/* ============================================
   贵州思南兴黔船业 - 全局样式（江河远航主题）
   ============================================ */

@import url('variables.css');

/* ========== 基础重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: linear-gradient(180deg, rgba(0, 10, 60, 0.08) 0%, rgba(240, 248, 255, 1) 40%, rgba(240, 248, 255, 1) 100%);
    min-height: 100vh;
}

/* ========== 排版与文本 ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

h1,
.headline-xl {
    font-size: var(--font-size-h1);
}

h2,
.headline-lg {
    font-size: var(--font-size-h2);
}

h3,
.headline-md {
    font-size: var(--font-size-h3);
}

h4 {
    font-size: var(--font-size-h4);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary-light);
}

.text-muted {
    color: var(--color-text-muted);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-accent), #FF6B6B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.eyebrow {
    font-size: var(--font-size-sm);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

/* ========== 容器与网格 ========== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-narrow {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

.grid {
    display: grid;
    gap: var(--grid-gap);
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: minmax(0, 1fr);
    }
}

/* ========== 卡片与面板 ========== */
.card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(228, 236, 255, 0.9));
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.2);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-floating);
}

.glass-card {
    background: rgba(0, 12, 57, 0.55);
    color: var(--color-text-on-primary);
    backdrop-filter: blur(18px);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

.metric-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.metric-card .metric-value {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
}

.metric-card .metric-label {
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 14px;
    border-radius: var(--border-radius-full);
    background: rgba(0, 12, 57, 0.08);
    color: var(--color-secondary);
    font-size: var(--font-size-sm);
}

.badge-accent {
    background: rgba(220, 20, 60, 0.12);
    color: var(--color-accent);
}

/* ========== 按钮系统 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    cursor: pointer;
    border: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.18);
    pointer-events: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary-light) 100%);
    color: var(--color-text-on-primary);
    box-shadow: 0 14px 30px rgba(0, 12, 57, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: linear-gradient(135deg, rgba(240, 248, 255, 0.95), rgba(194, 208, 236, 0.85));
    color: var(--color-primary);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-ghost {
    background: transparent;
    border: 1px solid rgba(240, 248, 255, 0.3);
    color: var(--color-text-on-primary);
}

.btn-ghost:hover {
    background: rgba(240, 248, 255, 0.08);
    backdrop-filter: blur(14px);
}

.btn-sm {
    padding: 8px 18px;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 18px 42px;
    font-size: var(--font-size-lg);
}

/* ========== 表单与输入 ========== */
input,
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-md);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(0, 12, 57, 0.08);
    background: rgba(255, 255, 255, 0.95);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: rgba(30, 61, 143, 0.8);
    box-shadow: 0 0 0 4px rgba(30, 61, 143, 0.2);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

/* ========== 辅助元素 ========== */
.section-headline {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--spacing-3xl);
}

.divider {
    height: 1px;
    width: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 10, 60, 0.15), transparent);
    margin: var(--spacing-xxl) 0;
}

.floating {
    animation: float var(--transition-slow) infinite alternate;
}

.glow {
    box-shadow: 0 0 0 1px rgba(240, 248, 255, 0.3), 0 0 25px rgba(30, 61, 143, 0.45);
}

/* ========== 动画 ========== */
@keyframes float {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(-10px);
    }
}

@keyframes waveMotion {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 20, 60, 0.5);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(220, 20, 60, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(220, 20, 60, 0);
    }
}

/* ========== 响应式辅助类 ========== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

@media (max-width: 768px) {
    .text-right {
        text-align: left;
    }
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}