/* ============================================================
   Quit531 — Global Styles (Optimized)
   ============================================================ */

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f7f8fa;
    color: #2c3e50;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== 导航栏 ========== */
.navbar {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    padding: 0.6rem 0 !important;
}

.navbar-brand {
    font-size: 1.55rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #fff !important;
    margin-right: 0 !important;
    padding-right: 0 !important;
    display: flex;
    align-items: center;
}

.navbar-brand img {
    margin-right: 6px !important;
    height: 36px;
    width: auto;
}

.navbar-collapse {
    justify-content: flex-start !important;
}

.navbar-nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 4px !important;
    padding-left: 0.5rem !important;
    margin-left: 0 !important;
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,.85) !important;
    font-weight: 500;
    padding: 0.45rem 0.65rem !important;
    font-size: 0.92rem;
    border-radius: 6px;
    transition: color .2s, background .2s;
    white-space: nowrap;
}

.navbar-nav .nav-link:hover {
    color: #4fc3f7 !important;
    background: rgba(255,255,255,.06);
}

.navbar-nav .btn-primary {
    background: #0d6efd;
    border: none;
    border-radius: 8px;
    padding: 0.45rem 1.1rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff !important;
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.6rem 1.5rem;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-lg { padding: 0.8rem 2rem; font-size: 1.1rem; }
.btn-primary { background: #0d6efd; border: none; }
.btn-primary:hover { background: #0b5ed7; }
.btn-success { background: #198754; border: none; }
.btn-warning { background: #ffc107; border: none; color: #212529; }
.btn-outline-secondary { border: 2px solid #6c757d; color: #6c757d; }
.btn-outline-secondary:hover { background: #6c757d; color: #fff; }
.btn-cta {
    background: linear-gradient(135deg, #0d6efd 0%, #6610f2 100%);
    border: none; color: #fff; font-size: 1.2rem; padding: 1rem 2.5rem;
    border-radius: 50px; font-weight: 700; letter-spacing: 0.5px;
}
.btn-cta:hover { color: #fff; box-shadow: 0 8px 25px rgba(13, 110, 253, 0.4); transform: translateY(-2px); }

/* ============================================================
   卡片 / Hero / 进度条 / 表单 / 提醒 / 页脚 / 打卡按钮
   ============================================================ */
.card { border: none; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: transform .2s ease, box-shadow .2s ease; overflow: hidden; }
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,.1); }
.card-body { padding: 1.5rem; }

.hero-section { background: linear-gradient(135deg, #0d6efd 0%, #6610f2 50%, #d63384 100%); color: #fff; padding: 5rem 0; text-align: center; }
.hero-section h1 { font-size: 3rem; font-weight: 800; margin-bottom: 1rem; }
.hero-section .lead { font-size: 1.3rem; opacity: 0.95; max-width: 700px; margin: 0 auto; }

.progress { height: 12px; border-radius: 6px; background: #e9ecef; overflow: hidden; }
.progress-bar { background: linear-gradient(90deg, #0d6efd 0%, #6610f2 100%); border-radius: 6px; font-weight: 600; font-size: 0.75rem; transition: width .5s ease; }

.form-control { border-radius: 8px; border: 1px solid #dee2e6; padding: 0.7rem 1rem; font-size: 1rem; transition: border-color .2s, box-shadow .2s; }
.form-control:focus { border-color: #0d6efd; box-shadow: 0 0 0 0.2rem rgba(13,110,253,.15); }

.alert { border: none; border-radius: 12px; padding: 1rem 1.5rem; font-weight: 500; }
.alert-success { background: #d1e7dd; color: #0f5132; }
.alert-danger { background: #f8d7da; color: #842029; }
.alert-warning { background: #fff3cd; color: #664d03; }
.alert-info { background: #cff4fc; color: #055160; }

footer { background: #1a1a2e; color: rgba(255,255,255,.7); padding: 2rem 0; margin-top: auto; text-align: center; }
footer a { color: rgba(255,255,255,.8); text-decoration: none; transition: color .2s; }
footer a:hover { color: #4fc3f7; }

.btn-checkin {
    font-size: 1.3rem; padding: 1rem 2.5rem; border-radius: 50px;
    background: linear-gradient(135deg, #198754 0%, #20c997 100%);
    border: none; color: #fff; font-weight: 700; animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(25,135,84,.4); } 50% { box-shadow: 0 0 0 15px rgba(25,135,84,0); } }
.btn-checkin:disabled { background: #6c757d; animation: none; }

/* ============================================================
   移动端终极修复 — 汉堡菜单强制纵向排列
   ============================================================ */
@media (max-width: 768px) {
    /* 覆盖 Bootstrap 默认 flex-direction: row */
    .navbar-collapse .navbar-nav {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 0 !important;
        padding: 0.5rem 0 !important;
        width: 100%;
    }
    .navbar-collapse .navbar-nav .nav-link {
        width: 100%;
        text-align: left;
        padding: 0.6rem 1rem !important;
        font-size: 0.95rem !important;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .navbar-collapse .navbar-nav.ms-auto {
        border-top: 1px solid rgba(255,255,255,0.15);
        margin-top: 0.3rem;
        padding-top: 0.3rem;
    }
    /* 登录/注册按钮也在移动端纵向排列 */
    .navbar-nav.ms-auto .nav-link {
        border-bottom: none;
    }
    /* 标题和按钮适配 */
    h1 { font-size: 1.5rem !important; word-break: keep-all; }
    h2 { font-size: 1.2rem !important; }
    .btn-lg { width: 100%; margin-bottom: 0.5rem; }
    .container { padding-left: 14px; padding-right: 14px; }
    .hero-section { padding: 2.5rem 0; }
    .hero-section h1 { font-size: 1.6rem; }
    .hero-section .lead { font-size: 0.95rem; }
    .navbar-brand img { height: 28px; }
}

