/* ===== 基础 ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --bg-body: #f0f4ff;
    --bg-card: rgba(255, 255, 255, 0.45);
    --bg-card-hover: rgba(255, 255, 255, 0.6);
    --border-color: rgba(255,255,255,0.2);
    --text-primary: #1e293b;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --glass-border: rgba(255,255,255,0.25);
    --glow-primary: 0 4px 30px rgba(99,102,241,0.12);
    --glow-success: 0 4px 20px rgba(16,185,129,0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-shadow: 0 1px 3px rgba(255,255,255,0.6);
}

/* ===== 背景层 ===== */
.bg-layer {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('../images/bg.png') center center / cover no-repeat fixed;
    z-index: -2;
}

.bg-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg,
        rgba(240,244,255,0.5) 0%,
        rgba(240,244,255,0.4) 30%,
        rgba(240,244,255,0.35) 60%,
        rgba(240,244,255,0.55) 100%);
    z-index: -1;
}

.main-wrapper {
    position: relative;
    z-index: 1;
}

/* ===== 卡片通用 ===== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(99,102,241,0.1);
}

.shadow-glow {
    box-shadow: var(--glow-primary);
}

/* ===== Hero 区域 ===== */
.header-card {
    background: linear-gradient(135deg,
        rgba(99,102,241,0.12) 0%,
        rgba(129,140,248,0.08) 50%,
        rgba(255,255,255,0.9) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(99,102,241,0.15);
}

.hero-icon-wrapper {
    width: 72px; height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 25px rgba(99,102,241,0.3);
    flex-shrink: 0;
}
.hero-icon-wrapper i {
    font-size: 32px; color: #fff;
}

.hero-title {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== 统计框 ===== */
.stat-box {
    text-align: center;
    padding: 16px 12px;
    background: rgba(99,102,241,0.04);
    border-radius: 16px;
    border: 1px solid rgba(99,102,241,0.06);
    transition: all 0.3s ease;
}
.stat-box:hover {
    background: rgba(99,102,241,0.08);
    border-color: rgba(99,102,241,0.2);
}
.stat-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}
.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===== 时钟 ===== */
.digital-clock {
    background: rgba(255,255,255,0.35);
    border-radius: 20px;
    padding: 20px 28px;
    border: 1px solid rgba(99,102,241,0.1);
    text-align: center;
    min-width: 180px;
}
.clock-time {
    font-size: 2.2rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: 2px;
    color: var(--text-primary);
}
.clock-time .dots {
    color: var(--primary);
    animation: blink 1s infinite;
}
.clock-time .seconds {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-left: 4px;
}
.clock-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 6px;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ===== Section 图标 ===== */
.section-icon {
    display: flex; align-items: center; justify-content: center;
    width: 48px; height: 48px;
    border-radius: 14px;
}
.bg-primary-glow { background: rgba(99,102,241,0.1); }
.bg-success-glow { background: rgba(16,185,129,0.1); }
.bg-info-glow { background: rgba(6,182,212,0.1); }
.bg-warning-glow { background: rgba(245,158,11,0.1); }
.bg-danger-glow { background: rgba(239,68,68,0.1); }

.text-primary-light { color: var(--primary) !important; }

/* ===== 系统要求卡片 ===== */
.req-card {
    text-align: center;
    padding: 28px 20px;
    background: rgba(255,255,255,0.25);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.15);
    transition: all 0.35s ease;
}
.req-card:hover {
    background: rgba(255,255,255,0.5);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(99,102,241,0.1);
    border-color: rgba(99,102,241,0.15);
}
.req-icon {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: rgba(99,102,241,0.08);
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 16px;
}
.req-icon i { font-size: 26px; color: var(--primary); }
.req-icon-green { background: rgba(16,185,129,0.08); }
.req-icon-green i { color: var(--success); }
.req-icon-blue { background: rgba(6,182,212,0.08); }
.req-icon-blue i { color: var(--info); }
.req-card h5 { color: var(--text-primary); font-size: 1rem; }
.req-card p { color: var(--text-muted) !important; }

