/* =========================================
   style.css - PGCDA System Design System
   ========================================= */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&display=swap');

:root {
    --bg-dark: #0f172a;       
    --text-main: #e2e8f0;     
    --primary-glow: rgba(59, 130, 246, 0.5); 
}

body {
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    background-attachment: fixed; 
    background-size: cover;
    color: var(--text-main);
    margin: 0;
    line-height: 1.5;
    min-height: 100vh;
}

.glass {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.input-glass {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #fff;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-glass:focus {
    outline: none;
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(96, 165, 250, 0.5); 
    box-shadow: 0 0 15px var(--primary-glow);
    transform: translateY(-1px);
}

.input-glass::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pulse-slow {
    0%, 100% { 
        opacity: 0.2; 
        transform: scale(1); 
    }
    50% { 
        opacity: 0.15; 
        transform: scale(1.1); 
    }
}

.animate-pulse-slow {
    animation: pulse-slow 6s ease-in-out infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.loading-spinner {
    animation: spin 1s linear infinite;
    display: inline-block;
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}