/* MODERN MODAL SYSTEM - Replaces all browser alerts */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

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

.modal-box {
    background: white;
    border-radius: 24px;
    padding: 32px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Modal Header */
.modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.modal-icon {
    font-size: 64px;
    margin-bottom: 16px;
    display: block;
}

.modal-title {
    font-size: 24px;
    font-weight: bold;
    color: #1f2937;
    margin-bottom: 8px;
}

.modal-message {
    font-size: 16px;
    color: #6b7280;
    line-height: 1.5;
}

/* Modal Types */
.modal-box.success .modal-icon { color: #10b981; }
.modal-box.error .modal-icon { color: #ef4444; }
.modal-box.warning .modal-icon { color: #f59e0b; }
.modal-box.info .modal-icon { color: #3b82f6; }
.modal-box.question .modal-icon { color: #8b5cf6; }

/* Modal Input (for prompts) */
.modal-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 16px;
    margin-bottom: 24px;
    transition: all 0.3s;
}

.modal-input:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* Modal Buttons */
.modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.modal-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    min-height: 44px;
}

.modal-btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.modal-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.modal-btn-secondary {
    background: #e5e7eb;
    color: #374151;
}

.modal-btn-secondary:hover {
    background: #d1d5db;
}

.modal-btn-danger {
    background: #ef4444;
    color: white;
}

.modal-btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

.modal-btn-success {
    background: #10b981;
    color: white;
}

.modal-btn-success:hover {
    background: #059669;
    transform: translateY(-2px);
}

/* Loading Spinner */
.modal-loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .modal-box {
        padding: 24px 18px;
        margin: 16px;
        width: calc(100% - 32px);
        max-width: 92vw;
        max-height: 85vh;
        overflow-y: auto;
        border-radius: 18px;
    }

    .modal-icon {
        font-size: 48px;
    }

    .modal-title {
        font-size: 20px;
    }

    .modal-message {
        font-size: 15px;
    }

    .modal-buttons {
        flex-direction: column;
        gap: 8px;
    }

    .modal-btn {
        width: 100%;
        text-align: center;
        min-height: 44px;
        padding: 12px 16px;
    }

    .modal-input {
        font-size: 16px;   /* prevent iOS zoom on focus */
        padding: 12px 14px;
    }
}