/* ===== БАЗОВЫЕ СТИЛИ ===== */
@import url("https://fonts.googleapis.com/css2?family=Unbounded:wght@200..900&family=Montserrat:wght@400;500;600&display=swap");

:root {
  /* Цветовая схема */
  --color-primary: #162745;
  --color-primary-dark: #0e2d63;
  --color-primary-animation: #0e2d63;
  --color-secondary: #ccc;
  --color-background: #ffffff;
  --color-text: #333333;
  --color-white: #ffffff;

  /* Типография */
  --font-header: "Unbounded", sans-serif;
  --font-main: "Montserrat", sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Размеры шрифтов */
  --font-size-xs: 10px;
  --font-size-sm: 12px;
  --font-size-md: 14px;
  --font-size-lg: 15px;
  --font-size-xl: 20px;
  --font-size-xxl: 24px;
  --font-size-xxxl: 35px;
  --font-size-main: 24px;

  /* Отступы */
  --space-xs: 5px;
  --space-sm: 8px;
  --space-md: 10px;
  --space-lg: 14px;
  --space-xl: 16px;
  --space-xxl: 24px;
  --space-xxxl: 28px;
  --space-xxxxl: 48px;

  /* Границы */
  --border-radius-sm: 4px;
  --border-radius-md: 5px;
  --border-width-thick: 2px;
}

/* ===== СБРОС СТИЛЕЙ ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  font-weight: var(--font-weight-regular);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.5;
  min-height: 100vh;
  display: grid;
  grid-template-rows: 72px 1fr 73px;
  grid-template-columns: 1fr;
  grid-template-areas:
    "header"
    "main"
    "footer";
}

/* ===== HEADER GRID ===== */
nav {
  grid-area: header;
  width: 100%;
  height: 72px;
  background: var(--color-primary);
  display: grid;
  grid-template-columns: auto 1fr auto;

  align-items: center;
  padding: 0 var(--space-xxxxl);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-link {
  color: var(--color-white);
  font-size: var(--font-size-md);
  font-family: var(--font-header);
  font-weight: var(--font-weight-black);
  transition: opacity 0.3s ease;
  grid-column: 1;
}

.nav-link:hover {
  opacity: 0.8;
}
/* Навигация в хедере */
.header-nav {
  grid-column: 3;
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: var(--space-xxl);
  justify-content: end;
}

.nav-item {
  color: var(--color-white);
  font-size: var(--font-size-md);
  font-family: var(--font-header);
  font-weight: var(--font-weight-black);
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.nav-item:hover {
  opacity: 0.8;
}
/* ===== MAIN CONTENT GRID ===== */
main {
  grid-area: main;
  display: grid;
  grid-template-columns: 1fr minmax(auto, 1289px) 1fr;
  grid-template-rows: auto;
  padding: var(--space-md) 0;
  /* gap: var(--space-xs); */
}

main > * {
  grid-column: 2;
}

/* ===== СТИЛИ ГЛАВНОЙ СТРАНИЦЫ ===== */
.content-grid-main {
  display: grid;
  grid-template-columns: 458px 1fr;
  grid-template-rows: auto 1fr;
  row-gap: var(--space-xxxxl);
  column-gap: 150px;
  align-items: start;
  grid-template-areas:
    "image title"
    "image buttons";
}

.main-photo-home {
  grid-area: image;
  width: 458px;
  height: 458px;
}

.main-photo-home img {
  width: 100%;
  /* height: 100%; */
  object-fit: cover;
  border-radius: var(--border-radius-md);
}

.titles-main {
  grid-area: title;
  text-align: right;
  align-self: end;
}

.titles-main h1 {
  color: var(--color-primary);
  font-size: var(--font-size-xxxl);
  font-family: var(--font-header);
  font-weight: var(--font-weight-black);
  margin-bottom: var(--space-lg);
}

.titles-main p {
  color: var(--color-primary);
  font-size: var(--font-size-xxxl);
  font-family: var(--font-header);
  line-height: 1.2;
}

.titles-main p span {
  font-weight: var(--font-weight-medium);
}

.buttons-main {
  grid-area: buttons;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-self: start;
}

.button-main {
  width: 100%;
  height: 70px;
  padding: var(--space-xs) var(--space-xl) var(--space-xs) var(--space-xs);
  border: var(--border-width-thick) solid var(--color-primary);
  border-radius: var(--border-radius-md);
  background: var(--color-white);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  font-family: var(--font-header);
  font-weight: var(--font-weight-semibold);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  transition: all 0.3s ease;
  position: relative;
  text-decoration: none;
}
.button-imgs {
  width: 50px;
  height: 50px;
  margin-right: var(--space-md);
}
.button-main:hover {
  background-color: rgba(22, 39, 69, 0.05);
  transform: translateY(-2px);
}

