/* GPRbase - Styles v2.0 */

:root {
  --color-black: #323232;
  --color-primary: #008cca;
  --color-primary-dark: #006da0;
  --color-primary-light: #e6f4fa;
  --color-green: #4bb44b;
  --color-green-dark: #3a9a3a;
  --color-green-light: #e8f5e8;
  --color-orange: #ff9632;
  --color-orange-dark: #e6852d;
  --color-red: #cc0000;
  --color-red-light: #ffe6e6;
  --color-blue-mds: #008cca;
  --color-gray-light: #c8c8c8;
  --color-gray-medium: #666;
  --color-gray-dark: #555;
  --color-white: #fff;
  --color-bg: #f8f9fa;
  --color-bg-alt: #f0f2f4;
  
  --font-primary: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 3px rgba(50,50,50,0.1);
  --shadow-md: 0 4px 12px rgba(50,50,50,0.1);
  --shadow-lg: 0 8px 24px rgba(50,50,50,0.12);
  --shadow-xl: 0 12px 48px rgba(50,50,50,0.15);
  
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --container-max: 1280px;
  --header-height: 60px;
  --touch-target: 44px;
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

@media (min-width: 768px) { :root { --header-height: 70px; } }

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

html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-black);
  background: var(--color-bg);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

:focus-visible { outline: 3px solid var(--color-blue-mds); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }

.skip-link {
  position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
  background: var(--color-black); color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md); border-radius: var(--radius-md); z-index: 9999;
}
.skip-link:focus { top: var(--spacing-md); }

a { color: var(--color-blue-mds); text-decoration: none; transition: color var(--transition-fast); -webkit-tap-highlight-color: transparent; }
a:hover { color: var(--color-primary); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; -webkit-tap-highlight-color: transparent; min-height: var(--touch-target); }
ul, ol { list-style: none; }
::selection { background: var(--color-primary); color: var(--color-white); }

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--spacing-md); }
@media (min-width: 768px) { .container { padding: 0 var(--spacing-lg); } }

/* Header */
.header { position: sticky; top: 0; z-index: 1000; background: var(--color-white); border-bottom: 1px solid var(--color-gray-light); height: var(--header-height); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: var(--spacing-sm); }
.header__logo { display: flex; align-items: center; gap: var(--spacing-sm); font-weight: 700; color: var(--color-black); flex-shrink: 0; }
.header__logo:hover { color: var(--color-primary); text-decoration: none; }
.header__logo-img { height: 36px; width: auto; }
.header__logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--color-primary), var(--color-blue-mds)); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--color-white); font-weight: 800; font-size: var(--font-size-xs); }
.header__logo-text { display: none; flex-direction: column; line-height: 1.1; }
@media (min-width: 480px) { .header__logo-text { display: flex; } }
.header__logo-text span:first-child { font-size: var(--font-size-lg); font-weight: 700; }
.header__logo-text span:last-child { font-size: var(--font-size-xs); color: var(--color-gray-medium); font-weight: 400; }

.header__nav { display: none; }
@media (min-width: 1024px) { .header__nav { display: flex; align-items: center; } }
.header__nav-list { display: flex; align-items: center; gap: var(--spacing-xs); }
.header__nav-link { padding: var(--spacing-sm) var(--spacing-md); color: var(--color-black); font-weight: 500; font-size: var(--font-size-sm); border-radius: var(--radius-md); transition: all var(--transition-fast); white-space: nowrap; }
.header__nav-link:hover, .header__nav-link.active { background: var(--color-primary-light); color: var(--color-primary-dark); text-decoration: none; }

.header__actions { display: flex; align-items: center; gap: var(--spacing-xs); }
@media (min-width: 768px) { .header__actions { gap: var(--spacing-md); } }

.lang-switch { display: flex; background: var(--color-bg); border-radius: var(--radius-md); padding: 2px; }
.lang-switch__btn { padding: var(--spacing-xs) var(--spacing-sm); font-size: var(--font-size-sm); font-weight: 600; color: var(--color-gray-medium); border-radius: var(--radius-sm); transition: all var(--transition-fast); min-height: 32px; min-width: 32px; }
.lang-switch__btn:hover { color: var(--color-black); }
.lang-switch__btn.active { background: var(--color-white); color: var(--color-primary); box-shadow: var(--shadow-sm); }

