/* ======================================================
   מכון לחקר גנאלוגיה · Institute for Genealogy Research
   Style Sheet

   Sections
   01 Fonts            08 Cards & lists      15 Search & publications
   02 Tokens & reset   09 Modal              16 Articles
   03 Base             10 Gallery & lightbox 17 Media & partners
   04 Header           11 Floating buttons   18 Responsive
   05 Hero             12 About              19 Motion
   06 Buttons          13 Contact form
   07 Sections         14 Footer
====================================================== */


/* ======================================================
   01 FONTS  (self-hosted, variable)
   Heebo – body text · Frank Ruhl Libre – headings
====================================================== */

@font-face{
    font-family:'Heebo';
    font-style:normal;
    font-weight:100 900;
    font-display:swap;
    src:url('../fonts/heebo-hebrew-wght-normal.woff2') format('woff2-variations'),
        url('../fonts/heebo-hebrew-wght-normal.woff2') format('woff2');
    unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F;
}

@font-face{
    font-family:'Heebo';
    font-style:normal;
    font-weight:100 900;
    font-display:swap;
    src:url('../fonts/heebo-latin-wght-normal.woff2') format('woff2-variations'),
        url('../fonts/heebo-latin-wght-normal.woff2') format('woff2');
    unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

@font-face{
    font-family:'Frank Ruhl Libre';
    font-style:normal;
    font-weight:300 900;
    font-display:swap;
    src:url('../fonts/frank-ruhl-libre-hebrew-wght-normal.woff2') format('woff2-variations'),
        url('../fonts/frank-ruhl-libre-hebrew-wght-normal.woff2') format('woff2');
    unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F;
}

@font-face{
    font-family:'Frank Ruhl Libre';
    font-style:normal;
    font-weight:300 900;
    font-display:swap;
    src:url('../fonts/frank-ruhl-libre-latin-wght-normal.woff2') format('woff2-variations'),
        url('../fonts/frank-ruhl-libre-latin-wght-normal.woff2') format('woff2');
    unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}


/* ======================================================
   02 TOKENS & RESET
====================================================== */

:root{

    /* palette */
    --gold:#B08A52;
    --gold-light:#D6B27A;
    --gold-dark:#8B6A3E;      /* AA contrast on white – use for text & buttons */
    --brown:#4A3523;
    --brown-light:#6F5236;
    --ink:#3a2a1b;
    --cream:#F8F6F2;
    --paper:#FBF9F5;
    --white:#ffffff;
    --muted:#6b5d52;          /* AA on white and cream */
    --line:#e7e1d8;

    /* type */
    --font-body:'Heebo',system-ui,-apple-system,'Segoe UI',Arial,sans-serif;
    --font-head:'Frank Ruhl Libre','Heebo',Georgia,'Times New Roman',serif;

    /* shape & motion */
    --shadow-sm:0 6px 18px rgba(74,53,35,.07);
    --shadow:0 15px 35px rgba(74,53,35,.12);
    --shadow-lg:0 22px 50px rgba(74,53,35,.16);
    --transition:.3s ease;
    --radius:16px;
    --radius-sm:10px;

    /* layout */
    --container:1200px;
    --header-height:84px;
}

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

*{
    margin:0;
    padding:0;
}

html{
    scroll-behavior:smooth;
    scroll-padding-top:calc(var(--header-height) + 10px);
    -webkit-text-size-adjust:100%;
    text-size-adjust:100%;
}


/* ======================================================
   03 BASE
====================================================== */

body{
    font-family:var(--font-body);
    font-size:1.0625rem;
    font-weight:400;
    background:var(--cream);
    color:var(--brown);
    line-height:1.75;
    overflow-x:hidden;
    text-rendering:optimizeLegibility;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4{
    font-family:var(--font-head);
    font-weight:700;
    line-height:1.25;
    color:var(--brown);
    text-wrap:balance;
}

p{
    text-wrap:pretty;
}

ul{
    list-style:none;
}

/* the search script hides rows with [hidden]; make sure nothing overrides it */

[hidden]{
    display:none !important;
}

a{
    color:inherit;
    text-decoration:none;
    transition:color var(--transition);
}

a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
input:focus-visible,
textarea:focus-visible{
    outline:3px solid var(--gold);
    outline-offset:3px;
    border-radius:6px;
}

