/* ============================================================
   管理页面公共样式 — admin.css
   用于登录/首页/设置等不带侧边栏的独立页面
   ============================================================ */

/* ---------- Full-page centered layout ---------- */
.admin-page {
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 50%, #f1f5f9 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-font-smoothing: antialiased;
}

/* Page container */
.admin-wrapper {
    width: 100% !important;
    max-width: 1000px !important;
    margin: 0 auto;
    padding: 1.5rem;
}

.admin-wrapper,
.admin-container,
.admin-card {
    width: 100% !important;
    max-width: none !important;
    flex: none !important;
}

.admin-container {
    width: 100%;
}

/* ---------- Card ---------- */
.admin-card {
    background: white;
    border-radius: 14px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    max-width: 500px;
    margin: 0 auto;
    animation: fadeSlideUp 0.35s ease-out;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Header ---------- */
.admin-header {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    text-align: center;
    padding: 1.75rem 1.5rem;
}

.admin-header h4 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* ---------- Body ---------- */
.admin-body {
    padding: 2rem;
    text-align: center;
}

/* Icon */
.admin-icon {
    margin-bottom: 1.25rem;
}

.admin-icon i {
    font-size: 3.5rem;
    color: #22c55e;
}

.admin-body h5 {
    margin: 0 0 0.75rem 0;
    font-size: 1.35rem;
    font-weight: 700;
    color: #1e293b;
}

.admin-body p {
    margin: 0 0 1.5rem 0;
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ---------- Buttons ---------- */
.admin-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.7rem 1.5rem;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
    width: 100%;
}

.admin-btn:active {
    transform: scale(0.97);
}

.admin-btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

.admin-btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    box-shadow: 0 4px 12px rgba(37,99,235,0.25);
}

/* ---------- Login card ---------- */
.login-card {
    max-width: 420px;
}

.login-form {
    text-align: left;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: #475569;
    font-size: 0.85rem;
}

.form-control {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border: 1.5px solid #e2e8f0;
    border-radius: 10px;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: #f8fafc;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
    background: #fff;
}

.form-control::placeholder {
    color: #94a3b8;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .admin-wrapper {
        padding: 0.75rem;
    }

    .admin-header {
        padding: 1.25rem 1rem;
    }

    .admin-header h4 {
        font-size: 1.1rem;
    }

    .admin-body {
        padding: 1.5rem 1.25rem;
    }

    .admin-icon i {
        font-size: 3rem;
    }

    .admin-body h5 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .admin-wrapper {
        padding: 0.5rem;
    }

    .admin-header {
        padding: 1rem;
    }

    .admin-body {
        padding: 1.25rem 1rem;
    }
}