/* drdiyaalmasri.com: plain CSS, logical properties only (RTL first) */
@font-face{font-family:Cairo;font-style:normal;font-weight:400 800;font-display:swap;src:url(../fonts/cairo-ar.woff2) format("woff2");unicode-range:U+0600-06FF,U+0750-077F,U+FB50-FDFF,U+FE70-FEFF,U+200C-200F}
@font-face{font-family:Cairo;font-style:normal;font-weight:400 800;font-display:swap;src:url(../fonts/cairo-lat.woff2) format("woff2");unicode-range:U+0000-00FF,U+2010-2027,U+2190-2194,U+2212,U+2248,U+2264-2265}

/*THEME_START*/
:root{--ivory:#F7F5EF;--paper:#FDFCFA;--teal:#0F4C4F;--teal-dk:#0B3739;--aqua:#7FB5B0;--aqua-lt:#DFE8E2;--copper:#A25A28;--ink:#1E2A2C;--muted:#545D5D;--line:rgba(15,76,79,.16)}
/*THEME_END*/
:root{--r:14px;--w:1120px;--gap:clamp(1rem,3vw,2rem)}
[hidden]{display:none!important}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ivory);color:var(--ink);font:400 1.0625rem/1.85 Cairo,"Segoe UI",Tahoma,"Noto Naskh Arabic",system-ui,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-underline-offset:.25em}
a:hover{color:var(--copper)}
:focus-visible{outline:3px solid var(--copper);outline-offset:3px;border-radius:4px}
h1,h2,h3{font-weight:700;line-height:1.4;color:var(--teal);margin:0 0 .6em}
h1{font-size:clamp(1.9rem,5.2vw,3rem);font-weight:800}
h2{font-size:clamp(1.45rem,3.4vw,2rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.ltr{direction:ltr;unicode-bidi:isolate;display:inline-block;font-weight:600}
.wrap{width:min(100% - 2*var(--gap),var(--w));margin-inline:auto}
.skip{position:absolute;inset-inline-start:1rem;top:-4rem;background:var(--copper);color:#fff;padding:.5rem 1rem;border-radius:8px;z-index:20}
.skip:focus{top:.5rem}

/* header: sticky, deep teal so the gold signature reads */
.site-header{position:sticky;top:0;z-index:10;background:var(--teal);border-block-end:1px solid var(--teal-dk)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.25rem 1.5rem;padding-block:.5rem}
.brand{display:block;line-height:0}
.brand img{height:44px;width:auto}
.nav{display:flex;gap:.25rem;overflow-x:auto;scrollbar-width:none;max-width:100%}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--ivory);text-decoration:none;font-weight:600;font-size:.95rem;padding:.4rem .8rem;border-radius:999px;white-space:nowrap}
.nav a:hover{background:rgba(247,245,239,.12);color:#fff}
.nav a[aria-current=page]{background:var(--ivory);color:var(--teal)}
@media (max-width:640px){.site-header .wrap{justify-content:center}.nav{width:100%;justify-content:safe center}.nav a{padding:.3rem .55rem;font-size:.85rem}}

/* sections */
section{padding-block:clamp(2.5rem,7vw,4.5rem)}
.eyebrow{display:inline-block;color:var(--copper);font-weight:700;font-size:.9rem;letter-spacing:.02em;margin-block-end:.5rem}
.lead{font-size:1.15rem;color:var(--muted);max-width:44rem}
.alt{background:var(--paper);border-block:1px solid var(--line)}

/* hero */
.hero{padding-block:clamp(2rem,6vw,4rem) 0}
.hero-grid{display:grid;gap:var(--gap);align-items:end}
.hero-text{padding-block-end:clamp(1.5rem,5vw,3.5rem)}
.hero h1{margin-block-end:.15em}
.title-line{color:var(--copper);font-weight:700;font-size:1.2rem;margin-block-end:1.1rem}
.hero-photo{background:radial-gradient(closest-side,var(--aqua-lt),transparent 92%);justify-self:center;width:min(100%,420px)}
.btns{display:flex;flex-wrap:wrap;gap:.75rem;margin-block-start:1.5rem}
.btn{display:inline-block;text-decoration:none;font-weight:700;padding:.7rem 1.4rem;border-radius:999px;border:2px solid var(--teal);background:var(--teal);color:var(--ivory)}
.btn:hover{background:var(--teal-dk);color:#fff}
.btn.ghost{background:transparent;color:var(--teal)}
.btn.ghost:hover{background:var(--aqua-lt);color:var(--teal-dk)}
@media (min-width:820px){.hero-grid{grid-template-columns:1.15fr .85fr}}

