/* public/css/common.css */

:root {
    --primary-color: #007bff;
    --primary-color-hover: #0056b3;
    --background-color: #f0f2f5; 
    --card-background: #ffffff;
    --text-color: #212529;
    --text-secondary-color: #6c757d;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.075);
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --particle-color-light: rgba(0, 123, 255, 0.2);
    --particle-color-dark: rgba(255, 255, 255, 0.1);

    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    --spacing-xs: 0.25rem; 
    --spacing-sm: 0.5rem; 
    --spacing-md: 1rem; 
    --spacing-lg: 1.5rem; 
    --spacing-xl: 2rem;
    --border-radius-sm: 0.2rem; 
    --border-radius-md: 0.375rem; 
    --border-radius-lg: 0.5rem;

    --shadow-sm: 0 1px 2px 0 var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -4px var(--shadow-color);
}

body.dark-theme {
    --primary-color: #3391ff;
    --primary-color-hover: #5ca4ff;
    --background-color: #121212;
    --card-background: #1e1e1e;
    --text-color: #e9ecef;
    --text-secondary-color: #adb5bd;
    --border-color: #343a40;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-family: var(--font-family-base); font-size: var(--font-size-base); line-height: var(--line-height-base); }

body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
}

/* 背景粒子效果 */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
    margin: 0;
}

#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; /* 置于最底层 */
    background-color: transparent; /* 背景色由 body 决定，这里透明 */
    pointer-events: auto; /* 允许鼠标交互(连线/排斥) */
}


.btn { display: inline-flex; align-items: center; gap: var(--spacing-sm); padding: 0.6rem 1.2rem; font-size: 0.95rem; font-weight: 500; text-align: center; text-decoration: none; cursor: pointer; border: 1px solid transparent; border-radius: var(--border-radius-md); transition: all 0.2s ease-in-out; }
.btn-primary { color: #fff; background-color: var(--primary-color); border-color: var(--primary-color); }
.btn-primary:hover { background-color: var(--primary-color-hover); border-color: var(--primary-color-hover); }
.btn:active { transform: scale(0.98); }

.panel-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.5); z-index: 999; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s; }
.panel-overlay.visible { opacity: 1; visibility: visible; }
.side-panel { 
    position: fixed; 
    top: 0; 
    right: 0; 
    width: 350px; 
    max-width: 90vw; 
    height: 100%; 
    background-color: var(--card-background); 
    box-shadow: var(--shadow-lg); 
    z-index: 1000; 
    display: flex; 
    flex-direction: column; 
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.3s ease-in-out, visibility 0.3s; 
}
.side-panel.visible { 
    transform: translateX(0);
    visibility: visible;
}
.panel-header, .modal-header { padding: var(--spacing-md) var(--spacing-lg); border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.panel-content, .modal-content { padding: var(--spacing-lg); flex-grow: 1; overflow-y: auto; }
.panel-footer, .modal-footer { padding: var(--spacing-md) var(--spacing-lg); border-top: 1px solid var(--border-color); }
.close-btn { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-secondary-color); }
.form-group { margin-bottom: var(--spacing-md); }
.form-group label { display: block; margin-bottom: var(--spacing-sm); }
.form-group input[type="number"] { width: 100%; padding: var(--spacing-sm); border: 1px solid var(--border-color); border-radius: var(--border-radius-md); background-color: var(--background-color); color: var(--text-color); }
.switch-group { display: flex; justify-content: space-between; align-items: center; }
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border-color); transition: .4s; border-radius: 24px; }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--primary-color); }
input:checked + .slider:before { transform: translateX(20px); }


#toast-container { position: fixed; top: var(--spacing-lg); right: var(--spacing-lg);  z-index: 10000 !important;  display: flex; flex-direction: column; align-items: flex-end; gap: var(--spacing-md);pointer-events: auto; }
.toast { background-color: var(--card-background); color: var(--text-color); padding: var(--spacing-md) var(--spacing-lg); border-radius: var(--border-radius-md); box-shadow: var(--shadow-lg); border-left: 5px solid var(--primary-color); opacity: 0; transform: translateX(100%); transition: all 0.4s ease-in-out; animation: toast-in 0.4s forwards; }
.toast.success { border-left-color: var(--success-color); }
.toast.error { border-left-color: var(--danger-color); }
.toast.warning { border-left-color: var(--warning-color); }
@keyframes toast-in { to { opacity: 1; transform: translateX(0); } }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); z-index: 1010; opacity: 0; visibility: hidden; transition: opacity 0.3s ease; }
.modal-overlay.visible { opacity: 1; visibility: visible; }
.modal { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0.95); width: 90%; max-width: 500px; background-color: var(--card-background); border-radius: var(--border-radius-lg); box-shadow: var(--shadow-lg); z-index: 1020; display: flex; flex-direction: column; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, transform 0.3s ease; }
.modal.visible { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }
.modal-content ul { padding-left: var(--spacing-lg); }
.modal-content li { margin-bottom: var(--spacing-xs); }
.modal-footer { text-align: right; }