/* ============================================================
   DESIGN SYSTEM - LIQUID GLASSMORPHISM (Pure Monochrome & Titanium Edition)
   Colors: Immersive Deep Black (#000000), Pure Crisp White (#FFFFFF), 
           Refined Neutral Grays & Characterful Silver/Titanium accents
   Style: Strict No-Glow Shadow, Vibrant Refractive Monochromatic Gradients, iOS Glass
   ============================================================ */

/* ===== 1. COLOR SYSTEM & GRADIENTS ===== */
:root {
    /* 完全去除所有彩色变量，彻底回归纯黑白灰与钛金质感 */
    --gradient-brand: none;
    --gradient-cyan: none;
    --gradient-card-border: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.05) 50%, rgba(142, 142, 147, 0.3) 100%);

    /* Primary Actions */
    --primary: #ffffff;
    --primary-hover: #e5e5ea;
    --primary-bg: rgba(255, 255, 255, 0.1);

    /* Liquid Glass Grayscale Base (Pure Deep Black & Refined Grays) */
    --bg: #000000;
    
    /* 液态玻璃半透明分层：沉浸式深黑与高层次钛灰表面 */
    --card: rgba(22, 22, 26, 0.72);         
    --surface: rgba(30, 30, 38, 0.65);      
    --surface-hover: rgba(44, 44, 54, 0.80);
    
    /* 液态玻璃精细高光边界（玻璃边缘折射感） */
    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.3);
    
    /* 文字颜色层次：纯白与性格灰色阶 */
    --text: #ffffff;
    --text-secondary: #aeaeb2;
    --text-muted: #636366;

    /* 将原本的彩色变量重映射为纯粹的黑白灰性格钛金方案 */
    --brand-yellow: #ffffff;
    --brand-yellow-bg: rgba(255, 255, 255, 0.12);
    --accent-blue: #ffffff;
    --accent-blue-bg: rgba(255, 255, 255, 0.1);

    /* Function & Dimension Specs */
    --radius: 12px;
    --shadow: none;          /* 严格保持无阴影 */
    --shadow-hover: none;
    --gap: 20px;
    --header-h: 64px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    /* Functional Danger Color (保持功能性警示红，但降低饱和度使其融入黑白灰质感) */
    --danger: #ff453a;
    --danger-bg: rgba(255, 69, 58, 0.12);
    --danger-border: rgba(255, 69, 58, 0.3);
    --danger-hover: rgba(255, 69, 58, 0.2);

    /* Silk-smooth Transition Timing */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- BASE & RESET ---------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg);
    /* 底层加入纯白、银灰交织的高级冷调黑白灰背景液态光斑晕染 */
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(142, 142, 147, 0.04) 0%, transparent 50%);
    color: var(--text);
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding-bottom: 85px;
}

.app-wrapper {
    width: 100%;
    max-width: 480px;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: var(--gap);
}

/* ---------- 导航 (Navbar) - 液态玻璃效果 ---------- */
.navbar {
    display: flex;
    background: rgba(18, 18, 22, 0.72);
    backdrop-filter: blur(24px) saturate(190%);
    -webkit-backdrop-filter: blur(24px) saturate(190%);
    border: 1px solid var(--border);
    /* 严格无高亮阴影，靠渐变边框和内发光替代 */
    box-shadow: none;
    border-radius: 20px;
    justify-content: space-between;
    align-items: center;
    height: var(--header-h);
    margin-top: 24px;
    padding: 0px 24px;
    transition: var(--transition-smooth);
    position: relative;
}

.navbar::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 20px;
    padding: 1px;
    background: var(--gradient-card-border);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0.6;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-text { display: flex; align-items: center; gap: 8px; }
.brand-text .title { 
    font-weight: 800; 
    font-size: 19px; 
    color: #ffffff; 
    letter-spacing: -0.5px;
}
.brand-text .badge {
    /* 采用纯白银灰钛金质感标签 */
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 10px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.icon-btn {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    width: 40px; height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-smooth);
}
.icon-btn:hover {
    border-color: var(--border-hover);
    color: var(--text);
    background: rgba(255, 255, 255, 0.12);
    transform: scale(1.05);
}

/* ---------- 卡片 (Card) - 液态玻璃效果 ---------- */
.card {
    background: var(--card);
    backdrop-filter: blur(24px) saturate(190%);
    -webkit-backdrop-filter: blur(24px) saturate(190%);
    border-radius: var(--radius-lg);
    padding: 22px;
    border: 1px solid var(--border);
    box-shadow: none;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: var(--gradient-card-border);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0.5;
}

