/* ===== קמפוס ההנדסאים - עיצוב כללי ===== */

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #60a5fa;
  --color-primary-glow: rgba(37, 99, 235, 0.4);
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;
  --color-accent-light: #fcd34d;

  --color-bg: #edf1fb;
  --color-surface: #ffffff;
  --color-surface-2: #f5f8ff;
  --color-text: #0d1526;
  --color-text-muted: #5a6a84;
  --color-border: #d8e0ee;
  --color-border-soft: #eaeff8;

  --color-header-bg: #080f1e;
  --color-header-text: #f1f5f9;

  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --gradient-hero: linear-gradient(135deg, #080f1e 0%, #132150 50%, #080f1e 100%);
  --gradient-card: linear-gradient(160deg, #f5f8ff 0%, #ffffff 100%);

  --shadow-sm: 0 1px 4px rgba(13, 21, 38, 0.08), 0 1px 2px rgba(13, 21, 38, 0.04);
  --shadow-md: 0 4px 20px rgba(13, 21, 38, 0.11), 0 2px 8px rgba(13, 21, 38, 0.06);
  --shadow-lg: 0 16px 48px rgba(13, 21, 38, 0.16), 0 4px 14px rgba(13, 21, 38, 0.08);
  --shadow-glow: 0 0 28px rgba(37, 99, 235, 0.3);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --header-height: 68px;
  --font-main: "Rubik", "Segoe UI", Tahoma, Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  direction: rtl;
}

img, canvas, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ===== ניווט עליון ===== */

.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 4vw, 48px);
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--color-header-text);
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.3px;
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient-primary);
  font-size: 1.15rem;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.45);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(6px, 2vw, 24px);
}

.main-nav a {
  position: relative;
  padding: 8px 6px;
  font-size: 0.95rem;
  color: rgba(241, 245, 249, 0.75);
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: #fff;
}

.main-nav a.active {
  color: #fff;
  font-weight: 600;
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  right: 0;
  left: 0;
  bottom: -4px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-accent);
}

.nav-cta {
  padding: 9px 20px;
  border-radius: 999px;
  background: var(--gradient-accent);
  color: #1a0c00;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.45);
  color: #1a0c00;
}

.nav-login-btn {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 999px;
  padding: 6px 18px;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all 0.18s;
}
.nav-login-btn:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ===== כפתורים כלליים ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
  color: #fff;
  box-shadow:
    0 4px 20px rgba(37, 99, 235, 0.50),
    0 1px 0 rgba(255, 255, 255, 0.15) inset,
    0 -1px 0 rgba(0, 0, 0, 0.15) inset;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow:
    0 10px 32px rgba(37, 99, 235, 0.60),
    0 1px 0 rgba(255, 255, 255, 0.18) inset,
    0 0 0 1px rgba(96, 165, 250, 0.3);
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

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

/* ===== תוכן כללי ===== */

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
}

/* ===== פוטר ===== */

.site-footer {
  text-align: center;
  padding: 28px 16px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  background: var(--color-surface);
  box-shadow: 0 -4px 24px rgba(13, 21, 38, 0.07);
}

.site-footer a {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== עזרים ===== */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}


/* Skip navigation link */
.skip-link {
  position: absolute;
  top: -100px;
  right: 12px;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 8px 8px;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  z-index: 10000;
  transition: top 0.15s;
}
.skip-link:focus {
  top: 0;
}

/* Visible focus styles for keyboard navigation */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* Don't show focus ring on mouse click */
:focus:not(:focus-visible) {
  outline: none;
}

/* Hamburger button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-header-text);
  flex-direction: column;
  gap: 5px;
  margin-right: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    left: 0;
    background: var(--color-header-bg);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 0 20px;
    gap: 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    transform: translateY(-110%);
    transition: transform 0.25s ease;
    z-index: 999;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav a {
    display: block;
    padding: 14px 24px;
    text-align: right;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .main-nav a.nav-cta {
    margin: 12px 24px 0;
    text-align: center;
    border-bottom: none;
  }

  .brand span.brand-text {
    display: none;
  }
}