/* ===== Default Theme (Light Mode) ===== */
body[data-theme="default"] {
    --color-primary: #0E8ED0;
    --color-primary-light: #7FDEDE;
    --color-secondary: #FFD900;
    --color-bg: #ECEFF1;
    --color-bg-alt: #E6E8F0;
    --color-bg-hover: #D6EBF7; 
    --color-text-main: #374151;
    --color-text-minor: #6B7280;
    --color-text-disabled: #A0A0A0;
    --color-text-negative: #808080;
    --color-link: var(--color-primary);
    --color-link-hover: var(--color-primary-light);
}

/* ===== Dark Theme ===== */
body[data-theme="dark"] {
    --color-primary: #4BA8D9;
    --color-primary-light: #5BB8E8;
    --color-secondary: #FFE44D;
    --color-bg: #1A1F2E;
    --color-bg-alt: #222835;
    --color-bg-hover: #374151; 
    --color-text-main: #E5E7EB;
    --color-text-minor: #D1D5DB;
    --color-text-disabled: #9CA3AF;
    --color-text-negative: #A0A0A0;
    --color-link: var(--color-primary);
    --color-link-hover: var(--color-primary-light);
}

/* ===== Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    background-color: var(--color-bg);
    font-family:
        /* 西文字型 */
        "Segoe UI", Tahoma, Geneva, Verdana,
        /* 繁體中文 */
        "PingFang TC", "Noto Sans TC", "Microsoft JhengHei",
        /* 日文 */
        "Noto Sans JP", "Hiragino Kaku Gothic Pro", "Yu Gothic UI",
        /* 簡體中文 */
        "Noto Sans SC", "Microsoft YaHei",
        /* 最後備援 */
        sans-serif;
    color: var(--color-text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--color-link);
    text-decoration: underline;
    /* 增加辨識度 */
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-link-hover);
}

/* ===== Header Styles ===== */
#site-header {
    background-color: var(--color-primary);
    color: white;
    padding: 0.5rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    transition: transform 0.3s ease;
}

#site-header.header-hidden {
    transform: translateY(-100%);
}

body {
    padding-top: var(--header-height, 60px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.logo-slogan {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 40px;
    width: auto;
}

.slogan {
    font-size: 1.6rem;
    font-weight: 600;
    opacity: 0.95;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

/* ===== Navigation ===== */
.main-nav {
    display: flex;
    gap: 1.5rem;
    color: white;
    text-decoration: none;
    font-weight: 500;
    align-items: center;
}

.main-nav-text {
    color: white;
    margin: 0px 3px;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0px 4px;
    position: relative;
    letter-spacing: 0.3px;
}

.main-nav a:hover {
    color: var(--color-secondary);
}

/* 底線 */
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0%;
    height: 2px;
    background-color: var(--color-secondary); /* 黃色 */
    transition: width 0.3s ease;
}

/* hover 展開 */
.main-nav a:hover::after {
    width: 100%;
}

.main-nav a.active {
    color: var(--color-secondary);
    font-weight: 700;
}

/* ===== Language Dropdown ===== */
.lang-dropdown {
    display: flex;
    align-items: center;
    position: relative;
}

.lang-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;

    list-style: none;
    margin: 0;
    padding: 6px 0;

    min-width: 120px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-text-disabled);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);

    display: none;
    z-index: 1000;
}

.lang-dropdown.open .lang-menu {
    display: block;
}

/* 語言選單項目增強 */
.lang-menu li {
    padding: 10px 16px;
    cursor: pointer;
    color: var(--color-text-main);
    font-size: 14px;
    white-space: nowrap;
    transition: all 0.2s ease;
    position: relative;
}

/* Hover效果 - 增加側邊指示器 */
.lang-menu li:hover {
    background: var(--color-bg-hover);
    padding-left: 20px;
}

.lang-menu li:hover::before {
    content: '▸';
    position: absolute;
    left: 8px;
    color: var(--color-primary);
}

/* 當前語言 - 更明顯的標記 */
.lang-menu li.active {
    font-weight: 700;
    color: var(--color-primary);
    background: linear-gradient(90deg, 
        var(--color-primary-light) 0%, 
        transparent 100%);
    background-size: 4px 100%;
    background-repeat: no-repeat;
    background-position: left;
}

/* 或添加勾選圖標 */
.lang-menu li.active::after {
    content: '✓';
    position: absolute;
    right: 12px;
    color: var(--color-primary);
    font-weight: bold;
}

/* .lang-select {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: none;
    z-index: 1000;
}

.lang-select:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.lang-select option {
    background-color: var(--color-bg);
    color: var(--color-text-main);
} */

.lang-dropdown.open .lang-select {
    display: block;
}

.lang-dropdown.open .fa-globe {
    transform: rotate(20deg);
    transition: transform 0.2s ease;
}

/* ===== Mobile language ===== */
.lang-mobile {
    width: 100%;
}

.lang-mobile-btn {
    width: 100%;
    justify-content: space-between;
}

.lang-mobile-menu {
    list-style: none;
    margin: 6px 0 0;
    padding: 0;

    display: none;
}

.lang-mobile.open .lang-mobile-menu {
    display: block;
}

.lang-mobile-menu li {
    padding: 12px 16px;
    font-size: 16px;
    cursor: pointer;
    color: var(--color-text-main);
}

.lang-mobile-menu li:hover {
    background: var(--color-bg-alt);
}

.lang-mobile-menu li.active {
    font-weight: 600;
    /* color: var(--color-primary); */
    color: white;
}

