MovieLog_Server/login.php

<?php
// ============================================
// 文件: login.php
// 说明: 管理员登录页面
// ============================================

require_once 'config.php';

// 如果已登录，跳转到首页
if (isset($_SESSION['admin_id'])) {
    header('Location: index.php');
    exit;
}

$error = '';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $username = trim($_POST['username'] ?? '');
    $password = $_POST['password'] ?? '';
    
    if (empty($username) || empty($password)) {
        $error = '请输入用户名和密码';
    } else {
        $db = getDB();
        $stmt = $db->prepare("SELECT * FROM admins WHERE username = ?");
        $stmt->execute([$username]);
        $admin = $stmt->fetch();
        
        if ($admin && password_verify($password, $admin['password'])) {
            $_SESSION['admin_id'] = $admin['id'];
            $_SESSION['admin_username'] = $admin['username'];
            // 把他自己选的界面主题一起带进会话（空 = 用默认主题）
            $_SESSION['admin_theme'] = isset($admin['theme']) ? (string)$admin['theme'] : '';
            header('Location: index.php');
            exit;
        } else {
            $error = '用户名或密码错误';
        }
    }
}
?>
<!DOCTYPE html>
<html lang="zh-CN"<?= themeAttr() ?>>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title><?= h(siteName()) ?> - 登录</title>
    <link rel="stylesheet" href="css/style.css">
    <?= themesCssLink() ?>
    <style>
        /* 登录页专用样式 */
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }
        .login-container {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 24px;
            padding: 48px 40px;
            width: 100%;
            max-width: 400px;
            box-shadow: 0 30px 80px rgba(0,0,0,0.5);
            transition: transform 0.3s ease;
        }
        .login-container:hover {
            transform: translateY(-4px);
        }
        .login-logo {
            text-align: center;
            margin-bottom: 36px;
        }
        .login-logo .icon {
            font-size: 52px;
            display: block;
            margin-bottom: 8px;
        }
        .login-logo h1 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin: 0;
            letter-spacing: 2px;
        }
        .login-logo p {
            color: rgba(255,255,255,0.5);
            font-size: 14px;
            margin: 6px 0 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 6px;
        }
        .form-group input {
            width: 100%;
            padding: 14px 18px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 12px;
            color: #fff;
            font-size: 16px;
            transition: all 0.3s ease;
            box-sizing: border-box;
            outline: none;
        }
        .form-group input:focus {
            border-color: var(--primary);
            background: rgba(255,255,255,0.12);
            box-shadow: 0 0 0 4px rgba(var(--primary-rgb),0.15);
        }
        .form-group input::placeholder {
            color: rgba(255,255,255,0.3);
        }
        .btn-login {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border: none;
            border-radius: 12px;
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 8px;
            letter-spacing: 1px;
        }
        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(var(--primary-rgb),0.3);
        }
        .btn-login:active {
            transform: translateY(0);
        }
        .error-msg {
            background: rgba(231,76,60,0.2);
            border: 1px solid rgba(231,76,60,0.3);
            color: #e74c3c;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 14px;
            margin-bottom: 16px;
            text-align: center;
        }
        .login-footer {
            text-align: center;
            margin-top: 24px;
            color: rgba(255,255,255,0.3);
            font-size: 13px;
        }
        @media (max-width: 480px) {
            .login-container {
                padding: 32px 24px;
                margin: 16px;
                border-radius: 16px;
            }
            .login-logo h1 {
                font-size: 24px;
            }
        }
    </style>
</head>
<body>
    <div class="login-container">
        <div class="login-logo">
            <span class="icon">🎬</span>
            <h1><?= h(siteName()) ?></h1>
            <p>记录每一帧感动</p>
        </div>
        
        <?php if ($error): ?>
            <div class="error-msg"><?= h($error) ?></div>
        <?php endif; ?>
        
        <form method="POST" action="">
            <div class="form-group">
                <label>管理员账号</label>
                <input type="text" name="username" placeholder="请输入用户名" value="<?= h($_POST['username'] ?? '') ?>" autofocus>
            </div>
            <div class="form-group">
                <label>密码</label>
                <input type="password" name="password" placeholder="请输入密码">
            </div>
            <button type="submit" class="btn-login">登 录</button>
        </form>

    </div>
</body>
</html>