.cart-btn { display: flex; align-items: center; gap: var(--spacing-xs); padding: var(--spacing-xs) var(--spacing-sm); background: var(--color-primary); color: var(--color-white); border-radius: var(--radius-md); font-weight: 600; font-size: var(--font-size-sm); transition: background var(--transition-fast); min-height: var(--touch-target); }
@media (min-width: 768px) { .cart-btn { padding: var(--spacing-sm) var(--spacing-md); gap: var(--spacing-sm); } }
.cart-btn:hover { background: var(--color-primary-dark); }
.cart-btn span:not(.cart-btn__count) { display: none; }
@media (min-width: 768px) { .cart-btn span:not(.cart-btn__count) { display: inline; } }
.cart-btn__count { background: var(--color-white); color: var(--color-primary); padding: 2px 6px; border-radius: 20px; font-size: var(--font-size-xs); font-weight: 700; min-width: 20px; text-align: center; }

.mobile-menu-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; padding: var(--spacing-sm); min-width: var(--touch-target); }
@media (min-width: 1024px) { .mobile-menu-toggle { display: none; } }
.mobile-menu-toggle span { width: 24px; height: 2px; background: var(--color-black); border-radius: 2px; transition: all var(--transition-fast); }
.mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-nav { position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0; background: var(--color-white); z-index: 999; transform: translateX(-100%); transition: transform var(--transition-base); overflow-y: auto; -webkit-overflow-scrolling: touch; padding-bottom: var(--safe-area-bottom); }
.mobile-nav.active { transform: translateX(0); }
.mobile-nav__list { padding: var(--spacing-lg); }
.mobile-nav__link { display: block; padding: var(--spacing-md); color: var(--color-black); font-size: var(--font-size-lg); font-weight: 500; border-bottom: 1px solid var(--color-gray-light); min-height: var(--touch-target); }
.mobile-nav__link:hover, .mobile-nav__link.active { color: var(--color-primary); background: var(--color-primary-light); text-decoration: none; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--color-black) 0%, #1a1a1a 50%, var(--color-gray-dark) 100%); color: var(--color-white); padding: var(--spacing-2xl) 0; text-align: center; position: relative; overflow: hidden; }
@media (min-width: 768px) { .hero { padding: var(--spacing-3xl) 0; } }
.hero::before { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23fff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); opacity: 0.5; }
.hero__content { position: relative; z-index: 1; }
.hero__title, .hero__subtitle { font-size: var(--font-size-2xl); font-weight: 800; line-height: 1.1; margin-bottom: var(--spacing-sm); }
@media (min-width: 480px) { .hero__title, .hero__subtitle { font-size: var(--font-size-3xl); } }
@media (min-width: 768px) { .hero__title, .hero__subtitle { font-size: var(--font-size-4xl); } }
.hero__subtitle { color: var(--color-primary); }
.hero__tags { display: flex; justify-content: center; gap: var(--spacing-sm); margin-top: var(--spacing-lg); margin-bottom: var(--spacing-lg); flex-wrap: wrap; }
.hero__tag { display: inline-block; padding: var(--spacing-xs) var(--spacing-md); background: #f57c00; color: var(--color-white); font-size: var(--font-size-sm); font-weight: 600; border-radius: var(--radius-md); }
.hero__description { font-size: var(--font-size-base); color: var(--color-gray-light); max-width: 600px; margin: 0 auto var(--spacing-lg); }
@media (min-width: 768px) { .hero__description { font-size: var(--font-size-lg); margin-bottom: var(--spacing-xl); } }

