(--transition-base), color var(--transition-base);
}

.card__link:hover {
  color: var(--color-accent);
  gap: 0.6rem;
}

.card__link .arrow {
  transition: transform var(--transition-base);
}

.card__link:hover .arrow {
  transform: translateX(3px);
}

/* ── Navigation ───────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-base);
}

[data-theme="dark"] .nav {
  background: rgba(15, 23, 42, 0.85);
}

.nav.scrolled {
  box-shadow: var(--shadow-md);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--max-width-wide);
  margin-inline: auto;
  padding-inline: var(--spacing-md);
  position: relative;
  z-index: 1002;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  height: 36px;
  text-decoration: none;
}

.nav__logo img {
  height: 100%;
  width: auto;
}

.nav__tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  border-left: 1px solid var(--color-border);
  padding-left: var(--spacing-sm);
  line-height: 1.3;
}

/* Logo theme switching */
.logo-dark {
  display: none;
}

[data-theme="dark"] .logo-light {
  display: none;
}

[data-theme="dark"] .logo-dark {
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__link {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border: none;
  font-size: 1.25rem;
}

.theme-toggle:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

/* Mobile menu button */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px;
}

.nav__burger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__burger.active span:nth-child(2) {
  opacity: 0;
}

.nav__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu panel */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  padding: var(--spacing-lg) var(--spacing-lg);
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  z-index: 1001;
  overflow-y: auto;
}

.nav__mobile.open {
  display: flex;
}

.nav:has(.nav__mobile.open) {
  height: 100vh;
}

.nav__mobile .nav__link {
  font-size: var(--font-size-body-lg);
  padding: var(--spacing-sm) 0;
  text-align: center;
}

.nav__mobile .btn {
  margin-top: var(--spacing-sm);
}

/* ── Badge / Tag ──────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.85rem;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--accent {
  background: rgba(63, 100, 255, 0.1);
  color: var(--color-accent);
}

/* ── Comparison table ─────────────────────────────────────────── */

.comparison {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.comparison th,
.comparison td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.comparison th {
  background: var(--color-bg-alt);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison td {
  font-size: var(--font-size-body);
}

.comparison tr:last-child td {
  border-bottom: none;
}

.comparison .check {
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

.comparison .cross {
  color: var(--color-error);
}

.comparison .extra-cost {
  color: var(--color-warning);
  font-size: var(--font-size-small);
}

/* ── Responsive ───────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav__links,
  .nav__actions .btn {
    display: none;
  }

  .nav__tagline {
    display: none;
  }

  .nav__burger {
    display: flex;
  }

  .nav__actions {
    gap: var(--spacing-xs);
  }

  .btn--lg {
    padding: 0.65rem 1.5rem;
    font-size: var(--font-size-small);
  }
}

/* ── Language Switcher ────────────────────────────────────────── */

.nav__lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.65rem;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  letter-spacing: 0.04em;
  line-height: 1;
}

.nav__lang-switch:hover {
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-color: var(--color-primary);
}


/* ── Scroll to Top ────────────────────────────────────────────── */

.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-base),
              visibility var(--transition-base),
              transform var(--transition-base),
              background var(--transition-fast);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.scroll-top .material-symbols-sharp {
  font-size: 1.5rem;
}