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

button{
    font:inherit;
    color:inherit;
}

::selection{
    background:var(--gold-light);
    color:var(--ink);
}

.container{
    width:min(var(--container),92%);
    margin-inline:auto;
    padding-inline:10px;
}

/* accessibility helpers */

.sr-only{
    position:absolute;
    width:1px;
    height:1px;
    padding:0;
    margin:-1px;
    overflow:hidden;
    clip:rect(0,0,0,0);
    white-space:nowrap;
    border:0;
}

.skip-link{
    position:fixed;
    top:-80px;
    inset-inline-start:16px;
    z-index:100000;
    padding:12px 20px;
    background:var(--brown);
    color:var(--white);
    font-weight:700;
    border-radius:0 0 var(--radius-sm) var(--radius-sm);
    transition:top .2s ease;
}

.skip-link:focus{
    top:0;
}


/* ======================================================
   04 HEADER
====================================================== */

header{
    position:fixed;
    top:0;
    right:0;
    left:0;
    z-index:1000;
    background:var(--white);
    border-bottom:1px solid rgba(176,138,82,.22);
    transition:
        background var(--transition),
        box-shadow var(--transition);
}

header.scrolled{
    background:rgba(255,255,255,.9);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    box-shadow:0 8px 28px rgba(74,53,35,.09);
}

header .container{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    min-height:var(--header-height);
    transition:min-height .35s ease;
}

header.scrolled .container{
    min-height:66px;
}

.logo{
    flex-shrink:0;
    display:block;
}

.logo img{
    width:auto;
    height:calc(var(--header-height) - 16px);
    max-width:100%;
    object-fit:contain;
    transition:height .35s ease, transform .35s ease;
}

header.scrolled .logo img{
    height:54px;
}

.logo:hover img{
    transform:scale(1.04);
}

header nav ul{
    display:flex;
    align-items:center;
    gap:clamp(18px,2.4vw,34px);
}

nav a{
    position:relative;
    display:inline-block;
    padding-block:6px;
    color:var(--brown);
    font-weight:500;
    font-size:1rem;
    white-space:nowrap;
}

nav a::after{
    content:"";
    position:absolute;
    bottom:0;
    inset-inline-start:0;
    width:0;
    height:2px;
    background:var(--gold);
    transition:width var(--transition);
}

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

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

.header-actions{
    display:flex;
    align-items:center;
    gap:10px;
}

.lang-switch{
    display:flex;
    align-items:center;
    justify-content:center;
    min-width:46px;
    height:44px;
    padding-inline:10px;
    border:1px solid var(--gold);
    border-radius:var(--radius-sm);
    color:var(--brown);
    font-weight:700;
    font-size:.95rem;
    letter-spacing:.04em;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}

.lang-switch:hover{
    background:var(--brown);
    border-color:var(--brown);
    color:var(--white);
}

/* hamburger – drawn in CSS so it never depends on an icon font */

#menuButton{
    display:none;
    position:relative;
    width:46px;
    height:46px;
    border:none;
    border-radius:var(--radius-sm);
    background:transparent;
    cursor:pointer;
    transition:background var(--transition);
}

#menuButton:hover{
    background:rgba(176,138,82,.14);
}

.menu-bars,
.menu-bars::before,
.menu-bars::after{
    position:absolute;
    inset-inline:12px;
    height:2px;
    border-radius:2px;
    background:var(--brown);
    content:"";
    transition:transform .3s ease, opacity .2s ease, top .3s ease;
}

.menu-bars{
    top:22px;
}

.menu-bars::before{
    top:-7px;
    inset-inline:0;
}

.menu-bars::after{
    top:7px;
    inset-inline:0;
}

#menuButton.active .menu-bars{
    background:transparent;
}

#menuButton.active .menu-bars::before{
    top:0;
    transform:rotate(45deg);
}

#menuButton.active .menu-bars::after{
    top:0;
    transform:rotate(-45deg);
}


/* ======================================================
   05 HERO
====================================================== */

.hero{
    position:relative;
    min-height:100vh;
    min-height:100svh;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    background:var(--brown) url("../images/hero.jpg") center / cover no-repeat;
    overflow:hidden;
    padding:calc(var(--header-height) + 50px) 20px 90px;
}

/* darker in the middle (for the text), lighter at the edges (to show the tree) */

