/*
===============================================================================
RENT ASSISTENZ - BUTTON SYSTEM
===============================================================================
Complete button styling system - consolidated from style.css
Corporate design with senior-friendly UX
Version: 1.0.0 - Clean Migration
===============================================================================
*/

/* ===== BASE BUTTON STYLING ===== */

.site-button {
    position: relative !important;
    overflow: hidden !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: var(--space-md) var(--space-xl) !important;
    font-size: var(--font-size-base) !important;
    font-weight: 600 !important;
    text-decoration: none;
    border-radius: var(--radius-md) !important;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    min-height: 44px !important; /* Senior-friendly touch target */
    gap: var(--space-sm) !important;
    
    /* Performance optimizations */
    will-change: transform;
    backface-visibility: hidden;
}

/* ===== BUTTON RIPPLE EFFECT ===== */

.site-button::before {
    content: '' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    width: 0 !important;
    height: 0 !important;
    border-radius: 50% !important;
    background: var(--rent-overlay-light) !important;
    transform: translate(-50%, -50%) !important;
    transition: width 0.3s ease, height 0.3s ease !important;
    z-index: var(--z-ground) !important;
    opacity: 0 !important;
}

.site-button:active::before {
    width: 300px !important;
    height: 300px !important;
    opacity: 1 !important;
}

/* ===== FOOTER BUTTONS ===== */

.site-footer .site-button {
    background-color: var(--rent-deep-blue) !important;
    color: var(--rent-bg-white) !important;
    border-color: transparent !important;
    padding: var(--space-sm) var(--space-md) !important;
    font-size: var(--font-size-sm) !important;
    min-height: 40px !important;
}

.site-footer .site-button:hover {
    background-color: var(--rent-bg-white) !important;
    color: var(--rent-deep-blue) !important;
    border-color: var(--rent-deep-blue) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.site-footer .site-button i {
    transition: color 0.3s ease !important;
    font-size: var(--font-size-base) !important;
}

/* ===== BUTTON VARIANTS ===== */

/* Primary Button */
.site-button.btn-primary {
    background: var(--rent-primary-blue) !important;
    color: var(--rent-bg-white) !important;
    border-color: var(--rent-primary-blue) !important;
}

.site-button.btn-primary:hover {
    background: var(--rent-secondary-blue) !important;
    border-color: var(--rent-secondary-blue) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Secondary Button */
.site-button.btn-secondary {
    background: transparent;
    color: var(--rent-primary-blue) !important;
    border-color: var(--rent-primary-blue) !important;
}

.site-button.btn-secondary:hover {
    background: var(--rent-primary-blue) !important;
    color: var(--rent-bg-white) !important;
    border-color: var(--rent-primary-blue) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Success Button */
.site-button.btn-success {
    background: var(--rent-success-green) !important;
    color: var(--rent-bg-white) !important;
    border-color: var(--rent-success-green) !important;
}

.site-button.btn-success:hover {
    background: var(--rent-light-green) !important;
    border-color: var(--rent-light-green) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== BUTTON SIZES ===== */

/* Small Button */
.site-button.btn-sm {
    padding: var(--space-sm) var(--space-lg) !important;
    font-size: var(--font-size-sm) !important;
    min-height: 36px !important;
}

/* Large Button */
.site-button.btn-lg {
    padding: var(--space-lg) var(--space-2xl) !important;
    font-size: var(--font-size-lg) !important;
    min-height: 52px !important;
    font-weight: 700 !important;
}

/* ===== BUTTON STATES ===== */

/* Disabled Button */
.site-button:disabled,
.site-button.disabled {
    background: var(--rent-border-medium) !important;
    color: var(--rent-text-light) !important;
    border-color: var(--rent-border-medium) !important;
    cursor: not-allowed;
    opacity: 0.6 !important;
}

.site-button:disabled:hover,
.site-button.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Loading Button */
.site-button.loading {
    cursor: wait;
    opacity: 0.8 !important;
}

.site-button.loading::after {
    content: '' !important;
    width: 16px !important;
    height: 16px !important;
    border: 2px solid currentColor !important;
    border-right-color: transparent !important;
    border-radius: 50% !important;
    animation: button-spin 0.8s linear infinite;
    margin-left: var(--space-sm) !important;
}

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

/* ===== RESPONSIVE BUTTONS ===== */

/* Mobile */
@media (max-width: 768px) {
    .site-button {
        padding: var(--space-lg) var(--space-xl) !important;
        font-size: var(--font-size-lg) !important;
        min-height: 48px !important; /* Larger touch target for mobile */
    }
    
    .site-button.btn-sm {
        padding: var(--space-md) var(--space-lg) !important;
        font-size: var(--font-size-base) !important;
        min-height: 44px !important;
    }
    
    .site-button.btn-lg {
        padding: var(--space-xl) var(--space-2xl) !important;
        font-size: var(--font-size-xl) !important;
        min-height: 56px !important;
    }
    
    /* Stack buttons on mobile */
    .button-group {
        display: flex !important;
        flex-direction: column !important;
        gap: var(--space-md);
    }
    
    .button-group .site-button {
        width: 100% !important;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .site-button {
        min-height: 50px !important; /* Even larger for small screens */
    }
}

/* ===== ACCESSIBILITY FEATURES ===== */

/* Focus styles for keyboard navigation */
.site-button:focus {
    outline: 3px solid var(--rent-primary-blue) !important;
    outline-offset: 2px !important;
    z-index: var(--z-elevated) !important;
}

.site-button:focus:not(:focus-visible) {
    outline: none;
}

/* High contrast support */
@media (prefers-contrast: high) {
    .site-button {
        border-width: 3px;
        font-weight: 700 !important;
    }
    
    .site-button:focus {
        outline-width: 4px;
        outline-offset: 3px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .site-button,
    .site-button::before {
        transition: none !important;
    }
    
    .site-button:hover,
    .site-button:active {
        transform: none;
    }
    
    .site-button.loading::after {
        animation: none;
    }
}

/* ===== BUTTON GROUPS ===== */

.button-group {
    display: flex !important;
    gap: var(--space-md);
    flex-wrap: wrap !important;
    align-items: center !important;
}

.button-group .site-button {
    flex: 0 0 auto !important;
}

.button-group.centered {
    justify-content: center !important;
}

.button-group.right {
    justify-content: flex-end !important;
}

/* ===== ICON BUTTONS ===== */

.site-button i {
    font-size: 1.2em !important;
}

.site-button.icon-only {
    width: 44px !important;
    height: 44px !important;
    padding: 0 !important;
    border-radius: var(--radius-full) !important;
}

.site-button.icon-only i {
    font-size: var(--font-size-lg) !important;
}

/* ===== SPECIAL BUTTON TYPES ===== */

/* Call-to-Action Button */
.site-button.cta {
    background: linear-gradient(135deg, var(--rent-primary-blue) 0%, var(--rent-secondary-blue) 100%) !important;
    color: var(--rent-bg-white) !important;
    border: none;
    font-weight: 700 !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-lg);
}

.site-button.cta:hover {
    background: linear-gradient(135deg, var(--rent-secondary-blue) 0%, var(--rent-deep-blue) 100%) !important;
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-xl) !important;
}

/* Ghost Button */
.site-button.ghost {
    background: transparent;
    color: var(--rent-text-primary) !important;
    border: 1px solid var(--rent-border-light) !important;
    backdrop-filter: blur(10px) !important;
}

.site-button.ghost:hover {
    background: var(--rent-overlay-light) !important;
    border-color: var(--rent-border-medium) !important;
}