/* Responsive hamburger menu styles */
.hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-left: 8px;
    font-size: 20px;
}

.hamburger .hamburger-inner,
.hamburger .hamburger-inner::before,
.hamburger .hamburger-inner::after {
    display: block;
    width: 22px;
    height: 2px;
    background-color: #222;
    border-radius: 2px;
    position: relative;
}

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

.hamburger .hamburger-inner::before {
    top: -7px;
}

.hamburger .hamburger-inner::after {
    top: 7px;
}

@media (max-width: 768px) {}

/* ===== Main Content ===== */
.page-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    min-height: calc(100vh - 200px);
}

/* ===== Footer ===== */
footer {
    background-color: var(--color-bg-alt);
    color: var(--color-text-minor);
    text-align: center;
    padding: 1rem;
    margin-top: 3rem;
    border-top: 1px solid var(--color-primary-light);
}

footer a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--color-primary-light);
}

/* .theme-toggle-btn { */
.header-btn {
    /* width: 40px; */
    height: 40px;
    /* min-width: 40px; */
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    /* justify-content: center; */
    justify-content: left;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
}

/* .theme-toggle-btn i { */
.header-btn i {
    font-size: 1.1rem;
    width: 1.25em;
    height: 1.25em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    background: transparent;
    color: white;
    transition: transform 0.2s ease;
}

@media (max-width: 768px) {
    .theme-toggle-desktop {
        display: none;
    }
}

@media (min-width: 769px) {
    .theme-toggle-mobile {
        display: none;
    }
}

/* ===== Cookie Settings Modal ===== */

.cookie-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
}

.cookie-modal.show {
    display: block;
}

.cookie-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.cookie-modal-content {
    position: relative;
    max-width: 420px;
    margin: 10vh auto;
    background: var(--color-bg-alt);
    color: var(--color-text-main);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.cookie-modal-content h2 {
    margin-bottom: 0.5rem;
}

.cookie-desc {
    font-size: 0.9rem;
    color: var(--color-text-minor);
    margin-bottom: 1rem;
}

.cookie-option {
    margin-bottom: 1rem;
}

.cookie-option label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.cookie-option input[type="checkbox"] {
    accent-color: var(--color-primary);
}

.cookie-option p {
    font-size: 0.85rem;
    color: var(--color-text-minor);
    margin-left: 1.6rem;
}

.cookie-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-minor);
    border: 1px solid var(--color-text-minor);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
    .header-inner {
        padding: 0.5rem 1rem;
    }

    .logo-img {
        height: 36px;
    }

    .slogan {
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .main-nav a {
        margin: 0 0.4rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: inline-flex;
        align-items: center;
    }

    .header-right {
        position: relative;
        display: none;
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.5rem 1rem;
    }

    .slogan {
        display: none;
    }

    .main-nav,
    .lang-dropdown {
        /* .theme-toggle-btn { */
        display: none;
    }

    .page-content {
        padding: 0 0.75rem;
    }
}

/* === Mobile off-canvas nav，套用主題變數 === */
.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 200px;
    max-width: 320px;

    background-color: var(--color-primary);

    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.25);

    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 9999;
}

.mobile-nav-text {
    color: white;
    margin: 0px 3px;
}

.mobile-nav.open {
    transform: translateX(0);
}

.mobile-nav-inner {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
}

/* 連結樣式：用主文字顏色 + hover 用主色系 */
.mobile-nav a {
    font-size: 1.05rem;
    text-decoration: none;
    color: white;
    padding: 0.4rem 0;
}

.mobile-nav a:hover {
    color: var(--color-link);
    /* = var(--color-primary) */
}

/* 分隔線也用變數控制濃淡 */
.mobile-nav hr {
    border: none;
    border-top: 1px solid var(--color-text-disabled);
    margin: 1rem 0;
}

/* Theme toggle 放在左側，用主題色 */
.mobile-nav .theme-toggle-btn {
    align-self: flex-start;
    font-size: 1rem;
    background: transparent;
    /* border: 1px solid var(--color-text-disabled); */
    color: var(--color-text-main);
    /* padding: 0.3rem 0.6rem; */
    /* border-radius: 4px; */
    cursor: pointer;
}

.mobile-nav .theme-toggle-btn:hover {
    border-color: var(--color-link);
    color: var(--color-link);
}

/* 語言選單也沿用主題色調 */
.mobile-nav .lang-select {
    width: 100%;
    font-size: 1rem;
    padding: 0.4rem;
    border-radius: 4px;
    border: 1px solid var(--color-text-disabled);
    background-color: var(--color-bg);
    color: var(--color-text-main);
}

.svg-icon {
    width: 28px;
    height: 28px;
    fill: none;
}

/* ===== First Input Field: Add RSS ===== */
input {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    line-height: 1.4;

    color: var(--color-text-main);
    background-color: var(--color-bg-alt);

    border: 1px solid var(--color-bg-hover);
    border-radius: 8px;

    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        background-color 0.2s ease;
}

/* Placeholder：提示但不搶焦點 */
input::placeholder {
    color: var(--color-text-minor);
    opacity: 0.75;
    font-size: 14px;
}

/* Hover（桌機） */
input:hover {
    border-color: var(--color-primary-light);
}

/* Focus：第一個入口，要明顯但柔和 */
input:focus {
    outline: none;
    background-color: var(--color-bg);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(
        in srgb,
        var(--color-primary) 25%,
        transparent
    );
}

/* Disabled（保留給未來） */
input:disabled {
    background-color: var(--color-bg);
    color: var(--color-text-disabled);
    cursor: not-allowed;
}