/* * Digitale.ink - Core Stylesheet 
 * Theme: Black & White IT Minimalism
 */

:root {
  --black: #000000;
  --white: #ffffff;
  --zinc-100: #f4f4f5;
  --zinc-400: #a1a1aa;
  --zinc-800: #27272a;
  --font-main: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Базовые настройки */
body {
  font-family: var(--font-main);
  background-color: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Акценты для кода */
.mono {
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

/* Кастомный скроллбар в стиле VS Code */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--white);
}
::-webkit-scrollbar-thumb {
  background: var(--black);
}

/* --- Стили анимации появления --- */
.reveal-element {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-element.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Кнопки (Брутализм) --- */
.btn-primary {
  background: var(--black);
  color: var(--white);
  padding: 1rem 2rem;
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  border: 1px solid var(--black);
}

.btn-primary:hover {
  background: var(--zinc-800);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0px var(--zinc-400);
}

/* --- Формы (Инпуты как в консоли) --- */
input, textarea {
  border-radius: 0 !important;
  border: none !important;
  border-bottom: 2px solid var(--zinc-100) !important;
  font-family: var(--font-mono);
  transition: border-color 0.3s ease;
}

input:focus {
  border-bottom-color: var(--black) !important;
  outline: none;
}

/* --- Секция курсов (Карточки) --- */
.course-card {
  border: 1px solid var(--zinc-100);
  padding: 2.5rem;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.course-card:hover {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.course-card img {
  filter: grayscale(100%);
  transition: filter 0.4s ease;
}

.course-card:hover img {
  filter: grayscale(0%);
}

/* --- Уведомление об успехе (Floating Notification) --- */
#success-msg {
  border: 1px solid var(--zinc-800);
  font-family: var(--font-mono);
  animation: slideDown 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
  from { transform: translate(-50%, -100%); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

/* --- Мобильное меню --- */
#mobile-menu {
  background: var(--white);
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#mobile-menu.active {
  transform: translateX(0);
}

/* --- Декоративные элементы (Grid background) --- */
.bg-grid {
  background-image: radial-gradient(var(--zinc-100) 1px, transparent 1px);
  background-size: 30px 30px;
}

/* --- Footer --- */
footer a {
  position: relative;
  text-decoration: none;
}

footer a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: var(--black);
  transition: width 0.3s ease;
}

footer a:hover::after {
  width: 100%;
}