/* ===== 版本信息卡片 ===== */
.info-card {
    padding: 20px;
    background: rgba(255,255,255,0.25);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.15);
    text-align: center;
    transition: all 0.3s ease;
}
.info-card:hover {
    background: rgba(255,255,255,0.5);
}
.info-icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: rgba(99,102,241,0.08);
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 10px;
}
.info-icon i { font-size: 18px; color: var(--primary); }
.info-icon-green { background: rgba(16,185,129,0.08); }
.info-icon-green i { color: var(--success); }
.info-icon-blue { background: rgba(6,182,212,0.08); }
.info-icon-blue i { color: var(--info); }
.info-icon-orange { background: rgba(245,158,11,0.08); }
.info-icon-orange i { color: var(--warning); }
.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.info-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== 卡密验证 ===== */
.license-input-group .form-control {
    background: rgba(255,255,255,0.5);
    border-color: rgba(255,255,255,0.3);
    color: var(--text-primary);
}
.license-input-group .form-control:focus {
    background: rgba(255,255,255,0.7);
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(99,102,241,0.15);
    color: var(--text-primary);
}
.license-input-group .input-group-text {
    background: rgba(255,255,255,0.4);
    border-color: rgba(255,255,255,0.3);
    color: var(--primary);
}

/* ===== 下载按钮 ===== */
.download-btn {
    background: linear-gradient(135deg, var(--success), #059669);
    border: none;
    box-shadow: var(--glow-success);
    transition: all 0.3s ease;
    color: #fff;
}
.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(16,185,129,0.3);
    background: linear-gradient(135deg, #34d399, #10b981);
    color: #fff;
}

/* ===== 成功状态 ===== */
.success-icon {
    font-size: 64px;
    color: var(--success);
    animation: successPop 0.5s ease;
}
@keyframes successPop {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* ===== 状态卡片 ===== */
.status-card-item {
    display: flex; align-items: center;
}
.status-icon-wrapper {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
}

/* ===== 表单 ===== */
.form-control::placeholder { color: var(--text-muted); opacity: 0.7; }
.form-control:disabled { background: rgba(255,255,255,0.4) !important; }

/* ===== 模态框 ===== */
.modal-content {
    background: rgba(255,255,255,0.8) !important;
    backdrop-filter: blur(30px);
    color: var(--text-primary);
}
.accordion-button::after {
    filter: none;
}
.accordion-button {
    color: var(--text-primary);
    background: transparent;
}
.accordion-button:not(.collapsed) {
    background: rgba(99,102,241,0.06) !important;
    color: var(--primary);
}
.accordion-body {
    color: var(--text-secondary);
}

/* ===== 动画 ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.card {
    animation: fadeInUp 0.5s ease forwards;
}
.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }

/* ===== 响应式 ===== */
@media (max-width: 576px) {
    .hero-icon-wrapper { width: 56px; height: 56px; }
    .hero-icon-wrapper i { font-size: 24px; }
    .hero-title { font-size: 1.75rem !important; }
    .clock-time { font-size: 1.6rem; }
    .stat-value { font-size: 1.1rem; }
    .download-btn { width: 100%; }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: rgba(99,102,241,0.25); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99,102,241,0.4); }

/* ===== Bootstrap 覆盖 ===== */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    transition: all 0.3s ease;
    color: #fff;
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(99,102,241,0.3);
    color: #fff;
}
.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: #e2e8f0;
}
.btn-outline-secondary:hover {
    background: rgba(99,102,241,0.06);
    border-color: var(--primary);
    color: var(--primary);
}
.btn-outline-danger {
    border-color: rgba(239,68,68,0.3);
    color: var(--danger);
}
.btn-outline-danger:hover {
    background: rgba(239,68,68,0.08);
    border-color: var(--danger);
    color: var(--danger);
}
.alert-dark {
    background: rgba(255,255,255,0.35);
    border-color: rgba(255,255,255,0.2);
    color: var(--text-primary);
}
.badge.bg-success {
    background: rgba(16,185,129,0.1) !important;
    color: #059669;
    border: 1px solid rgba(16,185,129,0.2);
    font-weight: 500;
    padding: 0.4em 0.8em;
}

/* ===== 页脚链接 ===== */
footer a {
    color: var(--primary);
}
footer a:hover {
    color: var(--primary-dark);
}

/* ===== 自助封禁链接 ===== */
#selfBanToggleLink {
    color: var(--danger) !important;
}

/* ===== 安全提示图标 ===== */
.alert .fa-shield-alt {
    color: var(--success);
}
.alert .fa-exclamation-triangle {
    color: var(--warning);
}

/* ===== form-text ===== */
.form-text {
    color: var(--text-muted) !important;
}

/* ===== lead subtitle ===== */
.lead.opacity-80, .lead {
    color: var(--text-secondary);
}