.search-bar { display: flex; flex-direction: column; max-width: 500px; margin: 0 auto var(--spacing-lg); background: var(--color-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
@media (min-width: 480px) { .search-bar { flex-direction: row; } }
@media (max-width: 479px) { .search-bar { margin-left: var(--spacing-md); margin-right: var(--spacing-md); } }
.search-bar__input { flex: 1; padding: var(--spacing-md); border: none; font-size: 16px; color: var(--color-black); min-height: var(--touch-target); }
.search-bar__input::placeholder { color: var(--color-gray-medium); }
.search-bar__input:focus { outline: none; box-shadow: inset 0 0 0 2px var(--color-primary); }
.search-bar__btn { padding: var(--spacing-md) var(--spacing-lg); background: var(--color-primary); color: var(--color-white); font-weight: 600; min-height: var(--touch-target); }
@media (max-width: 479px) { .search-bar__btn { padding: var(--spacing-sm) var(--spacing-md); font-size: var(--font-size-sm); } }
.search-bar__btn:hover { background: var(--color-primary-dark); }

.category-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--spacing-xs); }
.category-pill { padding: var(--spacing-xs) var(--spacing-sm); background: rgba(255,255,255,0.1); color: var(--color-white); border-radius: var(--radius-xl); font-size: var(--font-size-xs); font-weight: 500; border: 1px solid rgba(255,255,255,0.2); min-height: 32px; display: inline-flex; align-items: center; }
@media (min-width: 768px) { .category-pill { padding: var(--spacing-sm) var(--spacing-md); font-size: var(--font-size-sm); } }
.category-pill:hover, .category-pill.active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); text-decoration: none; }

/* Stats */
.stats { padding: var(--spacing-xl) 0; background: var(--color-white); margin-top: -20px; position: relative; z-index: 10; border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
@media (min-width: 768px) { .stats { padding: var(--spacing-2xl) 0; margin-top: -40px; } }
.stats__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); max-width: 800px; margin: 0 auto; }
.stats__item { text-align: center; }
.stats__number { font-size: var(--font-size-2xl); font-weight: 800; color: var(--color-primary); line-height: 1; margin-bottom: var(--spacing-xs); }
@media (min-width: 768px) { .stats__number { font-size: var(--font-size-4xl); } }
.stats__label { font-size: var(--font-size-xs); color: var(--color-gray-medium); text-transform: uppercase; letter-spacing: 0.5px; }
@media (min-width: 768px) { .stats__label { font-size: var(--font-size-sm); } }

/* Sections */
.section { padding: var(--spacing-xl) 0; }
@media (min-width: 768px) { .section { padding: var(--spacing-2xl) 0; } }
.section--alt { background: var(--color-bg-alt); }
.section__header { display: flex; flex-direction: column; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
@media (min-width: 480px) { .section__header { flex-direction: row; align-items: center; justify-content: space-between; } }
.section__title { font-size: var(--font-size-xl); font-weight: 700; }
@media (min-width: 768px) { .section__title { font-size: var(--font-size-2xl); } }
.section__link { color: var(--color-primary); font-weight: 600; font-size: var(--font-size-sm); }
.section__link:hover { color: var(--color-primary-dark); }

/* Datasets Grid */
.datasets-grid { display: grid; grid-template-columns: 1fr; gap: var(--spacing-md); }
@media (min-width: 480px) { .datasets-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .datasets-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .datasets-grid { grid-template-columns: repeat(4, 1fr); } }

.dataset-card { background: var(--color-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow var(--transition-base), border-color var(--transition-fast); cursor: pointer; border: 2px solid transparent; }
@media (hover: hover) { .dataset-card:hover { box-shadow: var(--shadow-lg); } }
.dataset-card:focus-within { box-shadow: var(--shadow-lg); border-color: var(--color-blue-mds); }
.dataset-card.selected { border-color: var(--color-green); }

.dataset-card__image { position: relative; height: 140px; background: var(--color-bg-alt); overflow: hidden; }
@media (min-width: 768px) { .dataset-card__image { height: 160px; } }
.dataset-card__image img { width: 100%; height: 100%; object-fit: cover; }
.dataset-card__badge { position: absolute; top: var(--spacing-sm); left: var(--spacing-sm); padding: var(--spacing-xs) var(--spacing-sm); background: var(--color-white); color: var(--color-text); font-size: var(--font-size-xs); font-weight: 600; border-radius: var(--radius-sm); text-transform: uppercase; box-shadow: var(--shadow-sm); }
.dataset-card__checkbox { position: absolute; top: var(--spacing-sm); right: var(--spacing-sm); width: 32px; height: 32px; background: var(--color-white); border: 2px solid var(--color-gray-light); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; }
.dataset-card__checkbox.checked { background: var(--color-green); border-color: var(--color-green); color: var(--color-white); }

