@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+TC:wght@300;400;500;700;900&display=swap');

:root {
    --font-primary: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* 現代色彩體系 (HSL Curated Palette) */
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: rgba(79, 70, 229, 0.1);
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-text-main: #0f172a;
    --color-text-muted: #64748b;
    
    /* 漸層與背景 */
    --bg-mesh: radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
               radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.15) 0px, transparent 50%),
               radial-gradient(at 50% 100%, rgba(236, 72, 153, 0.1) 0px, transparent 50%),
               #f8fafc;
    
    /* 毛玻璃與卡片 */
    --glass-surface: rgba(255, 255, 255, 0.88);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.07), 0 0 1px 1px rgba(255, 255, 255, 0.9) inset;
    --card-hover-shadow: 0 25px 50px -12px rgba(79, 70, 229, 0.12);
    
    /* 圓角 */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

body.dark-theme {
    --bg-mesh: radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.25) 0px, transparent 50%),
               radial-gradient(at 100% 0%, rgba(14, 165, 233, 0.2) 0px, transparent 50%),
               radial-gradient(at 50% 100%, rgba(168, 85, 247, 0.15) 0px, transparent 50%),
               #0b0f19;
    --glass-surface: rgba(17, 24, 39, 0.85);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05) inset;
    --color-text-main: #f1f5f9;
    --color-text-muted: #94a3b8;
}

/* 全域基礎排印 */
body {
    font-family: var(--font-primary);
    background: var(--bg-mesh);
    background-attachment: fixed;
    color: var(--color-text-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 核心毛玻璃卡片 */
.glass-panel {
    background: var(--glass-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 現代功能按鈕方塊 (System Action Card) */
.sys-action-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-lg);
    padding: 22px 16px;
    text-decoration: none;
    color: var(--color-text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: all 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
    min-height: 145px;
    -webkit-tap-highlight-color: transparent;
}

.sys-action-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sys-action-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--card-hover-shadow);
    color: var(--color-primary);
    background: rgba(255, 255, 255, 0.95);
}

.sys-action-card:hover::before {
    opacity: 1;
}

.sys-action-card:active {
    transform: scale(0.96);
}

/* 圖示容器外框 */
.sys-icon-box {
    width: 60px;
    height: 60px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.9rem;
    margin-bottom: 12px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.sys-action-card:hover .sys-icon-box {
    transform: scale(1.12) rotate(2deg);
}

/* 子系統專屬微色調 */
.icon-theme-borrow { background: linear-gradient(135deg, rgba(147, 51, 234, 0.12), rgba(168, 85, 247, 0.05)); color: #9333ea; }
.icon-theme-site   { background: linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(251, 146, 60, 0.05)); color: #ea580c; }
.icon-theme-asset  { background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(99, 102, 241, 0.05)); color: #4f46e5; }
.icon-theme-device { background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(34, 211, 238, 0.05)); color: #0891b2; }
.icon-theme-erp    { background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(52, 211, 153, 0.05)); color: #059669; }
.icon-theme-flow   { background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(251, 191, 36, 0.06)); color: #d97706; }
.icon-theme-mail   { background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(248, 113, 113, 0.05)); color: #dc2626; }
.icon-theme-admin  { background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(14, 165, 233, 0.1)); color: #4f46e5; border: 1.5px dashed rgba(79, 70, 229, 0.35); }

/* 現代膠囊使用者徽章 */
.premium-user-capsule {
    background: rgba(16, 185, 129, 0.1);
    color: #065f46;
    padding: 8px 18px;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(16, 185, 129, 0.2);
    margin-bottom: 22px;
}

/* 現代輸入框 */
.modern-input {
    border-radius: var(--radius-md) !important;
    padding: 14px 18px !important;
    background: rgba(248, 250, 252, 0.8) !important;
    border: 1.5px solid rgba(226, 232, 240, 0.8) !important;
    transition: all 0.2s ease !important;
    font-size: 0.95rem !important;
}

.modern-input:focus {
    background: #ffffff !important;
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12) !important;
}

/* 現代漸層主按鈕 */
.modern-btn-primary {
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%) !important;
    color: #ffffff !important;
    border: none !important;
    border-radius: var(--radius-md) !important;
    padding: 14px !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px;
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.4) !important;
    transition: all 0.25s ease !important;
}

.modern-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(79, 70, 229, 0.5) !important;
}

.modern-btn-primary:active {
    transform: scale(0.98);
}