/* ============================================================
   照妖镜Pro - 现代科技风格 UI
   主题：深色渐变 + 霓虹蓝紫 + 玻璃态
   ============================================================ */

/* ===== CSS变量 ===== */
:root {
    --bg-primary: #0b0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(255,255,255,0.05);
    --bg-card-hover: rgba(255,255,255,0.08);
    --text: #e6edf5;
    --text-secondary: #8a9aa8;
    --border: rgba(255,255,255,0.06);
    --primary: #5b6ef7;
    --primary-glow: rgba(91,110,247,0.3);
    --primary-gradient: linear-gradient(135deg, #5b6ef7, #8b5cf6);
    --input-bg: rgba(255,255,255,0.04);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --radius: 20px;
    --transition: 0.25s ease;
}

/* ===== 全局重置 ===== */
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    background-image: radial-gradient(ellipse at 20% 50%, rgba(91,110,247,0.08) 0%, transparent 60%),
                      radial-gradient(ellipse at 80% 50%, rgba(139,92,246,0.06) 0%, transparent 60%);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 24px;
    padding-top: 40px;
    line-height: 1.6;
}

/* ===== 卡片 ===== */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 36px;
    max-width: 720px;
    width: 100%;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.card:hover { border-color: rgba(255,255,255,0.1); }

/* ===== 导航栏 ===== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.navbar .logo {
    font-size: 24px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}
.navbar .actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    border: none;
    border-radius: 40px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--border);
    text-decoration: none;
    user-select: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.3); }
.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    border: none;
}
.btn-primary:hover { box-shadow: 0 6px 24px var(--primary-glow); }

.btn-success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
    border: none;
}
.btn-success:hover { box-shadow: 0 6px 24px rgba(34,197,94,0.3); }

.btn-danger {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: #fff;
    border: none;
}
.btn-danger:hover { box-shadow: 0 6px 24px rgba(245,87,108,0.3); }

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--bg-card-hover); }

.btn-sm { padding: 6px 16px; font-size: 13px; }

/* ===== 输入框 ===== */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 0.3px;
}
input, select, textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--input-bg);
    color: var(--text);
    font-size: 15px;
    transition: var(--transition);
    outline: none;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(255,255,255,0.06);
}
input::placeholder { color: var(--text-secondary); opacity:0.5; }
input[readonly] { opacity: 0.6; cursor: not-allowed; }

/* ===== 模态框 ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top:0; left:0; width:100%; height:100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(6px);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}
.modal-overlay.active { display: flex; }
.modal-content {
    background: var(--bg-secondary);
    border-radius: 20px;
    max-width: 92%;
    max-height: 92%;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.6);
    animation: scaleIn 0.3s ease;
    border: 1px solid var(--border);
    position: relative;
}
.modal-content img, .modal-content video {
    display: block;
    max-width: 100%;
    max-height: 85vh;
    border-radius: 16px;
}
.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    font-size: 20px;
    cursor: pointer;
    transition: 0.2s;
    backdrop-filter: blur(4px);
}
.modal-close:hover { background: rgba(255,255,255,0.2); transform: rotate(90deg); }

/* ===== Toast ===== */
.toast {
    background: rgba(91,110,247,0.1);
    border-left: 4px solid var(--primary);
    padding: 12px 20px;
    border-radius: 12px;
    margin-bottom: 18px;
    backdrop-filter: blur(4px);
    font-size: 14px;
}

/* ===== 动画 ===== */
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes scaleIn { from { opacity:0; transform:scale(0.92); } to { opacity:1; transform:scale(1); } }

/* ===== 响应式 ===== */
@media (max-width: 640px) {
    .card { padding: 20px; }
    .navbar { flex-direction: column; align-items: stretch; gap: 12px; }
    .navbar .actions { justify-content: flex-start; }
    .btn { width: 100%; justify-content: center; }
    .btn-group { flex-direction: column; }
}