.dataset-card__body { padding: var(--spacing-md); }
.dataset-card__title { font-size: var(--font-size-sm); font-weight: 600; margin-bottom: var(--spacing-xs); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
@media (min-width: 768px) { .dataset-card__title { font-size: var(--font-size-base); } }
.dataset-card__meta { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); font-size: var(--font-size-xs); color: var(--color-gray-medium); }
.dataset-card__tags { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); margin-top: var(--spacing-sm); }
.dataset-card__tag { padding: 2px 8px; background: var(--color-bg); color: var(--color-gray-dark); font-size: var(--font-size-xs); border-radius: var(--radius-sm); }

/* CTA */
.cta { background: linear-gradient(135deg, var(--color-green), var(--color-green-dark)); padding: var(--spacing-xl) 0; text-align: center; }
@media (min-width: 768px) { .cta { padding: var(--spacing-2xl) 0; } }
.cta__content { max-width: 600px; margin: 0 auto; }
.cta__title { font-size: var(--font-size-xl); font-weight: 700; color: var(--color-white); margin-bottom: var(--spacing-sm); }
@media (min-width: 768px) { .cta__title { font-size: var(--font-size-2xl); } }
.cta__description { color: rgba(255,255,255,0.9); margin-bottom: var(--spacing-lg); }
.cta__btn { display: inline-block; padding: var(--spacing-md) var(--spacing-xl); background: var(--color-white); color: var(--color-green-dark); font-weight: 700; border-radius: var(--radius-md); min-height: var(--touch-target); }
.cta__btn:hover { background: var(--color-black); color: var(--color-white); text-decoration: none; }

/* Footer */
.footer { background: var(--color-black); color: var(--color-white); padding: var(--spacing-xl) 0 var(--spacing-lg); margin-top: auto; padding-bottom: calc(var(--spacing-lg) + var(--safe-area-bottom)); }
.footer__grid { display: grid; grid-template-columns: 1fr; gap: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
@media (min-width: 480px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer__brand { grid-column: 1 / -1; }
@media (min-width: 768px) { .footer__brand { grid-column: auto; } }
.footer__logo { font-size: var(--font-size-xl); font-weight: 700; margin-bottom: var(--spacing-sm); }
.footer__tagline { color: var(--color-gray-light); font-size: var(--font-size-sm); }
.footer__title { font-size: var(--font-size-sm); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: var(--spacing-md); color: var(--color-gray-light); }
.footer__links { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.footer__link { color: var(--color-white); font-size: var(--font-size-sm); padding: var(--spacing-xs) 0; min-height: var(--touch-target); display: inline-flex; align-items: center; }
@media (min-width: 768px) { .footer__link { min-height: auto; padding: 0; } }
.footer__link:hover { color: var(--color-primary); text-decoration: none; }
.footer__bottom { display: flex; flex-direction: column; align-items: center; gap: var(--spacing-sm); padding-top: var(--spacing-lg); border-top: 1px solid rgba(255,255,255,0.1); text-align: center; }
@media (min-width: 768px) { .footer__bottom { flex-direction: row; justify-content: space-between; } }
.footer__copyright, .footer__mds { font-size: var(--font-size-sm); color: var(--color-gray-medium); }
.footer__mds a { color: var(--color-primary); }

/* Cart Sidebar */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1100; opacity: 0; visibility: hidden; transition: all var(--transition-base); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.modal-overlay.active { opacity: 1; visibility: visible; }

