/* ==================== UNIFIED BUTTON SYSTEM ==================== */
/* The MN Studio — Button Styles */
/* Version: 1.0 */

/* ==================== VARIABLES ==================== */
:root {
    /* Button Colors */
    --btn-primary-bg: var(--gold, #C9A961);
    --btn-primary-text: var(--black, #0A0A0A);
    --btn-primary-hover-bg: transparent;
    --btn-primary-hover-text: var(--gold, #C9A961);

    --btn-secondary-bg: transparent;
    --btn-secondary-text: var(--black, #0A0A0A);
    --btn-secondary-border: var(--gray-light, #E5E5E5);
    --btn-secondary-hover-border: var(--gold, #C9A961);
    --btn-secondary-hover-text: var(--gold, #C9A961);

    --btn-ghost-bg: transparent;
    --btn-ghost-text: var(--gold, #C9A961);
    --btn-ghost-border: var(--gold, #C9A961);
    --btn-ghost-hover-bg: var(--gold, #C9A961);
    --btn-ghost-hover-text: var(--white, #FFFFFF);

    --btn-danger-bg: #dc3545;
    --btn-danger-text: #FFFFFF;
    --btn-danger-hover-bg: #c82333;

    --btn-link-text: var(--gold, #C9A961);
    --btn-link-hover-text: var(--gold-dark, #B8954A);

    /* Button Sizing */
    --btn-padding-sm: 0.5rem 1rem;
    --btn-padding-md: 0.75rem 1.5rem;
    --btn-padding-lg: 1rem 2.5rem;
    --btn-padding-xl: 1.25rem 3.5rem;

    /* Button Typography */
    --btn-font-size-sm: 0.75rem;
    --btn-font-size-md: 0.875rem;
    --btn-font-size-lg: 0.875rem;
    --btn-font-weight: 600;
    --btn-letter-spacing: 0.05em;

    /* Button Misc */
    --btn-border-width: 1px;
    --btn-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== BASE BUTTON ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: var(--btn-padding-md);
    font-family: var(--font-sans, 'Montserrat', -apple-system, sans-serif);
    font-size: var(--btn-font-size-md);
    font-weight: var(--btn-font-weight);
    letter-spacing: var(--btn-letter-spacing);
    text-transform: uppercase;
    text-decoration: none;
    line-height: 1.2;
    border: var(--btn-border-width) solid transparent;
    border-radius: 0;
    cursor: pointer;
    transition: var(--btn-transition);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.25);
}

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

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

/* Primary — Gold filled */
.btn--primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border-color: var(--btn-primary-bg);
}

.btn--primary:hover {
    background: var(--btn-primary-hover-bg);
    color: var(--btn-primary-hover-text);
    border-color: var(--btn-primary-bg);
}

/* Secondary — Transparent with gray border */
.btn--secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border-color: var(--btn-secondary-border);
}

.btn--secondary:hover {
    border-color: var(--btn-secondary-hover-border);
    color: var(--btn-secondary-hover-text);
}

/* Ghost — Gold border, transparent bg */
.btn--ghost {
    background: var(--btn-ghost-bg);
    color: var(--btn-ghost-text);
    border-color: var(--btn-ghost-border);
}

.btn--ghost:hover {
    background: var(--btn-ghost-hover-bg);
    color: var(--btn-ghost-hover-text);
}

/* Danger — Red */
.btn--danger {
    background: var(--btn-danger-bg);
    color: var(--btn-danger-text);
    border-color: var(--btn-danger-bg);
}

.btn--danger:hover {
    background: var(--btn-danger-hover-bg);
    border-color: var(--btn-danger-hover-bg);
}

/* Link — Text only */
.btn--link {
    background: transparent;
    color: var(--btn-link-text);
    border: none;
    padding: 0.25rem 0.5rem;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.btn--link:hover {
    color: var(--btn-link-hover-text);
}

