/* Rekaz - Intelligent Architecture Theme */
:root {
  /* Core palette */
  --color-primary: #7b42c6;
  --color-primary-rgb: 123,66,198;

  /* Default (dark) theme */
  --color-bg: #0d0b11;
  --color-bg-alt: #16131d;
  --color-surface: rgba(255,255,255,0.08);
  --color-text: #f5f5f8;
  --color-text-dim: #b6adc8;
  --border-color: rgba(255,255,255,0.15);
  --border-color-strong: rgba(255,255,255,0.2);
  --app-bg-gradient: radial-gradient(circle at 20% 20%,#241631,#0d0b11 60%);
  --project-bg: linear-gradient(135deg,#22152f,#15101d);

  /* Shared */
  --blur-strength: 18px;
  --radius-sm: 8px;
  --radius: 16px;
  --gradient-primary: linear-gradient(135deg,#7b42c6,#b084ff 55%,#fff 120%);
  --shadow-soft: 0 4px 18px -4px rgba(123,66,198,0.45),0 2px 4px -1px rgba(0,0,0,0.4);
  --transition: 0.55s cubic-bezier(.23,1,.32,1);
}

/* Light theme overrides */
.light {
  --color-bg: #f6f5fb;
  --color-bg-alt: #ffffff;
  --color-surface: rgba(255,255,255,0.65);
  --color-text: #1f0f33;
  --color-text-dim: #5d4d73;
  --border-color: rgba(123,66,198,0.22);
  --border-color-strong: rgba(123,66,198,0.32);
  --app-bg-gradient: radial-gradient(circle at 20% 20%, #efe7fa, #ffffff 60%);
  --project-bg: linear-gradient(135deg,#f4eefb,#e7ddf7);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Tajawal', system-ui, sans-serif;
  background: var(--app-bg-gradient) fixed;
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.8s ease, color .6s ease;
}

/* Performance utility for large sections */
.perf-section { content-visibility: auto; contain-intrinsic-size: 1000px 800px; }

/* Reduce expensive blur intensity on very small screens */
@media (max-width:480px){
  :root { --blur-strength: 14px; }
}

/* Low power mode (simulated through prefers-reduced-motion) */
@media (prefers-reduced-motion: reduce){
  .icon::after, .icon::before, .service-card { animation: none !important; }
}

.arabic { font-weight: 600; letter-spacing: .5px; }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; z-index: 1000;
  backdrop-filter: blur(var(--blur-strength)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--blur-strength)) saturate(160%);
  background: linear-gradient(120deg,rgba(255,255,255,0.12),rgba(255,255,255,0.04));
  border-bottom: 1px solid var(--border-color);
}
.logo { font-weight: 800; font-size: 1.25rem; background: var(--gradient-primary); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo img.brand-logo { display: block; height: 40px; width: auto; filter: drop-shadow(0 2px 6px rgba(var(--color-primary-rgb),0.45)); transition: transform .6s ease, filter .6s ease; }
.logo img.brand-logo:hover { transform: scale(1.04) rotate(-1deg); }
.main-nav { display: flex; align-items: center; gap: .5rem; }
.main-nav a { color: var(--color-text); text-decoration: none; margin: 0 .75rem; font-weight: 500; position: relative; padding: .4rem .2rem; }
.main-nav a::after { content: ''; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--gradient-primary); transition: width .4s ease; border-radius: 2px; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: .75rem; }
.theme-toggle { background: rgba(255,255,255,0.1); border: 1px solid var(--border-color-strong); color: var(--color-text); width: 40px; height: 40px; border-radius: 50%; cursor: pointer; font-size: 1.1rem; display: grid; place-items: center; backdrop-filter: blur(var(--blur-strength)); transition: var(--transition); }
.lang-toggle { background: rgba(255,255,255,0.1); border: 1px solid var(--border-color-strong); color: var(--color-text); height:40px; padding:0 .9rem; border-radius: 14px; cursor:pointer; font-weight:600; letter-spacing:.5px; font-size:.7rem; display:flex; align-items:center; backdrop-filter: blur(var(--blur-strength)); transition: var(--transition); text-transform:uppercase; }
.lang-toggle:hover { background: rgba(var(--color-primary-rgb),0.35); box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb),0.25); }
.nav-toggle { display: none; position: relative; width: 46px; height: 46px; border-radius: 14px; background: rgba(255,255,255,0.08); border: 1px solid var(--border-color-strong); cursor: pointer; overflow: hidden; backdrop-filter: blur(var(--blur-strength)); transition: var(--transition); }
.nav-toggle .bar { position: absolute; left: 11px; right: 11px; height: 2.8px; background: var(--color-text); border-radius: 4px; transition: transform .55s var(--transition), top .55s var(--transition), opacity .4s ease; }
.nav-toggle .bar:nth-child(1){ top: 15px; }
.nav-toggle .bar:nth-child(2){ top: 22px; }
.nav-toggle .bar:nth-child(3){ top: 29px; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1){ top: 22px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2){ opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3){ top: 22px; transform: rotate(-45deg); }
.theme-toggle:hover { background: rgba(123,66,198,0.3); box-shadow: 0 0 0 4px rgba(123,66,198,0.25); }