.cart-sidebar { position: fixed; top: 0; right: 0; width: 100%; max-width: 400px; height: 100vh; height: 100dvh; background: var(--color-white); z-index: 1200; display: flex; flex-direction: column; transform: translateX(100%); transition: transform var(--transition-base); box-shadow: var(--shadow-xl); }
.cart-sidebar.active { transform: translateX(0); }
.cart-sidebar__header { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-md); border-bottom: 1px solid var(--color-gray-light); flex-shrink: 0; }
.cart-sidebar__title { font-size: var(--font-size-lg); font-weight: 700; }
.cart-sidebar__close { width: var(--touch-target); height: var(--touch-target); display: flex; align-items: center; justify-content: center; font-size: var(--font-size-2xl); color: var(--color-gray-medium); border-radius: var(--radius-md); }
.cart-sidebar__close:hover { background: var(--color-bg); color: var(--color-black); }
.cart-sidebar__body { flex: 1; overflow-y: auto; padding: var(--spacing-md); -webkit-overflow-scrolling: touch; }
.cart-sidebar__empty { text-align: center; padding: var(--spacing-2xl); color: var(--color-gray-medium); }
.cart-sidebar__empty-icon { font-size: 48px; margin-bottom: var(--spacing-md); }
.cart-sidebar__footer { padding: var(--spacing-md); border-top: 1px solid var(--color-gray-light); flex-shrink: 0; padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom)); }
.cart-sidebar__count { font-size: var(--font-size-sm); color: var(--color-gray-medium); margin-bottom: var(--spacing-md); }

.cart-item { display: flex; gap: var(--spacing-sm); padding: var(--spacing-sm); background: var(--color-bg); border-radius: var(--radius-md); margin-bottom: var(--spacing-sm); }
.cart-item__image { width: 50px; height: 50px; border-radius: var(--radius-sm); background: var(--color-gray-light); overflow: hidden; flex-shrink: 0; }
.cart-item__image img { width: 100%; height: 100%; object-fit: cover; }
.cart-item__info { flex: 1; min-width: 0; }
.cart-item__title { font-size: var(--font-size-sm); font-weight: 600; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cart-item__meta { font-size: var(--font-size-xs); color: var(--color-gray-medium); }
.cart-item__remove { color: var(--color-red); min-width: var(--touch-target); min-height: var(--touch-target); display: flex; align-items: center; justify-content: center; }
.cart-item__remove:hover { background: var(--color-red-light); border-radius: var(--radius-sm); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--spacing-sm); padding: var(--spacing-sm) var(--spacing-lg); font-size: var(--font-size-base); font-weight: 600; border-radius: var(--radius-md); transition: all var(--transition-fast); text-decoration: none; min-height: var(--touch-target); border: 2px solid transparent; }
.btn--primary { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.btn--primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white); text-decoration: none; }
.btn--primary:disabled { background: var(--color-gray-light); border-color: var(--color-gray-light); color: var(--color-gray-medium); cursor: not-allowed; }
.btn--green { background: var(--color-green); color: var(--color-white); border-color: var(--color-green); }
.btn--green:hover { background: var(--color-green-dark); border-color: var(--color-green-dark); color: var(--color-white); text-decoration: none; }
.btn--secondary { background: var(--color-bg); color: var(--color-black); border-color: var(--color-gray-light); }
.btn--secondary:hover { background: var(--color-gray-light); text-decoration: none; }
.btn--outline { border: 2px solid var(--color-primary); color: var(--color-primary); background: transparent; }
.btn--outline:hover { background: var(--color-primary); color: var(--color-white); text-decoration: none; }
.btn--lg { padding: var(--spacing-md) var(--spacing-xl); font-size: var(--font-size-lg); }
.btn--sm { padding: var(--spacing-xs) var(--spacing-md); font-size: var(--font-size-sm); min-height: 36px; }

/* Forms */
.form-group { margin-bottom: var(--spacing-md); }
.form-label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--color-black); margin-bottom: var(--spacing-xs); }
.form-label--required::after { content: ' *'; color: var(--color-red); }
.form-input { width: 100%; padding: var(--spacing-sm) var(--spacing-md); font-size: 16px; font-family: inherit; border: 2px solid var(--color-gray-light); border-radius: var(--radius-md); transition: border-color var(--transition-fast), box-shadow var(--transition-fast); min-height: var(--touch-target); background: var(--color-white); color: var(--color-black); }
.form-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }
.form-input::placeholder { color: var(--color-gray-medium); }
textarea.form-input { min-height: 120px; resize: vertical; }
select.form-input { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right var(--spacing-md) center; padding-right: calc(var(--spacing-md) * 2 + 12px); }
.form-checkbox { display: flex; align-items: flex-start; gap: var(--spacing-sm); cursor: pointer; min-height: var(--touch-target); padding: var(--spacing-xs) 0; }
.form-checkbox input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--color-primary); flex-shrink: 0; }
.form-checkbox span { font-size: var(--font-size-sm); line-height: 1.4; }
.form-error { color: var(--color-red); font-size: var(--font-size-sm); margin-top: var(--spacing-xs); }

