/*
Theme Name: Zibaldone
Author: Shinobu
*/


@charset "UTF-8";

/* =================================================
   Base / Design Tokens
================================================= */
:root {
    /* ===== Color System ===== */
    --color-ink: #423B3B;
    --color-paper: #E7E2DB;
    --color-blur: #BAA9A7;
    --color-shadow: #121111;

    /* ===== Spacing Scale ===== */
    --space-xs: 4px;
    --space-s: 8px;
    --space-m: 16px;
    --space-l: 24px;
    --space-xl: 32px;
    --space-2xl: 40px;
    --space-3xl: 48px;
    --space-4xl: 60px;
    --space-5xl: 120px;

    /* ===== Border ===== */
    --border-thin: 1px;
    --border-thick: 3px;

    /* ===== Grid System ===== */
    --col-1: 8.3333%;
    --col-2: 16.6667%;
    --col-3: 25%;
    --col-4: 33.3333%;
    --col-5: 41.6667%;
    --col-6: 50%;
    --col-7: 58.3333%;
    --col-8: 66.6667%;
    --col-9: 75%;
    --col-10: 83.3333%;
    --col-11: 91.6667%;
    --col-12: 100%;

    /* ===== Typography ===== */
    --font-base: 'BIZ UD Gothic', 'Roboto', sans-serif;
}


/* =================================================
   Base Reset
================================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
}

ul,
ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
    display: inline-block;
}

a:hover {
    opacity: 0.7;
}

h1,
h2,
h3 {
    margin: 0;
    padding: 0;
}

/* =================================================
   Base
================================================= */
html {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-base);
    font-weight: 400;
    font-size: 1.12rem;
    line-height: 1.8;
    color: var(--color-ink);
    background-color: var(--color-paper);
    margin: 0;
    padding-top: 120px;
}

.wrapper {
    max-width: 736px;
    padding: 0;
    margin: 0 auto;
}

.inner {
    max-width: 95%;
    margin: 0 auto;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-l) var(--space-2xl);
    border-top: var(--border-thick) solid var(--color-ink);
    border-bottom: var(--border-thick) solid var(--color-ink);
    text-align: center;
}

section {
    margin-top: var(--space-5xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1.2;
    border-bottom: var(--border-thick) solid var(--color-ink);
    display: inline-block;
    margin-bottom: var(--space-4xl);
}

h2 .sub-title {
    font-size: 1.5rem;
    margin-left: var(--space-xl);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-l) var(--space-2xl);
    border-top: var(--border-thick) solid var(--color-ink);
    border-bottom: var(--border-thick) solid var(--color-ink);
    text-align: center;
}


/* =================================================
   Layout - Header
================================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    background-color: var(--color-paper);
    padding-top: var(--space-l);
}

.header .material-symbols-outlined {
    font-size: 2.5rem;
}

.header .inner a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.header .inner a:hover {
    transform: scale(1.2) translateY(-2px);
}

.header h1 {
    font-weight: 900;
    letter-spacing: 0.03em;
}

.header h1 a:hover {
    animation: text-blur 0.5s;
    opacity: 1;
}

@keyframes text-blur {
    0% {
        filter: blur(0);
    }

    50% {
        filter: blur(4px);
    }

    100% {
        filter: blur(0);
    }
}

.header .menu {
    font-size: 1.3rem;
    font-weight: 900;
    line-height: 1.2;
}

.header .menu a {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.header .sub-menu {
    font-size: 0.8rem;
    font-weight: 700;
}

/* =================================================
   Layout - Main Visual
================================================= */
.mv {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-5xl) 0;
}

.mv img.mv-txt {
    width: var(--col-5);
}

.mv img.mv-pen {
    width: var(--col-6);
}

/* =================================================
   Layout - Pickup Section (Top Page)
================================================= */
#pickup .post-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-l);
}

/* =================================================
   Layout - Shelf Section (Archive)
================================================= */
#shelf .post-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    column-gap: var(--space-l);
    row-gap: var(--space-4xl);
}

#shelf .more-link a {
    display: inline-block;
    padding: var(--space-s) var(--space-5xl);
    border: var(--border-thick) solid var(--color-ink);
    border-radius: 100vh;
    background-color: var(--color-ink);
    color: var(--color-paper);
    font-weight: 700;
    letter-spacing: 0.2em;
    margin-top: var(--space-5xl);
    transition: background-color 0.3s ease, color 0.3s ease;
}

#shelf .more-link a:hover {
    background-color: var(--color-paper);
    color: var(--color-ink);
    opacity: 1;
}

/* =================================================
   Layout - Pagination
================================================= */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-m);
    margin-top: var(--space-5xl);
}

.pagination .page-numbers {
    padding: var(--space-s) var(--space-m);
}

.pagination .current {
    background-color: var(--color-ink);
    color: var(--color-paper);
    border-radius: 100vh;
}

