:root {
  --color-green-dark: #2d4a2d;
  --color-green-main: #5a8a3c;
  --color-page: #fbfbf8;
  --color-text: #101828;
  --color-muted: #667085;
  --color-border: #d0d5dd;
  --color-border-light: #e4e7ec;

  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Inter", Arial, sans-serif;

  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 999px;

  --shadow-soft: 0 12px 40px rgba(16, 24, 40, 0.06);
  --transition: 0.25s ease;

  --max-width: 1200px;
  --content-width: 720px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  min-width: 320px;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-page);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border-light);
  backdrop-filter: blur(10px);
}

.header.scrolled {
  box-shadow: 0 8px 30px rgba(16, 24, 40, 0.08);
}

.header__inner {
  height: 74px;
  display: flex;
  align-items: center;
  gap: 36px;
}

.logo {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-green-main);
  letter-spacing: -0.4px;
  white-space: nowrap;
}

.logo--light {
  color: #8fcc6a;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: #0f172a;
  transition: color var(--transition);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--color-green-main);
}

.header__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 20px;
}

.header__icon {
  display: flex;
  align-items: center;
  color: #0f172a;
  transition: color var(--transition);
}

.header__icon:hover {
  color: var(--color-green-main);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  min-height: 42px;
  padding: 10px 24px;
  background: #6a9858;
  color: #fff;
}

.btn--primary:hover,
.btn--submit:hover {
  background: var(--color-green-dark);
  box-shadow: 0 10px 24px rgba(77, 124, 58, 0.22);
}

.btn--outline,
.btn--cancel {
  background: #f5f2df;
  color: #0f172a;
}

.btn--outline:hover,
.btn--cancel:hover {
  background: #ece8ca;
}

.btn--submit {
  background: #6a9858;
  color: #fff;
}

.btn--submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn__plus {
  font-size: 22px;
  line-height: 1;
  font-weight: 400;
}

.burger {
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.burger span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 999px;
  transition: transform var(--transition), opacity var(--transition);
}

.burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger.open span:nth-child(2) {
  opacity: 0;
}

.burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.page {
  min-height: 70vh;
}

.add-product {
  padding: 34px 0 70px;
}

.add-product__container {
  max-width: calc(var(--content-width) + 48px);
}

.page-title {
  margin-bottom: 26px;
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  color: #030712;
}

.product-form {
  padding: 34px 32px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.form-group {
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

label {
  display: block;
  margin-bottom: 9px;
  font-size: 14px;
  font-weight: 600;
  color: #1f2a44;
}

input,
select,
textarea {
  width: 100%;
  border: 1.5px solid var(--color-border);
  border-radius: 18px;
  background: #fff;
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input,
select {
  height: 52px;
  padding: 0 16px;
}

textarea {
  min-height: 170px;
  resize: vertical;
  padding: 16px;
}

input::placeholder,
textarea::placeholder {
  color: #8a8f98;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-green-main);
  box-shadow: 0 0 0 4px rgba(90, 138, 60, 0.12);
}

.upload-area {
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 28px;
  border: 2px dashed #c9d1dd;
  border-radius: 22px;
  background: #fff;
  color: #98a2b3;
  cursor: pointer;
  text-align: center;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--color-green-main);
  background: #f6faf1;
  color: var(--color-green-main);
}

.upload-area svg {
  margin-bottom: 16px;
}

.upload-area span {
  display: block;
  margin-bottom: 4px;
  color: #1f2a44;
  font-size: 16px;
  font-weight: 500;
}

.upload-area small {
  color: var(--color-muted);
  font-size: 14px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}

.preview-card {
  position: relative;
  height: 130px;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  background: #f8fafc;
}

.preview-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-card button {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

.info-box {
  margin: 4px 0 40px;
  padding: 18px;
  border: 1px solid #c7dfbd;
  border-radius: 18px;
  background: #fbfdf8;
  color: #1f2a44;
  font-size: 15px;
  line-height: 1.55;
}

.form-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.footer {
  background: var(--color-green-dark);
  color: rgba(255, 255, 255, 0.75);
  padding-top: 56px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer__brand p {
  max-width: 310px;
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.65;
}

.footer__col h4 {
  margin-bottom: 16px;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.footer__col ul {
  display: grid;
  gap: 10px;
}

.footer__col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  transition: color var(--transition);
}

.footer__col a:hover {
  color: #8fcc6a;
}

.footer__bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
}

@media (max-width: 980px) {
  .header__inner {
    height: 68px;
  }

  .nav,
  .header__actions {
    display: none;
  }

  .burger {
    display: flex;
  }

  .nav.open {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: #fff;
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 18px 35px rgba(16, 24, 40, 0.12);
  }

  .nav.open .nav__link {
    font-size: 18px;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .add-product {
    padding: 26px 0 56px;
  }

  .product-form {
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .upload-area {
    min-height: 190px;
    padding: 22px;
  }

  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .preview-card {
    height: 110px;
  }

  .form-actions {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 420px) {
  .logo {
    font-size: 22px;
  }

  .page-title {
    font-size: 30px;
  }

  .product-form {
    padding: 22px 16px;
  }
}

.nav__link--mobile {
  display: none;
}

@media (max-width: 980px) {
  .nav__link--mobile {
    display: block;
  }
}