.overlay{
    position:absolute;
    inset:0;
    background:
        radial-gradient(ellipse 70% 65% at 50% 50%,rgba(34,21,11,.82) 0%,rgba(34,21,11,.66) 55%,rgba(34,21,11,.52) 100%),
        linear-gradient(rgba(34,21,11,.15),rgba(34,21,11,.15));
}

.hero-pattern{
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:24px 24px;
    pointer-events:none;
}

.hero-content{
    position:relative;
    z-index:10;
    width:100%;
    max-width:900px;
    margin:auto;
    color:var(--white);
    padding:0 15px;
    text-shadow:0 2px 18px rgba(0,0,0,.45);
}

.hero h1{
    font-family:var(--font-head);
    font-size:clamp(2.2rem,5.6vw,4.2rem);
    font-weight:700;
    color:var(--white);
    line-height:1.15;
    margin-bottom:16px;
}

.hero h2{
    font-family:var(--font-body);
    color:var(--gold-light);
    font-size:clamp(1.1rem,2.6vw,1.6rem);
    font-weight:300;
    letter-spacing:.12em;
    margin-bottom:10px;
}

.hero p{
    max-width:720px;
    margin:0 auto 42px;
    line-height:1.85;
    font-size:clamp(1.02rem,2vw,1.28rem);
    color:rgba(255,255,255,.94);
}

.gold-line{
    width:140px;
    height:3px;
    background:linear-gradient(to left,var(--gold-light),var(--gold));
    margin:22px auto 30px;
    border-radius:50px;
}

.hero-buttons{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:20px;
}


/* ======================================================
   06 BUTTONS
====================================================== */

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    padding:14px 32px;
    border:2px solid var(--gold-dark);
    border-radius:8px;
    background:transparent;
    color:var(--gold-dark);
    font-family:var(--font-body);
    font-size:1rem;
    font-weight:700;
    line-height:1.4;
    cursor:pointer;
    text-shadow:none;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.btn:hover{
    background:var(--gold-dark);
    color:var(--white);
    transform:translateY(-2px);
    box-shadow:0 10px 22px rgba(139,106,62,.28);
}

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

.btn-primary{
    background:var(--gold-dark);
    border-color:var(--gold-dark);
    color:var(--white);
}

.btn-primary:hover{
    background:var(--brown);
    border-color:var(--brown);
    color:var(--white);
}

.btn[disabled]{
    opacity:.65;
    cursor:progress;
    transform:none;
    box-shadow:none;
}

.btn-secondary{
    border-color:var(--white);
    background:var(--brown);
    color:var(--white);
}

.btn-secondary:hover{
    background:var(--white);
    color:var(--brown);
    border-color:var(--white);
}


/* ======================================================
   07 SECTIONS
====================================================== */

.section{
    padding:clamp(70px,8vw,104px) 0;
}

.section.light{
    background:var(--white);
}

main > .section:first-child,
.articles-page{
    padding-top:calc(var(--header-height) + clamp(50px,6vw,80px));
}

.section-title{
    text-align:center;
    margin-bottom:clamp(44px,6vw,70px);
}

.section-title h1,
.section-title h2{
    font-size:clamp(2rem,4.6vw,2.9rem);
    color:var(--brown);
    margin-bottom:16px;
}

/* small ornament under every section heading */

.section-title h1::after,
.section-title h2::after{
    content:"";
    display:block;
    width:84px;
    height:3px;
    margin:18px auto 0;
    border-radius:50px;
    background:linear-gradient(to left,var(--gold-light),var(--gold));
}

.section-title p{
    color:var(--muted);
    font-size:clamp(1rem,2vw,1.15rem);
    max-width:720px;
    margin:auto;
}

.section-divider{
    width:120px;
    height:4px;
    background:linear-gradient(to left,var(--gold-light),var(--gold));
    border-radius:50px;
    margin:25px auto 50px;
}


/* ======================================================
   08 CARDS & LISTS
====================================================== */

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:clamp(22px,3vw,32px);
}

.card,
.project-card{
    display:block;
    height:100%;
    background:var(--white);
    overflow:hidden;
}

.card{
    border:1px solid var(--line);
    border-radius:8px;
    padding:40px 30px;
    text-align:center;
    box-shadow:var(--shadow-sm);
    transition:border-color var(--transition), box-shadow var(--transition);
}

