:root {
  --color-background-ui-element: #f5f8fa;
  --color-background-footer: #eaf0f5;
  --color-background-topbar: #e9eff4;

  --color-interactive-primary: #0077b6; 
  --color-button-callback-bg: #1D7C3F;

  --color-text-primary: #0A1F44;
  --color-background-body: #ffffff;
  --color-border-default: #d1d9e0;

  --color-brand-primary: #05929E;
  --color-brand-logo-text: #0A1F44;

  --color-button-secondary-bg: #e9e9e9;
  --color-button-secondary-text: #333;
  --color-button-secondary-hover-bg: #dcdcdc;

  --color-toast-text: white;
  --color-toast-success-bg: #388e3c;
  --color-toast-danger-bg: #d32f2f;
  --toast-info-bg: #1976d2;

  --color-shadow-light: rgba(0, 0, 0, 0.04);
  --color-shadow-default: rgba(0, 0, 0, 0.1);
  --color-shadow-medium: rgba(0, 0, 0, 0.15);
  --color-shadow-strong: rgba(0, 0, 0, 0.2);
  --color-shadow-heavy: rgba(0, 0, 0, 0.3);

  --color-interactive-primary-hover: #0056b3;
  --color-button-callback-hover-bg: #176030;

  --color-modal-overlay-bg: rgba(0,0,0,0.6);
  --color-close-button-default: #aaa;
  --color-modal-option-bg: #e9ecef;
  --color-modal-option-hover-bg: #dce1e6;

  --color-error-text: #dc3545;
  --color-placeholder-text: #999;

  --color-flash-success-bg: #e6f9ee;
  --color-flash-success-text: #00642e;
  --color-flash-success-border: #b3e6c9;

  --color-flash-danger-bg: #fce8e6;
  --color-flash-danger-text: #b32d00;
  --color-flash-danger-border: #f5c6cb;

  --color-flash-info-bg: #e7f3fe;
  --color-flash-info-text: #004085;
  --color-flash-info-border: #b8daff;

  --color-interactive-primary-rgb: 0, 119, 182;
  --color-card-border: rgba(var(--color-interactive-primary-rgb), 0.08);

  --top-bar-height: 28px;
  --nav-container-height: clamp(48px, 4vw + 32px, 72px);
  --logo-height: clamp(36px, 4vw + 20px, 60px);
  --nav-menu-font-size: clamp(1rem, 0.5vw + 0.8rem, 1.2rem);
  --container-horizontal-padding: clamp(1rem, 2vw, 2rem);

  --header-total-height: calc(var(--top-bar-height) + var(--nav-container-height));
  --header-total-height-dynamic: var(--header-total-height);

  --site-max-width: 1200px;

  /* кнопка чату */
  --chat-button-size-desktop: 60px;
  --chat-button-size-mobile: 65px;
  --chat-button-bottom-desktop: 60px;
  --chat-button-bottom-mobile: 80px;
  --chat-button-right-desktop: 30px;
  --chat-button-right-mobile: 20px;

  /* відступи */
  --container-horizontal-padding-desktop: 2rem;
  --container-horizontal-padding-tablet: 1.5rem;
  --container-horizontal-padding-mobile: 1rem;

  --section-vertical-padding: 30px;
  --section-vertical-padding-mobile: 18px;

  --grid-column-spacing: 15px;
  --grid-row-spacing: 25px;

  /* ✨ Кольори для іконок соціальних мереж */
  --color-icon-viber: #7360F2; 
  --color-icon-telegram: #0088CC;
  --color-icon-whatsapp: #25D366;
  --color-icon-facebook: #1877F2; 
  --color-icon-instagram: #E4405F;
  --color-icon-tiktok: #000000;
  --color-icon-youtube: #FF0000;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--color-background-body);
  color: var(--color-text-primary);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Rubik', sans-serif;
  font-weight: 700;
  color: var(--color-brand-primary);
}

/* хедер */
.site-header {
  background-color: var(--color-background-ui-element);
  color: var(--color-text-primary);
  box-shadow: 0 2px 5px var(--color-shadow-default);
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  max-width: var(--site-max-width);
  width: 100%;
  z-index: 999;
  box-sizing: border-box;
  height: auto;
  transition: height 0.5s ease-out;
  border-bottom-left-radius: 15px;
  border-bottom-right-radius: 15px;
}

