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

.student {
  width: calc(100% - 40px); /* почти на всю ширину окна */
  margin: 20px;
  padding: 18px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}

.student-inner {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.photo {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.profile-img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  border: 1px solid var(--color-border);
  cursor: zoom-in;
}

.student-info {
  flex: 1 1 0;
  min-width: 0;
  text-align: left; 
}

.student-info h1 {
  margin: 0;
} 

.student-params .row {
  display: flex;
  gap: 12px;
  align-items: center; 
}

.student-params dt {
  font-weight: 600;
  flex: 0 0 150px; 
  color: var(--color-text);
}

.student-params dd {
  margin: 0;
  max-width: 350px; 
  min-width: 0; 
  flex: 1 1 auto;    
  color: var(--color-text);
  word-break: break-word;
}

.img-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.65);
  z-index: 1200;
  padding: 30px;
  overflow: auto;
}

#img-modal:target { display: flex; }
.img-modal-inner { max-width: 1100px; width: 100%; border-radius: 10px; overflow: hidden; background: transparent; text-align: center; }
.img-modal img { max-width: 100%; height: auto; border-radius: 6px; box-shadow: 0 10px 30px rgba(0,0,0,0.4); }
.img-modal .img-caption { margin-top: 10px; color: #fff; opacity: 0.9; }
.img-modal-close { position: absolute; right: 18px; top: 18px; color: #fff; font-size: 22px; text-decoration: none; background: rgba(0,0,0,0.25); padding: 6px 10px; border-radius: 6px; }

.action-strip {
  width: 100%;
  background: var(--color-header);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin: 24px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.action-strip-inner {
  display: flex;
  gap: 12px;
  max-width: none;
  padding: 14px 20px;
  justify-content: center;
}

.action-btn {
  display: inline-block;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 600;
  min-width: 150px;
  text-align: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  font-size: 1rem;
}
.action-btn:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.08); }

.action-btn.active {
  position: relative;
  color: var(--color-text);
  font-weight: 700;
}

.action-btn.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -8px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-header), var(--color-text));
}

.pages {
  max-width: 1200px;
  margin: 30px auto 80px;
  padding: 0 20px;
}

.video-section {
  margin: 40px 0;
  text-align: center; /* центрируем видео */
}

.video-section h2 {
  margin-bottom: 16px;
  font-size: 1.5rem;
  color: var(--color-text);
}

.profile-video {
  border-radius: 12px; /* скругляем края */
  box-shadow: 0 6px 18px rgba(0,0,0,0.75);
}

@media (max-width: 1024px) {
  .student {
    width: calc(100% - 28px);
    margin: 14px;
    padding: 14px;
  }

  .student-inner {
    flex-direction: column;
    gap: 16px;
    align-items: stretch;
  }

  .photo {
    width: 100%;
    max-width: 520px;
    flex: 0 0 120px;
    margin: 0 auto;
  }

  .student-info {
    display: flex;
    flex-direction: column;
    align-items: center; 
  }

  .student-title {
    text-align: center;
  }

  .action-strip {
    background: transparent;
    border: none;
    box-shadow: none;
    margin: 20px 0;
  }

  .action-strip-inner {
    max-width: 1024px;
    margin: 0 14px;
    padding: 12px;
    flex-direction: column;
    gap: 12px;
    align-items: stretch;

    background: var(--color-bg);
    border-radius: 10px;
    border: 1px solid var(--color-border);

    box-shadow: 0 4px 14px rgba(0,0,0,0.05);
  }

  .action-btn {
    width: 100%;
    min-width: 0;
    font-size: 0.95rem;
    padding: 10px 12px;
  }

  .btn {
    font-size: 0.95rem;
    padding: 9px 12px;
  }
}

@media (max-width: 520px) {
  .photo { width: 90%; }
  .student-title { font-size: 1.6em; }
  .student-params dt { min-width: 120px; }
  .student-desc { font-size: 0.95em; }
  .profile-img { border-radius: 6px; }
  .img-modal .img-caption { font-size: 0.95em; }
  .action-btn, .btn { font-size: 0.9rem; padding: 9px 10px; }
}