/* ============================================================
   framework.css - 框架样式（移动端隐藏IP，增加公告样式）
   ============================================================ */

:root {
    --theme-color: #1A7A7F;
    --theme-color-light: #1A7A7F22;
    --theme-color-medium: #1A7A7F88;
    --theme-color-dark: #145d61;
    --bg-color: #f5f6f8;
    --bg-secondary: #ffffff;
    --text-color: #2c3e50;
    --text-secondary: #5a6c7d;
    --nav-bg: #ffffff;
    --nav-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --card-bg: #ffffff;
    --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --border-color: #e8ecf1;
    --footer-bg: #1a1a1a;
    --footer-text: #cccccc;
    --footer-link: #aaaaaa;
    --ip-box-bg: #f8f9fa;
    --ip-box-border: #e0e4e8;
    --input-bg: #ffffff;
    --input-border: #d0d5db;
    --btn-bg: #f0f2f5;
    --btn-hover: #e4e7eb;
    --modal-bg: #ffffff;
    --modal-overlay: rgba(0, 0, 0, 0.5);
    --tag-bg: #e8f4f5;
    --tag-text: #1A7A7F;
    --divider-color: #e8ecf1;
    --hover-brightness: 1.08;
    --action-bar-bg: transparent;
    --mobile-overlay-bg: rgba(0,0,0,0.7);
}

body.dark-mode {
    --bg-color: #1a1d23;
    --bg-secondary: #21252b;
    --text-color: #d4d7dc;
    --text-secondary: #a0a6b0;
    --nav-bg: #21252b;
    --nav-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --card-bg: #282c34;
    --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    --border-color: #333842;
    --ip-box-bg: #282c34;
    --ip-box-border: #3a3f4a;
    --input-bg: #2a2e37;
    --input-border: #444a55;
    --btn-bg: #333842;
    --btn-hover: #3e4450;
    --modal-bg: #282c34;
    --modal-overlay: rgba(0, 0, 0, 0.7);
    --tag-bg: #1a3a3c;
    --tag-text: #5cc4ca;
    --divider-color: #333842;
    --hover-brightness: 1.15;
    --footer-bg: #111318;
    --footer-text: #b0b0b0;
    --footer-link: #888888;
    --action-bar-bg: transparent;
    --mobile-overlay-bg: rgba(0,0,0,0.85);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.35s ease, color 0.35s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

.header-section { text-align: center; padding: 32px 20px 10px; position: relative; }
.main-title { font-size: 2.6rem; font-weight: 800; letter-spacing: 2px; color: var(--theme-color); margin-bottom: 6px; transition: color 0.35s ease; text-shadow: 0 1px 3px rgba(0,0,0,0.06); }
.sub-title { font-size: 0.95rem; color: var(--text-secondary); font-weight: 400; letter-spacing: 1px; transition: color 0.35s ease; }

.action-bar { position: relative; z-index: 1; display: flex; justify-content: flex-end; align-items: center; padding: 6px 28px; max-width: 1300px; margin: 0 auto; width: 100%; background: transparent; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-btn { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px; border-radius: 30px; border: 1.5px solid var(--border-color); background: var(--btn-bg); cursor: pointer; font-size: 0.85rem; font-weight: 500; color: var(--text-color); transition: all 0.25s ease; white-space: nowrap; letter-spacing: 0.5px; user-select: none; }
.nav-btn:hover { background: var(--btn-hover); border-color: var(--theme-color); color: var(--theme-color); }
.nav-btn .btn-icon { font-size: 0.9rem; }
.theme-color-dot { display: inline-block; width: 16px; height: 16px; border-radius: 50%; background: var(--theme-color); border: 2px solid rgba(255,255,255,0.5); box-shadow: 0 0 6px rgba(0,0,0,0.2); transition: background 0.35s ease; }
.mobile-icon { display: none; }
.mobile-menu-toggle { display: none; }

