/* ===== LAYOUT SYSTEM ===== */

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== CONTAINERS ===== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--spacing-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-8);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-2xl);
  }
}

/* ===== HEADER ===== */
.header {
  background: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) 0;
  min-height: var(--header-height);
}

/* ===== LOGO ===== */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
}

.logo__icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo__brain-graphic {
  position: relative;
  width: 100%;
  height: 100%;
}

.brain-shape {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient-primary);
}

.brain-shape--main {
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
}

.brain-shape--left {
  width: 30%;
  height: 30%;
  top: 20%;
  left: 0;
  background: var(--color-primary-400);
}

.brain-shape--right {
  width: 30%;
  height: 30%;
  top: 20%;
  right: 0;
  background: var(--color-primary-400);
}

.logo__text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== NAVIGATION ===== */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.nav__link {
  position: relative;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  padding: var(--spacing-2) var(--spacing-1);
  transition: color var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav__link:hover {
  color: var(--color-primary-600);
}

.nav__link--active {
  color: var(--color-primary-600);
  font-weight: var(--font-weight-semibold);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.nav__link--premium {
  background: var(--gradient-warm);
  color: var(--color-text-inverse);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-sm);
}

.nav__link--premium:hover {
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ===== MOBILE MENU ===== */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  gap: 3px;
}

.mobile-menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== RESPONSIVE NAVIGATION BREAKPOINTS ===== */

/* Extra large screens - normal navigation */
@media (min-width: 1200px) {
  .nav {
    gap: var(--spacing-6);
  }
  
  .nav__link {
    font-size: var(--font-size-base);
    padding: var(--spacing-2) var(--spacing-1);
  }
}

/* Large screens - slightly compressed */
@media (min-width: 1001px) and (max-width: 1199px) {
  .nav {
    gap: var(--spacing-5);
  }
  
  .nav__link {
    font-size: var(--font-size-sm);
    padding: var(--spacing-2) var(--spacing-1);
  }
}

/* Medium screens - compressed navigation */
@media (min-width: 901px) and (max-width: 1000px) {
  .nav {
    gap: var(--spacing-4);
  }
  
  .nav__link {
    font-size: var(--font-size-sm);
    padding: var(--spacing-1) var(--spacing-2);
  }
}

/* Small-medium screens - flex wrap with center alignment */
@media (min-width: 769px) and (max-width: 900px) {
  .header__content {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-4);
  }
  
  .nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-3);
    order: 2;
    width: 100%;
  }
  
  .nav__link {
    font-size: var(--font-size-sm);
    padding: var(--spacing-1) var(--spacing-2);
  }
  
  .logo {
    order: 1;
  }
  
  .header__auth {
    order: 3;
  }
}

/* Mobile screens - hamburger menu */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-light);
    flex-direction: column;
    padding: var(--spacing-4);
    gap: var(--spacing-4);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__link {
    width: 100%;
    text-align: center;
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
  }
  
  .nav__link:hover {
    background: var(--color-primary-50);
  }
  
  .header__auth {
    display: none;
  }
  
  .header__auth.mobile-visible {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-border-light);
  }
}

/* ===== MAIN CONTENT ===== */
.main {
  min-height: calc(100vh - var(--header-height));
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: var(--spacing-20) 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 20%, rgba(255, 152, 0, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 152, 0, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 152, 0, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__text {
  max-width: 600px;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-6);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-8);
  max-width: 500px;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 400px;
}

.hero__illustration {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-element {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient-primary);
  animation: float 6s ease-in-out infinite;
}

.floating-element--1 {
  width: 80px;
  height: 80px;
  top: 20%;
  left: 20%;
  animation-delay: -2s;
}

.floating-element--2 {
  width: 60px;
  height: 60px;
  top: 60%;
  right: 20%;
  animation-delay: -4s;
}

.floating-element--3 {
  width: 40px;
  height: 40px;
  bottom: 30%;
  left: 60%;
  animation-delay: -1s;
  background: var(--color-primary-400);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-16) 0;
  }
  
  .hero__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    text-align: center;
  }
  
  .hero__title {
    font-size: var(--font-size-4xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-lg);
    max-width: none;
  }
  