.button-main::after {
  content: "";
  width: 16.5px;
  height: 21px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16.5 21'%3E%3Cpath d='M0 0L16.5 10.5L0 21V0Z' fill='%23162745'/%3E%3C/svg%3E");
}

/* ===== СТИЛИ СТРАНИЦ TASKS И VARIANTS ===== */
.titles.pagestitles {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.titles.pagestitles h1 {
  color: var(--color-primary);
  font-size: var(--font-size-xxl);
  font-family: var(--font-header);
  font-weight: var(--font-weight-black);
  margin-bottom: var(--space-lg);
}

.titles.pagestitles p {
  color: var(--color-text);
  font-size: var(--font-size-lg);
  font-family: var(--font-main);
  line-height: 1.5;
}

/* ===== КОНТЕЙНЕРЫ ===== */

img,
.imgContainer,
.task-image {
  max-width: 98% !important;
  width: 98%;
}

.theme-title {
  font-size: var(--font-size-xl);
}
.content {
  font-size: var(--font-size-lg);
}

.task-number {
  font-size: var(--font-size-lg);
  font-family: var(--font-main);
  display: none;
}

.theme-container,
.content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}
.theme-container {
  width: 100%;
  margin-bottom: 20px;
  border: 1px solid var(--color-secondary);
  padding: var(--space-md);
  border-radius: 8px;
  text-align: center;
}

.subtheme-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
  width: 100%;
}

.task-item {
  margin-bottom: 20px;
  padding: 25px 0px;
  border: 1px solid var(--color-secondary);
  border-radius: 8px;
  background-color: var(--color-background);
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
}

.answer-input {
  padding: 8px;
  margin: 5px 0;
  border: 1px solid var(--color-secondary);
  color: var(--color-text);
  border-radius: 5px;
  width: 200px;
}

.decision-button,
#submit-semester-button {
  padding: 8px 15px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  margin-left: 5px;
  display: none;
}

.decision-button:hover {
  background-color: var(--color-primary-animation);
}

.solution-image {
  max-width: 98%;
  width: 98%;
  height: auto;
  display: block;
  margin-top: var(--space-md);
}

.result-message {
  margin-top: var(--space-md);
  font-weight: bold;
}

.result-message.correct {
  color: green;
}

.result-message.incorrect {
  color: red;
}

/* задания */
.tasks-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.content-pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 90%;
}

.answer-button {
  padding: 8px 15px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  margin-left: 5px;
}

.answer-button:hover {
  background-color: var(--color-primary-animation);
}

/* семестровые */
.semester-buttons {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
  gap: var(--space-md);
}

.generate-button {
  padding: var(--space-md) 20px;
  height: 40px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

.generate-button:hover {
  background-color: var(--color-primary-animation);
}

.semester-variants-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.variant-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  border: 1px solid var(--color-secondary);
  padding: var(--space-md);
  border-radius: 8px;
  margin-bottom: 20px;
}

.submit-semester-button {
  padding: var(--space-md) 20px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  margin: 20px 0;
  display: none;
}

.submit-semester-button:hover {
  background-color: var(--color-primary-animation);
}

.total-score {
  display: none;
  font-weight: bold;
  margin: var(--space-md) 0;
}

.subtheme-number {
  font-weight: bold;
  margin-right: 5px;
}

/* ===== FOOTER GRID ===== */
footer {
  grid-area: footer;
  width: 100%;
  height: 73px;
  background: var(--color-primary);
  display: grid;
  grid-template-columns: 1fr minmax(auto, 1280px) 1fr;
  align-items: center;
  /* position: sticky; */
  bottom: 0;
  z-index: 1000;
}

.footer-content {
  grid-column: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xxl);
  align-items: center;
}

.footer-text {
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-family: var(--font-main);
}

.footer-text strong {
  font-weight: var(--font-weight-medium);
}

.footer-text .underline {
  font-weight: var(--font-weight-semibold);
  text-decoration: underline;
  cursor: pointer;
  transition: opacity 0.3s ease;
  color: var(--color-white);
}

.footer-text .underline:hover {
  opacity: 0.8;
}

/* ===== АДАПТИВНОСТЬ ===== */
@media (min-width: 1480px) {
  main {
    padding: var(--space-xxxxl) 0;
    /* grid-template-columns: 1fr minmax(auto, 1500px) 1fr; */
  }
  .main-photo-home {
    grid-area: image;
    width: 550px;
    height: auto;
  }
}
@media (max-width: 1280px) {
  main {
    grid-template-columns: var(--space-md) 1fr var(--space-md);
    padding: var(--space-xxxxl) 0;
  }

