/* ===== css/style.css ===== */
/* 修改后：蓝色卡片置于页面底部，保持原有配色风格 */

/* ----- 全局重置与基础 ----- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', system-ui, sans-serif;
    background: #f8faff;
    color: #1e2b3c;
    line-height: 1.6;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ----- 头部 ----- */
header {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 60px 20px 80px;
    text-align: center;
    flex-shrink: 0;
}

header h1 {
    font-size: 2.8rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ----- 导航 ----- */
nav {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 999;
    flex-shrink: 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav a {
    color: #555;
    text-decoration: none;
    padding: 14px 18px;
    font-size: 0.95rem;
    transition: color 0.3s;
}

nav a:hover {
    color: #2a5298;
}

/* ----- 主容器 — 弹性撑开，让footer和蓝色卡片在底部 ----- */
.container {
    flex: 1 0 auto;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px 20px;
    width: 100%;
    display: flex;
    flex-direction: column;
}

/* ----- 区块卡片 ----- */
.section {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.05);
    flex: 1 0 auto;
}

.section-title {
    font-size: 1.8rem;
    color: #1e3c72;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #2a5298;
}

/* ----- 信息网格 ----- */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.info-card {
    background: #f8fafd;
    border-radius: 10px;
    padding: 20px;
    transition: transform 0.3s;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card h3 {
    color: #2a5298;
    margin-bottom: 12px;
}

/* ----- 列表样式 ----- */
.section ul {
    padding-left: 20px;
}

.section ul li {
    margin-bottom: 8px;
    list-style: disc;
}

/* ----- 按钮 ----- */
button {
    margin-top: 16px;
    padding: 10px 20px;
    background: #2a5298;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #1e3c72;
}

/* ----- 提示框 ----- */
.tip-box {
    margin-top: 12px;
    padding: 12px;
    background: #e8f0fe;
    border-radius: 6px;
    color: #1e3c72;
}

/* ========================================
   ★★★ 蓝色卡片 (校训卡) — 置于页面最底部 ★★★
   ======================================== */
.blue-card-wrapper {
    margin-top: auto;          /* 关键：将卡片推至容器底部 */
    padding-top: 20px;
    width: 100%;
    display: flex;
    justify-content: center;
}

.blue-card {
    background: linear-gradient(135deg, #1a3f7a, #2a5298);
    color: white;
    border-radius: 40px;
    padding: 2.2rem 3rem;
    max-width: 820px;
    width: 100%;
    box-shadow: 0 20px 40px -8px rgba(26, 58, 107, 0.4);
    text-align: center;
    transition: 0.25s ease;
    border: 1px solid rgba(255,255,255,0.15);
}

.blue-card:hover {
    transform: scale(1.01);
    box-shadow: 0 28px 48px -10px rgba(26, 58, 107, 0.55);
}

.blue-card .card-title {
    font-size: 2.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 0.3rem;
}

.blue-card .card-sub {
    font-size: 1.3rem;
    font-weight: 300;
    opacity: 0.92;
    letter-spacing: 1px;
}

.blue-card .card-divider {
    width: 70px;
    height: 3px;
    background: rgba(255,255,255,0.35);
    margin: 0.8rem auto 1rem;
    border-radius: 10px;
}

.blue-card .card-motto {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 2px;
    background: rgba(255,255,255,0.08);
    padding: 0.5rem 1.8rem;
    border-radius: 60px;
    display: inline-block;
    border: 1px solid rgba(255,255,255,0.08);
}

.blue-card .card-footer {
    margin-top: 1.5rem;
    font-size: 1.1rem;
    opacity: 0.85;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem 2rem;
}

.blue-card .card-footer i {
    font-style: normal;
    background: rgba(255,255,255,0.08);
    padding: 0.2rem 1.2rem;
    border-radius: 40px;
}

/* ----- 页脚 (footer) — 恢复原配色，与头部一致 ----- */
footer {
    background-color: #1e3c72;   /* 恢复为原来的深蓝色 */
    color: white;                /* 恢复为白色文字 */
    text-align: center;
    padding: 25px 20px;
    margin-top: 0;
    flex-shrink: 0;
}

footer p {
    opacity: 0.9;
}

/* ----- 响应式 ----- */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    nav a {
        padding: 10px 12px;
        font-size: 0.85rem;
    }
    .section {
        padding: 20px;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .blue-card {
        padding: 1.8rem 1.5rem;
        border-radius: 32px;
    }
    .blue-card .card-title {
        font-size: 1.8rem;
    }
    .blue-card .card-sub {
        font-size: 1.1rem;
    }
    .blue-card .card-motto {
        font-size: 1.2rem;
        padding: 0.4rem 1.2rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 40px 20px 60px;
    }
    header h1 {
        font-size: 1.6rem;
    }
    .section-title {
        font-size: 1.4rem;
    }
    .blue-card .card-footer {
        flex-direction: column;
        gap: 0.4rem;
    }
}