/* RTL adjustments */
html[dir='rtl'] body { direction: rtl; }
html[dir='rtl'] .main-nav a, html[dir='rtl'] .drawer-nav a { text-align: right; }
html[dir='rtl'] .cta-group { flex-direction: row-reverse; }
html[dir='rtl'] .modal-close { right: auto; left: .6rem; }
html[dir='rtl'] .mobile-drawer { right: auto; left: 0; border-left: none; border-right: 1px solid var(--border-color); transform: translateX(-105%); }
html[dir='rtl'] .mobile-drawer.open { transform: translateX(0); }

.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 0 clamp(1rem,6vw,7rem); }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
#crystalCanvas { width: 100%; height: 100%; display: block; }
.hero-content { position: relative; z-index: 2; max-width: 920px; }
.hero h1 { font-size: clamp(2.6rem,5vw,4.2rem); line-height: 1.1; margin: 0 0 1rem; }
.hero .subt { font-size: clamp(1.2rem,3vw,2rem); display: block; margin-top: .75rem; }
.lead { font-size: 1.2rem; max-width: 640px; margin-bottom: 2rem; color: var(--color-text-dim); }

.btn { --btn-bg: rgba(255,255,255,0.1); position: relative; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .9rem 1.4rem; font-size: .95rem; font-weight: 600; letter-spacing: .5px; border-radius: var(--radius-sm); color: var(--color-text); text-decoration: none; overflow: hidden; backdrop-filter: blur(calc(var(--blur-strength) * .7)); border: 1px solid rgba(255,255,255,0.2); cursor: pointer; transition: var(--transition); }
.btn.primary { background: linear-gradient(135deg, rgba(var(--color-primary-rgb),0.85), rgba(var(--color-primary-rgb),0.55)); box-shadow: 0 8px 24px -6px rgba(var(--color-primary-rgb),0.55); }
.btn.ghost { background: var(--btn-bg); }
.btn.full { width: 100%; }
.btn:hover, .btn:focus-visible { box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb),0.35), 0 8px 32px -4px rgba(var(--color-primary-rgb),0.6); transform: translateY(-3px); }
.btn:active { transform: translateY(0); }

.section { padding: clamp(3.5rem,10vh,7.5rem) clamp(1rem,5.5vw,5.5rem); position: relative; }
.section-head { max-width: 860px; margin: 0 auto 3.5rem; text-align: center; }
.section-head h2 { font-size: clamp(2rem,4vw,3rem); margin: 0 0 .75rem; letter-spacing: .5px; }
.section-head p { color: var(--color-text-dim); margin: 0; }

