/* ───────────────────────────────────────────────────────────────
   BUTTON COMPONENTS — premium refresh, theme-aware
   ─────────────────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
}

/* Buttons rendered as <a> must never pick up the global link hover
   (gold text + underline) — that made e.g. gold-on-gold unreadable. */
a.btn,
a.btn:hover {
    text-decoration: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* Primary Button — champagne gold */
.btn-primary {
    background: linear-gradient(180deg, var(--color-accent-orange), var(--color-accent-orange-hover));
    color: var(--color-primary-dark);
    border-color: var(--color-accent-orange-hover);
    box-shadow: var(--shadow-xs);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(180deg, #ECB856, var(--color-accent-orange));
    color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Success Button */
.btn-success {
    background: linear-gradient(180deg, var(--color-accent-green), var(--color-accent-green-hover));
    color: #ffffff;
    border-color: var(--color-accent-green-hover);
    box-shadow: var(--shadow-xs);
}

.btn-success:hover:not(:disabled) {
    background: linear-gradient(180deg, #47B575, var(--color-accent-green));
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Danger Button */
.btn-danger {
    background: linear-gradient(180deg, var(--color-accent-red), var(--color-accent-red-hover));
    color: #ffffff;
    border-color: var(--color-accent-red-hover);
    box-shadow: var(--shadow-xs);
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(180deg, #D95E5E, var(--color-accent-red));
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Secondary Button — quiet, neutral */
.btn-secondary {
    background: var(--surface-raised);
    color: var(--text-body);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--accent-gold-soft);
    color: var(--text-strong);
    border-color: var(--border-gold);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Outline Variants */
.btn-outline-primary {
    background: transparent;
    color: var(--color-accent-orange-hover);
    border-color: var(--border-gold);
}

html[data-theme="dark"] .btn-outline-primary {
    color: var(--color-accent-orange);
}

.btn-outline-primary:hover:not(:disabled) {
    background: var(--color-accent-orange);
    color: var(--color-primary-dark);
    border-color: var(--color-accent-orange);
}

.btn-outline-secondary {
    background: transparent;
    color: var(--text-body);
    border-color: var(--border-strong);
}

.btn-outline-secondary:hover:not(:disabled) {
    background: var(--accent-gold-soft);
    color: var(--text-strong);
    border-color: var(--border-gold);
    transform: translateY(-1px);
    box-shadow: var(--shadow-xs);
}

.btn-outline-danger {
    background: transparent;
    color: var(--tint-danger-text);
    border-color: var(--color-accent-red);
}

.btn-outline-danger:hover:not(:disabled) {
    background: var(--color-accent-red);
    color: #ffffff;
}

/* Button Sizes */
.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.7rem 1.5rem;
    font-size: 1rem;
}

/* Button Groups */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
}

.btn-group-sm .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}