@import url('fonts.css');

:root {

    --base-size: 1rem;
    --ratio: 1.15;

    --s-h1: calc(var(--s-h2) * var(--ratio));
    --s-h2: calc(var(--s-h3) * var(--ratio));
    --s-h3: calc(var(--s-h4) * var(--ratio));
    --s-h4: calc(var(--base-size) * var(--ratio));
    --s-small: calc(var(--base-size) / var(--ratio));

    --lh-heading: 1.15;
    --lh-body: 1.6;

    --clr-body-bg: #F7F7F7;
    --clr-surface: #EEEEEE;
    --clr-accent:  #929AAB;
    --clr-text:    #393E46;
    --clr-bar: #393E4633;
    --clr-highlight: #880808;


    --font-logo: 'DM Serif Display', serif;
    --font-body: 'Roboto', Helvetica, Arial, sans-serif;

    --header-height: 4rem;
    --z-overlay: 1000;
    --z-header: 1001;
    --z-toggle: 1002;

    --screen-edge: 2rem;
    --max-width: 1400px;
}

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

body {
    background-color: var(--clr-body-bg);
    color: var(--clr-text);
    margin: 0;
    font-size: var(--base-size);
    line-height: var(--lh-body);
    font-family: var(--font-body);
    padding-inline: 1.25rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: var(--z-header);
    padding-block: 2rem;
}

h1, h2, h3, h4 {
  line-height: var(--lh-heading);
  margin-top: 2em;
  margin-bottom: 1em;
  font-weight: 700;
}

h1 {
  font-size: var(--s-h1);
  letter-spacing: -0.04em;
  margin-top: 0;
}

h2 {
  font-size: var(--s-h2);
  letter-spacing: -0.03em;
}

h3 {
  font-size: var(--s-h3);
  letter-spacing: -0.02em;
}

h4 {
  font-size: var(--s-h4);
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 1.5rem;
}

small {
  font-size: var(--s-small);
  letter-spacing: 0.01em;
}

aside h1, aside h2, aside h3 {
  letter-spacing: 0;
  margin-top: 1.5rem;
}

aside p {
  line-height: 1.4;
  max-width: 200px;
  margin-top: 0px;
}

aside .logo {
    font-size: 2.1rem;
}

.main-layout {
    display: flex;
    flex-direction: column;
    gap: 30px;
}


.sidebar {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
}


.logo {
    font-weight: bold;
    color: var(--clr-highlight);
    text-decoration: none;
    font-family: var(--font-logo);
}

.logo-img {
    height: 50px;
    width: auto;
}

.button-menu {
    display: flex;
    gap: 40px;
}

.button-menu  .focused{
    font-weight: 600;
    transform: scale(1.05);
}

.button-item {
    transition: background-color 0.2s, color 0.2s, transform 0.1s;
    color: var(--clr-text);
}

.primary-navigation {
    position: fixed;
    inset: 0; 
    z-index: var(--z-overlay);
    padding-top: 5rem;

    background: var(--clr-surface); 

    transform: translateX(100%);
    transition: transform 300ms ease-out;
}

.primary-navigation[data-visible="true"] {
    transform: translateX(0);
}

.primary-navigation ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.primary-navigation a {
    display: block;
    padding: 1rem;
    color: var(--clr-text);
    text-decoration: none;

    border-bottom: 1px solid rgba(57, 62, 70, 0.1); 
    transition: color 0.2s;
}

.primary-navigation a:hover,
.primary-navigation a:focus {
    color: var(--clr-accent);
    background: rgba(255,255,255, 0.5);
}

.nav-toggle {
    display: block;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: var(--z-toggle);
    padding: 0.5rem;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 2rem;
    height: 3px;
    background: var(--clr-text);
    border-radius: 1px;
    transition: transform 0.3s ease-in-out, background 0.3s;
}

.nav-toggle:hover .hamburger,
.nav-toggle:hover .hamburger::before,
.nav-toggle:hover .hamburger::after {
    background: var(--clr-accent);
}

.hamburger { position: relative; }
.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger::before { transform: translateY(-0.6rem); }
.hamburger::after  { transform: translateY(0.6rem); }

.nav-toggle[aria-expanded="true"] .hamburger { background: transparent; }
.nav-toggle[aria-expanded="true"] .hamburger::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .hamburger::after { transform: rotate(-45deg); }

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.blog-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

.blog-container.loading {
    opacity: 0;
}

.content-filters button{
    cursor: pointer;
    background-color: var(--clr-body-bg);
    border: 0px solid black;
}

.content-filters li {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
.content-filters ul {
    display: flex;
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.button {
    font-family: inherit;
    padding: 0.7rem 1.5rem;
    text-decoration: none;

    background-color: var(--clr-text);
    color: var(--clr-body-bg, #ffffff);

    border-radius: 8px;
    border: 0px solid rgba(0,0,0,0.1);
    
