/* ==============================================
   BUTTONS - Унифицированные кнопки
   ============================================== */

/* Base Button */
.modern-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--duration-300) var(--ease-out);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    line-height: 1;
}

.modern-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--duration-500) ease;
}

.modern-btn:hover::before {
    left: 100%;
}

.modern-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.modern-btn:disabled:hover {
    transform: none !important;
}

/* Button Variants */
.modern-btn-primary {
    background: linear-gradient(135deg, var(--app-primary), var(--app-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.modern-btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
}

.modern-btn-secondary {
    background: var(--background-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.modern-btn-secondary:hover:not(:disabled) {
    background: var(--background-quaternary);
    border-color: var(--app-primary);
}

.modern-btn-success {
    background: linear-gradient(135deg, var(--app-success), #30D158);
    color: white;
    box-shadow: 0 4px 12px rgba(52, 199, 89, 0.3);
}

.modern-btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 199, 89, 0.4);
}

.modern-btn-danger {
    background: linear-gradient(135deg, var(--app-danger), #FF453A);
    color: white;
    box-shadow: 0 4px 12px rgba(255, 59, 48, 0.3);
}

.modern-btn-danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 59, 48, 0.4);
}

.modern-btn-warning {
    background: linear-gradient(135deg, var(--app-warning), #FF9F0A);
    color: white;
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.3);
}

.modern-btn-warning:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 149, 0, 0.4);
}

/* Button Sizes */
.modern-btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
}

.modern-btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-lg);
}

.modern-btn-xl {
    padding: var(--space-5) var(--space-8);
    font-size: var(--font-size-xl);
}

/* Legacy Compatibility - для совместимости со старым кодом */
.btn-primary {
    background: linear-gradient(135deg, var(--app-primary), var(--app-secondary));
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--duration-200) ease;
    min-width: 80px;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.4);
}

.btn-primary:disabled {
    background: var(--background-quaternary) !important;
    color: var(--text-muted) !important;
    cursor: not-allowed !important;
    transform: none !important;
    box-shadow: none !important;
    opacity: 0.6 !important;
}

.btn-secondary {
    background: var(--background-quaternary);
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--duration-200) ease;
    min-width: 80px;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--background-tertiary);
    color: var(--text-primary);
}

/* Template Button */
.templates-btn,
.modern-templates-btn {
    background: linear-gradient(135deg, var(--app-primary), var(--app-secondary)) !important;
    color: white !important;
    border: none !important;
    padding: var(--space-2) var(--space-3) !important;
    border-radius: var(--radius-lg) !important;
    font-size: var(--font-size-sm) !important;
    font-weight: var(--font-weight-medium) !important;
    cursor: pointer !important;
    transition: all var(--duration-300) ease !important;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3) !important;
    flex-shrink: 0 !important;
    display: flex !important;
    align-items: center !important;
    gap: var(--space-2) !important;
}

.templates-btn:hover,
.modern-templates-btn:hover {
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.4) !important;
}

/* Action Buttons */
.modern-list-action {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-lg);
    background: var(--background-quaternary);
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-300) ease;
}

.modern-list-action:hover {
    background: var(--app-primary);
    color: white;
}

/* CDB Compatibility - для client-database модуля */
.modern-btn-primary.cdb-override {
    opacity: 1 !important;
    pointer-events: all !important;
    background: var(--app-primary) !important;
    color: white !important;
    border: 1px solid var(--border-secondary) !important;
    border-radius: var(--radius-lg) !important;
    padding: var(--space-3) var(--space-4) !important;
    font-size: var(--font-size-sm) !important;
    font-weight: var(--font-weight-medium) !important;
    cursor: pointer !important;
    transition: all var(--duration-200) ease !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: var(--space-2) !important;
}

.modern-btn-primary.cdb-override:hover:not(:disabled) {
    background: #0056b3 !important;
    transform: translateY(-1px) !important;
    box-shadow: var(--shadow-md) !important;
}

.modern-btn-primary.cdb-override:disabled {
    opacity: 0.6 !important;
    pointer-events: none !important;
    cursor: not-allowed !important;
    background: var(--background-quaternary) !important;
    color: var(--text-muted) !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .modern-btn {
        width: 100%;
        justify-content: center;
    }
    
    .modern-btn-sm {
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-xs);
    }
}