.card:hover {
    border-color: var(--border-hover);
    background: rgba(30, 30, 38, 0.85);
    transform: translateY(-2px);
}

.card-header { margin-bottom: 16px; }
.card-title {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}
.flex-between { display: flex; justify-content: space-between; align-items: center; }

/* ---------- 表单 (Form) ---------- */
.form-group { margin-bottom: 14px; }
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.input-wrapper { position: relative; display: flex; align-items: center; }
.input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 16px;
    pointer-events: none;
    transition: var(--transition-fast);
}
.input-wrapper input {
    width: 100%;
    padding: 12px 14px 12px 40px;
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text);
    outline: none;
    transition: var(--transition-smooth);
}
.input-wrapper input:focus {
    background: rgba(40, 40, 50, 0.9);
    /* 聚焦时使用纯白高级钛金光效代替彩色光晕 */
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.15);
    transform: scale(1.01);
}
.input-wrapper input[data-default="true"] {
    color: var(--text-muted);
    font-style: italic;
}

/* ---------- 组合框与下拉菜单 (Combo Box) ---------- */
.combo-box { position: relative; }
.combo-toggle {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition-fast);
}
.combo-toggle:hover { color: var(--text); transform: scale(1.1); }
.combo-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: rgba(22, 22, 28, 0.92);
    backdrop-filter: blur(24px) saturate(190%);
    -webkit-backdrop-filter: blur(24px) saturate(190%);
    border: 1px solid var(--border);
    box-shadow: none;
    border-radius: var(--radius-md);
    max-height: 154px;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    list-style: none;
    z-index: 999;
    padding: 6px;
    opacity: 0;
    transform: translateY(-8px);
    transition: var(--transition-smooth);
}
.combo-menu::-webkit-scrollbar { display: none; }
.combo-menu.open { 
    display: block; 
    opacity: 1;
    transform: translateY(0);
}
.combo-menu li {
    padding: 10px 12px;
    font-size: 13px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text);
    transition: var(--transition-fast);
}
.combo-menu li:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
    font-weight: 600;
    transform: translateX(4px);
}

/* ---------- 按钮 (Buttons) - 液态玻璃质感 ---------- */
.action-row { display: flex; gap: 12px; margin-top: 18px; }
.btn {
    padding: 12px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-smooth);
}
.btn-primary {
    flex: 1 1 auto;
    /* 主按钮采用纯白质感与黑字的高级对比风格 */
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(200, 200, 205, 0.9));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #000000;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: none;
    min-width: 0;
}
.btn-primary:hover { 
    opacity: 0.9;
    transform: translateY(-2px);
}
.btn-ghost {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    box-shadow: none;
    color: var(--text-secondary);
}
.btn-ghost:hover { 
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    color: var(--text);
    transform: translateY(-2px);
}

/* ---------- 占位视图 (Placeholder) ---------- */
.placeholder-box {
    text-align: center;
    padding: 32px 12px;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.placeholder-icon-wrap {
    width: 54px;
    height: 54px;
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 12px auto;
    border: 1px solid var(--border);
    box-shadow: none;
    transition: var(--transition-smooth);
}
.placeholder-box:hover .placeholder-icon-wrap {
    transform: rotate(8deg) scale(1.05);
}
.placeholder-text { font-size: 13px; font-weight: 500; }

/* ---------- 结果视图 (Result View) ---------- */
.result-view {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    box-shadow: none;
    border-radius: var(--radius-md);
    padding: 16px;
    transition: var(--transition-smooth);
}
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}
.result-title { 
    font-weight: 700; 
    font-size: 13px; 
    color: var(--text);
}
.result-actions { display: flex; gap: 6px; }
.action-btn {
    background: var(--card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border);
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-smooth);
}
.action-btn:hover { 
    background: var(--surface);
    border-color: var(--border-hover);
    color: var(--text);
    transform: translateY(-1px);
}

.result-row {
    display: grid;
    grid-template-columns: 1fr 5fr;
    align-items: baseline;
    gap: 4px 10px;
    margin-bottom: 10px;
    font-size: 13px;
}
.result-row .label {
    color: var(--text-muted);
    font-weight: 600;
    white-space: nowrap;
}
.result-row .value {
    font-weight: 600;
    font-family: monospace;
    word-break: break-all;
    white-space: normal;
    min-width: 0;
    color: var(--text);
}
.result-row .value.password {
    font-size: 15px;
    /* 密码结果中采用纯白高亮，增强对比 */
    color: #ffffff;
    letter-spacing: 1px;
    font-weight: 700;
}

