/* Typography */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:wght@300;400;700&display=swap');

/* CSS Variables for responsive sidebar widths */
:root {
    /* Narrower blog list, wider post content */
    --blog-sidebar-width: 320px;
    /* Responsive post width: min 360px, preferred 54vw, max 680px */
    --post-sidebar-width: clamp(360px, 54vw, 680px);
    /* Horizontal gap between blog and post sidebars when both open */
    --sidebar-gap: 0px; /* remove visual gap by default */
}

/* Base */
html { height: 100%; }

/* Box sizing for consistent sizing */
*, *::before, *::after { box-sizing: border-box; }

/* BODY */
body {
    margin: 0;
    padding: 0;
    font-family: "Noto Serif", Georgia, serif;

    background-image: url("../images/background.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    min-height: 100vh;
}

/* Prevent background-scroll when sidebars are open */
html.sidebar-open,
html.post-open {
    overflow: hidden;
}

/* Top Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 32px 50px;
}

.title {
    font-size: 2.7rem;
    font-weight: 700;
}

.menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.menu a {
    text-decoration: none;
    color: black;
    font-size: 1.15rem;
    font-weight: 400;
    transition: opacity 0.2s ease;
}

.menu a:hover {
    opacity: 0.6;
}

/* Social Icons */
.icons {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icons img {
    width: 22px;
    height: 22px;
    transition: opacity 0.2s ease;
}

.icons img:hover {
    opacity: 0.6;
}

/* Modal background layer */
#about-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(3px);

    display: flex;
    justify-content: center;
    align-items: center;

    opacity: 0;
    pointer-events: none;

    transition: opacity 0.35s ease;
}

/* When modal is visible */
#about-modal.modal-visible {
    opacity: 1;
    pointer-events: auto;
}

/* Modal window */
.modal-content {
    background: white;
    border-radius: 18px;
    padding: 35px;
    width: 480px;
    text-align: center;
    position: relative;

    transform: scale(0.85);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
}

/* Animate the modal when visible */
#about-modal.modal-visible .modal-content {
    transform: scale(1);
    opacity: 1;
}

/* Circular image */
.modal-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

/* Close button */
.modal-close {
    position: absolute;
    top: 14px;
    right: 18px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.6;
}

.modal-close:hover {
    opacity: 1;
}

/* Make text nicer */
.modal-content h2 {
    margin-top: 10px;
    font-size: 1.8rem;
    font-weight: 700;
}

.modal-content p {
    margin-top: 10px;
    line-height: 1.6;
    font-size: 1.05rem;
}

/* -------------------------------------- */
/*           RESPONSIVE DESIGN            */
/* -------------------------------------- */

@media (max-width: 768px) {

    .nav {
        padding: 20px 24px;
        flex-wrap: wrap;
        gap: 14px;
    }

    .title {
        font-size: 2rem;
    }

    .menu {
        gap: 18px;
    }

    .menu a {
        font-size: 1rem;
    }

    .icons img {
        width: 18px;
        height: 18px;
    }

    /* no hero-photo in project */
}

@media (max-width: 500px) {

    .nav {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        gap: 10px;
    }

    .title {
        font-size: 1.7rem;
    }

    .menu {
        gap: 14px;
    }

    .menu a {
        font-size: 0.95rem;
    }

    /* no hero-photo in project */
}

/* Mobile responsive sidebars */
@media (max-width: 1024px) {
    :root {
        --blog-sidebar-width: 100vw;
        --post-sidebar-width: 100vw;
    }

    /* On mobile, both sidebars take full width when open */
    .sidebar-open #blog-sidebar,
    .sidebar-open.post-open #post-sidebar {
        width: 100vw;
        transform: translateX(0);
    }

    #post-sidebar {
        padding: 20px;
    }

    #blog-sidebar {
        padding: 20px;
    }
}

/* Keep both panels interactive when post is open */
.post-open #blog-sidebar { pointer-events: auto; }

/* Small screens: show only the active panel to avoid overlap */
@media (max-width: 600px) {
    /* Single-panel behavior on small screens: show only one at a time */
    .sidebar-open:not(.post-open) #blog-sidebar { transform: translateX(0); }
    .sidebar-open.post-open #blog-sidebar { transform: translateX(100%); }
    .sidebar-open.post-open #post-sidebar {
        right: 0;
        transform: translateX(0);
        width: 100vw;
        padding: 20px; /* tighter padding on mobile */
    }
}

@media (max-width: 768px) {
    :root {
        --blog-sidebar-width: 100vw;
        --post-sidebar-width: 100vw;
    }
    /* Reduce nav padding for mobile */
    .nav { padding: 16px 18px; }
    /* Soften post button spacing */
    .post-button { padding: 10px 12px; }
}

/* Desktop fine-tuning: reduce crowding between 1024px and 1280px */
@media (min-width: 1024px) and (max-width: 1280px) {
    :root {
        --blog-sidebar-width: 300px;
        --sidebar-gap: 12px;
    }
}

/* Large desktops standard values */
@media (min-width: 1280px) and (max-width: 1440px) {
    :root {
        --blog-sidebar-width: 320px;
        --sidebar-gap: 16px;
    }
}

