:root {
    --primary-color: #1a1f3c;
    --secondary-color: #c9a84c;
    --accent-color: #e8c56e;
    --background-color: #0f1227;
    --card-bg-color: #1e2240;
    --text-color: #f0e6c8;
    --text-muted: #c9bda2;
    --border-color: #2e3460;
    --shadow-color: rgba(0, 0, 0, 0.35);
    --hover-color: #2a3060;
    --positive-color: #5ecb8a;
    --negative-color: #e0584d;
    --gradient-start: #0f1227;
    --gradient-end: #1a1f3c;
}

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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(201, 168, 76, 0.18) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(94, 99, 180, 0.22) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
    position: relative;
    animation: fadeInDown 0.8s ease-out;
    /* 載入動畫 */
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #e8c56e, #c9a84c, #f0e6c8);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: none;
    animation: gradientText 8s linear infinite;
}

@keyframes gradientText {
    0% {
        filter: hue-rotate(0deg) brightness(1);
    }

    50% {
        filter: hue-rotate(15deg) brightness(1.2);
    }

    100% {
        filter: hue-rotate(0deg) brightness(1);
    }
}

.search-box {
    max-width: 400px;
    margin: 0 auto;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 50px;
    background: var(--card-bg-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.search-box input:focus {
    outline: none;
    box-shadow: 0 0 5px var(--secondary-color);
    transform: scale(1.02);
    /* 聚焦時微放大 */
}

/* Stock Grid */
.stock-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem;
    animation: fadeIn 0.8s ease-out;
}

.stock-card {
    background: #1e2240;
    border-radius: 20px;
    padding: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 1px solid rgba(201, 168, 76, 0.25);
    position: relative;
    overflow: hidden;
}

.stock-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.stock-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 30px rgba(201, 168, 76, 0.15), 0 5px 15px rgba(0, 0, 0, 0.3);
    border-color: rgba(201, 168, 76, 0.6);
    background: #252b4d;
}

.stock-card:hover::before {
    transform: translateX(100%);
}

.stock-card img {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.stock-card:hover img {
    transform: scale(1.1);
}

.stock-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.stock-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.stock-details p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.price-change {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.price-change.positive {
    background: rgba(46, 204, 113, 0.2);
    color: var(--positive-color);
}

.price-change.negative {
    background: rgba(231, 76, 60, 0.2);
    color: var(--negative-color);
}

.price-change:hover {
    transform: scale(1.1);
    /* 懸停時放大 */
}

/* Backtest Page */
.hidden {
    display: none;
}

.backtest-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    animation: slideInDown 0.8s ease-out;
}

@keyframes slideInDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.back-button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 50px;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    color: #0f1227;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.back-button:hover {
    transform: translateX(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.back-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
}

.back-button:hover::after {
    transform: translateX(100%);
    transition: transform 0.6s;
}

.backtest-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    animation: fadeIn 0.8s ease-out;
}

.backtest-params {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 20px;
    height: fit-content;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.backtest-params:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.param-group {
    margin-bottom: 1.5rem;
}

.param-group label {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

.param-group input,
.param-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.param-group input:focus,
.param-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(46, 204, 113, 0.2);
}

.calculate-button {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    color: #0f1227;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.calculate-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.calculate-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
}

.calculate-button:hover::after {
    transform: translateX(100%);
    transition: transform 0.6s;
}

.investment-days {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
    margin-top: 10px;
    margin-bottom: 2rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 4px;
    /* 減少間距，避免文字換行 */
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    /* 讓文字變白色 */
    white-space: nowrap;
    /* 防止換行 */
}

.checkbox-label:hover {
    background: rgba(255, 255, 255, 0.1);
}

.checkbox-label input[type="checkbox"] {
    width: 14px;
    /* 調整大小，讓它不會太佔空間 */
    height: 14px;
    border-radius: 4px;
    border: 2px solid var(--accent-color);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
    /* 確保 checkbox 不會變形 */
}

.checkbox-label input[type="checkbox"]:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.checkbox-label input[type="checkbox"]:checked::before {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    /* 調整勾選符號大小 */
    font-weight: bold;
}



#resultsSection {
    animation: slideInUp 0.8s ease-out;
}

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.performance-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card.large {
    background: var(--card-bg-color);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.6s ease-out;
}

.metric-card.large:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.metric-card.large h4 {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.metric-card.large p {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.metric-card.large .sub-metric {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
}

.metric-card.large .sub-metric .label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

