/* =========================================================
   CONCEPTO INK — HEADER
   Always gold on black — the header is brand chrome and
   does not switch to pink on beauty pages.
========================================================= */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition:
        background 0.4s ease,
        backdrop-filter 0.4s ease,
        border-color 0.4s ease,
        box-shadow 0.4s ease;
}

.site-header.scrolled {
    background: rgba(8, 10, 12, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(201, 162, 74, 0.25);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.header-container {
    width: min(1200px, 92%);
    height: 100%;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

/* LOGO */

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 82px;
    height: 82px;
    text-decoration: none;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.logo-circle {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: radial-gradient(circle at center, #1a1d1f 0%, #0d1114 70%, #080a0c 100%);
    border: 1.5px solid var(--gold);
    box-shadow:
        0 0 0 2px rgba(201, 162, 74, 0.08),
        0 0 12px rgba(201, 162, 74, 0.25),
        inset 0 0 15px rgba(201, 162, 74, 0.12);
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.logo-circle::before {
    content: "";
    position: absolute;
    width: 66px;
    height: 66px;
    border-radius: 50%;
    border: 1px solid rgba(230, 199, 106, 0.35);
    pointer-events: none;
}

.logo-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease, filter 0.4s ease;
}

.logo:hover .logo-circle {
    transform: scale(1.04);
    border-color: var(--gold-light);
    box-shadow:
        0 0 0 2px rgba(201, 162, 74, 0.12),
        0 0 22px rgba(201, 162, 74, 0.45),
        inset 0 0 18px rgba(201, 162, 74, 0.15);
}

.site-header.scrolled .logo-circle {
    box-shadow:
        0 0 0 2px rgba(201, 162, 74, 0.1),
        0 0 16px rgba(201, 162, 74, 0.3),
        inset 0 0 15px rgba(201, 162, 74, 0.1);
}

/* DESKTOP NAV */

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-left: auto;
}

.desktop-nav a {
    position: relative;
    color: var(--white);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: 1.1px;
    padding: 10px 0;
    transition: color 0.3s ease;
}

.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 0;
    height: 1px;
    background: var(--gold-light);
    transition: width 0.3s ease;
}

.desktop-nav a:hover,
.desktop-nav a.active {
    color: var(--gold-light);
}

.desktop-nav a:hover::after,
.desktop-nav a.active::after {
    width: 100%;
}

/* RIGHT SECTION / BOOK BUTTON */

.right-section {
    display: flex;
    align-items: center;
    gap: 20px;
}

.book-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 125px;
    padding: 12px 20px;
    border: 1px solid var(--gold);
    color: var(--gold-light);
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.book-btn:hover {
    background: var(--gold);
    color: var(--black);
    box-shadow: 0 0 20px rgba(201, 162, 74, 0.25);
    transform: translateY(-2px);
}

/* HAMBURGER */

.hamburger {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(201, 162, 74, 0.5);
    background: transparent;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 0;
}

.hamburger span {
    display: block;
    width: 21px;
    height: 2px;
    background: var(--gold-light);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* MOBILE NAV */

.mobile-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    background: rgba(8, 10, 12, 0.98);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(201, 162, 74, 0.15);
    border-bottom: 1px solid rgba(201, 162, 74, 0.25);
    padding: 10px 6% 25px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-nav a {
    padding: 16px 5px;
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    letter-spacing: 1.5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.mobile-nav a:hover,
.mobile-nav a.active {
    color: var(--gold-light);
    padding-left: 12px;
}

.mobile-nav .mobile-book {
    margin-top: 18px;
    text-align: center;
    border: 1px solid var(--gold);
    color: var(--gold-light);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 2px;
}

.mobile-nav .mobile-book:hover {
    background: var(--gold);
    color: var(--black);
    padding-left: 5px;
}

@media (max-width: 900px) {
    .desktop-nav { gap: 16px; }
    .desktop-nav a { font-size: 11.5px; }
    .book-btn { min-width: 105px; padding: 10px 15px; font-size: 11px; }
}

@media (max-width: 768px) {
    :root { --header-height: 75px; }
    .site-header { height: var(--header-height); }
    .header-container { width: 90%; gap: 15px; }
    .logo { width: 60px; height: 60px; }
    .logo-circle { width: 54px; height: 54px; }
    .logo-circle::before { width: 46px; height: 46px; }
    .desktop-nav { display: none; }
    .right-section { gap: 10px; }
    .book-btn { min-width: auto; padding: 9px 13px; font-size: 10px; letter-spacing: 1px; }
    .hamburger { display: flex; }
}

@media (max-width: 420px) {
    .book-btn { padding: 8px 10px; }
    .hamburger { width: 38px; height: 38px; }
}