/* =============================================
   نيورون - layout.css
   التخطيط: Header, Footer, Grid, Sections
   ============================================= */

/* ==============================
   القسم العام (Sections)
   ============================== */
.section {
  width: 100%;
  padding-block: var(--space-16);
}

.section--full {
  padding-block: 0;
}

/* منع التمرير عند فتح القائمة */
html.menu-open,
html.menu-open body {
  overflow: hidden !important;
  height: 100% !important;
}

/* ==============================
   Header
   ============================== */
.header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: var(--z-header);
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color var(--transition-base);
}

.header.scrolled {
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
}

[data-theme="light"] .header.scrolled {
  background-color: rgba(255, 255, 255, 0.9);
}

/* --- شريط تقدم القراءة --- */
.reading-progress {
  position: absolute;
  bottom: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(to left,
      var(--color-pink, #ff3cac),
      var(--color-purple, #784ba0),
      var(--color-pink, #ff3cac));
  background-size: 200% 100%;
  animation: progressGradient 3s linear infinite;
  transform-origin: right center;
  transform: scaleX(0);
  transition: transform 0.1s linear;
  pointer-events: none;
  z-index: 1;
}

@keyframes progressGradient {
  0% {
    background-position: 0% 50%;
  }

  100% {
    background-position: 200% 50%;
  }
}

/* --- الشعار (يمين) --- */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.header__logo .logo-text {
  display: block;
  height: 48px;
  width: auto;
  transition: height var(--transition-base);
}

/* --- التنقل الرئيسي - ديسكتوب (يسار) --- */
.header__desktop-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  /* إبعاد الأزرار (الروابط) عن بعضها */
}

.header__nav-link {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  /* تكبير حجم الخط */
  font-weight: 500;
  color: var(--text-primary);
  padding: var(--space-2) var(--space-4);
  transition: color var(--transition-fast);
  white-space: nowrap;
  position: relative;
  /* من أجل الخط السفلي */
}

.header__nav-link:hover {
  color: var(--color-pink);
}

.header__nav-link.active {
  color: var(--color-pink);
}

/* --- خطوط التحديد (Active Underlines) --- */
.header__nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  height: 10px;
  background-position: center top;
  background-repeat: no-repeat;
  background-size: contain;
}

.header__nav-link[href="about.html"].active::after {
  background-image: url('../images/svg/Us-underline.svg');
}

.header__nav-link[href="works.html"].active::after,
.header__nav-link[href="services.html"].active::after {
  background-image: url('../images/svg/Works-underline.svg');
}

.header__nav-link[href="brains.html"].active::after {
  background-image: url('../images/svg/Us-underline.svg');
}

/* --- زر CTA --- */
.header__cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: 1px solid var(--bg-border);
  border-radius: 12px;
  padding: 8px 24px;
  min-height: 44px;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.header__cta-btn:hover {
  border-color: var(--color-pink);
  color: var(--color-pink);
}

.header__cta-text {
  /* ورث التنسيق من الزر الأب */
}

/* --- أزرار الموبايل --- */
.header__mobile-actions {
  display: none;
  align-items: center;
  gap: var(--space-2);
}



/* --- nav-toggle: زر الهامبرغر الاحترافي --- */
.nav-toggle {
  appearance: none;
  background: rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: none;
  border-radius: 14px;
  width: 48px;
  height: 48px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  position: relative;
  z-index: 1001;
  transition: background 0.3s ease, transform 0.3s ease;
}

[data-theme="light"] .nav-toggle {
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-toggle:hover {
  background: rgba(0, 0, 0, 0.4);
  transform: scale(1.05);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-pink);
  outline-offset: 2px;
}

/* الخطوط الثلاثة */
.nav-toggle__lines {
  width: 22px;
  height: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle__lines span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55),
              opacity 0.3s ease,
              width 0.3s ease;
  transform-origin: center;
}

.nav-toggle__lines span:nth-child(2) {
  width: 65%;
  transition: width 0.3s ease, opacity 0.3s ease;
}

/* hover: الخط الأوسط يتمدد */
.nav-toggle:hover .nav-toggle__lines span:nth-child(2) {
  width: 100%;
}

/* عند الفتح: تحويل إلى X */
.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* عند الفتح: لون وردي */
.nav-toggle[aria-expanded="true"] .nav-toggle__lines span {
  background-color: var(--color-pink);
}

/* --- خط فاصل متدرج --- */
.nav-menu__divider {
  width: 80%;
  max-width: 300px;
  height: 1px;
  background: linear-gradient(to left, transparent, var(--color-pink), transparent);
  margin: 0 auto var(--space-8);
  opacity: 0.4;
}

/* --- روابط القائمة --- */
.nav-menu__links {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  width: 100%;
}

.nav-menu__links a {
  display: block;
  text-align: center;
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--text-primary);
  padding: var(--space-4) 0;
  transition: color 0.3s ease, transform 0.3s ease, letter-spacing 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

/* ظهور متتابع عند الفتح */
.nav-menu[data-open="true"] .nav-menu__links a {
  opacity: 1;
  transform: translateY(0);
}

