/* ===================================================================
   buttons.css — 大同互动全局按钮系统
   所有按钮应通过此系统的 class 使用，避免内联 style
   =================================================================== */

/* ---------- 基础按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 20px;
    border: none;
    border-radius: 40px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
    transition: all 0.18s ease;
    font-family: inherit;
}

.btn:active {
    transform: scale(0.97);
}

/* ---------- 颜色变体 ---------- */
.btn-primary {
    background: var(--color-primary);
    color: var(--text-on-primary);
    box-shadow: 0 2px 6px var(--color-primary-shadow);
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px var(--color-primary-shadow-lg);
    transform: translateY(-1px);
}

.btn-mod {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    box-shadow: 0 2px 8px rgba(99,102,241,0.25);
}
.btn-mod:hover {
    box-shadow: 0 4px 16px rgba(99,102,241,0.35);
    transform: translateY(-1px);
}

.btn-success {
    background: #16a34a;
    color: white;
    box-shadow: 0 2px 6px rgba(22,163,74,0.2);
}
.btn-success:hover {
    background: #15803d;
}

.btn-danger {
    background: #dc2626;
    color: white;
    box-shadow: 0 2px 6px rgba(220,38,38,0.2);
}
.btn-danger:hover {
    background: #b91c1c;
}

.btn-ghost {
    background: transparent;
    color: var(--btn-ghost-color);
    border: 1px solid var(--btn-ghost-border);
}
.btn-ghost:hover {
    background: var(--btn-ghost-hover-bg);
    border-color: var(--btn-ghost-hover-border);
}

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

/* ---------- 尺寸变体 ---------- */
.btn-sm {
    padding: 4px 14px;
    font-size: 0.78rem;
    gap: 4px;
}
.btn-lg {
    padding: 10px 28px;
    font-size: 0.95rem;
    gap: 8px;
}

/* ---------- 链接按钮（看起来像按钮的 <a>） ---------- */
a.btn {
    text-decoration: none;
}

/* 覆盖 core.css 的全局 button margin，内联按钮不需要上下间距 */
.btn {
    margin: 0;
}

/* ---------- 禁用状态 ---------- */
.btn:disabled,
.btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ---------- 图标按钮 ---------- */
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
}
.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
}

/* ---------- 按钮组 ---------- */
.btn-group {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}