/* ===== Enhanced Buttons CSS ===== */

/* Modern Button Styles */
.modern-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.modern-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.modern-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
    color: white;
    text-decoration: none;
}

.modern-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

/* Button Variants */
.modern-btn-primary {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

.modern-btn-primary:hover {
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.4);
}

.modern-btn-success {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.modern-btn-success:hover {
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
}

.modern-btn-warning {
    background: linear-gradient(135deg, #FF9800, #F57C00);
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
}

.modern-btn-warning:hover {
    box-shadow: 0 8px 25px rgba(255, 152, 0, 0.4);
}

.modern-btn-danger {
    background: linear-gradient(135deg, #F44336, #D32F2F);
    box-shadow: 0 4px 15px rgba(244, 67, 54, 0.3);
}

.modern-btn-danger:hover {
    box-shadow: 0 8px 25px rgba(244, 67, 54, 0.4);
}

.modern-btn-secondary {
    background: linear-gradient(135deg, #6c757d, #5a6268);
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.modern-btn-secondary:hover {
    box-shadow: 0 8px 25px rgba(108, 117, 125, 0.4);
}

/* Small Buttons */
.modern-btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    gap: 6px;
}

/* Large Buttons */
.modern-btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    gap: 10px;
}

/* Icon Only Buttons */
.modern-btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modern-btn-icon.modern-btn-sm {
    width: 32px;
    height: 32px;
}

.modern-btn-icon.modern-btn-lg {
    width: 48px;
    height: 48px;
}

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

.modern-btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Disabled State */
.modern-btn:disabled,
.modern-btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button Groups */
.modern-btn-group {
    display: inline-flex;
    gap: 8px;
}

.modern-btn-group .modern-btn {
    border-radius: 8px;
}

.modern-btn-group .modern-btn:first-child {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.modern-btn-group .modern-btn:last-child {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.modern-btn-group .modern-btn:not(:first-child):not(:last-child) {
    border-radius: 0;
}

/* Responsive Buttons */
@media (max-width: 768px) {
    .modern-btn {
        padding: 8px 16px;
        font-size: 13px;
        gap: 6px;
    }

    .modern-btn-sm {
        padding: 5px 10px;
        font-size: 11px;
        gap: 4px;
    }

    .modern-btn-lg {
        padding: 12px 24px;
        font-size: 15px;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .modern-btn {
        padding: 6px 12px;
        font-size: 12px;
        gap: 4px;
    }

    .modern-btn-icon {
        width: 36px;
        height: 36px;
    }

    .modern-btn-icon.modern-btn-sm {
        width: 28px;
        height: 28px;
    }

    .modern-btn-icon.modern-btn-lg {
        width: 44px;
        height: 44px;
    }
}

/* Floating Action Button */
.modern-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    border: none;
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.modern-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.5);
}

/* Button with Badge */
.modern-btn-with-badge {
    position: relative;
}

.modern-btn-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #F44336;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Animated Buttons */
.modern-btn-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    }
    50% {
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.6);
    }
    100% {
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    }
}

/* Gradient Buttons */
.modern-btn-gradient {
    background: linear-gradient(45deg, #4CAF50, #2196F3, #FF9800, #F44336);
    background-size: 300% 300%;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Glass Effect Buttons */
.modern-btn-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
}

.modern-btn-glass:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}