.nav-menu[data-open="true"] .nav-menu__links a:nth-child(1) { transition-delay: 0.1s; }
.nav-menu[data-open="true"] .nav-menu__links a:nth-child(2) { transition-delay: 0.18s; }
.nav-menu[data-open="true"] .nav-menu__links a:nth-child(3) { transition-delay: 0.26s; }
.nav-menu[data-open="true"] .nav-menu__links a:nth-child(4) { transition-delay: 0.34s; }
.nav-menu[data-open="true"] .nav-menu__links a:nth-child(5) { transition-delay: 0.42s; }

.nav-menu__links a:hover {
  color: var(--color-pink);
  transform: translateX(-8px);
  letter-spacing: 1px;
}

/* الرابط النشط في القائمة */
.nav-menu__links a.active {
  color: var(--color-pink);
  position: relative;
}

.nav-menu__links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 12px;
  background-image: url('../images/svg/Works-underline.svg');
  background-position: center top;
  background-repeat: no-repeat;
  background-size: contain;
}

/* ==============================
   nav-menu: القائمة الكاملة
   ============================== */
.nav-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-block: 100px 40px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  /* الإخفاء الافتراضي */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* الظهور عند data-open */
.nav-menu[data-open="true"] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* رأس القائمة */
.nav-menu__header {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* زر الإغلاق داخل القائمة */
.nav-close {
  appearance: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  border-radius: 14px;
  transition: background 0.2s ease;
}

.nav-close:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-close:focus-visible {
  outline: 2px solid var(--color-pink);
  outline-offset: 2px;
}

.nav-close svg {
  width: 28px;
  height: 28px;
}

/* روابط التنقل الرئيسية */
.nav-menu__links {
  text-align: center;
  margin-bottom: var(--space-12);
}

.nav-menu__links a {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--text-primary);
  padding: var(--space-3) 0;
  transition: color 0.2s ease, transform 0.2s ease;
}

.nav-menu__links a:hover {
  color: var(--color-pink);
  transform: translateX(-8px);
}

.nav-menu__cta {
  margin-bottom: var(--space-8);
}

.nav-menu__newsletter {
  max-width: 400px;
  width: 100%;
  padding-inline: var(--space-4);
  margin-bottom: var(--space-6);
}

.nav-menu__newsletter-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.nav-menu__social {
  display: flex;
  gap: var(--space-6);
}

.nav-menu__social a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.nav-menu__social a:hover {
  color: var(--color-pink);
}

/* --- روابط قانونية في القائمة --- */
.nav-menu__legal {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.nav-menu__legal a {
  font-size: var(--text-xs);
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.nav-menu__legal a:hover {
  color: var(--color-pink);
}

.nav-menu__legal span {
  color: var(--bg-border);
  font-size: var(--text-xs);
}

/* ==============================
   Footer  
   ============================== */
.footer {
  background-color: var(--bg-secondary);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--bg-border);
}

.footer__social {
  display: flex;
  gap: var(--space-4);
}

.footer__social a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__social a:hover {
  color: var(--color-pink);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  flex-wrap: wrap;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer__social {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__social a {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background-color: transparent;
  border: 1px solid var(--bg-border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.footer__social a:hover {
  border-color: var(--color-pink);
  color: var(--color-pink);
}

.footer__social a::after {
  display: none;
}

.footer__social svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
}

.footer__privacy {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer__privacy a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__privacy a:hover {
  color: var(--color-pink);
}

/* ==============================
   Let's Talk Section
   ============================== */
.lets-talk {
  padding: var(--space-16) 0;
  text-align: center;
}

.lets-talk__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--text-primary);
  transition: color var(--transition-fast), gap var(--transition-base);
}

.lets-talk__link:hover {
  color: var(--color-pink);
}

.lets-talk__link svg {
  width: 63px;
  height: auto;
  transform: rotate(180deg);
  transition: transform var(--transition-base);
}

.lets-talk__link:hover svg {
  transform: rotate(180deg) translateX(12px);
}

.lets-talk__label {
  font-size: var(--text-lg);
  color: var(--color-pink);
  display: block;
  margin-bottom: var(--space-1);
}

/* ==============================
   استجابة
   ============================== */
@media (max-width: 991px) {

  /* في التابلت والموبايل: إخفاء التنقل الديسكتوب وإظهار الهامبرغر */
  .header__desktop-nav {
    display: none;
  }

  .header__mobile-actions {
    display: flex;
  }

  .header__logo .logo-text {
    height: 36px;
  }

  .fullscreen-menu__nav a {
    font-size: var(--text-4xl);
  }

  .lets-talk__link {
    font-size: var(--text-3xl);
  }

  .lets-talk__link svg {
    width: 40px;
  }
}

@media (max-width: 767px) {
  .header {
    padding: var(--space-3) var(--space-6);
    /* زيادة الهامش الأفقي */
  }

  .header__logo .logo-text {
    height: 36px;
  }

  .fullscreen-menu__header {
    padding: var(--space-3) var(--space-6);
  }

  .fullscreen-menu__nav a {
    font-size: var(--text-3xl);
    padding: var(--space-2) 0;
  }

  .lets-talk__link {
    font-size: var(--text-2xl);
    flex-direction: column;
    gap: var(--space-2);
  }

  .lets-talk__link svg {
    width: 32px;
    transform: rotate(180deg);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}