/* Sidebar (right aligned) */
/* Blog list sidebar (rightmost) */
#blog-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--blog-sidebar-width);
    height: 100vh;
    background: white;

    box-shadow: -4px 0 18px rgba(0,0,0,0.15);
    padding: 28px;
    z-index: 1000; /* sits below post sidebar when both open */

    transform: translateX(100%);
    transition: transform 0.35s ease, right 0.35s ease;
    will-change: transform, right;
    overflow-y: auto;
}

/* When visible */
.sidebar-open #blog-sidebar {
    transform: translateX(0);
}

/* When both are open, shift the blog list left to make room for the post */
.sidebar-open.post-open #blog-sidebar {
    right: calc(var(--post-sidebar-width) + var(--sidebar-gap));
}

/* Post sidebar (nested) */
/* Post content sidebar (left of blog when both open) */
#post-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    /* Fixed width; we will reserve space explicitly when both are open */
    width: var(--post-sidebar-width);
    height: 100vh;
    background: white;

    box-shadow: -4px 0 18px rgba(0,0,0,0.15);
    padding: 40px;
    z-index: 1300; /* ensure it is above blog sidebar */

    transform: translateX(100%);
    transition: transform 0.35s ease;
    overflow-y: auto;
}

/* When both are open, position post sidebar immediately left of blog sidebar */
.sidebar-open.post-open #post-sidebar {
    right: 0; /* post stays at the far right */
    transform: translateX(0);
}

/* Sidebar close button */
.sidebar-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.6;
    z-index: 10;
    transition: opacity 0.2s ease;
}

.sidebar-close:hover {
    opacity: 1;
}

/* Overlays */
#sidebar-overlay,
#post-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease, backdrop-filter 0.35s ease;
}

/* Dark overlay when blog is open */
#sidebar-overlay {
    background: rgba(0,0,0,0.35);
    backdrop-filter: blur(2px);
    z-index: 900; /* Below sidebars */
}

.sidebar-open #sidebar-overlay {
    opacity: 1;
    pointer-events: auto;
}

/* Heavier overlay when post is open */
#post-overlay {
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(6px);
    z-index: 999; /* Below sidebars */
    /* Exclude both sidebars when both are open */
    width: calc(100vw - var(--blog-sidebar-width) - var(--post-sidebar-width) - var(--sidebar-gap));
}

.post-open #post-overlay {
    opacity: 1;
    pointer-events: auto;
}

/* When blog sidebar is not open, post overlay covers full viewport */
/* This keeps behavior consistent when only the post panel is shown (mobile) */
:not(.sidebar-open).post-open #post-overlay {
    width: 100vw;
}

/* Mobile: blog takes full width so let overlay cover full as well */
@media (max-width: 1024px) {
    .post-open #post-overlay { width: 100vw; }
}

/* Styling for blog sidebar */
#blog-sidebar h2 {
    margin-top: 0;
    margin-bottom: 30px;
    font-size: 1.5rem;
}

#blog-list {
    padding: 0;
    margin: 0;
}

/* Year grouping */
.year-group {
    margin-bottom: 32px;
}

.year-header {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0 0 16px 0;
    color: #000;
}

/* Month grouping */
.month-group {
    margin-bottom: 20px;
}

.month-header {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 10px 0;
    color: #555;
}

/* Post buttons */
.post-button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin-bottom: 8px;
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

.post-button:hover {
    background: #e8e8e8;
    border-color: #ccc;
    transform: translateX(-2px);
}

.post-day {
    font-size: 0.85rem;
    font-weight: 600;
    color: #666;
    min-width: 24px;
}

.post-title {
    font-size: 0.95rem;
    color: #333;
    flex: 1;
}

/* Post content modal */
.post-content-modal {
    line-height: 1.8;
    color: #333;
    /* Prevent overflow on long words/URLs */
    overflow-wrap: anywhere;
    word-break: break-word;
}

.post-content-modal h1,
.post-content-modal h2,
.post-content-modal h3 {
    margin-top: 24px;
    margin-bottom: 12px;
}

.post-content-modal p {
    margin-bottom: 16px;
    overflow-wrap: anywhere;
}

.post-content-modal code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
    white-space: pre-wrap;
    word-break: break-word;
}

.post-content-modal pre {
    background: #f5f5f5;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    max-width: 100%;
}

.post-content-modal pre code {
    background: none;
    padding: 0;
    white-space: pre;
}

/* Images inside post content scale to container */
.post-content-modal img, .post-content-modal video, .post-content-modal iframe {
    max-width: 100%;
    height: auto;
}

/* Headings wrap and don’t overflow */
.post-content-modal h1,
.post-content-modal h2,
.post-content-modal h3,
.post-content-modal h4,
.post-content-modal h5,
.post-content-modal h6 {
    overflow-wrap: anywhere;
}

/* Reduce font size slightly on small screens inside post */
@media (max-width: 600px) {
    .post-content-modal { font-size: 0.95rem; }
    .post-content-modal h1 { font-size: 1.6rem; }
    .post-content-modal h2 { font-size: 1.4rem; }
}