/* cards */
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));margin-block-start:1.5rem}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.25rem 1.4rem}
.card h3{margin-block-end:.35em}
.card p{margin:0;color:var(--muted);font-size:1rem;line-height:1.8}
.alt .card{background:var(--ivory)}
.tag{display:inline-block;font-size:.8rem;font-weight:700;color:var(--copper);border:1px solid var(--copper);border-radius:999px;padding:0 .7rem;margin-block-end:.6rem}
.terr .card{border-inline-start:4px solid var(--copper)}
.terr .label{display:block;direction:ltr;unicode-bidi:isolate;text-align:end;font-weight:800;letter-spacing:.12em;font-size:.95rem;color:var(--copper);margin-block-end:.3rem}

/* partners + products */
.partners{display:grid;gap:1rem;grid-template-columns:repeat(2,1fr);margin-block-start:1.5rem}
@media (min-width:900px){.partners{grid-template-columns:repeat(4,1fr)}}
@media (max-width:480px){.partners{grid-template-columns:1fr}}
.partner{text-align:center}
.partner img{height:56px;width:auto;max-width:100%;object-fit:contain;margin:0 auto .7rem}
.partner a{font-size:.95rem;font-weight:600}
.product .tag{margin-block-end:.5rem}
.product img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;margin-block-end:.8rem}
.product .price{font-weight:700;color:var(--copper);margin-block:.6rem .2rem}
.product .btn{margin-block-start:.6rem}

/* quote strip */
.quote{background:var(--teal);color:var(--ivory);text-align:center;padding-block:clamp(2.2rem,6vw,3.5rem)}
.quote p{margin:0 auto;max-width:46rem;font-size:clamp(1.25rem,3.2vw,1.8rem);font-weight:700;line-height:1.7}
.quote small{display:block;margin-block-start:.6rem;color:var(--aqua);font-size:1rem;font-weight:400}

/* equation + steps (series) */
.equation{display:flex;flex-wrap:wrap;gap:.5rem 1rem;align-items:center;justify-content:center;margin-block:1.5rem 0;font-weight:700;color:var(--teal);font-size:1.15rem}
.equation>span{background:var(--aqua-lt);border:1px solid var(--line);border-radius:999px;padding:.2rem 1rem}
.equation b{color:var(--copper);font-size:1.5rem}
.steps{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;gap:1rem;counter-reset:s}
.steps li{counter-increment:s;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.1rem 1.4rem 1.1rem 1.4rem;padding-inline-start:4.2rem;position:relative}
.steps li::before{content:counter(s);position:absolute;inset-inline-start:1.2rem;top:1rem;width:2.1rem;height:2.1rem;border-radius:50%;background:var(--teal);color:var(--ivory);font-weight:700;display:grid;place-items:center;font-size:1rem}
.steps h3{margin-block-end:.2em}
.steps p{margin:0 0 .4em;color:var(--muted)}
.wip{display:inline-block;font-size:.8rem;font-weight:700;color:var(--muted);background:var(--aqua-lt);border-radius:999px;padding:0 .7rem}

/* about + articles */
.about-grid{display:grid;gap:var(--gap);align-items:start}
.about-photo{border-radius:var(--r);border:1px solid var(--line);overflow:hidden;max-width:420px}
@media (min-width:820px){.about-grid{grid-template-columns:1.3fr .7fr}}
.list{padding-inline-start:1.2rem;margin:0 0 1em}
.list li{margin-block-end:.4em}
.note{background:var(--aqua-lt);border:1px dashed var(--teal);border-radius:var(--r);padding:1rem 1.25rem;color:var(--teal-dk);font-weight:600}
.article{max-width:46rem}
.article section{padding-block:1.2rem}
.article .meta{color:var(--muted);font-size:.95rem}
.crumbs{font-size:.92rem;color:var(--muted);margin-block-end:1rem}
.empty{color:var(--muted)}

/* footer */
.site-footer{background:var(--teal-dk);color:#D5E4E1;padding-block:2.5rem;font-size:.97rem;line-height:1.8}
.site-footer a{color:var(--aqua)}
.site-footer .cols{display:grid;gap:1.5rem}
.site-footer strong{color:var(--ivory)}
.disclaimer{border-block-start:1px solid rgba(255,255,255,.15);margin-block-start:1.5rem;padding-block-start:1.2rem;color:#BFD3CF}
@media (min-width:820px){.site-footer .cols{grid-template-columns:1.2fr 1fr}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}