@charset "utf-8";
/* ==========================================================================
   评议教辅 · 学校管理后台 登录页
   设计语言取自 nav.htm（山东评议教辅订购平台导航页）
   主题色：青绿（对应 nav.htm 的「学校端」卡片）
   ========================================================================== */

:root {
    /* 主题色 */
    --primary: #00897b;
    --primary-dark: #00695c;
    --primary-light: #26a69a;
    --primary-bg: #e0f2f1;
    --accent: #f5a623;
    --accent-light: #fff3e0;
    /* 文字 */
    --text-dark: #1f2937;
    --text-mid: #4b5563;
    --text-light: #6b7280;
    --white: #ffffff;
    --danger: #e84723;
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, #f0f5ff 0%, #e6edf7 40%, #dce6f0 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow-x: hidden;
    color: var(--text-dark);
}

/* ---------- 教育元素装饰背景 ---------- */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-icon {
    position: absolute;
    opacity: 0.08;
    color: var(--primary);
}

.bg-icon-1 { top: 8%; left: 5%; transform: rotate(-15deg); }
.bg-icon-2 { top: 15%; right: 8%; transform: rotate(10deg); }
.bg-icon-3 { bottom: 20%; left: 3%; transform: rotate(-5deg); }
.bg-icon-4 { bottom: 10%; right: 5%; transform: rotate(20deg); }
.bg-icon-5 { top: 45%; left: 10%; transform: rotate(-10deg); }
.bg-icon-6 { top: 50%; right: 12%; transform: rotate(5deg); }

/* ---------- 顶部渐变横幅 ---------- */
.hero-banner {
    position: relative;
    z-index: 1;
    width: 100%;
    background: linear-gradient(135deg, #1a73e8 0%, #1557b0 50%, #0d47a1 100%);
    padding: 64px 0 96px;
    text-align: center;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.03) 0%, transparent 40%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(2%, -2%); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 4px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.hero-subtitle {
    font-size: 15px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.82);
    letter-spacing: 2px;
    margin-top: 14px;
}

.hero-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), #ff8a50);
    border-radius: 2px;
    margin: 18px auto 0;
}

/* ---------- 登录卡片（悬浮压住横幅） ---------- */
.main-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    padding: 0 24px;
    margin-top: -70px;
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
}

.login-card {
    position: relative;
    width: 100%;
    max-width: 380px;
    background: var(--white);
    border-radius: 20px;
    padding: 32px 28px 28px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 137, 123, 0.06);
    text-align: center;
}

.login-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 0 0 3px 3px;
}

/* 模块图标块 */
.icon-wrap {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    flex-shrink: 0;
}

.icon-wrap svg { width: 26px; height: 26px; stroke: var(--white); fill: none; }

.icon-module {
    background: linear-gradient(135deg, #00897b 0%, #26a69a 100%);
    box-shadow: 0 4px 12px rgba(0, 137, 123, 0.3);
}

.login-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.4;
}

.login-sub {
    font-size: 12px;
    color: var(--text-light);
    margin: 6px 0 20px;
    line-height: 1.5;
}

/* ---------- 表单 ---------- */
#form_login {
    width: 100%;
    text-align: left;
}

.form-item { margin-bottom: 26px; }

.form-item > label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-mid);
    margin-bottom: 7px;
}

.field {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
}

.field .ico {
    position: absolute;
    left: 13px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    color: #9aa4b2;
    pointer-events: none;
}

.field .ico svg { width: 16px; height: 16px; }

/* 校验错误位：必须紧跟输入框之前，jquery.validate 用 element.prev('.repuired') 注入错误 */
.field .repuired {
    position: absolute;
    left: 2px;
    top: 100%;
    margin-top: 4px;
}

.field .repuired label.error {
    display: block;
    font-size: 12px;
    line-height: 16px;
    font-weight: 400;
    color: var(--danger);
}

.field .repuired label.error i { margin-right: 4px; }

.field input.text {
    width: 100%;
    height: 40px;
    padding: 0 14px 0 38px;
    font-family: inherit;
    font-size: 14px;
    color: var(--text-dark);
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.field input.text:focus {
    background: var(--white);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

/* 验证码：输入框 + 右侧常显图片，点击刷新 */
.field-captcha input.text {
    flex: 1;
    width: auto;
    min-width: 0;
}

.captcha-img {
    flex-shrink: 0;
    display: block;
    width: 90px;
    height: 40px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    background: var(--white);
    cursor: pointer;
    transition: border-color 0.25s ease;
}

.captcha-img:hover { border-color: var(--primary); }

.captcha-img img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 提交按钮 */
.login-submit {
    width: 100%;
    height: 42px;
    margin-top: 6px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    color: var(--white);
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 137, 123, 0.25);
    transition: all 0.3s ease;
}

.login-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 137, 123, 0.32);
}

.login-submit:active { transform: translateY(0); }

/* ---------- 页脚 ---------- */
.page-footer {
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 26px 20px;
    margin-top: auto;
    text-align: center;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 137, 123, 0.06);
}

.page-footer p {
    font-size: 13px;
    line-height: 1.9;
    color: var(--text-light);
    letter-spacing: 1px;
}

.page-footer a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-footer a:hover { color: var(--primary); }

/* ---------- 响应式 ---------- */
@media (max-width: 820px) {
    .hero-banner { padding: 48px 0 84px; }
    .hero-title { font-size: 28px; letter-spacing: 3px; }
    .hero-subtitle { font-size: 14px; }
}

@media (max-width: 600px) {
    .hero-banner { padding: 36px 0 70px; }
    .hero-title { font-size: 22px; letter-spacing: 2px; }
    .hero-subtitle { font-size: 13px; letter-spacing: 1px; }
    .main-content { margin-top: -50px; margin-bottom: 30px; padding: 0 16px; }
    .login-card { padding: 26px 20px 24px; border-radius: 16px; }
    .captcha-img { width: 84px; }
}

@media (max-width: 400px) {
    .captcha-img { width: 76px; }
}