.card:hover{
    border-color:var(--gold);
}

.card h3{
    margin-bottom:15px;
    font-size:clamp(1.35rem,3vw,1.5rem);
}

.card p{
    color:var(--muted);
    line-height:1.9;
}

.expertise-icon{
    font-size:clamp(2.2rem,5vw,2.8rem);
    color:var(--gold);
    margin-bottom:22px;
}

/* project cards (home → sub pages) */

.project-card{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    padding:34px 32px 30px;
    border:1px solid var(--line);
    border-top:4px solid var(--gold);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

.project-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow);
    border-color:var(--gold);
}

.project-card .expertise-icon{
    font-size:2rem;
    margin-bottom:18px;
}

.project-card h3{
    margin-bottom:12px;
    font-size:1.45rem;
}

.project-card p{
    margin-bottom:22px;
    color:var(--muted);
    line-height:1.8;
}

.project-card::after{
    content:"\2190";                 /* ← */
    margin-top:auto;
    color:var(--gold-dark);
    font-size:1.5rem;
    line-height:1;
    transition:transform var(--transition);
}

html[dir="ltr"] .project-card::after{
    content:"\2192";                 /* → */
}

.project-card:hover::after{
    transform:translateX(-6px);
}

html[dir="ltr"] .project-card:hover::after{
    transform:translateX(6px);
}

/* expertise list */

.expertise-list{
    max-width:900px;
    margin:0 auto;
    border-top:1px solid var(--line);
}

.expertise-item{
    display:flex;
    align-items:center;
    gap:18px;
    padding:24px 14px;
    border-bottom:1px solid var(--line);
    cursor:pointer;
    transition:
        background var(--transition),
        padding var(--transition);
}

.expertise-item::after{
    content:"\2190";
    margin-inline-start:auto;
    color:var(--gold);
    font-size:1.4rem;
    opacity:0;
    transform:translateX(8px);
    transition:opacity var(--transition), transform var(--transition);
}

html[dir="ltr"] .expertise-item::after{
    content:"\2192";
    transform:translateX(-8px);
}

.expertise-item:hover,
.expertise-item:focus-visible{
    background:#faf8f3;
    padding-inline-start:26px;
}

.expertise-item:hover::after,
.expertise-item:focus-visible::after{
    opacity:1;
    transform:none;
}

.bullet{
    width:10px;
    height:10px;
    border-radius:50%;
    background:var(--gold);
    flex-shrink:0;
}

.expertise-item h3{
    margin:0;
    font-size:clamp(1.3rem,3vw,1.65rem);
    font-weight:500;
    transition:color var(--transition);
}

.expertise-item:hover h3,
.expertise-item:focus-visible h3{
    color:var(--gold-dark);
}


/* ======================================================
   09 MODAL
====================================================== */

.modal{
    display:none;
    position:fixed;
    inset:0;
    z-index:9999;
    padding:20px;
    justify-content:center;
    align-items:center;
    background:rgba(30,19,10,.62);
    -webkit-backdrop-filter:blur(4px);
    backdrop-filter:blur(4px);
}

.modal.open{
    display:flex;
}

.modal-content{
    position:relative;
    width:min(680px,100%);
    max-height:90vh;
    overflow:auto;
    padding:44px 40px 38px;
    border-top:5px solid var(--gold);
    border-radius:var(--radius);
    background:var(--white);
    box-shadow:var(--shadow-lg);
    animation:popup .28s ease;
}

.modal-content h2{
    margin-bottom:16px;
    font-size:clamp(1.6rem,4vw,2rem);
}

.modal-content p{
    color:var(--muted);
    font-size:1.1rem;
    line-height:1.9;
}

.close{
    position:absolute;
    top:12px;
    inset-inline-end:16px;
    width:44px;
    height:44px;
    border:none;
    border-radius:50%;
    background:none;
    color:var(--muted);
    font-size:2rem;
    line-height:1;
    cursor:pointer;
    transition:color var(--transition), background var(--transition);
}

.close:hover{
    color:var(--gold-dark);
    background:rgba(176,138,82,.12);
}

@keyframes popup{
    from{
        opacity:0;
        transform:translateY(24px);
    }
    to{
        opacity:1;
        transform:none;
    }
}


/* ======================================================
   10 GALLERY & LIGHTBOX
====================================================== */