/* =================================================
   Layout - Footer
================================================= */
footer {
    margin: var(--space-5xl) 0 var(--space-l);
}

footer .my_hp a {
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

footer .my_hp a:hover {
    transform: translate(4px, -4px);
}

footer .my_hp__link {
    display: flex;
    align-items: center;
    gap: var(--space-s);
}

/* =================================================
   Single Post - Structure
================================================= */
.single {
    margin-top: var(--space-5xl);
}

.single-title {
    line-height: 1.2;
}

.single-meta {
    font-size: 0.8rem;
}

article.single > .single-content {
    margin-top: var(--space-4xl);
}


.single-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-s);
}


/* Table of Contents */
#rtoc-mokuji-wrapper {
    border: var(--border-thick) solid var(--color-ink);
    padding: var(--space-l);
    margin: var(--space-4xl) 0;
    font-size: 0.9rem;
}

#rtoc-mokuji-wrapper .rtoc-title {
    font-weight: 900;
    margin-bottom: var(--space-m);
}

#rtoc-mokuji-wrapper ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-s);
}

/* Single Footer */
.single-footer {
    margin-top: var(--space-4xl);
    padding-top: var(--space-4xl);
}

/* Tag & Category Section */
.single-tagcat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: var(--border-thin) solid var(--color-ink);
    border-bottom: var(--border-thin) solid var(--color-ink);
    padding: var(--space-l) 0;
    font-size: 0.9rem;
}

.single-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-s);
}

.single-tags a {
    padding: var(--space-xs) var(--space-m);
    font-weight: 600;
    background-color: var(--color-blur);
    color: var(--color-ink);
}

.single-category {
    text-align: center;
    padding: var(--space-xs) var(--space-s);
    background-color: var(--color-ink);
    color: var(--color-paper);
}

.single-category a {
    font-weight: 700;
}

.category {
    padding: var(--space-xs) var(--space-s);
    background-color: var(--color-ink);
    color: var(--color-paper);
    margin-right: var(--space-m);
}

/* Author Box */
.author-box {
    background-color: rgba(0, 0, 0, 0.03);
    padding: var(--space-2xl);
    margin-bottom: var(--space-4xl);
}

.author-box__inner {
    gap: var(--space-l);
}

.author-box__prof {
    display: flex;
    gap: var(--space-l);
    align-items: center;
}

.author-box img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
}

.author-name {
    font-weight: 900;
    margin-bottom: var(--space-s);
}

.author-role {
    font-weight: 600;
    color: var(--color-blur);
    font-size: 0.85rem;
    margin-top: 0;
    margin-bottom: var(--space-m);
}

.author-desc {
    font-weight: 500;
    font-size: 0.8rem;
}

/* Post Navigation (Prev/Next) */
.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-4xl);
}

.post-nav__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3xl) var(--space-xl);
    border: var(--border-thick) solid var(--color-blur);
    background: var(--color-paper);
    text-decoration: none;
    color: inherit;
    transition: background 0.2s ease;
}

.post-nav__item:hover {
    opacity: 0.7;
}

.post-nav__title {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.6;
    flex: 1;
    border-bottom: 0;
    margin-bottom: 0;
}

.post-nav__arrow {
    font-size: 1.5rem;
    color: var(--color-ink);
    opacity: 0.6;
    flex-shrink: 0;
}

.post-nav__prev {
    justify-content: flex-start;
}

.post-nav__prev .post-nav__arrow {
    margin-right: var(--space-l);
}

.post-nav__prev .post-nav__title,
.post-nav__next .post-nav__title {
    text-align: left;
}

.post-nav__next {
    justify-content: flex-end;
}

.post-nav__next .post-nav__arrow {
    margin-left: var(--space-l);
}


/* Pickup (on Single Page) */
.pickup {
    margin-top: var(--space-5xl);
}

.pickup-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

/* =================================================
   Components - Post Card
================================================= */
.post-card {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.post-card__header {
    display: flex;
    flex-direction: column;
    column-gap: var(--space-l);
    row-gap: var(--space-s);
}

.post-card__img {
    order: 1;
    border: var(--border-thick) solid var(--color-ink);
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.post-card__img img {
    width: 70%;
    margin: auto;
}

.post-card__img a {
    display: block;
    position: relative;
}

.post-card__img a::after {
    content: "";
    position: absolute;
    inset: 0;
}

.post-card__title {
    order: 2;
}

.post-card__detail {
    order: 3;
    display: flex;
    align-items: center;
}

.post-card__tags,
.post-card__date {
    font-size: 0.8rem;
}

.post-card__tags {
    font-weight: 700;
}

.post-card__tags li a {
    display: inline-block;
    padding: var(--space-xs) var(--space-s);
    background-color: var(--color-ink);
    color: var(--color-paper);
    margin-right: var(--space-m);
}

footer .footer-inner {
    padding: var(--space-l) var(--space-m);
}


/* =================================================
   Search Modal
================================================= */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.search-modal.is-active {
    opacity: 1;
    visibility: visible;
}