/* ========== 手机端汉堡菜单强制纵向排列 ========== */
@media (max-width: 991px) {
    #navbarNav .navbar-nav {
        flex-direction: column !important;
    }
    #navbarNav .nav-link {
        width: 100%;
    }
}

/* ========== 手机端汉堡菜单强制纵向（仅展开后生效，不影响PC） ========== */
@media (max-width: 991px) {
    #navbarNav.show .navbar-nav {
        flex-direction: column !important;
        width: 100% !important;
    }
    #navbarNav.show .navbar-nav .nav-item {
        width: 100% !important;
    }
    #navbarNav.show .navbar-nav .nav-link {
        width: 100% !important;
        text-align: left !important;
        padding: 12px 16px !important;
    }
    #navbarNav.show .navbar-nav.ms-auto {
        margin-top: 10px;
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: 10px;
    }
}


/* ========== 手机端汉堡菜单美化（终极版） ========== */
@media (max-width: 991px) {
    #navbarNav.show .navbar-nav {
        flex-direction: column !important;
        width: 100% !important;
        margin-top: 12px;
    }
    #navbarNav.show .nav-item {
        width: 100%;
    }
    #navbarNav.show .nav-link {
        width: 100%;
        text-align: left !important;
        padding: 16px 20px !important;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        color: rgba(255,255,255,0.9);
    }
    #navbarNav.show .nav-link:last-child {
        border-bottom: none;
    }
    #navbarNav.show .navbar-nav.ms-auto {
        width: 100%;
        margin-top: 16px;
        border-top: 1px solid rgba(255,255,255,0.12);
        padding-top: 16px;
    }
    #navbarNav.show .navbar-nav.ms-auto .nav-link {
        padding: 16px 20px;
    }
    #navbarNav.show .dropdown-menu {
        width: calc(100% - 40px);
        margin: 12px 20px 0;
        border-radius: 14px;
        box-shadow: 0 8px 26px rgba(0,0,0,0.25);
        border: none;
        padding: 8px 0;
    }
    #navbarNav.show .dropdown-item {
        padding: 14px 18px;
        font-size: 1.05rem;
    }
    #navbarNav.show .dropdown-item:hover {
        background-color: #f1f7ff;
        color: #0d6efd;
    }
}

/* ========== 手机端阅读体验优化 ========== */
@media (max-width: 768px) {
    /* 正文段落左对齐 + 行高 + 左右安全边距 */
    .hero-section p,
    .container p,
    .card-body p,
    .phase-section p,
    .content-text p {
        text-align: left !important;
        line-height: 1.7 !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
        font-size: 1rem;
    }
    /* 标题居中保持 */
    .hero-section h1,
    .hero-section h2,
    .container h2 {
        text-align: center !important;
        padding-left: 16px;
        padding-right: 16px;
        font-size: 1.4rem;
    }
    /* 按钮左右留白 */
    .btn-lg {
        margin-left: 16px;
        margin-right: 16px;
        width: calc(100% - 32px);
    }
    /* 卡片内容左右留白 */
    .card-body {
        padding-left: 16px !important;
        padding-right: 16px !important;
    }
}

/* ============================================================
   首页5-3-1卡片与CTA交互优化 (追加)
   ============================================================ */

/* 531阶段卡片容器 - 响应式网格布局 */
.phases-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 40px 16px;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

/* 卡片基础样式 */
.phase-card {
  background: #ffffff;
  padding: 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* 悬浮上浮动效 */
.phase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

/* CTA按钮交互效果 */
.cta-button:hover {
    transform: scale(1.03);
}
.cta-button:active {
    transform: scale(0.98);
}

/* 平板以下 页脚导航改为单列 */
@media (max-width: 991px) {
    .footer-nav-wrap {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }
}

/* 手机端 卡片强制单列 */
@media (max-width: 768px) {
    .phases-container {
        grid-template-columns: 1fr !important;
    }
}

/* ========== 页脚移动端适配 ========== */
@media (max-width: 991px) {
    .footer-nav-wrap {
        grid-template-columns: 1fr !important;
        gap: 40px !important;
    }
}

/* ========== 页脚加固锁定（防全局样式污染） ========== */
.site-footer .footer-wrap { max-width: 1280px !important; margin: 0 auto !important; }
.site-footer .footer-grid { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 60px !important; }
.site-footer .col-grid { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 16px 8px !important; }
@media (max-width: 991px) {
    .site-footer .footer-grid { grid-template-columns: 1fr !important; gap: 40px !important; }
}

/* ========== 页脚移动端适配（最终版） ========== */
@media (max-width: 991px) {
    .site-footer .footer-grid {
        display: grid !important;
        grid-template-columns: 1fr !important;
        gap: 40px !important;
    }
    .site-footer .col-grid {
        gap: 18px 10px !important;
    }
}
@media (max-width: 768px) {
    .site-footer p:nth-of-type(1) {
        display: flex;
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* ========== 页脚移动端适配（最终定稿） ========== */
@media (max-width: 991px) {
    .site-footer .footer-grid {
        display: grid !important;
        grid-template-columns: 1fr !important;
        gap: 40px !important;
    }
    .site-footer .col-grid a {
        text-align: center !important;
    }
}
@media (max-width: 768px) {
    .site-footer .col-grid {
        gap: 20px 12px !important;
    }
    .site-footer > div > div:nth-child(3) p:first-child {
        display: flex;
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}