/**
 * Aspire Wellness - Button Components
 */

/* ===== BASE BUTTON ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-primary);
    font-weight: var(--font-medium);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    line-height: 1;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-coral);
    outline-offset: 2px;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== BUTTON SIZES ===== */
.btn-sm {
    height: 36px;
    padding: 0 var(--space-4);
    font-size: var(--text-sm);
}

.btn-md {
    height: 44px;
    padding: 0 var(--space-6);
    font-size: var(--text-base);
}

.btn-lg {
    height: 56px;
    padding: 0 var(--space-8);
    font-size: var(--text-lg);
}

.btn-xl {
    height: 64px;
    padding: 0 var(--space-10);
    font-size: var(--text-xl);
}

/* Default to medium size */
.btn {
    height: 44px;
    padding: 0 var(--space-6);
    font-size: var(--text-base);
}

/* ===== PRIMARY BUTTON (Coral) ===== */
/* White text on dark coral for maximum contrast */
.btn-primary {
    background-color: var(--primary-coral-dark);
    color: var(--neutral-white);
    border-color: var(--primary-coral-dark);
}

.btn-primary:hover {
    background-color: var(--primary-coral-darker);
    border-color: var(--primary-coral-darker);
    color: var(--neutral-white);
}

.btn-primary:active {
    transform: translateY(1px);
}

/* Lighter variant for dark backgrounds */
.btn-primary-light {
    background-color: var(--primary-coral);
    color: var(--secondary-charcoal);
    border-color: var(--primary-coral);
}

.btn-primary-light:hover {
    background-color: var(--primary-coral-light);
    border-color: var(--primary-coral-light);
    color: var(--secondary-charcoal);
}

/* ===== SECONDARY BUTTON (Dark) ===== */
.btn-secondary {
    background-color: var(--secondary-charcoal);
    color: var(--neutral-white);
    border-color: var(--secondary-charcoal);
}

.btn-secondary:hover {
    background-color: var(--secondary-charcoal-dark);
    border-color: var(--secondary-charcoal-dark);
    color: var(--neutral-white);
}

.btn-secondary:active {
    transform: translateY(1px);
}

/* ===== OUTLINE BUTTON ===== */
.btn-outline {
    background-color: transparent;
    color: var(--secondary-charcoal);
    border-color: var(--secondary-charcoal);
}

.btn-outline:hover {
    background-color: var(--secondary-charcoal);
    color: var(--neutral-white);
}

/* ===== OUTLINE CORAL BUTTON ===== */
/* Dark coral border with white fill on hover */
.btn-outline-coral {
    background-color: transparent;
    color: var(--primary-coral-dark);
    border-color: var(--primary-coral-dark);
}

.btn-outline-coral:hover {
    background-color: var(--primary-coral-dark);
    color: var(--neutral-white);
}

/* ===== GHOST BUTTON ===== */
/* Note: Uses accessible text color for WCAG AA compliance */
.btn-ghost {
    background-color: transparent;
    color: var(--primary-coral-text);
    border-color: transparent;
}

.btn-ghost:hover {
    background-color: var(--overlay-coral);
    color: var(--primary-coral-darker);
}

/* ===== WHITE BUTTON ===== */
.btn-white {
    background-color: var(--neutral-white);
    color: var(--secondary-charcoal);
    border-color: var(--neutral-white);
}

.btn-white:hover {
    background-color: var(--neutral-gray-100);
    border-color: var(--neutral-gray-100);
    color: var(--secondary-charcoal);
}

/* ===== WHATSAPP BUTTON ===== */
.btn-whatsapp {
    background-color: var(--accent-whatsapp);
    color: var(--neutral-white);
    border-color: var(--accent-whatsapp);
}

.btn-whatsapp:hover {
    background-color: var(--accent-whatsapp-dark);
    border-color: var(--accent-whatsapp-dark);
    color: var(--neutral-white);
}

.btn-whatsapp svg,
.btn-whatsapp i {
    width: 20px;
    height: 20px;
}

/* ===== CALL BUTTON ===== */
.btn-call {
    background-color: var(--secondary-charcoal);
    color: var(--neutral-white);
    border-color: var(--secondary-charcoal);
}

.btn-call:hover {
    background-color: var(--secondary-charcoal-dark);
    border-color: var(--secondary-charcoal-dark);
    color: var(--neutral-white);
}

/* ===== BOOK NOW BUTTON ===== */
/* White text on dark coral for maximum contrast */
.btn-book {
    background-color: var(--primary-coral-dark);
    color: var(--neutral-white);
    border-color: var(--primary-coral-dark);
    font-weight: var(--font-semibold);
}

.btn-book:hover {
    background-color: var(--primary-coral-darker);
    border-color: var(--primary-coral-darker);
    color: var(--neutral-white);
    box-shadow: var(--shadow-coral);
}

/* ===== LINK BUTTON ===== */
/* Note: Uses accessible text color for WCAG AA compliance */
.btn-link {
    background-color: transparent;
    color: var(--primary-coral-text);
    border-color: transparent;
    padding: 0;
    height: auto;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.btn-link:hover {
    color: var(--primary-coral-darker);
}

/* ===== ICON BUTTON ===== */
.btn-icon {
    padding: 0;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
}

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

.btn-icon.btn-lg {
    width: 56px;
    height: 56px;
}

.btn-icon svg,
.btn-icon i {
    width: 20px;
    height: 20px;
}

/* ===== FULL WIDTH BUTTON ===== */
.btn-block {
    display: flex;
    width: 100%;
}

/* ===== BUTTON WITH ICON ===== */
.btn svg,
.btn i {
    flex-shrink: 0;
}

.btn-icon-left svg,
.btn-icon-left i {
    margin-right: var(--space-2);
}

.btn-icon-right svg,
.btn-icon-right i {
    margin-left: var(--space-2);
}

/* ===== BUTTON GROUP ===== */
.btn-group {
    display: inline-flex;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.btn-group .btn:not(:first-child) {
    margin-left: -2px;
}

/* ===== LOADING STATE ===== */
.btn-loading {
    position: relative;
    color: transparent !important;
    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-right-color: transparent;
    animation: btn-spinner 0.75s linear infinite;
}

.btn-loading.btn-primary::after,
.btn-loading.btn-book::after {
    border-color: var(--neutral-white);
    border-right-color: transparent;
}

.btn-loading.btn-secondary::after,
.btn-loading.btn-whatsapp::after {
    border-color: var(--neutral-white);
    border-right-color: transparent;
}

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

/* ===== FLOATING ACTION BUTTON ===== */
.fab {
    position: fixed;
    z-index: var(--z-fixed);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
}

.fab-whatsapp {
    bottom: var(--space-6);
    right: var(--space-6);
    width: 60px;
    height: 60px;
    background-color: var(--accent-whatsapp);
    color: var(--neutral-white);
}

.fab-whatsapp:hover {
    background-color: var(--accent-whatsapp-dark);
    transform: scale(1.1);
}

.fab-whatsapp svg {
    width: 32px;
    height: 32px;
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background-color: var(--secondary-charcoal);
    color: var(--neutral-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background-color: var(--primary-coral-dark);
    color: var(--neutral-white);
    transform: translateY(-4px);
}

/* When WhatsApp FAB is present, move scroll-to-top up */
.has-whatsapp-fab .scroll-to-top {
    bottom: calc(var(--space-6) + 70px);
}