/* ==========================================================================
   COMPONENTS — header, overlay menu, buttons, form fields.
   ========================================================================== */

/* ---- Site header ---- */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    /* Match section content: gutter on narrow viewports, --container
       edges once the measure is centered (same as hero / footer). */
    padding-inline: max(var(--gutter), calc((100% - var(--container)) / 2));
    transition: transform var(--dur-med) var(--ease-out), background-color var(--dur-med) var(--ease-out);
}
.site-header.is-scrolled {
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--line);
}
.site-header.is-hidden { transform: translateY(-100%); }

.site-header__logo img { width: clamp(8rem, 12vw, 10.25rem); height: auto; }
.site-header__logo-mark--on-dark { display: none; }

/* Header on dark: swaps while overlay menu is open */
body.menu-open .site-header {
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}
body.menu-open .site-header__logo-mark { display: none; }
body.menu-open .site-header__logo-mark.site-header__logo-mark--on-dark { display: block; }

/* ---- Menu toggle ---- */
.menu-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.25rem;
    background: none;
    border: 0;
    cursor: pointer;
    font-weight: 700;
    font-size: var(--text-small);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.menu-toggle__icon {
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    width: 26px;
}
.menu-toggle__icon i {
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--dur-fast) var(--ease-in-out), width var(--dur-fast) var(--ease-in-out);
    transform-origin: center;
}
.menu-toggle__icon i:last-child { width: 70%; align-self: flex-end; }
.menu-toggle:hover .menu-toggle__icon i:last-child { width: 100%; }

body.menu-open .menu-toggle { color: var(--paper); }
body.menu-open .menu-toggle__icon i:first-child { transform: translateY(3.5px) rotate(45deg); }
body.menu-open .menu-toggle__icon i:last-child { width: 100%; transform: translateY(-3.5px) rotate(-45deg); }

/* ---- Overlay menu ---- */
.site-menu {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-block: calc(var(--header-h) + var(--space-md)) var(--space-lg);
    /* Same content column as the header / sections: gutter on small
       viewports, --container edges once the measure is centered. */
    padding-inline: max(var(--gutter), calc((100% - var(--container)) / 2));
    background: var(--deep);
    color: var(--paper);
    /* opened/closed via GSAP clip-path; this is the resting open state */
}
.site-menu[hidden] { display: none; }

.site-menu__list {
    display: flex;
    flex-direction: column;
    counter-reset: menu;
}
.site-menu__link {
    display: flex;
    align-items: baseline;
    gap: clamp(1rem, 3vw, 2.5rem);
    padding-block: clamp(0.3rem, 1.2vh, 0.8rem);
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 7vh, 4.6rem);
    font-weight: var(--wt-display);     /* Museo Sans 700 — same as headlines */
    letter-spacing: var(--tr-headline-lg);
    line-height: var(--lh-headline-lg);
    text-decoration: none;
    color: var(--paper);
    transition: color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.site-menu__link:hover,
.site-menu__link:focus-visible { color: var(--orange); transform: translateX(0.35em); }
.site-menu__index {
    font-size: var(--text-small);
    font-weight: 700;
    color: var(--muted-dark);
    letter-spacing: var(--tracking-label);
}
.site-menu__meta {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    font-size: var(--text-small);
    letter-spacing: 0.05em;
}
.site-menu__meta a { color: var(--muted-dark); text-decoration: none; }
.site-menu__meta a:hover { color: var(--paper); }
.site-menu__meta a.site-menu__email { color: var(--orange); }
.site-menu__meta a.site-menu__email:hover { color: var(--paper); }

/* ---- Primary button ---- */
.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.9em;
    padding: 1.05em 1.9em;
    background: var(--orange);
    color: var(--paper);
    font-weight: 700;
    font-size: var(--text-body);
    letter-spacing: 0.02em;
    border: 0;
    border-radius: 100px;
    cursor: pointer;
    overflow: hidden;
    transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.btn-primary:hover { background: var(--orange-deep); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary__arrow { transition: transform var(--dur-fast) var(--ease-out); }
.btn-primary:hover .btn-primary__arrow { transform: translateX(0.35em); }
.btn-primary[disabled] { cursor: wait; transform: none; }
.btn-primary[disabled]:hover { background: var(--orange); transform: none; }

.btn-primary__spinner {
    display: none;
    width: 1.15em;
    height: 1.15em;
    flex-shrink: 0;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--paper);
    border-radius: 50%;
    animation: btn-spin 0.7s linear infinite;
}

.btn-primary.is-sending {
    pointer-events: none;
    gap: 0.75em;
    box-shadow: 0 0 0 0 rgba(255, 122, 47, 0.55);
    animation: btn-sending-pulse 1.2s ease-out infinite;
}
.btn-primary.is-sending .btn-primary__arrow { display: none; }
.btn-primary.is-sending .btn-primary__spinner { display: block; }

@keyframes btn-spin {
    to { transform: rotate(360deg); }
}
@keyframes btn-sending-pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 122, 47, 0.55); }
    70% { box-shadow: 0 0 0 12px rgba(255, 122, 47, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 122, 47, 0); }
}

@media (prefers-reduced-motion: reduce) {
    .btn-primary__spinner { animation: none; border-color: var(--paper); opacity: 0.85; }
    .btn-primary.is-sending { animation: none; box-shadow: none; }
}

/* ---- Form fields ---- */
.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.form-field label {
    font-size: var(--text-small);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted-dark);
}
.form-field__req { color: var(--orange); }
.form-field__opt {
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0.02em;
    opacity: 0.65;
}

.form-field input,
.form-field select,
.form-field textarea {
    padding: 0.85em 0.15em;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--line-dark);
    border-radius: 0;
    color: var(--paper);
    transition: border-color var(--dur-fast) var(--ease-out);
}
.form-field select { cursor: pointer; }
.form-field select option { color: var(--ink); }
.form-field textarea { resize: vertical; min-height: 7.5rem; }

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-bottom-color: var(--orange);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--muted-dark); opacity: 0.7; }

.form-field.has-error input,
.form-field.has-error textarea { border-bottom-color: #ff6b4a; }
.form-field__error {
    min-height: 1.2em;
    font-size: var(--text-small);
    color: #ff8a70;
}

/* ---- Checkbox chips ---- */
.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}
.chip { position: relative; }
.chip input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}
.chip span {
    display: inline-block;
    padding: 0.6em 1.3em;
    border: 1px solid var(--line-dark);
    border-radius: 100px;
    font-size: var(--text-small);
    font-weight: 700;
    color: var(--muted-dark);
    transition: all var(--dur-fast) var(--ease-out);
    user-select: none;
}
.chip:hover span { border-color: var(--paper); color: var(--paper); }
.chip input:checked + span {
    background: var(--orange);
    border-color: var(--orange);
    color: var(--paper);
}
.chip input:focus-visible + span {
    outline: 2px solid var(--orange);
    outline-offset: 3px;
}