.search-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.search-modal__content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-l);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.search-modal.is-active .search-modal__content {
    transform: translateY(0);
}

.search-modal__close {
    position: absolute;
    top: var(--space-2xl);
    right: var(--space-2xl);
    background-color: var(--color-paper);
    box-shadow: 4px 4px 0 var(--color-shadow);
    color: var(--color-ink);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.search-modal__close:hover {
    transform: rotate(90deg) scale(1.1);
    background-color: var(--color-ink);
    color: var(--color-paper);
}

.search-modal__close .material-symbols-outlined {
    font-size: 3rem;
}

.search-modal__inner {
    background-color: var(--color-paper);
    max-width: 600px;
    width: 100%;
    padding: var(--space-4xl) var(--space-3xl);
    box-shadow: 8px 8px 0 var(--color-shadow);
}

.search-modal__title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: var(--space-3xl);
    text-align: center;
    border: none;
}

/* Search Section */
.search-section {
    margin-bottom: var(--space-3xl);
}

.search-section:last-child {
    margin-bottom: 0;
}

.search-section__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-m);
    border-bottom: var(--border-thick) solid var(--color-blur);
}

/* Search Input */
.search-input-wrapper {
    display: flex;
    gap: var(--space-s);
}

.search-input {
    flex: 1;
    padding: var(--space-m) var(--space-l);
    font-size: 1rem;
    font-family: var(--font-base);
    border: var(--border-thick) solid var(--color-ink);
    background-color: var(--color-paper);
    color: var(--color-ink);
    transition: box-shadow 0.3s ease;
}

.search-input:focus {
    outline: none;
    box-shadow: 4px 4px 0 var(--color-ink);
}

.search-input::placeholder {
    color: var(--color-blur);
}

.search-btn {
    padding: var(--space-m) var(--space-l);
    background-color: var(--color-ink);
    color: var(--color-paper);
    border: var(--border-thick) solid var(--color-ink);
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.search-btn:hover {
    background-color: var(--color-paper);
    color: var(--color-ink);
}

.search-btn .material-symbols-outlined {
    font-size: 1.5rem;
}

/* Tag List */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-m);
}

.tag-item {
    padding: var(--space-s) var(--space-l);
    background-color: var(--color-ink);
    color: var(--color-paper);
    font-weight: 700;
    font-size: 0.95rem;
    border: var(--border-thick) solid var(--color-ink);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.tag-item:hover {
    background-color: var(--color-paper);
    color: var(--color-ink);
    transform: translateY(-2px);
    opacity: 1;
}

/* =================================================
   404 Error Page
================================================= */
.error-404 {
    min-height: calc(100vh - 240px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0;
}

.error-404__content {
    text-align: center;
    max-width: 600px;
    padding: var(--space-4xl) var(--space-2xl);
}

.error-404__title {
    font-size: 8rem;
    font-weight: 900;
    line-height: 1;
    color: var(--color-ink);
    margin-bottom: var(--space-l);
    letter-spacing: 0.05em;
}

.error-404__message {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--color-ink);
}

.error-404__description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-blur);
    margin-bottom: var(--space-3xl);
}

.error-404__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-s);
    padding: var(--space-m) var(--space-3xl);
    background-color: var(--color-ink);
    color: var(--color-paper);
    border: var(--border-thick) solid var(--color-ink);
    font-weight: 700;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.error-404__link:hover {
    background-color: var(--color-paper);
    color: var(--color-ink);
    transform: translateY(-2px);
    opacity: 1;
}

.error-404__link .material-symbols-outlined {
    font-size: 1.5rem;
}



/* =================================================
   Responsive - 768px
================================================= */
@media (max-width: 768px) {

    /* Base Layout */
    .wrapper {
        padding: 0 4%;
    }

    section,
    .single {
        margin-top: var(--space-4xl);
    }

    /* Header */
    .header .inner {
        padding: var(--space-m);
    }

    .header .menu {
        font-size: 1.1rem;
    }

    /* Main Visual */
    .mv {
        flex-direction: column-reverse;
        gap: var(--space-2xl);
        padding: var(--space-4xl) 0;
    }

    .mv img.mv-txt,
    .mv img.mv-pen {
        width: var(--col-6);
    }

    /* Pickup & Shelf */
    #pickup .post-list,
    .pickup-list {
        grid-template-columns: 1fr;
    }

    #shelf .post-list {
        grid-template-columns: repeat(2, 1fr);
    }


    /* Post Navigation */
    .post-nav {
        gap: var(--space-m);
    }

    .post-nav__next .post-nav__title {
        text-align: right;
    }


    /* Profile */
    .author-box__prof {
        flex-direction: column;
        gap: var(--space-s);
    }

