.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 1rem 2rem;

  border-radius: 999px;

  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;

  transition: var(--transition-fast);

  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #111;
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--color-accent-light);
}

.btn-secondary {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

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

/* =========================
   NAVBAR BASE TRANSITION
========================= */

.header {
    transition:
        top 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        padding 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        background 0.6s ease,
        backdrop-filter 0.6s ease,
        border-color 0.6s ease;
    will-change: top, padding;
}

.navbar {
    transition:
        max-width 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        height 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        border-radius 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        padding 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        background 0.6s ease,
        border-color 0.6s ease,
        gap 0.6s ease;
    will-change: max-width, border-radius, height;
}

.logo img {
    transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: height;
}

.logo-text {
    transition: font-size 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links {
    transition: gap 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links a {
    transition:
        font-size 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        color 0.3s ease;
}

.btn-primary.open-estimate {
    transition:
        opacity 0.4s ease,
        padding 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        font-size 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        width 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        background 0.3s ease;
    will-change: opacity, padding, font-size;
}

/* =========================
   NAVBAR CONTRACTED (scroll state)
========================= */

.header.navbar-contracted {
    top: 16px;
    padding: 0 24px;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-bottom: none !important;
}

.header.navbar-contracted .navbar {
    max-width: 860px;
    margin: 0 auto;
    height: 64px;

    background: rgba(13, 13, 13, 0.72);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);

    border: 1px solid rgba(198, 161, 110, 0.15);
    border-radius: 60px;

    padding: 0 1.5rem 0 1rem;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;

    /* no overflow:hidden — it kills the transition */
}

.header.navbar-contracted .logo img {
    height: 42px;
}

.header.navbar-contracted .logo-text {
    font-size: 1.5rem;
}

.header.navbar-contracted .nav-links {
    flex: 1;
    justify-content: center;
    gap: 1.4rem;
}

.header.navbar-contracted .nav-links a {
    font-size: 0.7rem;
}

.header.navbar-contracted .btn-primary.open-estimate {
    display: inline-flex !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    width: auto !important;
    padding: 0.55rem 1.1rem !important;
    font-size: 0.65rem !important;
    white-space: nowrap;
    flex-shrink: 0;
}

/* Mobile */
@media (max-width: 768px) {
    .header.navbar-contracted {
        top: 10px;
        padding: 0 16px;
    }

    .header.navbar-contracted .navbar {
        max-width: 100%;
        height: 56px;
        border-radius: 40px;
        padding: 0 1.25rem;
    }

    .header.navbar-contracted .btn-primary.open-estimate {
        display: none !important;
    }
}

/* =========================
   NAV DROPDOWN — PROJECTS
========================= */

.nav-item-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.nav-dropdown-trigger .nav-caret {
    width: 8px;
    height: 8px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0.7;
}

@media (hover: hover) {
    .nav-item-dropdown:hover .nav-caret {
        transform: rotate(225deg) translateY(1px);
    }
    .nav-item-dropdown:hover .nav-dropdown-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateX(-50%) translateY(0);
    }
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 18px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);

    min-width: 240px;
    padding: 10px;

    background: rgba(20, 20, 20, 0.92);
    backdrop-filter: blur(18px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transition:
        opacity 0.3s ease,
        transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
        visibility 0.3s ease;

    z-index: 1100;
}

.nav-item-dropdown.open .nav-caret {
    transform: rotate(225deg) translateY(1px);
}

.nav-item-dropdown.open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;

    font-size: var(--fs-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);

    transition: var(--transition-fast);
}

.nav-dropdown-menu a:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-dropdown-menu a::after {
    display: none;
}
}

/* comparison slider watermark needs higher z-index to clear the slider button */
.comparison-slider::after {
    z-index: 8;
    bottom: 14px;
    right: 14px;
}

/* studio-slide: watermark sits above the img but below nav buttons (z-index:10) */
.studio-slide {
    overflow: hidden;
}
.studio-slide::after {
    z-index: 6;
}

/* project-card watermark sits above the gradient overlay */
.project-card::after {
    z-index: 6;
    bottom: 14px;
    right: 14px;
}
.listing-card-image-wrapper,
.ba-img,
.studio-slide,
.hero-img-wrap,
.hero-image-wrapper,
.project-card,
.editorial-image-wrapper,
.comparison-slider,
.founder-image-wrapper {
    position: relative;
}

.listing-card-image-wrapper::after,
.ba-img::after,
.studio-slide::after,
.hero-img-wrap::after,
.hero-image-wrapper::after,
.project-card::after,
.editorial-image-wrapper::after,
.comparison-slider::after,
.founder-image-wrapper::after {
    content: "";
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 48px;
    height: 20px;
    background-image: url('../assets/images/logo.png');
    background-repeat: no-repeat;
    background-position: center right;
    background-size: contain;
    opacity: 0.48;
    pointer-events: none;
    z-index: 5;
    filter: drop-shadow(0px 1px 2px rgba(0,0,0,0.4));
}