:root {
    --zch-overlay: rgba(15, 23, 42, 0.55);
    --zch-surface: #ffffff;
    --zch-text: #0f172a;
    --zch-muted: #6b7280;
    --zch-border: #e2e8f0;
    --zch-primary: #2563eb;
    --zch-primary-dark: #1d4ed8;
    --zch-success: #16a34a;
    --zch-warning: #f59e0b;
    --zch-danger: #dc2626;
    --zch-shadow: 0 24px 50px rgba(15, 23, 42, 0.25);
}

.zchool-modal-layer {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 99999;
    direction: rtl;
    font-family: 'Vazirmatn', 'IRANSans', Tahoma, sans-serif;
}

.zchool-modal-layer.is-open {
    display: flex;
}

.zchool-modal-backdrop {
    position: absolute;
    inset: 0;
    background: var(--zch-overlay);
    backdrop-filter: blur(6px);
}

.zchool-modal-card {
    position: relative;
    width: min(520px, 92vw);
    background: var(--zch-surface);
    border: 1px solid var(--zch-border);
    border-radius: 18px;
    box-shadow: var(--zch-shadow);
    padding: 20px 22px;
    display: grid;
    gap: 16px;
    animation: zchModalIn 0.22s ease-out;
}

.zchool-modal-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.zchool-modal-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    background: var(--zch-primary);
}

.zchool-modal-card[data-type="success"] .zchool-modal-icon {
    background: var(--zch-success);
}

.zchool-modal-card[data-type="warning"] .zchool-modal-icon {
    background: var(--zch-warning);
}

.zchool-modal-card[data-type="error"] .zchool-modal-icon {
    background: var(--zch-danger);
}

.zchool-modal-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--zch-text);
}

.zchool-modal-message {
    font-size: 14px;
    line-height: 1.8;
    color: var(--zch-text);
    white-space: pre-line;
}

.zchool-modal-input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--zch-border);
    font-size: 14px;
    font-family: inherit;
}

.zchool-modal-input:focus {
    outline: none;
    border-color: var(--zch-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.zchool-modal-actions {
    display: flex;
    justify-content: flex-start;
    gap: 12px;
    flex-wrap: wrap;
}

.zchool-btn {
    border-radius: 10px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.zchool-modal-actions .zchool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.zchool-btn-primary {
    background: var(--zch-primary);
    color: #ffffff;
    border-color: var(--zch-primary);
}

.zchool-modal-actions .zchool-btn-primary {
    background: var(--zch-primary) !important;
    color: #ffffff !important;
    border-color: var(--zch-primary) !important;
}

.zchool-btn-primary:hover {
    background: var(--zch-primary-dark);
    transform: translateY(-1px);
}

.zchool-btn-secondary {
    background: #f8fafc;
    color: var(--zch-text);
    border-color: var(--zch-border);
}

.zchool-modal-actions .zchool-btn-secondary {
    background: #f8fafc !important;
    color: var(--zch-text) !important;
    border-color: var(--zch-border) !important;
}

.zchool-btn-secondary:hover {
    transform: translateY(-1px);
}

.zchool-toast-stack {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: grid;
    gap: 12px;
    z-index: 99999;
    direction: rtl;
    font-family: 'Vazirmatn', 'IRANSans', Tahoma, sans-serif;
}

.zchool-toast {
    min-width: 220px;
    max-width: 340px;
    background: var(--zch-surface);
    border: 1px solid var(--zch-border);
    border-radius: 14px;
    padding: 12px 14px;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.18);
    display: grid;
    gap: 4px;
    transform: translateY(12px);
    opacity: 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.zchool-toast.is-visible {
    transform: translateY(0);
    opacity: 1;
}

.zchool-toast-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--zch-text);
}

.zchool-toast-message {
    font-size: 12px;
    line-height: 1.6;
    color: var(--zch-muted);
}

.zchool-toast[data-type="success"] {
    border-color: rgba(22, 163, 74, 0.4);
}

.zchool-toast[data-type="warning"] {
    border-color: rgba(245, 158, 11, 0.5);
}

.zchool-toast[data-type="error"] {
    border-color: rgba(220, 38, 38, 0.45);
}

@keyframes zchModalIn {
    from {
        transform: translateY(10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 640px) {
    .zchool-modal-card {
        padding: 16px;
    }

    .zchool-toast-stack {
        right: 16px;
        left: 16px;
    }

    .zchool-toast {
        max-width: 100%;
    }
}