.gallery-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.gallery-item{
    display:block;
    width:100%;
    aspect-ratio:4 / 3;
    height:auto;
    object-fit:cover;
    object-position:center 30%;
    border-radius:var(--radius);
    cursor:zoom-in;
    box-shadow:var(--shadow-sm);
    transition:transform var(--transition), box-shadow var(--transition);
}

.gallery-item:hover{
    transform:scale(1.03);
    box-shadow:var(--shadow);
}

.lightbox{
    display:none;
    position:fixed;
    inset:0;
    z-index:99999;
    padding:20px;
    justify-content:center;
    align-items:center;
    background:rgba(18,11,5,.93);
}

.lightbox.show{
    display:flex;
}

.lightbox img{
    max-width:min(92vw,1400px);
    max-height:86vh;
    border-radius:12px;
    object-fit:contain;
    box-shadow:0 20px 60px rgba(0,0,0,.5);
}

.lightbox-btn{
    position:absolute;
    display:flex;
    align-items:center;
    justify-content:center;
    width:50px;
    height:50px;
    border:1px solid rgba(255,255,255,.25);
    border-radius:50%;
    background:rgba(255,255,255,.08);
    color:var(--white);
    font-size:1.6rem;
    line-height:1;
    cursor:pointer;
    transition:background var(--transition), color var(--transition);
}

.lightbox-btn:hover{
    background:var(--gold);
    color:var(--white);
}

.lightbox-close{
    top:22px;
    inset-inline-start:22px;
    font-size:2rem;
}

.lightbox-prev,
.lightbox-next{
    top:50%;
    margin-top:-25px;
}

/* In RTL "next" sits on the left, in LTR on the right */

.lightbox-next{
    left:22px;
}

.lightbox-prev{
    right:22px;
}

html[dir="ltr"] .lightbox-next{
    left:auto;
    right:22px;
}

html[dir="ltr"] .lightbox-prev{
    right:auto;
    left:22px;
}

.lightbox-count{
    position:absolute;
    bottom:20px;
    left:0;
    right:0;
    text-align:center;
    color:rgba(255,255,255,.75);
    font-size:.95rem;
}


/* ======================================================
   11 FLOATING BUTTONS
====================================================== */

.whatsapp{
    position:fixed;
    bottom:max(26px,env(safe-area-inset-bottom));
    left:26px;
    z-index:999;
    display:flex;
    align-items:center;
    justify-content:center;
    width:62px;
    height:62px;
    border-radius:50%;
    background:#1fa855;
    color:var(--white);
    font-size:2rem;
    box-shadow:0 12px 28px rgba(0,0,0,.25);
    transition:transform var(--transition), box-shadow var(--transition);
}

.whatsapp:hover{
    transform:scale(1.1);
    box-shadow:0 18px 36px rgba(0,0,0,.3);
}

.whatsapp:focus-visible{
    outline-color:var(--white);
    outline-offset:4px;
}

#backToTop{
    position:fixed;
    bottom:max(100px,calc(env(safe-area-inset-bottom) + 74px));
    left:32px;
    z-index:999;
    width:50px;
    height:50px;
    border:none;
    border-radius:50%;
    background:var(--gold-dark);
    color:var(--white);
    font-size:1.1rem;
    cursor:pointer;
    opacity:0;
    visibility:hidden;
    transform:translateY(10px);
    box-shadow:var(--shadow);
    transition:
        opacity var(--transition),
        visibility var(--transition),
        background var(--transition),
        transform var(--transition);
}

#backToTop.visible{
    opacity:1;
    visibility:visible;
    transform:none;
}

#backToTop:hover{
    background:var(--brown);
    transform:translateY(-4px);
}

#backToTop:focus-visible{
    outline-color:var(--white);
    outline-offset:4px;
}


/* ======================================================
   12 ABOUT
====================================================== */

.about-container{
    display:grid;
    grid-template-columns:minmax(260px,380px) 1fr;
    gap:clamp(40px,6vw,76px);
    align-items:center;
}

.about-image{
    display:flex;
    justify-content:center;
}

.about-image img{
    width:100%;
    max-width:380px;
    height:auto;
    padding:30px 26px;
    border:1px solid rgba(176,138,82,.28);
    border-radius:22px;
    background:var(--cream);
    box-shadow:var(--shadow);
}

.about-text h2{
    font-size:clamp(2rem,4.6vw,2.7rem);
    margin-bottom:24px;
}

