/**
 * 葫芦生《赵籁》通用样式 v2.0
 * 基于统一设计系统的全局样式定义
 */

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-primary);
    line-height: var(--line-height-relaxed);
    color: var(--color-accent-ink);
    background: var(--color-neutral-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ==================== 全局链接样式 ==================== */
a {
    color: var(--color-primary-gold);
    text-decoration: none;
    transition: all var(--duration-fast) var(--easing-standard);
}

a:hover {
    color: var(--color-primary-bronze);
}

a:focus {
    outline: 2px solid var(--color-primary-gold);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ==================== 标题样式 ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--color-primary-bronze);
    margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

/* ==================== 段落样式 ==================== */
p {
    margin-bottom: var(--space-md);
    color: var(--color-neutral-700);
    line-height: var(--line-height-relaxed);
}

.lead {
    font-size: var(--font-size-lg);
    font-weight: 400;
    color: var(--color-neutral-600);
    line-height: var(--line-height-relaxed);
}

/* ==================== 按钮系统 ==================== */
.btn-base {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--duration-normal) var(--easing-standard);
    user-select: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-base:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* 主要按钮 */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-gold), #F4E04D);
    color: var(--color-neutral-900);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #F4E04D, var(--color-primary-gold));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-neutral-900);
}

/* 次要按钮 */
.btn-secondary {
    background: linear-gradient(135deg, var(--color-primary-bronze), #A0522D);
    color: var(--color-neutral-50);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover:not(:disabled) {
    background: linear-gradient(135deg, #A0522D, var(--color-primary-bronze));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-neutral-50);
}

/* 轮廓按钮 */
.btn-outline {
    background: rgba(212, 175, 55, 0.1);
    color: var(--color-primary-gold);
    border: 2px solid var(--color-primary-gold);
    box-shadow: var(--shadow-sm);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary-gold);
    color: var(--color-neutral-900);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 幽灵按钮 */
.btn-ghost {
    background: transparent;
    color: var(--color-primary-gold);
    border: 1px solid var(--color-primary-gold);
}

.btn-ghost:hover:not(:disabled) {
    background: rgba(212, 175, 55, 0.1);
    color: var(--color-primary-gold);
}

/* 按钮尺寸 */
.btn-sm {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

/* ==================== 卡片系统 ==================== */
.card-base {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--duration-normal) var(--easing-standard);
    overflow: hidden;
}

.card-base:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    padding: var(--space-xl);
    border-bottom: 1px solid var(--color-neutral-200);
    background: linear-gradient(135deg, 
        rgba(212, 175, 55, 0.05), 
        rgba(139, 69, 19, 0.03));
}

.card-body {
    padding: var(--space-xl);
}

.card-footer {
    padding: var(--space-xl);
    border-top: 1px solid var(--color-neutral-200);
    background: var(--color-neutral-50);
}

/* ==================== 表单系统 ==================== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--color-neutral-700);
    font-size: var(--font-size-sm);
}

.form-control {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--color-neutral-300);
    border-radius: var(--radius-lg);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    background: var(--color-neutral-50);
    transition: all var(--duration-normal) var(--easing-standard);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
    background: white;
}

.form-control:invalid {
    border-color: var(--color-accent-cinnabar);
}

/* ==================== 导航系统 ==================== */
.navbar-brand {
    font-family: var(--font-family-display);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary-gold) !important;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-link {
    color: var(--color-neutral-300) !important;
    font-weight: 500;
    transition: all var(--duration-fast) var(--easing-standard);
    position: relative;
}

.nav-link:hover {
    color: var(--color-primary-gold) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary-gold);
    transition: all var(--duration-normal) var(--easing-decelerate);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* ==================== 工具类样式 ==================== */
/* 间距工具类 */
.m-0 { margin: 0 !important; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.ml-0 { margin-left: 0 !important; }
.mr-0 { margin-right: 0 !important; }

.p-0 { padding: 0 !important; }
.pt-0 { padding-top: 0 !important; }
.pb-0 { padding-bottom: 0 !important; }
.pl-0 { padding-left: 0 !important; }
.pr-0 { padding-right: 0 !important; }

/* 文本工具类 */
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

.text-primary { color: var(--color-primary-gold) !important; }
.text-secondary { color: var(--color-primary-bronze) !important; }
.text-success { color: var(--color-accent-jade) !important; }
.text-danger { color: var(--color-accent-cinnabar) !important; }
.text-muted { color: var(--color-neutral-500) !important; }

/* 显示工具类 */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

/* Flexbox工具类 */
.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.align-items-center { align-items: center !important; }
.flex-grow-1 { flex-grow: 1 !important; }

/* ==================== 加载动画 ==================== */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-neutral-300);
    border-radius: 50%;
    border-top-color: var(--color-primary-gold);
    animation: spin 1s ease-in-out infinite;
}

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

.loading-dots::after {
    content: '';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* ==================== 动画效果 ==================== */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

.scale-in {
    animation: scaleIn 0.6s ease-out;
}

.float {
    animation: float 3s ease-in-out infinite;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes scaleIn {
    from { 
        opacity: 0; 
        transform: scale(0.9); 
    }
    to { 
        opacity: 1; 
        transform: scale(1); 
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

/* ==================== 响应式断点 ==================== */
@media (max-width: 576px) {
    .container {
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }
    
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }
    h3 { font-size: var(--font-size-2xl); }
    
    .btn-base {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 768px) {
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--space-lg);
    }
}

/* ==================== 无障碍支持 ==================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .navbar,
    .footer,
    .btn-base,
    .modal-overlay {
        display: none !important;
    }
    
    body {
        color: black !important;
        background: white !important;
    }
    
    .card-base {
        border: 1px solid black !important;
        box-shadow: none !important;
    }
}