/*
Theme Name: PianoMK
Theme URI: https://pianomk.com
Author: Michael
Author URI: https://pianomk.com
Description: Soft neo-brutalism (flat edition) theme for pianomk.com / 米哈钢琴 — warm paper & ink. Ships a transparent, flat, fully responsive header and footer built to the PianoMK design system.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: pianomk
Tags: custom-menu, translation-ready, sticky-header, flat, one-column
*/

/* =====================================================================
   1. Design tokens (PIANOMK-DESIGN.md §2)
   ===================================================================== */
:root {
    /* palette */
    --bg:      #E8E4D8;   /* stone — page background        */
    --paper:   #FFFDF8;   /* paper — cards, inputs' parent  */
    --ink:     #1A1A1A;   /* ink — text, borders, icons     */
    --chip-pink:   #FFD6E0;
    --chip-blue:   #CDEAFE;
    --chip-green:  #D6F5D6;
    --chip-yellow: #FFE8B3;

    /* active nav "bubble" colour (overridable from the Customizer) */
    --active: var(--chip-blue);

    /* structure */
    --radius: 14px;
    --bw:     2.5px;

    /* derived */
    --muted: color-mix(in srgb, var(--ink) 62%, transparent);

    /* type */
    --display: 'Cormorant Garamond', Georgia, serif;
    --body:    'Jost', system-ui, sans-serif;

    /* layout */
    --wrap: 1140px;
    --pmk-header-h: 74px;   /* fixed-header height, for content clearance */
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--pmk-header-h); }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--body);
    font-size: 16.5px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); }

img { max-width: 100%; height: auto; }

/* Accessibility: skip link + focus ring */
.pmk-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 1000;
    padding: 10px 16px;
    background: var(--paper);
    border: var(--bw) solid var(--ink);
    border-radius: 12px;
    font: 600 .72rem/1 var(--body);
    letter-spacing: .14em;
    text-transform: uppercase;
}
.pmk-skip:focus {
    left: 12px;
    top: 12px;
}

:where(a, button, input, [tabindex]):focus-visible {
    outline: 3px dashed var(--ink);
    outline-offset: 3px;
}

/* =====================================================================
   2. HEADER — transparent, sticky (stays on scroll), flat (PC + mobile)
   ===================================================================== */
.pmk-header {
    position: fixed;   /* fixed = never breaks on page-builder overflow wrappers */
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: transparent;   /* transparent by request */
    border: 0;
}

.pmk-header-inner {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 14px clamp(16px, 4vw, 40px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

/* Brand / logo */
.pmk-brand {
    display: inline-flex;
    align-items: baseline;
    line-height: 1;
    text-decoration: none;
    color: var(--ink);
}
.pmk-brand-name {
    font-family: var(--display);
    font-weight: 600;
    font-size: 27px;
    line-height: 1;
    letter-spacing: -.01em;
}
.pmk-brand-name em { font-style: italic; font-weight: 500; }
.pmk-brand .custom-logo {
    display: block;
    max-height: 48px;
    width: auto;
}

/* Nav — inline text links on desktop */
.pmk-nav { display: flex; align-items: center; }
.pmk-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 0;
}
.pmk-menu li { margin: 0; }
.pmk-menu a {
    display: inline-block;
    padding: 9px 16px;
    border: var(--bw) solid transparent;
    border-radius: 999px;
    color: var(--ink);
    font: 600 .72rem/1 var(--body);
    letter-spacing: .14em;
    text-transform: uppercase;
    text-decoration: none;
    transition: transform .15s cubic-bezier(.16, 1, .3, 1);
}
.pmk-menu a:active { transform: scale(.95); }
/* Current page — pastel "bubble" pill */
.pmk-menu .current-menu-item > a,
.pmk-menu .current_page_item > a,
.pmk-menu .current-menu-ancestor > a {
    background: var(--active);
    border-color: var(--ink);
    text-decoration: none;
}
/* CTA pill — add menu-item CSS class "button" (or pmk-cta) in Appearance → Menus */
.pmk-menu li.button > a,
.pmk-menu li.pmk-cta > a {
    background: var(--chip-green);
    border-color: var(--ink);
    text-decoration: none;
}

