/**
 * T2W Button Components — UX-BLUEPRINT §5.2
 * 4 variants: primary, secondary, ghost, icon
 * 2 sizes: sm, lg (default is md)
 */

/* ========================================
   Base
   ======================================== */
.t2w-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    font-family: var(--font-primary, 'Pretendard', sans-serif);
    transition: background 150ms ease-out, transform 150ms ease-out, box-shadow 150ms ease-out;
}

.t2w-btn:disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* ========================================
   Primary — Gold CTA
   ======================================== */
.t2w-btn-primary {
    background: var(--color-primary, #FFB700);
    color: var(--color-white, #fff);
    border-radius: var(--radius-full, 9999px);
    padding: 10px 24px;
    font-weight: var(--font-semibold, 600);
    font-size: var(--text-sm, 0.875rem);
    box-shadow: 0 2px 8px rgba(255,183,0,0.2);
}

.t2w-btn-primary:hover {
    background: var(--color-primary-dark, #E5A400);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(255,183,0,0.3);
}

.t2w-btn-primary:active {
    transform: translateY(0);
}

/* ========================================
   Secondary — Outline
   ======================================== */
.t2w-btn-secondary {
    background: transparent;
    color: var(--color-text-primary, #1F2937);
    border: 1px solid var(--color-border-medium, #D1D5DB);
    border-radius: var(--radius-full, 9999px);
    padding: 10px 24px;
    font-weight: var(--font-semibold, 600);
    font-size: var(--text-sm, 0.875rem);
}

.t2w-btn-secondary:hover {
    border-color: var(--color-primary, #FFB700);
    color: var(--color-primary, #FFB700);
    background: rgba(255,183,0,0.05);
}

/* ========================================
   Ghost — Text only
   ======================================== */
.t2w-btn-ghost {
    background: transparent;
    color: var(--color-primary, #FFB700);
    border: none;
    padding: 8px 16px;
    font-weight: var(--font-semibold, 600);
    font-size: var(--text-sm, 0.875rem);
    border-radius: var(--radius-md, 8px);
}

.t2w-btn-ghost:hover {
    background: rgba(255,183,0,0.08);
}

/* ========================================
   Icon — Circle
   ======================================== */
.t2w-btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-white, #fff);
    border: 1px solid var(--color-border-light, #E5E7EB);
    color: var(--color-text-muted, #6B7280);
    padding: 0;
    box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.05));
}

.t2w-btn-icon:hover {
    background: var(--color-bg-gray, #F3F4F6);
    color: var(--color-text-primary, #1F2937);
    transform: scale(1.08);
}

/* ========================================
   Sizes
   ======================================== */
.t2w-btn--sm {
    padding: 6px 16px;
    font-size: var(--text-xs, 0.75rem);
    gap: 6px;
}

.t2w-btn--lg {
    padding: 14px 32px;
    font-size: var(--text-base, 1rem);
    gap: 10px;
}

.t2w-btn-icon.t2w-btn--sm {
    width: 36px;
    height: 36px;
}

.t2w-btn-icon.t2w-btn--lg {
    width: 52px;
    height: 52px;
}