.about-text p{
    margin-bottom:18px;
    font-size:clamp(1.02rem,2vw,1.15rem);
    color:var(--muted);
    line-height:1.9;
}


/* ======================================================
   13 CONTACT FORM
====================================================== */

form{
    max-width:850px;
    margin:auto;
}

.form-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-bottom:20px;
}

input,
textarea{
    display:block;
    width:100%;
    padding:17px 18px;
    border:1px solid #d9d2c7;
    border-radius:14px;
    background:var(--white);
    color:var(--brown);
    font-family:inherit;
    font-size:1.05rem;
    transition:
        border-color var(--transition),
        box-shadow var(--transition);
}

input::placeholder,
textarea::placeholder{
    color:#8a7d72;
    opacity:1;
}

input:focus,
textarea:focus{
    outline:none;
    border-color:var(--gold);
    box-shadow:0 0 0 4px rgba(176,138,82,.2);
}

form > input,
form > textarea{
    margin-bottom:20px;
}

textarea{
    min-height:170px;
    resize:vertical;
}

form .btn{
    min-width:190px;
}

/* honeypot – invisible to people, tempting to bots */

.hp{
    position:absolute !important;
    width:1px;
    height:1px;
    margin:-1px;
    padding:0;
    border:0;
    overflow:hidden;
    clip-path:inset(50%);
    opacity:0;
    pointer-events:none;
}

.success-message,
.error-message{
    display:none;
    max-width:850px;
    margin:28px auto 0;
    padding:16px 20px;
    border-radius:12px;
    text-align:center;
    font-weight:600;
}

.success-message{
    background:#e8f6ec;
    color:#1b5e2b;
    border:1px solid #8bd19b;
}

.error-message{
    background:#fdecea;
    color:#8a1f17;
    border:1px solid #f0aaa4;
}


/* ======================================================
   14 FOOTER
====================================================== */

footer{
    background:var(--brown);
    color:var(--white);
    padding:80px 0 30px;
}

.footer-grid{
    display:grid;
    grid-template-columns:1.2fr 1fr 1.2fr;
    gap:clamp(34px,5vw,60px);
    align-items:start;
}

.footer-logo{
    width:210px;
    max-width:100%;
    height:auto;
    margin-bottom:20px;
    padding:14px 18px;
    border-radius:14px;
    background:var(--cream);
}

footer p{
    color:rgba(255,255,255,.82);
}

footer h3{
    margin-bottom:20px;
    color:var(--gold-light);
    font-size:1.25rem;
}

footer li{
    margin-bottom:6px;
}

footer nav a{
    padding-block:2px;
}

footer nav a::after{
    display:none;
}

footer a{
    color:#f5f1ea;
    transition:color var(--transition);
}

footer a:hover{
    color:var(--gold-light);
}

footer a:focus-visible{
    outline-color:var(--gold-light);
}

.footer-contact{
    display:flex;
    align-items:center;
    gap:12px;
    margin:0 0 14px;
    line-height:1.6;
}

.footer-contact i{
    width:20px;
    flex-shrink:0;
    text-align:center;
    color:var(--gold-light);
}

.copyright{
    margin-top:60px;
    padding-top:26px;
    border-top:1px solid rgba(255,255,255,.14);
    text-align:center;
    font-size:.95rem;
    color:rgba(255,255,255,.7);
}


/* ======================================================
   15 SEARCH & PUBLICATIONS  (portfolio page)
====================================================== */

.search-box{
    max-width:800px;
    margin:0 auto 14px;
}

.search-box input{
    padding:17px 26px;
    border:2px solid var(--gold);
    border-radius:50px;
    font-size:1.1rem;
}

.search-box input:focus{
    box-shadow:0 0 0 5px rgba(176,138,82,.2);
}

.search-count{
    max-width:800px;
    margin:0 auto 24px;
    padding-inline:26px;
    min-height:1.6em;
    color:var(--muted);
    font-size:.95rem;
}

.no-results{
    display:none;
    max-width:800px;
    margin:30px auto;
    padding:28px;
    text-align:center;
    color:var(--muted);
    border:1px dashed var(--gold);
    border-radius:var(--radius);
    background:var(--white);
}

.no-results.visible{
    display:block;
}

.publication-list{
    max-width:1100px;
    margin:30px auto 0;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
    overflow:hidden;
}