.strength-wrapper { margin-top: 12px; }
.strength-bar-track {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}
.strength-bar-fill {
    height: 100%;
    background: #ffffff;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.strength-info {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: 6px;
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 2px;
    transition: var(--transition-fast);
}
.text-btn:hover { color: #ffffff; transform: translateX(2px); }

/* ---------- 历史列表 (History) ---------- */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    margin-top: 4px;
}
.history-empty {
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    padding: 16px 0;
    letter-spacing: 0.3px;
}

.history-item {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    box-shadow: none;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    display: flex;
    flex-wrap: wrap;
    gap: 6px 10px;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.history-item:hover { 
    background: var(--card);
    border-color: var(--border-hover);
    transform: translateX(4px);
}
.h-left { display: flex; flex-direction: column; flex: 1 1 100px; }
.h-domain { font-size: 13px; font-weight: 700; color: var(--text); }
.h-identity { font-size: 11px; color: var(--text-muted); }
.h-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1 1 auto;
    min-width: 0;
}
.h-pwd {
    font-family: monospace;
    font-size: 12px;
    color: var(--text-secondary);
    word-break: break-all;
    white-space: normal;
    flex: 1 1 auto;
    min-width: 60px;
}
.h-copy-btn, .h-delete-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
    transition: var(--transition-fast);
}
.h-copy-btn:hover { color: #ffffff; transform: scale(1.1); }
.h-delete-btn:hover { color: var(--danger); transform: scale(1.1); }

/* ---------- Toast 提示框 (液态玻璃质感) ---------- */
.toast {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px) scale(0.95);
    background: rgba(22, 22, 26, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: var(--text);
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    z-index: 1000;
    border: 1px solid var(--border);
    box-shadow: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }

/* ---------- 底部导航栏 (Footer Nav) - 悬浮液态玻璃 ---------- */
.footer-navbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    border-radius: 24px 24px 0 0;
    background: rgba(14, 14, 18, 0.8);
    backdrop-filter: blur(24px) saturate(190%);
    -webkit-backdrop-filter: blur(24px) saturate(190%);
    border-top: 1px solid var(--border);
    box-shadow: none;
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 480px;
    margin: 0 auto;
    z-index: 90;
    padding: 0 12px;
}
.footer-action {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    box-shadow: none;
    padding: 8px 14px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text);
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition-smooth);
}
.footer-action:hover { 
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
    transform: translateY(-2px);
}
.footer-action i { 
    font-size: 16px; 
    color: var(--text-secondary);
    transition: var(--transition-fast);
}
.footer-action:hover i {
    color: #ffffff;
}

/* ---------- 模态框 (Modal) - 液态玻璃效果 ---------- */
body .modal-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
body .modal-backdrop.active { display: flex; opacity: 1; }

.modal-card {
    background: rgba(20, 20, 26, 0.9);
    backdrop-filter: blur(30px) saturate(190%);
    -webkit-backdrop-filter: blur(30px) saturate(190%);
    width: 100%;
    max-width: 440px;
    max-height: 85vh;
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    box-shadow: none;
    transform: scale(0.95) translateY(10px);
    transition: var(--transition-smooth);
    position: relative;
}

.modal-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: var(--gradient-card-border);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0.6;
}

body .modal-backdrop.active .modal-card {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.modal-header h3 { 
    font-size: 16px; 
    font-weight: 700; 
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.modal-header h3 i {
    color: #ffffff;
}
.close-icon {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 18px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}
.close-icon:hover { background: rgba(255, 255, 255, 0.1); color: var(--danger); border-color: var(--danger-border); transform: rotate(90deg); }

.modal-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.sm-btn {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--border);
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text);
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}
.sm-btn:hover { background: rgba(255, 255, 255, 0.12); border-color: var(--border-hover); transform: translateY(-1px); }

.btn-danger {
    color: var(--danger);
    border-color: var(--danger-border);
    background: var(--danger-bg);
}
.btn-danger:hover { background: var(--danger-hover); border-color: var(--danger); color: var(--danger); }

.btn-danger-ghost {
    color: var(--danger);
    background: transparent;
    border: 1px solid var(--danger-border);
}
.btn-danger-ghost:hover { background: var(--danger-bg); }

.modal-body { overflow-y: auto; flex: 1; padding-right: 2px; }
.date-header {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin: 14px 0 8px 0;
}

#modalHistoryList .h-pwd {
    word-break: break-all;
    white-space: normal;
    max-width: 100%;
    overflow: visible;
    text-overflow: unset;
    flex: 1 1 auto;
    min-width: 60px;
}
#modalHistoryList .history-item {
    flex-wrap: wrap;
    gap: 6px 10px;
    background: var(--surface);
}