.top-info-bar { position: relative; z-index: 1; display: flex; align-items: center; justify-content: flex-start; gap: 16px; padding: 10px 28px; max-width: 1300px; margin: 0 auto; width: 100%; flex-wrap: wrap; background: transparent; }
.ip-info-box { background: var(--ip-box-bg); border: 1px solid var(--ip-box-border); border-radius: 10px; padding: 6px 14px; font-size: 0.75rem; color: var(--text-secondary); transition: all 0.35s ease; box-shadow: 0 1px 4px rgba(0,0,0,0.04); line-height: 1.4; flex-shrink: 0; }
.ip-row { display: flex; align-items: center; gap: 12px; }
.ip-item { display: flex; align-items: center; gap: 4px; white-space: nowrap; }
.ip-divider { width: 1px; height: 20px; background: var(--divider-color); transition: background 0.35s ease; }
.ip-label { font-weight: 700; font-size: 0.65rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--theme-color); transition: color 0.35s ease; }
.ip-value { font-family: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace; font-size: 0.72rem; color: var(--text-color); transition: color 0.35s ease; }
.ip-country { font-size: 0.68rem; color: var(--theme-color); font-weight: 500; transition: color 0.35s ease; }
.time-display { background: var(--ip-box-bg); border: 1px solid var(--ip-box-border); border-radius: 10px; padding: 6px 14px; font-size: 0.8rem; font-weight: 600; color: var(--text-color); transition: all 0.35s ease; letter-spacing: 1px; font-family: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace; box-shadow: 0 1px 4px rgba(0,0,0,0.04); white-space: nowrap; flex-shrink: 0; }

.desktop-nav { display: flex; flex: 1; justify-content: flex-end; }
.nav-links { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; list-style: none; position: relative; padding: 2px 4px; background: var(--nav-bg); border-radius: 30px; box-shadow: var(--nav-shadow); border: 1.5px solid var(--border-color); transition: all 0.35s ease; }
.nav-indicator { position: absolute; top: 2px; left: 0; height: calc(100% - 4px); background: var(--theme-color); border-radius: 30px; z-index: 0; transition: none; pointer-events: none; box-shadow: 0 2px 10px rgba(0,0,0,0.15); }
.nav-links li { position: relative; z-index: 1; }
.nav-links li a { display: inline-block; padding: 10px 18px; text-decoration: none; color: var(--text-color); font-weight: 500; font-size: 0.93rem; border-radius: 30px; transition: color 0.25s ease; letter-spacing: 0.5px; white-space: nowrap; background: transparent; }
.nav-links li a.active { color: #ffffff; font-weight: 600; }

.color-picker-panel { position: fixed; background: var(--modal-bg); border: 1.5px solid var(--border-color); border-radius: 14px; padding: 20px; box-shadow: 0 12px 36px rgba(0,0,0,0.3); z-index: 350; display: none; min-width: 260px; transform: translateY(4px); transition: opacity 0.2s ease, transform 0.2s ease; }
.color-picker-panel.visible { display: block; transform: translateY(0); }
.color-picker-panel .panel-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.color-picker-panel label { font-weight: 600; font-size: 0.82rem; color: var(--text-secondary); letter-spacing: 0.5px; white-space: nowrap; }
.color-picker-panel input[type="color"] { width: 48px; height: 38px; border: 2px solid var(--border-color); border-radius: 8px; cursor: pointer; background: transparent; padding: 3px; }
.color-picker-panel input[type="color"]:hover { border-color: var(--theme-color); }
.color-picker-panel input[type="text"] { flex: 1; padding: 9px 12px; border: 1.5px solid var(--input-border); border-radius: 8px; font-size: 0.88rem; background: var(--input-bg); color: var(--text-color); font-family: 'SF Mono', 'Consolas', 'Monaco', monospace; letter-spacing: 0.5px; transition: all 0.2s ease; }
.color-picker-panel input[type="text"]:focus { outline: none; border-color: var(--theme-color); box-shadow: 0 0 0 3px var(--theme-color-light); }
.color-preview-box { width: 42px; height: 38px; border-radius: 8px; border: 2px solid var(--border-color); flex-shrink: 0; background: var(--theme-color); box-shadow: inset 0 1px 3px rgba(0,0,0,0.1); }
.panel-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.panel-btn { padding: 8px 16px; border-radius: 30px; border: 1.5px solid var(--border-color); cursor: pointer; font-size: 0.82rem; font-weight: 500; letter-spacing: 0.5px; transition: all 0.2s ease; background: var(--btn-bg); color: var(--text-color); }
.panel-btn:hover { background: var(--btn-hover); }
.panel-btn.confirm-btn { background: var(--theme-color); color: #fff; border-color: var(--theme-color); font-weight: 600; }
.panel-btn.confirm-btn:hover { filter: brightness(var(--hover-brightness)); }
.panel-btn.reset-btn { background: transparent; color: #e07060; border-color: #e0706044; }
.panel-btn.reset-btn:hover { background: #e0706011; border-color: #e07060; }