  .hero__actions {
    justify-content: center;
  }
  
  .hero__visual {
    min-height: 300px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-12) 0;
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__actions {
    flex-direction: column;
  }
  
  .hero__actions .btn {
    width: 100%;
  }
}

/* ===== SECTIONS ===== */
.section {
  padding: var(--spacing-20) 0;
}

.section--alt {
  background: var(--color-bg-tertiary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-tight);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 500px;
  margin: 0 auto;
}

.section-footer {
  text-align: center;
  margin-top: var(--spacing-12);
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-16) 0;
  }
  
  .section-header {
    margin-bottom: var(--spacing-12);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-base);
  }
}

/* ===== GRID SYSTEMS ===== */
.grid {
  display: grid;
  gap: var(--spacing-8);
}

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

.grid--3-cols {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4-cols {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid--4-cols {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid--3-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid--2-cols,
  .grid--3-cols,
  .grid--4-cols {
    grid-template-columns: 1fr;
  }
  
  .grid {
    gap: var(--spacing-6);
  }
}

/* ===== POSTS GRID ===== */
.posts-grid {
  display: grid;
  /* Zamiast repeat(3, 1fr) użyj konkretnych szerokości */
  grid-template-columns: repeat(3, minmax(320px, 380px));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
  /* Elementy będą układać się od lewej strony */
  justify-content: start;
}

@media (max-width: 1200px) {
  .posts-grid {
    grid-template-columns: repeat(2, minmax(320px, 450px));
  }
}

@media (max-width: 768px) {
  .posts-grid {
    grid-template-columns: 1fr; /* Na mobile jedna kolumna */
  }
}


@media (max-width: 768px) {
  .posts-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
}

/* ===== POST CARDS ===== */
.post-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-warm-lg);
  border-color: var(--color-primary-300);
}

.post-card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.post-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.post-card:hover .post-card__img {
  transform: scale(1.05);
}

.post-card__content {
  padding: var(--spacing-6);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.post-card__header {
  margin-bottom: var(--spacing-4);
}

.post-card__title {
  margin-bottom: var(--spacing-2);
}

.post-card__title a {
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
  transition: color var(--transition-fast);
}

.post-card__title a:hover {
  color: var(--color-primary-600);
}

.post-card__premium {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  background: var(--gradient-warm);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-left: var(--spacing-2);
}




.post-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
  margin-top: auto;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
}

.post-card__date {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.post-card__tags {
  display: flex;
  gap: var(--spacing-2);
  flex-wrap: wrap;
}

.post-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  background: var(--color-primary-100);
  color: var(--color-primary-800);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.post-tag:hover {
  background: var(--color-primary-200);
  color: var(--color-primary-900);
}

.post-card__premium-lock {
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-200);
  color: var(--color-primary-800);
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-align: center;
  margin-top: var(--spacing-4);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-tertiary);
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--spacing-20);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-8);
  padding: var(--spacing-16) 0;
}

.footer__section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.footer__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.footer__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.footer__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary-600);
}

.footer__link--button {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  text-align: left;
}

.footer__bottom {
  border-top: 1px solid var(--color-border-light);
  padding: var(--spacing-6) 0;
}

.footer__copyright {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

@media (max-width: 1024px) {
  .footer__content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
    padding: var(--spacing-12) 0;
  }
}

/* ===== UTILITIES ===== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.hidden {
  display: none;
}

.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;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ===== RESPONSIVE HELPERS ===== */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-3);
  }
  
  .section {
    padding: var(--spacing-12) 0;
  }
  
  .hero {
    padding: var(--spacing-10) 0;
  }
  
  .posts-grid {
    gap: var(--spacing-4);
  }
  
  .post-card__content {
    padding: var(--spacing-4);
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms ;
    animation-iteration-count: 1 ;
    transition-duration: 0.01ms ;
    scroll-behavior: auto ;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .header,
  .footer,
  .mobile-menu-toggle,
  .hero__visual,
  .floating-element {
    display: none;
  }
  
  .main {
    background: white;
  }
  
  .post-card {
    border: 1px solid #ccc;
    box-shadow: none;
    break-inside: avoid;
  }
}