  .content-grid-main {
    grid-template-columns: 1fr;
    grid-template-areas:
      "title"
      "image"
      "buttons";
    gap: var(--space-xxl);
  }

  .main-photo-home {
    width: 100%;
    max-width: 458px;
    height: auto;
    aspect-ratio: 1/1;
    justify-self: center;
  }

  .titles-main {
    text-align: center;
  }
  .dropdown-content {
    left: 0;
    min-width: 200px;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-xxxl: 28px;
    --font-size-lg: 14px;
  }

  nav,
  footer {
    padding: 0 var(--space-md);
  }

  .content-grid-main {
    gap: var(--space-xl);
  }

  .header-nav {
    gap: var(--space-lg);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    text-align: center;
  }

  .titles-main p {
    font-size: var(--font-size-xxl);
  }

  .img-container {
    overflow: hidden;
  }

  .subtheme-list h3 {
    font-size: 1.5em;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-xxxl: 24px;
    --font-size-md: 12px;
  }
  .content-grid-main {
    grid-template-areas:
      "title"
      "buttons";
    gap: var(--space-xxxxl);
  }
  body {
    grid-template-rows: 60px 1fr auto;
  }
  main {
    padding: var(--space-xxxl) 0;
  }

  .main-photo-home {
    display: none;
  }

  nav {
    height: 60px;
    grid-template-columns: auto 1fr;
    justify-items: center;
    justify-items: end;
  }
  .nav-item:nth-child(2n) {
    display: none;
  }
  .header-nav {
    display: grid;
    /* grid-template-columns: 1fr 1fr; */
  }
  .nav-link.active {
    display: inline-flex;
    font-size: 0;
  }
  .nav-link.active::after {
    content: "";
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3E%3Cg clip-path='url(%23clip0_15_3)'%3E%3Crect width='24' height='24' /%3E%3Cpath d='M9 21H4C3.44772 21 3 20.5523 3 20V12.4142C3 12.149 3.10536 11.8946 3.29289 11.7071L11.2929 3.70711C11.6834 3.31658 12.3166 3.31658 12.7071 3.70711L20.7071 11.7071C20.8946 11.8946 21 12.149 21 12.4142V20C21 20.5523 20.5523 21 20 21H15M9 21H15M9 21V15C9 14.4477 9.44772 14 10 14H14C14.5523 14 15 14.4477 15 15V21' stroke='white' stroke-linejoin='round'/%3E%3C/g%3E%3Cdefs%3E%3CclipPath id='clip0_15_3'%3E%3Crect width='24' height='24' fill='white'/%3E%3C/clipPath%3E%3C/defs%3E%3C/svg%3E");
    transition: all 0.3s ease;
    width: 24px;
    height: 24px;
    opacity: 1;
  }
  .button-main {
    height: 45px;
    font-size: var(--font-size-md);
    /* padding: var(--space-xs) var(--space-md); */
  }

  .button-imgs {
    width: 30px;
    height: 30px;
    margin-right: var(--space-xs);
  }

  footer {
    height: auto;
    padding: var(--space-md) 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .footer-text {
    line-height: 1.4;
  }

  .semester-buttons {
    flex-direction: column;
    align-items: center;
  }

  .generate-button {
    margin: 5px 0;
    width: 100%;
    max-width: 200px;
  }
  .dropdown-content {
    left: -18px;
    min-width: 0px !important;
  }
}

/* Сброс увеличения на Айфонах */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="url"],
input[type="number"],
textarea,
select,
button {
  font-size: 16px !important;
  transform: translateZ(0);
}

/* ===== СТИЛИ СТРАНИЦЫ ОТЗЫВОВ ===== */

.feedbackForm {
  width: 100%;
  max-width: 100vw;
  display: flex;
  justify-content: center;
}
.feedbackPage {
  max-width: 100vw;
  display: flex;
  padding: 10px;
  flex-direction: column;
  align-content: center;
  flex-wrap: wrap;
  align-items: center;
}

/* дропдаун */

.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  background-color: white;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  border-radius: 4px;
  padding: var(--space-sm) 0;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.dropdown-content a:hover {
  background-color: var(--color-background-light);
  color: var(--color-primary);
}

.dropdown-toggle::after {
  content: " ▼";
  font-size: 0.8em;
  color: var(--color-secondary);
}