/* 公告弹窗 */
.announcement-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.announcement-overlay.active {
    opacity: 1;
    visibility: visible;
}
.announcement-modal {
    background: var(--modal-bg);
    border-radius: 20px;
    padding: 30px 25px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
    text-align: left;
    position: relative;
    transition: background 0.35s ease;
}
.announcement-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--theme-color);
    margin-bottom: 8px;
}
.announcement-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}
.announcement-body {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 15px;
    color: var(--text-secondary);
}
.announcement-warning {
    font-size: 0.85rem;
    color: #e74c3c;
    margin-bottom: 15px;
    font-weight: 500;
}
.announcement-link-line {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
}
.announcement-link-line a {
    color: var(--theme-color);
    font-weight: 600;
    text-decoration: underline;
}
.announcement-close-btn {
    display: block;
    width: 100%;
    padding: 12px;
    background: var(--theme-color);
    color: #fff;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.2s ease;
    letter-spacing: 1px;
}
.announcement-close-btn:hover {
    filter: brightness(1.1);
}

.main-content { flex: 1; max-width: 1200px; margin: 0 auto; padding: 30px 24px 40px; width: 100%; min-height: 300px; }
.loading-placeholder { text-align: center; color: var(--text-secondary); padding: 60px 20px; font-size: 1.1rem; }

.site-footer { background: var(--footer-bg); color: var(--footer-text); padding: 24px 20px 20px; text-align: center; margin-top: auto; transition: background 0.35s ease, color 0.35s ease; }
.site-footer .footer-info p { margin: 0 0 8px; font-size: 0.85rem; letter-spacing: 0.5px; color: var(--footer-text); }
.social-icons { display: flex; justify-content: center; align-items: center; gap: 16px; margin: 12px 0; flex-wrap: wrap; }
.social-icon-link { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.08); color: var(--footer-link); font-size: 1.1rem; text-decoration: none; transition: all 0.3s ease; border: 1.5px solid transparent; }
.social-icon-link:hover { background: var(--theme-color); color: #fff; border-color: var(--theme-color); transform: translateY(-3px); box-shadow: 0 6px 18px rgba(0,0,0,0.3); }
.social-icon-link.disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; }
.uptime { font-size: 0.82rem; color: var(--footer-link); margin-top: 8px; letter-spacing: 0.5px; }
.uptime i { margin-right: 4px; color: var(--theme-color); }
.uptime-info { display: inline-block; cursor: help; margin-left: 4px; font-weight: 700; color: var(--theme-color); font-size: 0.85rem; }
.uptime-info:hover { color: #ffb74d; }

.mobile-nav-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--mobile-overlay-bg); z-index: 300; display: flex; flex-direction: column; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
.mobile-nav-overlay.active { opacity: 1; visibility: visible; }
.mobile-nav-content { display: flex; flex-direction: column; gap: 16px; align-items: center; }
.mobile-nav-btn { background: var(--btn-bg); border: 1.5px solid var(--border-color); color: var(--text-color); font-size: 1.2rem; font-weight: 600; padding: 14px 40px; border-radius: 40px; cursor: pointer; width: 220px; text-align: center; transition: all 0.2s ease; backdrop-filter: blur(5px); }
.mobile-nav-btn.active { background: var(--theme-color); color: #fff; border-color: var(--theme-color); }
.mobile-nav-btn:active { transform: scale(0.96); }

/* 移动端隐藏IP信息框 */
@media (max-width: 900px) {
    .ip-info-box { display: none; }
    .main-title { font-size: 2rem; }
    .sub-title { font-size: 0.85rem; }
    .action-bar { padding: 6px 16px; }
    .top-info-bar { padding: 10px 16px; gap: 12px; }
    .desktop-nav { display: none; }
    .mobile-menu-toggle { display: flex; }
    .btn-text { display: none; }
    .nav-btn { padding: 8px 12px; }
    .theme-color-dot { display: none; }
    .mobile-icon { display: inline-block; }
    .time-display { font-size: 0.75rem; padding: 6px 12px; }
    .main-content { padding: 20px 16px 30px; }
}

@media (max-width: 480px) {
    .main-title { font-size: 1.6rem; }
    .top-info-bar { flex-direction: column; align-items: stretch; }
    .time-display { align-self: flex-start; }
    .color-picker-panel { left: 50% !important; right: auto !important; transform: translateX(-50%) translateY(4px); min-width: 240px; }
    .color-picker-panel.visible { transform: translateX(-50%) translateY(0); }
}