/* Sub-menus (paper card, flat) */
.pmk-menu .sub-menu {
    position: absolute;
    z-index: 60;
    min-width: 200px;
    margin-top: 8px;
    padding: 8px;
    list-style: none;
    display: none;
    flex-direction: column;
    gap: 6px;
    background: var(--paper);
    border: var(--bw) solid var(--ink);
    border-radius: var(--radius);
}
.pmk-menu .menu-item-has-children { position: relative; }
.pmk-menu .menu-item-has-children:focus-within > .sub-menu,
.pmk-menu .menu-item-has-children:hover > .sub-menu { display: flex; }
.pmk-menu .sub-menu a {
    width: 100%;
    border-radius: 10px;
}

/* Burger + close buttons (hidden on desktop, shown ≤820px) */
.pmk-burger,
.pmk-close {
    display: none;
    padding: 0;
    background: transparent;
    border: 0;
    cursor: pointer;
    color: var(--ink);
    line-height: 1;
}
.pmk-burger svg,
.pmk-close svg { width: 24px; height: 24px; display: block; }

/* =====================================================================
   3. FOOTER — transparent, flat (PC + mobile)
   ===================================================================== */
.pmk-footer {
    background: transparent;   /* transparent by request */
    border: 0;
    margin-top: 72px;
}
.pmk-footer-inner {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: clamp(32px, 5vw, 56px) clamp(16px, 4vw, 40px) 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

/* Footer nav = label-style pills */
.pmk-footer .pmk-menu {
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}
.pmk-footer .pmk-menu a {
    background: transparent;
    border-color: color-mix(in srgb, var(--ink) 55%, transparent);
    color: var(--muted);
}
.pmk-footer .pmk-menu .current-menu-item > a { color: var(--ink); border-color: var(--ink); }

/* Social icon chips */
.pmk-social {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.pmk-social a {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    background: var(--paper);
    border: var(--bw) solid var(--ink);
    border-radius: 13px;
    color: var(--ink);
    transition: transform .15s cubic-bezier(.16, 1, .3, 1);
}
.pmk-social a:active { transform: scale(.92); }
.pmk-social svg { width: 22px; height: 22px; display: block; }

/* Signature (PIANOMK-DESIGN.md §4) */
.pmk-sig {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    opacity: .5;
    font: 500 12px var(--body);
    letter-spacing: .18em;
    text-transform: uppercase;
}
.pmk-sig::before,
.pmk-sig::after {
    content: "";
    width: 36px;
    height: var(--bw);
    background: var(--ink);
}

.pmk-copyright {
    font-size: .78rem;
    color: var(--muted);
    letter-spacing: .02em;
}

/* =====================================================================
   4. Minimal content styling (so pages render pleasantly)
   ===================================================================== */
.pmk-main {
    max-width: 760px;
    margin: 0 auto;
    /* top padding clears the fixed header */
    padding: calc(var(--pmk-header-h) + clamp(24px, 4vw, 40px)) clamp(20px, 4vw, 40px) 24px;
}
.pmk-main.is-wide { max-width: var(--wrap); }

/* Full-width & page-builder pages: let content span edge-to-edge.
   (Elementor's "Full Width"/"Canvas" content renders inside this .pmk-main,
   so releasing the constraint here is what makes builders work.) */
body.pmk-fullwidth .pmk-main,
body.elementor-page .pmk-main,
body.elementor-template-full-width .pmk-main {
    max-width: none;
    padding-left: 0;
    padding-right: 0;
}
/* Elementor lays out its own hero spacing → let it sit under the transparent header */
body.elementor-page .pmk-main,
body.elementor-template-full-width .pmk-main {
    padding-top: 0;
    padding-bottom: 0;
}

/* Page title (hidden automatically on builder / full-width pages) */
.pmk-page-head { margin: 0 0 .4em; }
.pmk-page-title { margin: 0; }
body.elementor-page .pmk-page-title,
body.elementor-template-full-width .pmk-page-title,
body.pmk-fullwidth .pmk-page-title { display: none; }

