/* ================================================
           MODAL CONTENT (LIMITED MAX HEIGHT)
           ================================================ */
.modal {
    position: relative;
    max-width: 700px;
    width: 100%;
    /* 核心限制：弹窗最大高度不超过视口，保证顶部和底部都可见 */
    max-height: calc(100vh - 4rem);
    background-color:rgba(6, 9, 15, 0.9);
    border: 1px solid var(--border-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card), var(--shadow-glow);
    transform: translateY(20px) scale(0.98);
    transition: transform 0.3s cubic-bezier(.4, 0, .2, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

/* Gradient Border Effect */
.modal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    z-index: 2;
}

/* ================================================
    MODAL OVERLAY (FIXED TOP CUT ISSUE)
    ================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(6, 9, 15, 0.3);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    padding: 2rem 1rem;
    overflow-y: auto;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-header {
    padding: 1.5rem 2rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
    flex-shrink: 0;
}

.modal-footer {
    padding: 1rem 2rem 1.5rem;
    border-top: 1px solid var(--border-subtle);
    background: rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.modal-body {
    padding: 1.5rem 2rem;
    /* 核心：表单内容超出时内部滚动 */
    overflow-y: auto;
    flex: 1;
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    color: var(--text-tertiary);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--bg-input-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: rotate(90deg);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.3rem;
    line-height: 1.2;
}

.modal-title .gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .modal-overlay {
        padding: 1rem 0.75rem;
    }
    .modal {
        max-height: calc(100vh - 2rem);
    }
    .modal-header,
    .modal-body,
    .modal-footer {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }
    .modal-title {
        font-size: 1.3rem;
        padding-right: 2.5rem;
    }
}