/**
 * 全局通用样式 - 浅蓝色主题
 */
/* 主题色（海蓝） */
:root {
    --sea-blue: #0077b6;
    --sea-blue-2: #0096c7;
    --sea-blue-3: #00b4d8;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #a8d8f0 0%, #6bb6ff 50%, #4a9eff 100%);
    min-height: 100vh;
    padding: 20px;
}

/* 浅蓝色渐变背景变体 */
.bg-gradient-light-blue {
    background: linear-gradient(135deg, #a8d8f0 0%, #6bb6ff 50%, #4a9eff 100%);
}

.bg-gradient-blue-card {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, var(--sea-blue) 0%, var(--sea-blue-3) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 119, 182, 0.35);
}

.btn-primary:active {
    transform: translateY(0);
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    padding: 40px;
}

/* 输入框样式 */
.input-field {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s;
}

.input-field:focus {
    outline: none;
    border-color: var(--sea-blue);
    box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.12);
}

/* 链接样式 */
.card a,
a {
    color: var(--sea-blue);
}

.card a:visited,
a:visited {
    color: var(--sea-blue);
}

.card a:hover,
a:hover {
    color: var(--sea-blue-2);
}

.link-primary {
    color: var(--sea-blue);
    text-decoration: none;
    transition: color 0.3s;
}

.link-primary:hover {
    color: var(--sea-blue-2);
    text-decoration: underline;
}