/* Base variables and reset */
:root {
    --bg-color: #0f1115;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
    --radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography & Utilities */
a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--primary-hover);
}
.highlight { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }

h1, h2, h3 { line-height: 1.2; }

/* Layouts */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
    width: 100%;
}

/* Header Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--card-border);
    margin-bottom: 2rem;
}
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}
.nav-links a.active {
    color: #fff;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    gap: 0.5rem;
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.btn-outline { background: transparent; border: 1px solid var(--card-border); color: var(--text-main); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.05); }
.btn-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.2); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.85rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* Forms & Inputs */
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-size: 0.9rem; color: var(--text-muted); }
.form-control, input[type="text"], input[type="password"], textarea, select {
    width: 100%;
    padding: 0.8rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    color: var(--text-main);
    font-family: inherit;
    transition: var(--transition);
}
.form-control:focus, input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
textarea { resize: vertical; min-height: 100px; }
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

/* Glassmorphism Auth Pages */
.auth-page { justify-content: center; align-items: center; }
.auth-wrapper { width: 100%; max-width: 400px; padding: 2rem; }
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.auth-header { text-align: center; margin-bottom: 2rem; }
.auth-header h2 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.auth-header .subtitle { color: var(--text-muted); font-size: 0.95rem; }
.auth-footer { text-align: center; margin-top: 1.5rem; font-size: 0.9rem; color: var(--text-muted); }
.auth-footer .divider { margin: 0 0.5rem; opacity: 0.5; }

/* Alerts */
.alert { padding: 1rem; border-radius: var(--radius); margin-bottom: 1.5rem; font-size: 0.95rem; }
.alert.error { background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.2); color: var(--danger); }
.alert.success { background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.2); color: var(--success); }

/* Search Bar */
.search-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    background: var(--card-bg);
    padding: 0.8rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    align-items: center;
}
.search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
}
.search-input::placeholder { color: var(--text-muted); }
.search-select {
    width: 150px;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--card-border);
    color: var(--text-main);
    border-radius: 8px;
    padding: 0.5rem;
    outline: none;
    font-size: 0.9rem;
}
.search-select option { background: var(--bg-color); }

/* Prompt Cards */
.prompt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}
.prompt-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.prompt-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
}
.prompt-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.8rem;
    gap: 1rem;
}
.prompt-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0;
    word-break: break-all;
}
.category-badge {
    background: rgba(255,255,255,0.08);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    color: #e5e7eb;
    white-space: nowrap;
}
.prompt-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.prompt-content-box {
    background: rgba(0,0,0,0.4);
    padding: 1rem;
    border-radius: 8px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 0.85rem;
    color: #cbd5e1;
    margin-bottom: 1rem;
    max-height: 120px;
    overflow-y: auto;
    border: 1px solid rgba(255,255,255,0.05);
    word-wrap: break-word;
    white-space: pre-wrap;
}
/* Custom scrollbar for content box */
.prompt-content-box::-webkit-scrollbar { width: 6px; }
.prompt-content-box::-webkit-scrollbar-track { background: transparent; }
.prompt-content-box::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }

.prompt-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--card-border);
}
.author-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #ec4899);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: bold;
    color: white;
}
.card-actions {
    display: flex;
    gap: 0.5rem;
}

/* Copy Animation */
.copy-feedback {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: rgba(16, 185, 129, 0.95);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 10;
    backdrop-filter: blur(4px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}
.copy-feedback.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}
.modal-backdrop.show {
    opacity: 1;
    pointer-events: auto;
}
.modal-content {
    background: var(--bg-color);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
.modal-backdrop.show .modal-content {
    transform: translateY(0);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}
.close-btn:hover { color: var(--text-main); }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--card-border);
}

/* Dynamic Use Panel */
.use-layout {
    display: flex;
    gap: 1.5rem;
    flex-direction: column;
}
@media (min-width: 768px) {
    .use-layout { flex-direction: row; }
    .use-sidebar { width: 250px; flex-shrink: 0; border-right: 1px solid var(--card-border); padding-right: 1.5rem; }
    .use-main { flex: 1; }
}

.var-highlight {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
    padding: 0px 4px;
    border-radius: 4px;
    font-weight: 500;
    margin: 0 2px;
}
.scroll-area {
    max-height: 350px;
    overflow-y: auto;
    padding-right: 10px;
}
.scroll-area::-webkit-scrollbar { width: 6px; }
.scroll-area::-webkit-scrollbar-track { background: transparent; }
.scroll-area::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }

/* Utilities */
.status-badge {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
}
.status-private { color: var(--text-muted); }
.status-public { color: var(--success); background: rgba(16, 185, 129, 0.1); }
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px dashed var(--card-border);
}

/* 一触即发交互块 */
.interactive-box {
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    position: relative;
    border: 1px solid rgba(255,255,255,0.08); /* 稍微提升对比度 */
}
.interactive-box:hover {
    background: rgba(99, 102, 241, 0.15); /* 使用品牌主色的浅透明底色 */
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1) inset;
}
.interactive-box::after {
    content: "🖱️ 任意处点击即复制至剪贴板";
    position: absolute;
    bottom: 8px;
    right: 12px;
    font-size: 0.75rem;
    color: #cbd5e1;
    background: rgba(15, 23, 42, 0.85); /* 深空背景突出气泡 */
    padding: 4px 10px;
    border-radius: 20px;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}
.interactive-box:hover::after {
    opacity: 1;
}