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease-in-out;
    user-select: none;
}

.button:hover {
    filter: brightness(0.9);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    opacity: 0.9;
}

.button:active {
    transform: translateY(0);
    filter: brightness(0.9);
}

.button:focus-visible {
    outline: 2px solid var(--clr-primary, #007bff);
    outline-offset: 2px;
}

.button.dono {
    background-color: var(--clr-highlight);
    color: var(--clr-body-bg);
}

.article-button {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    margin-top: 16px;
}

.card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--clr-bar);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    gap: 10px;
}

.card h2 {
    margin: 0.5rem 0;
    font-size: 1.5rem;
    line-height: 1.2;
}

.card p {
    margin: 0;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3; 
    overflow: hidden;
}

.widget {
    padding: 20px;
    margin-top: 30px;
    margin-bottom: 30px;
    overflow: hidden;
    border: 1px solid var(--clr-bar);
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.sub-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sub-form input {
    border: none;
    border-bottom: 2px solid var(--clr-bar);
    padding: 10px 0;
    background: transparent;
    outline: none;
    transition: border-color 0.3s ease;
}

.sub-form input:focus {
    border-bottom-color: var(--clr-text); 
}

.sub {
    justify-content: center;
}

.author {
    display: flex;
    align-items: center;
    gap: 20px;
}

.author img {
      width: 100px;
      height: 100px;
      border-radius: 10%;
      object-fit: cover;
}

.article-metadata {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.article-metadata .m {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    margin: 0;
}

.bar {
    height: 1px;
    width: 40px;
    background-color: var(--clr-bar); 
    margin: 1rem 0;
}

.pulse-button {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.pulse-button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px; 
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  opacity: 0;
  z-index: -1;
  transform: translate(-50%, -50%) scale(0);
  animation: circular-ripple 3s infinite;
}

@keyframes circular-ripple {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
  }
}

nav[aria-label="Page navigation"] {
    grid-column: 1 / -1; 
    width: 100%;
    margin-top: var(--pagination-spacing);
    display: flex;
    justify-content: center;
}

.pagination {
    display: flex;
    flex-wrap: wrap; 
    justify-content: center;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 4px;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 8px;
    text-decoration: none;
    color: var(--clr-text);
    font-family: inherit;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.page-item.active .page-link {
    font-weight: 700;
}

.page-item.disabled .page-link {
    color: var(--pagination-disabled);
    cursor: default;
    pointer-events: none;
}

.arrow {
    font-size: var(--s-h1);
}

.heading-link {
    color: var(--clr-text);
    text-decoration: none;
}

[id^="kofi-widget"] { 
    color-scheme: light !important; 
}


/* Desktop */
@media (min-width: 800px) {

    :root {
    --scale: 1.25;
    }
    
    p {
        max-width: 70ch;
    }

    .container {
        max-width: var(--max-width);
        margin-inline: auto;
        padding-inline: var(--screen-edge);
    }

    .main-layout {
        display: flex;
        flex-direction: row;
        max-width: 1400px;
        margin-inline: auto;
        padding-inline: 2rem;
    } 

    .blog-container {
        grid-template-columns: repeat(2, 1fr);
        justify-content: space-evenly; 
    }

    .sidebar {
        position: sticky; 
        width: 250px;
        height: 100vh;
        flex-shrink: 0;
        overflow-y: auto;
        top: 0px;
    }

    .sidebar::after {
        content: "";
        position: absolute;
        right: 20px; 
        top: 50%;
        transform: translateY(-80%);

        width: 1px;
        height: 70%;
        background-color: var(--clr-bar);
        z-index: 10; 
    }

    .main-content {
        flex:1;
        min-width:0;
        overflow-y:auto;
    }
  
    .nav-toggle { 
        display: none; 
    }

    .primary-navigation {
    position: static;
    transform: none;
    transition: none;
    padding: 0;
    background: transparent;
    z-index: auto;
    inset: auto;
    margin-left: auto;
    }

    .primary-navigation ul {
    display: flex;
    gap: 2rem; 
    }

    .primary-navigation a {
    padding: 0;
    border: none;
    background: transparent;
    font-weight: 500;
    }

    .primary-navigation a:hover {
    color: var(--clr-accent);
    background: transparent;
    }
    
    .widget {
        display: flex;
        align-items: center;
        gap: 20px;
    }

    .post-content  {
        max-width: 70ch;
    }

    .sub-content {
        flex: 1;
    }

    .sub-form {
        flex: 1;
        display: flex;
        gap: 10px;
    }

    .sub-form input {
        padding: 10px;
    }

    .content-filters ul {
        display: block;
    }

    .pagination {
        gap: 8px;
    }

    .page-item.active .page-link {
        background-color: transparent;
        border-bottom: 2px solid var(--clr-bar);
        border-radius: 0;
    }

}