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

:root {
  --color-background: #fafafa;
  --color-text: #0b0b0b;
  --color-text-muted: rgba(11, 11, 11, 0.4);
  --padding-xxxl: 48px;
  --padding-xxl: 40px;
}

html, body {
  background: var(--color-background);
  color: var(--color-text);
  font-family: 'Manrope', sans-serif;
  min-height: 100vh;
  overscroll-behavior: none;
}

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

.page {
  width: 100%;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ══════════ DESKTOP HEADER ══════════ */
.header-desktop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 var(--padding-xxl);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--color-background);
}

.header-col { display: flex; align-items: center; flex: 1 0 0; }
.header-identity { gap: 8px; }
.header-nav { gap: 32px; justify-content: center; }
.header-chat { justify-content: flex-end; }

.avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.name { font-weight: 400; font-size: 16px; line-height: 21.6px; }
.role { font-weight: 300; font-size: 16px; line-height: 21.6px; color: var(--color-text-muted); }
.header-nav a { font-weight: 400; font-size: 16px; line-height: 21.6px; }

.chat-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  font-size: 16px;
  line-height: 21.6px;
}
.chat-link img { width: 20px; height: 20px; }

/* ══════════ MOBILE HEADER ══════════ */
.mobile-header-wrap { display: none; position: relative; width: 100%; }

.header-mobile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 24px;
}

.avatar-sm { width: 24px; height: 24px; border-radius: 50%; object-fit: cover; }
.name-sm { font-weight: 400; font-size: 12px; line-height: 21.6px; }
.header-mobile-identity { display: flex; align-items: center; gap: 8px; }

#mobile-menu-toggle {
  width: 24px; height: 24px;
  background: none; border: none; padding: 0; cursor: pointer;
}
#mobile-menu-toggle img { width: 100%; height: 100%; display: block; }

.mobile-menu-panel {
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--color-background);
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 0 24px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height .25s ease, opacity .2s ease, padding .25s ease;
  z-index: 20;
}
.mobile-menu-panel.open {
  max-height: 280px;
  opacity: 1;
  padding: 8px 24px 24px;
}
.mobile-menu-nav { display: flex; flex-direction: column; gap: 16px; }
.mobile-menu-nav a { font-weight: 400; font-size: 12px; line-height: 21.6px; }
.mobile-menu-chat {
  display: flex; align-items: center; gap: 4px;
  font-weight: 400; font-size: 12px; line-height: 21.6px;
}
.mobile-menu-chat img { width: 16px; height: 16px; }

/* ══════════ FOOTER ══════════ */
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 var(--padding-xxl);
  flex-shrink: 0;
}

.clock, .location {
  font-weight: 300;
  font-size: 16px;
  line-height: 21.6px;
  color: var(--color-text-muted);
}

/* ══════════ SHARED BREAKPOINT ══════════ */
@media (max-width: 767px) {
  .header-desktop { display: none; }
  .mobile-header-wrap { display: flex; }

  .mobile-header-wrap {
    flex-direction: column;
    position: sticky;
    top: 0;
    z-index: 30;
    background: var(--color-background);
  }

  footer {
    height: 70px;
    padding: 0 24px;
  }
  .clock, .location { font-size: 12px; }
}