/* ============================================
   CloudSaver AI - Unified Button System
   Professional, consistent button styling
   ============================================ */

/* Base Button Styles */
.btn-primary,
.btn-secondary,
.btn-success,
.btn-danger,
.btn-warning,
.btn-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
}

/* Primary Button (Main Actions) */
.btn-primary {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.btn-primary:hover:not(:disabled) {
    background: #5568d3;
    border-color: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* Secondary Button (Alternative Actions) */
.btn-secondary {
    background: #6b7280;
    color: white;
    border-color: #6b7280;
}

.btn-secondary:hover:not(:disabled) {
    background: #4b5563;
    border-color: #4b5563;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
}

/* Success Button (Positive Actions) */
.btn-success {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
    border-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Danger Button (Destructive Actions) */
.btn-danger {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    border-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Warning Button */
.btn-warning {
    background: #f59e0b;
    color: white;
    border-color: #f59e0b;
}

.btn-warning:hover:not(:disabled) {
    background: #d97706;
    border-color: #d97706;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

/* Info Button */
.btn-info {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.btn-info:hover:not(:disabled) {
    background: #2563eb;
    border-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Button Width */
.btn-block {
    width: 100%;
}

/* Button States */
button:disabled,
.btn-primary:disabled,
.btn-secondary:disabled,
.btn-success:disabled,
.btn-danger:disabled,
.btn-warning:disabled,
.btn-info:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Loading State */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

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

@keyframes button-loading-spinner {
    to {
        transform: rotate(360deg);
    }
}

/* Outline Variants (Ghost Buttons) */
.btn-primary.btn-outline {
    background: transparent;
    color: #667eea;
    border-color: #667eea;
}

.btn-primary.btn-outline:hover:not(:disabled) {
    background: #667eea;
    color: white;
}

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

.btn-secondary.btn-outline:hover:not(:disabled) {
    background: #6b7280;
    color: white;
}

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

.btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Icon Buttons */
.btn-icon {
    padding: 0.75rem;
    aspect-ratio: 1;
}

.btn-icon.btn-sm {
    padding: 0.5rem;
}

.btn-icon.btn-lg {
    padding: 1rem;
}