/**
 * CÁC THÀNH PHẦN DÙNG CHUNG (SHARED COMPONENTS)
 * Chứa CSS cho Modal, Toast, Thẻ thông báo lỗi, và các class tiện ích hiển thị.
 */

/* Lớp tiện ích trạng thái hiển thị */
.hidden {
    display: none !important;
}

.d-none {
    display: none !important;
}

.d-block {
    display: block !important;
}

.d-flex {
    display: flex !important;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: #64748b;
}

.text-danger {
    color: #ef4444;
}

.text-success {
    color: #10b981;
}

.text-warning {
    color: #d97706;
}

.font-bold {
    font-weight: 700;
}

/* Modal dùng chung */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: #ffffff;
    border-radius: 12px;
    width: 100%;
    max-width: 600px;
    padding: 1.5rem;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
}

.modal-content-lg {
    max-width: 820px;
}

.modal-content-sm {
    max-width: 450px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #0f172a;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: #64748b;
    padding: 0.25rem;
}

.modal-close:hover {
    color: #0f172a;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid #e2e8f0;
}

/* Trang thông báo lỗi chung (error.html) */
body.error-page {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 1.5rem;
}

.error-card {
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    padding: 3.5rem 2.5rem;
    max-width: 520px;
    width: 100%;
    text-align: center;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
}

.error-code {
    font-size: 4.5rem;
    font-weight: 900;
    color: #d97706;
    line-height: 1;
    margin-bottom: 0.75rem;
    letter-spacing: -2px;
}

.error-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 0.75rem;
}

.error-message {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.error-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}