.top-bar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 0.4rem var(--container-horizontal-padding);
  background-color: var(--color-background-topbar);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border-default);
  box-sizing: border-box;
  height: var(--top-bar-height);
  border-bottom-left-radius: 15px;
  border-bottom-right-radius: 15px;
}

.contact-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.contact-info a {
  color: var(--color-text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: color 0.3s ease;
}

.contact-info a:hover {
  color: var(--color-interactive-primary);
}

.contact-info .icon {
  font-size: 1.1rem;
  margin-right: 5px;
}

.phone-icon { color: var(--color-brand-primary); } 
.viber-icon { color: var(--color-icon-viber); }
.telegram-icon { color: var(--color-icon-telegram); }
.whatsapp-icon { color: var(--color-icon-whatsapp); }
.facebook-icon { color: var(--color-icon-facebook); }
.instagram-icon { color: var(--color-icon-instagram); }
.tiktok-icon { color: var(--color-icon-tiktok); }
.tiktok-icon-custom::before {
  content: "\e07b"; 
  font-family: "Font Awesome 6 Brands";
  font-weight: 900;
}
.youtube-icon { color: var(--color-icon-youtube); }

.animated-phone {
  animation: ring 1.5s infinite ease-in-out;
}
@keyframes ring {
  0% { transform: rotate(0); }
  10% { transform: rotate(10deg); }
  20% { transform: rotate(-10deg); }
  30% { transform: rotate(10deg); }
  40% { transform: rotate(-10deg); }
  50% { transform: rotate(0); }
  100% { transform: rotate(0); }
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem var(--container-horizontal-padding);
  box-sizing: border-box;
  height: var(--nav-container-height);
}

.logo-block {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-brand-logo-text);
}

.logo {
  height: var(--logo-height);
  margin-right: 0;
  object-fit: contain;
}

.school-name {
  display: none;
}

.nav-menu {
  display: flex;
  gap: 20px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: var(--nav-menu-font-size);
  padding: 10px 0;
  position: relative;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--color-brand-primary);
  transition: width 0.3s ease;
}

.nav-menu a:hover::after {
  width: 100%;
}

.nav-menu a:hover {
  color: var(--color-brand-primary);
}

.menu-toggle {
  display: none;
}

/* бургер */
.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-menu .bar {
  width: 100%;
  height: 3px;
  background-color: var(--color-text-primary);
  border-radius: 5px;
  transition: all 0.3s ease-in-out;
}

/* Анімація бургера */
.menu-toggle:checked + .hamburger-menu .bar:nth-child(1) { transform: translateY(11px) rotate(45deg); }
.menu-toggle:checked + .hamburger-menu .bar:nth-child(2) { opacity: 0; }
.menu-toggle:checked + .hamburger-menu .bar:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }

/* ЗАТЕМНЕННЯ КОНТЕНТУ */
.content-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: var(--color-modal-overlay-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease-out, visibility 0.3s ease-out;
  z-index: 899;
}

.content-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* контент */
.page-content-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-top: var(--header-total-height-dynamic);
}

.main-content {
  flex-grow: 1;
  padding: 1rem var(--container-horizontal-padding);
  padding-bottom: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box;
  width: 100%;
}

/* футер */
.site-footer {
  text-align: center;
  background: var(--color-background-footer);
  color: var(--color-text-primary);
  font-size: clamp(0.85rem, 0.5vw + 0.7rem, 1rem);
  line-height: 1.8;
  border-top: 1px solid var(--color-border-default);
  max-width: var(--site-max-width);
  margin: 0 auto;
  width: 100%;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
}

.footer-content {
  padding: 1rem var(--container-horizontal-padding);
  max-width: var(--site-max-width);
  margin: 0 auto;
  box-sizing: border-box;
}

.footer-content p {
  margin: 0.2rem 0;
}

.footer-slogan {
  font-weight: bold;
  color: var(--color-interactive-primary);
  font-size: 1.1em;
  margin-bottom: 10px;
}

.footer-social-links {
  margin-top: 15px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-social-links a {
  color: var(--color-text-primary);
  font-size: 1.6rem;
  transition: transform 0.3s ease;
}

