/* Современные стили для кнопок */
/* Автор: Сергей Антропов - https://devops.org.ru */

:root {
    --btn-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --btn-primary-hover: linear-gradient(135deg, #5568d3 0%, #6a3d8f 100%);
    --btn-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --btn-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    line-height: 1.5;
    text-decoration: none;
    box-shadow: var(--btn-shadow);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--btn-shadow-hover);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--btn-shadow);
}

.btn:focus {
    outline: none;
    box-shadow: var(--btn-shadow-hover), 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Primary button */
.btn-primary {
    background: var(--btn-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
    color: #fff;
}

/* Success button */
.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #fff;
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: #fff;
}

/* Secondary button */
.btn-secondary {
    background: #6b7280;
    color: #fff;
}

.btn-secondary:hover {
    background: #4b5563;
    color: #fff;
}

/* Outline buttons */
.btn-outline-primary {
    background: transparent;
    border: 2px solid #667eea;
    color: #667eea;
}

.btn-outline-primary:hover {
    background: #667eea;
    color: #fff;
}

.btn-outline-secondary {
    background: transparent;
    border: 2px solid #6b7280;
    color: #6b7280;
}

.btn-outline-secondary:hover {
    background: #6b7280;
    color: #fff;
}

.btn-outline-light {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #fff;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    color: #fff;
}

.btn-outline-info {
    background: transparent;
    border: 2px solid #0dcaf0;
    color: #0dcaf0;
}

.btn-outline-info:hover {
    background: #0dcaf0;
    color: #fff;
    border-color: #0dcaf0;
}

.btn-outline-warning {
    background: transparent;
    border: 2px solid #ffc107;
    color: #ffc107;
}

.btn-outline-warning:hover {
    background: #ffc107;
    color: #000;
    border-color: #ffc107;
}

.btn-outline-success {
    background: transparent;
    border: 2px solid #10b981;
    color: #10b981;
}

.btn-outline-success:hover {
    background: #10b981;
    color: #fff;
    border-color: #10b981;
}

/* Светлосерый border для кнопок ZFS и LVM */
.btn-outline-success[hx-post*="/sync/storages"],
.btn-outline-warning[hx-post*="/sync/lvm"] {
    border-color: #d3d3d3;
}

.btn-outline-success[hx-post*="/sync/storages"]:hover,
.btn-outline-warning[hx-post*="/sync/lvm"]:hover {
    border-color: #d3d3d3;
}

/* Danger button */
.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: #fff;
}

/* Small buttons */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
}

/* Large buttons */
.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: 0.625rem;
}

/* Disabled state */
.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled:hover,
.btn.disabled:hover {
    transform: none;
    box-shadow: var(--btn-shadow);
}

/* Logout button */
.btn-logout {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #fff;
    padding: 0.5rem 1rem;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    color: #fff;
}

/* Icon spacing in buttons */
.btn span {
    display: inline-block;
    transition: var(--transition);
}

.btn:hover span {
    transform: scale(1.1);
}

/* Button groups */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
}

/* Loading state */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid currentColor;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .btn-sm {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
}