.service-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit,minmax(min(100%,260px),1fr)); }
.service-card { padding: 1.75rem 1.5rem 1.9rem; border-radius: var(--radius); position: relative; overflow: hidden; border: 1px solid var(--border-color); animation: floatCard 9s ease-in-out infinite; will-change: transform; }
.service-card::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 30% 20%, rgba(var(--color-primary-rgb),0.35), transparent 60%); opacity: 0; transition: opacity .8s ease; }
.service-card:hover::before { opacity: 1; }
.service-card h3 { margin: 1rem 0 .75rem; font-size: 1.25rem; }
.service-card p { margin: 0; color: var(--color-text-dim); font-size: .95rem; }
.icon { width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(145deg, rgba(var(--color-primary-rgb),0.7), rgba(var(--color-primary-rgb),0.4)); backdrop-filter: blur(calc(var(--blur-strength) * .55)); border: 1px solid rgba(255,255,255,0.2); box-shadow: var(--shadow-soft); position: relative; overflow: hidden; }
.icon::after, .icon::before { content: ''; position: absolute; inset: 0; background: conic-gradient(from 0deg, rgba(255,255,255,0.6), transparent 60%); mix-blend-mode: overlay; animation: spin 6s linear infinite; }
.icon::before { animation-direction: reverse; animation-duration: 10s; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes floatCard { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.showcase { background: radial-gradient(circle at 80% 20%, rgba(var(--color-primary-rgb),0.25), transparent 60%); }
.projects-grid { display: grid; gap: 1.75rem; grid-template-columns: repeat(auto-fit,minmax(min(100%,280px),1fr)); }
.project { position: relative; border-radius: var(--radius); overflow: hidden; cursor: pointer; aspect-ratio: 4/3; display: flex; align-items: flex-end; padding: 1rem; background: var(--project-bg); border: 1px solid var(--border-color); isolation: isolate; will-change: transform, opacity; }
.project::before { content: ''; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(var(--color-primary-rgb),0.7), transparent 60%); opacity: 0; transition: opacity .6s ease; z-index: 0; }
.project:hover::before { opacity: .9; }
.project h3 { margin: 0; font-size: 1.1rem; z-index: 1; }

.contact-form { max-width: 760px; margin: 0 auto; padding: 2.5rem 2rem; border-radius: calc(var(--radius) + 4px); border: 1px solid var(--border-color); }
.form-row { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.field { flex: 1 1 240px; display: flex; flex-direction: column; margin-bottom: 1.25rem; }
label { font-size: .85rem; text-transform: uppercase; letter-spacing: .7px; font-weight: 600; margin-bottom: .4rem; }
input, textarea { font: inherit; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius-sm); padding: .85rem .9rem; color: var(--color-text); resize: vertical; backdrop-filter: blur(calc(var(--blur-strength) * .5)); transition: border-color .3s, background .4s; }
input:focus, textarea:focus { outline: none; border-color: var(--color-primary); background: rgba(var(--color-primary-rgb),0.18); }
.error { color: #ff6b6b; font-size: .7rem; min-height: 1em; margin-top: .3rem; }
.form-status { margin-top: 1rem; font-size: .8rem; letter-spacing: .5px; }

.site-footer { text-align: center; padding: 3rem 1rem 4rem; font-size: .8rem; color: var(--color-text-dim); }

.modal { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity .5s ease; z-index: 2000; }
.modal.show { opacity: 1; pointer-events: auto; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(10,6,18,0.75); backdrop-filter: blur(12px); }
.modal-dialog { position: relative; width: min(880px,92%); padding: 2.2rem 2rem 2.4rem; border-radius: calc(var(--radius) + 6px); border: 1px solid var(--border-color-strong); max-height: 80vh; overflow-y: auto; }
.modal-close { position: absolute; top: .6rem; right: .6rem; background: rgba(255,255,255,0.1); border: 1px solid var(--border-color-strong); color: var(--color-text); width: 38px; height: 38px; border-radius: 50%; font-size: 1.2rem; cursor: pointer; transition: var(--transition); }
.modal-close:hover { background: rgba(var(--color-primary-rgb),0.4); }