.footer-social-links a:hover {
  transform: scale(1.1);
}

/* кнопка чату */
.chat-button {
  position: fixed;
  bottom: var(--chat-button-bottom-desktop);
  right: var(--chat-button-right-desktop);
  border: none;
  border-radius: 50%;
  width: var(--chat-button-size-desktop);
  height: var(--chat-button-size-desktop);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: 0 4px 10px var(--color-shadow-heavy);
  transition: transform 0.3s ease, background-color 0.3s ease, opacity 0.3s ease, bottom 0.3s ease;
  background: radial-gradient(circle at 50% 50%,
                              rgba(63, 194, 203, 1) 0%,
                              rgba(63, 194, 203, 0.7) 30%,
                              rgba(63, 194, 203, 0.3) 70%,
                              rgba(63, 194, 203, 0.12) 85%,
                              rgba(63, 194, 203, 0.07) 100%);
  opacity: 1;
}
.chat-button:hover {
  transform: scale(1.05);
  background: radial-gradient(circle at 50% 50%,
                              rgba(5, 146, 158, 1) 0%,
                              rgba(5, 146, 158, 0.85) 30%,
                              rgba(5, 146, 158, 0.5) 70%,
                              rgba(5, 146, 158, 0.25) 85%,
                              rgba(5, 146, 158, 0.15) 100%);
}
.chat-icon {
  width: 35px;
  height: 35px;
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
}

/* модальні вікна */
.chat-modal, .callback-modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: var(--color-modal-overlay-bg);
  justify-content: center;
  align-items: center;
}
.modal-content {
  background-color: #fefefe;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--color-shadow-heavy);
  position: relative;
  max-width: 400px;
  width: 90%;
  text-align: center;
  color: var(--color-text-primary);
}
.modal-content .close-button {
  color: var(--color-close-button-default);
  float: right;
  font-size: 28px;
  font-weight: bold;
  position: absolute;
  top: 10px;
  right: 15px;
  cursor: pointer;
  transition: color 0.3s ease;
}
.modal-content .close-button:hover,
.modal-content .close-button:focus {
  color: var(--color-interactive-primary);
  text-decoration: none;
  cursor: pointer;
}
.modal-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 25px;
}
.modal-option {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px 15px;
  background-color: var(--color-modal-option-bg);
  border-radius: 8px;
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: 1.1rem;
  transition: background-color 0.3s ease, transform 0.2s ease;
}
.modal-option:hover {
  background-color: var(--color-modal-option-hover-bg);
  transform: translateX(5px);
}
.modal-option i {
  font-size: 1.4rem;
}
.callback-button {
  background-color: var(--color-button-callback-bg);
  color: white;
  border: none;
  padding: 12px 25px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: bold;
  transition: background-color 0.3s ease;
  width: 100%;
  box-sizing: border-box;
}
.callback-button:hover {
  background-color: var(--color-button-callback-hover-bg);
}
.callback-modal .modal-content {
  max-width: 350px;
}
.callback-modal form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 20px;
}
.callback-modal .required-star {
  color: var(--color-error-text);
  margin-left: 3px;
  font-weight: bold;
}
.callback-modal label {
  font-weight: bold;
  color: var(--color-text-primary);
  text-align: left;
  margin-bottom: -10px;
}
.callback-modal input[type="text"],
.callback-modal input[type="tel"],
.callback-modal textarea { 
  padding: 10px 15px;
  border: 1px solid var(--color-border-default);
  border-radius: 5px;
  font-size: 1rem;
  box-sizing: border-box;
  width: 100%;
}
.callback-modal textarea {
  min-height: 80px;
  resize: vertical;
}
.callback-modal input::placeholder {
  color: var(--color-placeholder-text);
}
.callback-modal .secondary-button {
  background-color: var(--color-button-secondary-bg);
  color: var(--color-button-secondary-text);
  padding: 10px 15px;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
  width: 100%;
  box-sizing: border-box;
}
.callback-modal .secondary-button:hover {
  background-color: var(--color-button-secondary-hover-bg);
}
.callback-modal #additionalInfoFields {
  display: none;
  flex-direction: column;
  gap: 15px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border-default);
  margin-top: 5px;
}
.callback-modal button[type="submit"] {
  background-color: var(--color-interactive-primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s ease;
  width: 100%;
  box-sizing: border-box;
}
.callback-modal button[type="submit"]:hover {
  background-color: var(--color-interactive-primary-hover);
}