    .author-box__text {
        width: 100%;
        text-align: left;
    }

    /* Search Modal */
    .search-modal__close {
        top: var(--space-l);
        right: var(--space-l);
        width: 52px;
        height: 52px;
    }

    .search-modal__close .material-symbols-outlined {
        font-size: 2.5rem;
    }

    .search-modal__inner {
        padding: var(--space-3xl) var(--space-xl);
    }

    .search-modal__title {
        font-size: 2.5rem;
        margin-bottom: var(--space-2xl);
    }


    /* 404 Page */
    .error-404__content {
        padding: var(--space-3xl) var(--space-l);
    }

    .error-404__title {
        font-size: 6rem;
    }

    .error-404__message {
        font-size: 1.8rem;
    }
}

/* =================================================
   Responsive - 414px
================================================= */
@media (max-width: 414px) {

    /* Base */
    body {
        font-size: 0.95rem;
        line-height: 1.9;
    }

    section,
    .single {
        margin-top: var(--space-3xl);
    }

    /* Typography */
    h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }

    h2 {
        font-size: 2rem;
        line-height: 1.4;
        margin-bottom: var(--space-l);
    }

    h2 .sub-title {
        font-size: 1.1rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    p {
        font-size: 0.95rem;
    }

    /* Header */
    .header .material-symbols-outlined {
        font-size: 2rem;
    }

    .header .sub-menu {
        font-size: 0.7rem;
    }

    /* Main Visual */
    .mv {
        gap: var(--space-l);
        padding: var(--space-2xl) 0;
    }

    .mv img.mv-txt,
    .mv img.mv-pen {
        width: var(--col-8);
    }

    /* Pickup */
    #pickup .post-list {
        gap: var(--space-l);
    }

    /* Shelf */
    #shelf .post-list {
        grid-template-columns: 1fr;
        gap: var(--space-l);
    }

    #shelf .more-link a {
        padding: var(--space-s) var(--space-4xl);
        margin-top: var(--space-4xl);
    }

    /* Post Card */
    .post-card__title {
        font-size: 1.05rem;
        line-height: 1.4;
    }

    .post-card__detail {
        font-size: 0.85rem;
    }

    /* Table of Contents */
    #rtoc-mokuji-wrapper {
        padding: var(--space-m);
        font-size: 0.8rem;
        border-width: 2px;
    }

    /* Post Navigation */

    .post-nav {
        grid-template-columns: 1fr;
    }

    .post-nav__item {
        padding: var(--space-xl) var(--space-m);
    }

    .post-nav__title {
        font-size: 1rem;
    }

    .post-nav__next .post-nav__title {
        text-align: left;
    }

    /* Hover / Animation */
    a:hover {
        transform: none;
    }


    /* Search Modal */

    .search-modal__content {
        padding: var(--space-m);
    }

    .search-modal__close {
        top: var(--space-m);
        right: var(--space-m);
        width: 48px;
        height: 48px;
    }

    .search-modal__close .material-symbols-outlined {
        font-size: 2rem;
    }

    .search-modal__inner {
        padding: var(--space-2xl) var(--space-l);
        box-shadow: 4px 4px 0 var(--color-shadow);
    }

    .search-modal__title {
        font-size: 2rem;
        margin-bottom: var(--space-xl);
    }

    .search-section {
        margin-bottom: var(--space-xl);
    }

    .search-section__title {
        font-size: 1.1rem;
    }

    .search-input-wrapper {
        gap: var(--space-s);
    }

    .search-input {
        font-size: 0.9rem;
        padding: var(--space-s) 12px;
        min-width: 0;
    }

    .search-btn {
        padding: var(--space-s) 12px;
        flex-shrink: 0;
    }

    .search-btn .material-symbols-outlined {
        font-size: 1.3rem;
    }

    .tag-list {
        gap: var(--space-s);
    }

    .tag-item {
        font-size: 0.85rem;
        padding: var(--space-s) var(--space-m);
    }

    /* 404 Page */
    .error-404 {
        min-height: calc(100vh - 200px);
        padding: var(--space-2xl) 0;
    }

    .error-404__content {
        padding: var(--space-xl) var(--space-m);
    }

    .error-404__title {
        font-size: 5rem;
        margin-bottom: var(--space-m);
    }

    .error-404__message {
        font-size: 1.5rem;
        margin-bottom: var(--space-l);
    }

    .error-404__description {
        font-size: 0.9rem;
        margin-bottom: var(--space-2xl);
    }

    .error-404__link {
        padding: var(--space-s) var(--space-m);
        font-size: 1rem;
    }

    .error-404__link .material-symbols-outlined {
        font-size: 1.3rem;
    }
}