.publication-list li{
    padding:16px 24px;
    border-bottom:1px solid #eee8de;
    font-size:1.05rem;
    line-height:1.8;
    transition:background var(--transition);
}

.publication-list li:last-child{
    border-bottom:none;
}

.publication-list li:hover{
    background:#faf7f2;
}

.publication-list li.pub-heading{
    padding:20px 24px 14px;
    border-inline-start:5px solid var(--gold);
    background:#f6f0e4;
    color:var(--brown);
    font-family:var(--font-head);
    font-size:1.45rem;
    font-weight:700;
}

.publication-list li.pub-heading:hover{
    background:#f6f0e4;
}

.publication-list a{
    display:block;
    color:var(--brown);
}

.highlight{
    background:#f3e5ce;
    border-radius:12px;
}

/* placeholder pages: publishing & historical research */

.publications{
    display:grid;
    gap:30px;
    max-width:960px;
    margin:0 auto;
}

.publication-item{
    display:grid;
    grid-template-columns:minmax(150px,220px) 1fr;
    gap:30px;
    align-items:center;
    padding:28px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:var(--white);
    box-shadow:var(--shadow-sm);
}

.publication-item:has(.publication-image:only-child),
.publication-item:not(:has(.publication-image)){
    grid-template-columns:1fr;
}

.publication-image img{
    width:100%;
    border-radius:var(--radius-sm);
    box-shadow:var(--shadow-sm);
}

.publication-content h2{
    margin-bottom:12px;
    font-size:1.6rem;
}

.publication-content p{
    color:var(--muted);
    margin-bottom:6px;
}

.publication-content .publication-image{
    max-width:220px;
    margin-top:16px;
}


/* ======================================================
   16 ARTICLES
====================================================== */

.articles-page{
    background:var(--cream);
}

.articles-grid{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
    gap:28px;
    margin-top:40px;
}

.article-card{
    display:flex;
    flex-direction:column;
    gap:16px;
    padding:30px;
    border:1px solid rgba(176,138,82,.2);
    border-radius:var(--radius);
    background:var(--white);
    box-shadow:var(--shadow-sm);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

.article-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow);
    border-color:var(--gold);
}

.article-top{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:12px;
}

.article-top i{
    font-size:1.9rem;
    color:var(--gold);
}

.article-top span{
    padding:3px 14px;
    border-radius:50px;
    background:#f4ecdd;
    color:var(--gold-dark);
    font-size:.85rem;
    font-weight:700;
    letter-spacing:.03em;
}

.article-card h2{
    font-size:1.65rem;
}

.article-description{
    color:var(--muted);
    font-size:1rem;
    line-height:1.8;
}

.article-meta{
    color:var(--brown-light);
    font-size:.95rem;
}

.article-meta i{
    color:var(--gold);
    margin-inline-end:8px;
}

.article-card .btn{
    margin-top:auto;
    align-self:flex-start;
}


/* ======================================================
   17 MEDIA & PARTNERS
====================================================== */

.media-section{
    padding:clamp(70px,8vw,100px) 0;
    background:var(--white);
}

.media-section h2{
    text-align:center;
    font-size:clamp(2rem,4.6vw,2.9rem);
    margin-bottom:16px;
}

.media-section h2::after{
    content:"";
    display:block;
    width:84px;
    height:3px;
    margin:18px auto 0;
    border-radius:50px;
    background:linear-gradient(to left,var(--gold-light),var(--gold));
}

.section-subtitle{
    max-width:720px;
    margin:0 auto clamp(40px,5vw,56px);
    text-align:center;
    color:var(--muted);
    font-size:clamp(1rem,2vw,1.15rem);
}

.media-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
    gap:24px;
}

.media-card{
    display:block;
    padding:34px 22px;
    border:1px solid rgba(176,138,82,.22);
    border-radius:var(--radius);
    background:var(--white);
    text-align:center;
    color:inherit;
    box-shadow:var(--shadow-sm);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

.media-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow);
    border-color:var(--gold);
}

.media-card i{
    display:block;
    margin-bottom:16px;
    font-size:2.5rem;
    color:var(--gold);
}

.media-card h3{
    margin-bottom:8px;
    font-size:1.3rem;
}

.media-card span{
    color:var(--muted);
    font-size:.97rem;
}

.partners-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
    gap:30px;
    margin-top:50px;
}