/* Filters */
.filters-panel { background: var(--color-white); border-radius: var(--radius-lg); padding: var(--spacing-md); margin-bottom: var(--spacing-lg); box-shadow: var(--shadow-sm); }
@media (min-width: 768px) { .filters-panel { padding: var(--spacing-lg); position: sticky; top: calc(var(--header-height) + var(--spacing-lg)); } }
.filters-panel__title { font-size: var(--font-size-lg); font-weight: 700; margin-bottom: var(--spacing-lg); }
.filter-group { margin-bottom: var(--spacing-md); }
.filter-group:last-child { margin-bottom: 0; }
.filter-group__label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--color-gray-dark); margin-bottom: var(--spacing-sm); }
/* Active Filters (breadcrumb) */
.active-filters { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); align-items: center; }
.active-filters__label { font-size: var(--font-size-sm); color: var(--color-gray-medium); margin-right: var(--spacing-xs); }
.active-filter { display: inline-flex; align-items: center; gap: var(--spacing-xs); padding: var(--spacing-xs) var(--spacing-sm); background: var(--color-primary-light); color: var(--color-primary-dark); font-size: var(--font-size-sm); border-radius: var(--radius-xl); font-weight: 500; }
.active-filter__remove { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; background: var(--color-primary); color: var(--color-white); border-radius: 50%; font-size: 12px; line-height: 1; cursor: pointer; margin-left: 2px; }
.active-filter__remove:hover { background: var(--color-primary-dark); }
.active-filters__clear { font-size: var(--font-size-sm); color: var(--color-gray-medium); margin-left: var(--spacing-sm); cursor: pointer; text-decoration: underline; }
.active-filters__clear:hover { color: var(--color-primary); }

.datasets-layout { display: flex; flex-direction: column; gap: var(--spacing-lg); }
@media (min-width: 768px) { .datasets-layout { display: grid; grid-template-columns: 280px 1fr; gap: var(--spacing-xl); } }

/* Dataset Detail */
.dataset-detail { padding: var(--spacing-lg) 0; }
@media (min-width: 768px) { .dataset-detail { padding: var(--spacing-2xl) 0; } }
.dataset-detail__header { margin-bottom: var(--spacing-lg); }
.dataset-detail__back { display: inline-flex; align-items: center; gap: var(--spacing-xs); color: var(--color-gray-medium); font-size: var(--font-size-sm); margin-bottom: var(--spacing-md); min-height: var(--touch-target); }
.dataset-detail__back:hover { color: var(--color-primary); }
.dataset-detail__title { font-size: var(--font-size-xl); font-weight: 800; line-height: 1.2; }
@media (min-width: 768px) { .dataset-detail__title { font-size: var(--font-size-3xl); } }
.dataset-detail__grid { display: flex; flex-direction: column; gap: var(--spacing-lg); }
@media (min-width: 768px) { .dataset-detail__grid { display: grid; grid-template-columns: 2fr 1fr; gap: var(--spacing-xl); } }
.dataset-detail__image { border-radius: var(--radius-lg); overflow: hidden; background: var(--color-bg-alt); min-height: 200px; }
.dataset-detail__image img { width: 100%; height: auto; }
.dataset-detail__sidebar { display: flex; flex-direction: column; gap: var(--spacing-md); }
.dataset-detail__meta { background: var(--color-white); border-radius: var(--radius-lg); padding: var(--spacing-md); box-shadow: var(--shadow-sm); }
.dataset-detail__meta-title { font-size: var(--font-size-base); font-weight: 700; margin-bottom: var(--spacing-md); padding-bottom: var(--spacing-sm); border-bottom: 1px solid var(--color-gray-light); }
.meta-list { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.meta-item { display: flex; justify-content: space-between; font-size: var(--font-size-sm); gap: var(--spacing-sm); }
.meta-item__label { color: var(--color-gray-medium); }
.meta-item__value { font-weight: 600; text-align: right; word-break: break-word; }
.dataset-detail__actions { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.dataset-detail__share { background: var(--color-white); border-radius: var(--radius-lg); padding: var(--spacing-md); box-shadow: var(--shadow-sm); }
.share-buttons { display: flex; gap: var(--spacing-sm); margin-top: var(--spacing-md); flex-wrap: wrap; }
.share-btn { flex: 1; min-width: 80px; padding: var(--spacing-sm); background: var(--color-bg); border-radius: var(--radius-md); text-align: center; font-size: var(--font-size-sm); color: var(--color-gray-dark); min-height: var(--touch-target); display: inline-flex; align-items: center; justify-content: center; }
.share-btn:hover { background: var(--color-blue-mds); color: var(--color-white); text-decoration: none; }