.btn--link:focus {
    box-shadow: none;
}

/* Muted link variant */
.btn--link.btn--muted {
    color: var(--gray, #6B6B6B);
}

.btn--link.btn--muted:hover {
    color: var(--black, #0A0A0A);
}

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

.btn--sm {
    padding: var(--btn-padding-sm);
    font-size: var(--btn-font-size-sm);
}

.btn--lg {
    padding: var(--btn-padding-lg);
}

.btn--xl {
    padding: var(--btn-padding-xl);
}

/* ==================== MODIFIERS ==================== */

/* Full width */
.btn--full {
    width: 100%;
}

/* Icon button — square */
.btn--icon {
    width: 44px;
    height: 44px;
    padding: 0;
    flex-shrink: 0;
}

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

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

/* Round icon button */
.btn--icon-round {
    border-radius: 50%;
}

/* 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-spin 0.6s linear infinite;
}

.btn--primary.btn--loading::after {
    border-color: var(--btn-primary-text);
    border-right-color: transparent;
}

.btn--secondary.btn--loading::after,
.btn--ghost.btn--loading::after {
    border-color: var(--gold, #C9A961);
    border-right-color: transparent;
}

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

/* ==================== SPECIAL BUTTONS ==================== */

/* Filter buttons (admin) */
.btn--filter {
    background: transparent;
    color: var(--gray, #6B6B6B);
    border-color: var(--gray-light, #E5E5E5);
    padding: var(--btn-padding-sm);
    font-size: var(--btn-font-size-sm);
}

.btn--filter:hover,
.btn--filter.active {
    background: var(--gold, #C9A961);
    color: var(--white, #FFFFFF);
    border-color: var(--gold, #C9A961);
}

/* Tab-style buttons (composer tabs) */
.btn--tab {
    background: transparent;
    color: var(--gray, #6B6B6B);
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: 0.75rem 1rem;
}

.btn--tab:hover {
    color: var(--black, #0A0A0A);
}

.btn--tab.active {
    color: var(--gold, #C9A961);
    border-bottom-color: var(--gold, #C9A961);
}

.btn--tab:focus {
    box-shadow: none;
}

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

.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-group--center {
    justify-content: center;
}

.btn-group--right {
    justify-content: flex-end;
}

.btn-group--stack {
    flex-direction: column;
}

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

@media (max-width: 768px) {
    .btn--xl {
        padding: var(--btn-padding-lg);
    }

    .btn--lg {
        padding: var(--btn-padding-md);
    }

    /* Stack buttons on mobile if needed */
    .btn-group--mobile-stack {
        flex-direction: column;
    }

    .btn-group--mobile-stack .btn {
        width: 100%;
    }
}

/* ==================== DARK CONTEXT ==================== */
/* For buttons on dark backgrounds */

.btn--on-dark.btn--primary:hover {
    background: transparent;
    color: var(--white, #FFFFFF);
    border-color: var(--white, #FFFFFF);
}

.btn--on-dark.btn--ghost {
    color: var(--white, #FFFFFF);
    border-color: var(--white, #FFFFFF);
}

.btn--on-dark.btn--ghost:hover {
    background: var(--white, #FFFFFF);
    color: var(--black, #0A0A0A);
}

/* ==================== DECISION BUTTON ==================== */
/* Homepage DECISION button with double border: white inner + gold outer */

.btn--decision {
    position: relative;
    border: 1px solid #fff !important;
    box-shadow: 0 0 0 1px #C9A961;
}

.btn--decision:hover {
    border-color: #fff !important;
    box-shadow: 0 0 0 1px #C9A961;
}

/* ==================== LEGACY COMPATIBILITY ==================== */
/* Temporary — remove after full migration */

/* Map old classes to new system */
.btn.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border-color: var(--btn-primary-bg);
}

.btn.btn-primary:hover {
    background: var(--btn-primary-hover-bg);
    color: var(--btn-primary-hover-text);
    border-color: var(--btn-primary-bg);
}

.btn-full {
    width: 100%;
}