/**
 * Kuzmack Suites Loading Spinner Styles
 * Uses design tokens from kuzmack-variables.css
 *
 * Variants: button spinner, full-page overlay, card/section, small inline
 */

/* ========== Base Spinner ========== */

.spinner {
    display: inline-block;
    position: relative;
}

/* ========== Spinner Variants ========== */

/* Circle Spinner (Default) */
.spinner-circle {
    width: 40px;
    height: 40px;
    border: 4px solid var(--ks-neutral-100);
    border-left-color: var(--ks-navy);
    border-radius: var(--ks-radius-full);
    animation: spinner-rotate 1s linear infinite;
}

/* Dots Spinner */
.spinner-dots {
    display: inline-flex;
    gap: var(--ks-spacing-sm);
}

.spinner-dots span {
    width: var(--ks-spacing-md);
    height: var(--ks-spacing-md);
    background-color: var(--ks-navy);
    border-radius: var(--ks-radius-full);
    animation: spinner-dots 1.4s ease-in-out infinite;
}

.spinner-dots span:nth-child(1) { animation-delay: -0.32s; }
.spinner-dots span:nth-child(2) { animation-delay: -0.16s; }
.spinner-dots span:nth-child(3) { animation-delay: 0s; }

/* Pulse Spinner */
.spinner-pulse {
    width: 40px;
    height: 40px;
    background-color: var(--ks-navy);
    border-radius: var(--ks-radius-full);
    animation: spinner-pulse 1.2s ease-in-out infinite;
}

/* Bars Spinner */
.spinner-bars {
    display: inline-flex;
    gap: var(--ks-spacing-xs);
    align-items: center;
    height: 40px;
}

.spinner-bars span {
    width: var(--ks-spacing-sm);
    height: 100%;
    background-color: var(--ks-navy);
    border-radius: var(--ks-radius-sm);
    animation: spinner-bars 1.2s ease-in-out infinite;
}

.spinner-bars span:nth-child(1) { animation-delay: -0.4s; }
.spinner-bars span:nth-child(2) { animation-delay: -0.3s; }
.spinner-bars span:nth-child(3) { animation-delay: -0.2s; }
.spinner-bars span:nth-child(4) { animation-delay: -0.1s; }

/* ========== Size Variants ========== */

.spinner-sm { transform: scale(0.5); }
.spinner-md { transform: scale(0.75); }
.spinner-lg { transform: scale(1.5); }
.spinner-xl { transform: scale(2); }

/* ========== Color Variants ========== */

.spinner-primary .spinner-circle { border-left-color: var(--ks-navy); }
.spinner-primary .spinner-dots span,
.spinner-primary .spinner-pulse,
.spinner-primary .spinner-bars span { background-color: var(--ks-navy); }

.spinner-secondary .spinner-circle { border-left-color: var(--ks-brown); }
.spinner-secondary .spinner-dots span,
.spinner-secondary .spinner-pulse,
.spinner-secondary .spinner-bars span { background-color: var(--ks-brown); }

.spinner-light .spinner-circle {
    border-left-color: var(--ks-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.spinner-light .spinner-dots span,
.spinner-light .spinner-pulse,
.spinner-light .spinner-bars span { background-color: var(--ks-white); }

/* ========== Button Spinner ========== */

.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading .btn-text { visibility: hidden; }

.btn-loading .btn-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: inline-block;
}

.btn-spinner .spinner-circle {
    width: var(--ks-spacing-lg);
    height: var(--ks-spacing-lg);
    border-width: 2px;
}

/* ========== Full Page Spinner Overlay ========== */

.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(249, 250, 251, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: var(--ks-z-modal);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--ks-transition-base);
}

.spinner-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.spinner-overlay .spinner {
    margin-bottom: var(--ks-spacing-lg);
}

.spinner-overlay .spinner-message {
    font-size: var(--ks-font-size-base);
    color: var(--ks-text-primary);
    margin-top: var(--ks-spacing-md);
    font-weight: var(--ks-font-weight-medium);
}

/* Dark overlay variant */
.spinner-overlay.spinner-overlay-dark {
    background-color: rgba(15, 48, 68, 0.95);
}

.spinner-overlay.spinner-overlay-dark .spinner-message {
    color: var(--ks-cream);
}

/* ========== Card/Section Spinner ========== */

.spinner-container {
    position: relative;
    min-height: 200px;
}

.spinner-container .spinner-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(249, 250, 251, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--ks-transition-base);
}

.spinner-container.loading .spinner-wrapper {
    opacity: 1;
    pointer-events: all;
}

/* ========== Inline Spinner ========== */

.spinner-inline {
    display: inline-block;
    vertical-align: middle;
    margin: 0 var(--ks-spacing-sm);
}

/* ========== Animations ========== */

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

@keyframes spinner-dots {
    0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
    40%           { transform: scale(1); opacity: 1; }
}

@keyframes spinner-pulse {
    0%, 100% { transform: scale(0); opacity: 0; }
    50%      { transform: scale(1); opacity: 1; }
}

@keyframes spinner-bars {
    0%, 40%, 100% { transform: scaleY(0.4); }
    20%           { transform: scaleY(1); }
}

/* ========== Reduced Motion ========== */

@media (prefers-reduced-motion: reduce) {
    .spinner-circle,
    .spinner-dots span,
    .spinner-pulse,
    .spinner-bars span {
        animation-duration: 3s;
    }
}

/* ========== Dark Mode ========== */

@media (prefers-color-scheme: dark) {
    .spinner-overlay {
        background-color: rgba(31, 41, 55, 0.95);
    }

    .spinner-overlay .spinner-message {
        color: var(--ks-neutral-100);
    }

    .spinner-container .spinner-wrapper {
        background-color: rgba(31, 41, 55, 0.9);
    }
}

/* ========== Helper Classes ========== */

.spinner-center {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--ks-spacing-xl) var(--ks-spacing-lg);
}

.spinner-absolute-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner-with-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--ks-spacing-md);
}

.spinner-text {
    font-size: var(--ks-font-size-sm);
    color: var(--ks-text-secondary);
    font-weight: var(--ks-font-weight-medium);
}