/* =============================================================================
   OUTLINE BUTTON COMPONENT
   Brand: Deep Trust Blue (#0B3C5D) or White borders depending on surface
   Block: .outline-button
   ============================================================================= */

.outline-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    min-height: 48px;
    /* WCAG touch-safe */
    background-color: transparent;
    border-width: 2px;
    border-style: solid;
    border-radius: 8px;
    font-family: 'Inter', 'Source Sans Pro', sans-serif;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    
    /* Motion bindings */
    transition: background-color var(--motion-fast), border-color var(--motion-fast), color var(--motion-fast), transform var(--motion-fast), opacity var(--motion-fast);
    
    user-select: none;
    -webkit-user-select: none;
}

.outline-button--full-width {
    width: 100%;
}

/* Focus-visible — 2px Calm Teal outline */
.outline-button:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--focus-offset);
}

/* Disabled */
.outline-button:disabled,
.outline-button--disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Loading */
.outline-button--loading {
    cursor: wait;
    opacity: 0.85;
}

/* Base structural styles for children */
.outline-button__loading-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.outline-button__label {
    display: inline-block;
}

.outline-button__icon {
    font-size: 14px;
    line-height: 1;
    flex-shrink: 0;
    transition: transform var(--motion-fast);
}

.outline-button__icon--leading {
    margin-right: 4px;
}

.outline-button__icon--trailing {
    margin-left: 4px;
}

.outline-button:hover .outline-button__icon--trailing {
    transform: translateX(4px);
}

.outline-button:hover .outline-button__icon--leading {
    transform: translateX(-4px);
}


/* ==========================================================================
   MODIFIER: Light Surface (Default) 
   Used on Off White or pure White backgrounds.
   ========================================================================== */

.outline-button--light {
    border-color: var(--color-trust-blue);
    color: var(--color-trust-blue);
}

.outline-button--light:hover:not(:disabled):not(.outline-button--disabled) {
    background-color: var(--color-off-white);
    /* Grounded hover */
}

.outline-button--light:active:not(:disabled):not(.outline-button--disabled) {
    border-color: var(--color-calm-teal);
    color: var(--color-calm-teal);
    background-color: transparent;
    transform: scale(0.98);
}

.outline-button--light.outline-button--loading:hover {
    background-color: transparent;
    transform: none;
}


/* ==========================================================================
   MODIFIER: Dark Surface 
   Used on Deep Trust Blue backgrounds (e.g., footers or hero sections).
   ========================================================================== */

.outline-button--dark {
    border-color: var(--color-white);
    color: var(--color-white);
}

.outline-button--dark:hover:not(:disabled):not(.outline-button--disabled) {
    background-color: rgba(255, 255, 255, 0.1);
    /* Grounded hover */
}

.outline-button--dark:active:not(:disabled):not(.outline-button--disabled) {
    border-color: var(--color-calm-teal);
    color: var(--color-calm-teal);
    background-color: transparent;
    transform: scale(0.98);
}

.outline-button--dark.outline-button--loading:hover {
    background-color: transparent;
    transform: none;
}