.partner-card{
    display:flex;
    justify-content:center;
    align-items:center;
    min-height:150px;
    padding:30px;
    border:1px solid rgba(176,138,82,.2);
    border-radius:var(--radius);
    background:var(--white);
    box-shadow:var(--shadow-sm);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

.partner-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow);
    border-color:var(--gold);
}

.partner-card img{
    max-width:150px;
    max-height:80px;
    width:auto;
    height:auto;
    object-fit:contain;
    filter:grayscale(100%);
    opacity:.85;
    transition:filter var(--transition), opacity var(--transition);
}

.partner-card:hover img{
    filter:none;
    opacity:1;
}

.center-btn{
    margin-top:50px;
    text-align:center;
}


/* ======================================================
   18 RESPONSIVE
====================================================== */

/* collapse the navigation before it can overflow */

@media (max-width:1100px){

    :root{
        --header-height:76px;
    }

    #menuButton{
        display:block;
    }

    header nav{
        position:absolute;
        top:100%;
        right:0;
        left:0;
        z-index:1001;
        visibility:hidden;
        opacity:0;
        transform:translateY(-12px);
        padding:14px 6% 26px;
        border-top:1px solid var(--line);
        border-radius:0 0 var(--radius) var(--radius);
        background:var(--white);
        box-shadow:var(--shadow);
        transition:
            opacity var(--transition),
            visibility var(--transition),
            transform var(--transition);
    }

    header nav.show{
        visibility:visible;
        opacity:1;
        transform:none;
    }

    header nav ul{
        flex-direction:column;
        align-items:stretch;
        gap:0;
    }

    header nav li{
        border-bottom:1px solid #f0ebe3;
    }

    header nav li:last-child{
        border-bottom:none;
    }

    nav a{
        display:block;
        padding:15px 4px;
        font-size:1.1rem;
    }

    nav a::after{
        display:none;
    }

    nav a.is-active{
        color:var(--gold-dark);
        font-weight:700;
    }
}

@media (max-width:900px){

    .hero{
        padding:calc(var(--header-height) + 40px) 20px 70px;
    }

    .hero-buttons{
        flex-direction:column;
        align-items:center;
    }

    .about-container{
        grid-template-columns:1fr;
        text-align:center;
    }

    .about-image img{
        max-width:320px;
    }

    .footer-grid{
        grid-template-columns:1fr 1fr;
    }

    .footer-grid > div:first-child{
        grid-column:1 / -1;
    }

    .publication-item{
        grid-template-columns:1fr;
    }
}

@media (max-width:600px){

    body{
        font-size:1rem;
    }

    .form-grid{
        grid-template-columns:1fr;
    }

    form .btn{
        width:100%;
    }

    .articles-grid{
        grid-template-columns:1fr;
    }

    .article-card{
        padding:24px;
    }

    .modal-content{
        padding:40px 24px 30px;
    }

    .footer-grid{
        grid-template-columns:1fr;
    }

    .whatsapp{
        width:56px;
        height:56px;
        font-size:1.8rem;
        left:16px;
        bottom:max(18px,env(safe-area-inset-bottom));
    }

    #backToTop{
        left:19px;
        bottom:max(86px,calc(env(safe-area-inset-bottom) + 66px));
        width:46px;
        height:46px;
    }

    .publication-list li{
        padding:14px 16px;
        font-size:1rem;
    }

    .lightbox-prev,
    .lightbox-next{
        top:auto;
        bottom:18px;
        margin-top:0;
    }
}

@media (max-width:480px){

    .hero h1{
        font-size:2.1rem;
    }

    .hero-buttons .btn{
        width:100%;
        max-width:300px;
    }
}


/* ======================================================
   19 MOTION
====================================================== */

/* Reveal-on-scroll: only when JS is running and motion is welcome,
   so the page is never left blank for anyone else. */

@media (scripting:enabled) and (prefers-reduced-motion:no-preference){

    .reveal{
        opacity:0;
        transform:translateY(26px);
        transition:
            opacity .7s ease var(--reveal-delay,0ms),
            transform .7s ease var(--reveal-delay,0ms);
    }

    .reveal.is-visible{
        opacity:1;
        transform:none;
    }
}

@media (prefers-reduced-motion:reduce){

    *,
    *::before,
    *::after{
        animation:none !important;
        transition:none !important;
        scroll-behavior:auto !important;
    }
}