.pmk-main h1, .pmk-main h2, .pmk-main h3 {
    font-family: var(--display);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -.01em;
}
.pmk-main h1 { font-size: clamp(40px, 6.4vw, 68px); line-height: 1.02; margin: 0 0 .3em; }
.pmk-main h2 { font-size: 30px; margin: 1.2em 0 .4em; }
.pmk-main h3 { font-size: 24px; margin: 1em 0 .3em; }
.pmk-main p, .pmk-main li { font-size: 16.5px; line-height: 1.6; }
.pmk-main a { text-underline-offset: 3px; }

.pmk-kicker {
    display: inline-block;
    font: 600 .72rem/1 var(--body);
    letter-spacing: .22em;
    text-transform: uppercase;
    padding: 7px 16px;
    background: var(--paper);
    border: var(--bw) solid var(--ink);
    border-radius: 999px;
    margin: 0 0 18px;
}

.pmk-card {
    background: var(--paper);
    border: var(--bw) solid var(--ink);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 0 0 18px;
}

.pmk-entry-meta {
    font: 600 .68rem/1 var(--body);
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 10px;
}

.pmk-empty {
    text-align: center;
    padding: 40px 20px;
    background: var(--paper);
    border: var(--bw) dashed var(--ink);
    border-radius: var(--radius);
}
.pmk-empty em { font-family: var(--display); font-size: 22px; }

/* =====================================================================
   5. Mobile (≤820px)
   ===================================================================== */
@media (max-width: 820px) {
    :root { --pmk-header-h: 70px; }
    .pmk-header-inner { padding: 12px 16px; }
    .pmk-brand-name { font-size: 25px; }

    /* Burger — flat icon chip */
    .pmk-burger {
        display: grid;
        place-items: center;
        width: 46px;
        height: 46px;
        background: var(--paper);
        border: var(--bw) solid var(--ink);
        border-radius: 12px;
        transition: transform .15s cubic-bezier(.16, 1, .3, 1);
    }
    .pmk-burger:active { transform: scale(.95); }

    /* Full-screen overlay menu (paper fill so links stay legible over content) */
    .pmk-nav {
        position: fixed;
        inset: 0;
        z-index: 1100;
        display: none;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 26px;
        background: var(--paper);
    }
    .pmk-nav.is-open { display: flex; }

    .pmk-nav .pmk-menu {
        flex-direction: column;
        align-items: center;
        gap: 26px;
    }
    .pmk-nav .pmk-menu a {
        font-family: var(--display);
        font-size: 34px;
        font-weight: 600;
        letter-spacing: 0;
        text-transform: none;
        border: 0;
        padding: 4px 8px;
    }
    .pmk-nav .pmk-menu .current-menu-item > a,
    .pmk-nav .pmk-menu .current_page_item > a {
        background: var(--active);
        border: var(--bw) solid var(--ink);
        border-radius: 999px;
        padding: 6px 26px;
    }
    .pmk-nav .pmk-menu li.button > a,
    .pmk-nav .pmk-menu li.pmk-cta > a {
        font-family: var(--body);
        font-size: .8rem;
        font-weight: 600;
        letter-spacing: .14em;
        text-transform: uppercase;
        border: var(--bw) solid var(--ink);
        border-radius: 999px;
        padding: 12px 26px;
        background: var(--chip-green);
    }
    .pmk-nav .pmk-menu .sub-menu {
        position: static;
        display: flex;
        margin: 0;
        padding: 0;
        border: 0;
        background: transparent;
        gap: 14px;
    }
    .pmk-nav .pmk-menu .sub-menu a { font-size: 22px; }

    /* Close button — top-right icon chip inside the overlay */
    .pmk-close {
        display: grid;
        place-items: center;
        position: absolute;
        top: 20px;
        right: 16px;
        width: 48px;
        height: 48px;
        background: var(--paper);
        border: var(--bw) solid var(--ink);
        border-radius: 12px;
        transition: transform .15s cubic-bezier(.16, 1, .3, 1);
    }
    .pmk-close:active { transform: scale(.95); }

    .pmk-footer-inner { gap: 20px; }
}

/* =====================================================================
   6. Reduced motion (PIANOMK-DESIGN.md §1.7)
   ===================================================================== */
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; scroll-behavior: auto !important; }
}