.form-legal-note {
  font-size: 0.8em;
  margin: 0px;
  text-align: center;
}
.form-legal-note a {
  color: var(--color-interactive-primary);
  text-decoration: none;
  font-weight: bold;
}
.form-legal-note a:hover {
  color: var(--color-interactive-primary-hover);
}

footer .form-legal-note {
  font-size: 1em;
}


.flashes.flash-messages-dynamic {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  box-sizing: border-box;
  padding-left: var(--container-horizontal-padding);
  padding-right: var(--container-horizontal-padding);
  overflow: hidden;
  height: 0;
  transition: height 0.5s ease-out, padding 0.5s ease-out;
  background-color: var(--color-background-ui-element);
}
.flashes.flash-messages-dynamic.active {
  height: auto;
  min-height: 45px;
  padding-top: 15px;
  padding-bottom: 15px;
}
.flashes.flash-messages-dynamic li {
  background-color: #fff;
  padding: 0.8rem 1rem;
  border-radius: 5px;
  text-align: center;
  font-size: 0.95rem;
  box-shadow: 0 2px 5px var(--color-shadow-default);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
  pointer-events: auto;
}
.flashes.flash-messages-dynamic li.active-message {
  opacity: 1;
  transform: translateY(0);
}
.flashes.flash-messages-dynamic li.success {
  background-color: var(--color-flash-success-bg);
  color: var(--color-flash-success-text);
  border: 1px solid var(--color-flash-success-border);
}
.flashes.flash-messages-dynamic li.danger {
  background-color: var(--color-flash-danger-bg);
  color: var(--color-flash-danger-text);
  border: 1px solid var(--color-flash-danger-border);
}
.flashes.flash-messages-dynamic li.info {
  background-color: var(--color-flash-info-bg);
  color: var(--color-flash-info-text);
  border: 1px solid var(--color-flash-info-border);
}
.flash-messages li a {
  color: inherit;
  text-decoration: underline;
  font-weight: bold;
  transition: color 0.3s ease;
}
.flash-messages li a:hover {
  color: var(--color-interactive-primary);
}

.toast-message {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-button-callback-bg);
  color: var(--color-toast-text);
  padding: 15px 25px;
  border-radius: 8px;
  box-shadow: 0 4px 12px var(--color-shadow-strong);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease-in-out, visibility 0.4s ease-in-out;
  min-width: 250px;
  text-align: center;
  font-weight: bold;
}
.toast-message.show {
  opacity: 1;
  visibility: visible;
}
.toast-message.success {
  background-color: var(--color-toast-success-bg);
}
.toast-message.danger {
  background-color: var(--color-toast-danger-bg);
}


@media (max-width: 768px) {
  .hamburger-menu {
    display: flex;
  }

  .nav-menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-background-ui-element);
    margin: 0;
    padding: 0;
    box-shadow: 0 5px 10px var(--color-shadow-strong);
    z-index: 900;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.26s ease-out;
    gap: 0;
  }

  .menu-toggle:checked ~ .nav-menu {
    max-height: 500px;
  }

  .nav-menu a {
    padding: 8px var(--container-horizontal-padding);
    margin: 0;
    display: flex;
    align-items: center;
    width: 100%;
    box-sizing: border-box;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-default);
    transition: background-color 0.3s ease, color 0.3s ease;
  }

  .nav-menu a:first-child {
    padding-top: 8px;
  }

  .nav-menu a:last-child {
    border-bottom: none;
  }

  .nav-menu a:hover {
    background-color: var(--color-background-footer);
    color: var(--color-brand-primary);
  }

  .nav-menu a::after {
    display: none;
  }

  .top-bar {
    justify-content: flex-end;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    gap: 10px;
  }
  .top-bar::-webkit-scrollbar {
    display: none;
  }
  .top-bar {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
  .contact-info {
    flex-wrap: nowrap;
    width: auto;
  }
  .chat-button {
    width: var(--chat-button-size-mobile);
    height: var(--chat-button-size-mobile);
    bottom: var(--chat-button-bottom-mobile);
    right: var(--chat-button-right-mobile);
  }
}