/* Glass utility */
.glass { background: var(--color-surface); backdrop-filter: blur(var(--blur-strength)) saturate(180%); -webkit-backdrop-filter: blur(var(--blur-strength)) saturate(180%); border: 1px solid var(--border-color); }

/* Light theme specific tweaks */
.light .project::before { background: linear-gradient(160deg, rgba(var(--color-primary-rgb),0.3), transparent 60%); }
.light .service-card::before { background: radial-gradient(circle at 30% 20%, rgba(var(--color-primary-rgb),0.55), transparent 60%); }
.light .site-footer { color: var(--color-text-dim); }

/* Improve contrast in light */
.light input, .light textarea { background: rgba(255,255,255,0.9); color: var(--color-text); border-color: var(--border-color); }
.light input:focus, .light textarea:focus { background: rgba(255,255,255,1); }

/* Scroll animations */
[data-animate] { opacity: 0; transform: translateY(40px); transition: opacity .9s ease, transform 1.2s var(--transition); }
[data-animate].visible { opacity: 1; transform: translateY(0); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  [data-animate] { opacity: 1 !important; transform: none !important; }
}

/* Medium breakpoint adjustments */
@media (max-width: 1100px) {
  .hero h1 { font-size: clamp(2.3rem,5.6vw,3.6rem); }
}

/* Mobile navigation */
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  /* Hide desktop inline nav on mobile */
  .main-nav { display: none; }
  .mobile-drawer { position: fixed; top: 0; bottom: 0; right: 0; width: min(320px,80%); background: var(--color-bg-alt); background-image: linear-gradient(180deg, rgba(var(--color-primary-rgb),0.16), rgba(var(--color-primary-rgb),0) 55%); border-left: 1px solid var(--border-color); transform: translateX(105%); transition: transform .55s cubic-bezier(.7,.02,.25,1); z-index: 1001; padding-top: 72px; display: flex; flex-direction: column; overscroll-behavior: contain; }
  .light .mobile-drawer { background: #ffffff; background-image: linear-gradient(180deg, rgba(var(--color-primary-rgb),0.08), rgba(var(--color-primary-rgb),0) 55%); }
  .mobile-drawer.open { transform: translateX(0); box-shadow: -4px 0 22px -6px rgba(0,0,0,0.5); }
  .drawer-nav { display: flex; flex-direction: column; padding: 0 clamp(1.2rem,4vw,1.8rem); }
  .drawer-nav a { position: relative; display: block; padding: .95rem 0 1rem; font-size: 1.05rem; letter-spacing: .35px; border-bottom: 1px solid var(--border-color); text-decoration: none; color: var(--color-text); }
  .drawer-nav a:last-child { border-bottom: none; }
  .drawer-nav a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
  .drawer-nav a::after { content:''; position:absolute; left:0; top:0; bottom:0; width:0; background: linear-gradient(90deg, rgba(var(--color-primary-rgb),0.3), rgba(var(--color-primary-rgb),0)); transition: width .5s ease; }
  .drawer-nav a:hover::after, .drawer-nav a:focus-visible::after { width:100%; }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(10,6,18,0.55); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); opacity: 0; transition: opacity .45s ease; z-index: 1000; }
  .nav-backdrop.show { opacity: 1; }
  body.menu-open { overflow: hidden; }
  .hero { padding-top: 4rem; }
}

/* Small screens */
@media (max-width: 560px) {
  .hero h1 { font-size: clamp(2rem,9vw,3.1rem); }
  .lead { font-size: 1.05rem; }
  .cta-group .btn { padding: .85rem 1.1rem; }
  .site-header { padding: 0 1.1rem; }
  .logo img.brand-logo { height: 34px; }
}