/* Page Header */
.page-header { background: var(--color-black); color: var(--color-white); padding: var(--spacing-xl) 0; text-align: center; }
@media (min-width: 768px) { .page-header { padding: var(--spacing-2xl) 0; } }
.page-header__title { font-size: var(--font-size-2xl); font-weight: 800; margin-bottom: var(--spacing-sm); }
@media (min-width: 768px) { .page-header__title { font-size: var(--font-size-3xl); } }
.page-header__subtitle { color: var(--color-gray-light); }

/* Content blocks */
.content-grid { display: grid; grid-template-columns: 1fr; gap: var(--spacing-xl); }
@media (min-width: 768px) { .content-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .content-grid { grid-template-columns: repeat(3, 1fr); } }
.content-block { background: var(--color-white); border-radius: var(--radius-lg); padding: var(--spacing-lg); box-shadow: var(--shadow-sm); }
.content-block--green { border-left: 4px solid var(--color-primary); }
.content-block--orange { border-left: 4px solid var(--color-orange); }
.content-block--red { border-left: 4px solid var(--color-red); }
.content-block__title { font-size: var(--font-size-lg); font-weight: 700; margin-bottom: var(--spacing-md); }
.content-block__list { list-style: none; }
.content-block__list li { padding: var(--spacing-xs) 0; padding-left: var(--spacing-lg); position: relative; }
.content-block__list li::before { content: '✓'; position: absolute; left: 0; color: var(--color-primary); }
.content-block--red .content-block__list li::before { content: '✗'; color: var(--color-red); }

/* Prose */
.prose { max-width: 800px; margin: 0 auto; }
.prose h2 { font-size: var(--font-size-lg); font-weight: 700; margin: var(--spacing-xl) 0 var(--spacing-md); }
.prose h3 { font-size: var(--font-size-base); font-weight: 600; margin: var(--spacing-lg) 0 var(--spacing-sm); }
.prose p { margin-bottom: var(--spacing-md); color: var(--color-gray-dark); }
.prose ul, .prose ol { margin-bottom: var(--spacing-md); padding-left: var(--spacing-lg); }
.prose li { margin-bottom: var(--spacing-xs); color: var(--color-gray-dark); }
.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }

/* Utilities */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.no-scroll { overflow: hidden; }
.text-center { text-align: center; }

/* Loading */
.loading { display: flex; align-items: center; justify-content: center; padding: var(--spacing-2xl); min-height: 200px; }
.loading__spinner { width: 40px; height: 40px; border: 3px solid var(--color-gray-light); border-top-color: var(--color-primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Messages */
.no-results { text-align: center; padding: var(--spacing-2xl); color: var(--color-gray-medium); }
.error-message { background: var(--color-red-light); color: var(--color-red); padding: var(--spacing-md); border-radius: var(--radius-md); border-left: 4px solid var(--color-red); }
.success-message { background: var(--color-primary-light); color: var(--color-primary-dark); padding: var(--spacing-md); border-radius: var(--radius-md); border-left: 4px solid var(--color-primary); }

/* Reduce Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* Print */
@media print {
  .header, .footer, .cart-btn, .cart-sidebar, .modal-overlay, .mobile-menu-toggle, .mobile-nav, .search-bar, .filters-panel, .skip-link { display: none !important; }
  body { background: white; color: black; }
  .container { max-width: 100%; padding: 0; }
}