.metric-card.large .sub-metric span:last-child {
    font-weight: 500;
    margin-left: 0.25rem;
}

.positive {
    color: var(--positive-color) !important;
}

.negative {
    color: var(--negative-color) !important;
}

.chart-container {
    background: var(--card-bg-color);
    padding: 1.5rem;
    border-radius: 20px;
    height: 400px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease-out;
}

.chart-container .highcharts-text-outline {
    stroke: none;
}

.chart-container .highcharts-axis-labels text,
.chart-container .highcharts-legend-item text,
.chart-container .highcharts-axis-title,
.chart-container .highcharts-title {
    fill: #ffffff !important;
    color: #ffffff !important;
    text-shadow: none !important;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .backtest-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .backtest-content {
        grid-template-columns: 1fr;
    }

    .stock-grid {
        grid-template-columns: 1fr;
    }

    .stock-card {
        text-align: center;
    }

    .stock-card img {
        margin: 0 auto 1rem;
    }

    .features-list {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 1rem;
    }

    .calculate-button {
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 40px);
        z-index: 1000;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        animation: slideInUp 0.3s ease-out;
    }

    .calculate-button:hover {
        transform: translateX(-50%) translateY(-2px);
    }

    .backtest-params {
        margin-bottom: 100px;
    }

    .results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .result-item {
        margin-bottom: 0.5rem;
        padding: 1.2rem;
    }

    .result-item label {
        font-size: 0.9rem;
    }

    .result-item span {
        font-size: 1.3rem;
    }

    .description {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }

    .features-list {
        padding: 0 1rem;
    }

    .features-list li {
        padding: 1.5rem;
    }

    .features-list li strong {
        font-size: 1rem;
    }

    .features-list li p {
        font-size: 0.9rem;
    }

    .check-mark {
        font-size: 1.2rem;
    }

    .investment-days {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: auto;
    }

    .description {
        white-space: normal;
        overflow: visible;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .stock-card h3 {
        font-size: 1.1rem;
    }

    .stock-details p {
        font-size: 0.75rem;
    }

    .param-group label {
        font-size: 0.9rem;
    }

    .calculate-button {
        font-size: 0.8rem;
    }

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

/* 回測結果區塊初始隱藏 */
.backtest-results {
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.6s ease-in-out;
}

/* 顯示時下滑效果 */
.backtest-results.show {
    transform: translateY(0);
    opacity: 1;
}

/* 小點點載入動畫 */
.loading-dots::after {
    content: " . . .";
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0% {
        content: " .";
    }

    33% {
        content: " . .";
    }

    66% {
        content: " . . .";
    }
}

.company-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    animation: fadeIn 0.8s ease-out;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.detail-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.detail-item .label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.detail-item .value {
    font-size: 1.1rem;
    font-weight: 500;
}

.company-products {
    margin-top: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.company-products h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.company-products p {
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.features-list {
    margin: 2rem auto;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
}

.features-list li {
    background: rgba(255, 255, 255, 0.08);
    padding: 1.8rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: 100%;
}

.features-list li:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

.features-list li strong {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    color: var(--text-color);
}

.features-list li p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0 0 1rem 0;
}

/* Feature card CTA buttons */
.feature-cta-btn {
    display: inline-block;
    padding: 0.48rem 1.2rem;
    background: linear-gradient(135deg, #c9a84c, #e8c56e);
    border: none;
    border-radius: 8px;
    color: #0f1227;
    font-size: 0.85rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 0.2rem;
}

.feature-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(201, 168, 76, 0.45);
    color: #0f1227;
}

.check-mark {
    color: var(--accent-color);
    font-size: 1.4rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    font-size: 1.2rem;
    color: var(--text-color);
    line-height: 1.8;
    animation: fadeIn 1s ease-out;
    padding: 0 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.small.text-muted {
    color: var(--text-muted) !important;
    font-size: 0.9rem;
    text-align: center;
    margin-top: 2rem;
    animation: fadeIn 1s ease-out;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0 2rem;
}

.result-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    text-align: center;
}

.result-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.result-item label {
    display: block;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.result-item span {
    display: block;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.stock-card p {
    color: var(--text-muted);
    margin: 0.5rem 0;
}

.stock-sector {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 圖表相關樣式 */
#performanceChart {
    color: #ffffff;
}

#performanceChart text {
    fill: #ffffff !important;
}

#performanceChart .highcharts-axis-labels text,
#performanceChart .highcharts-legend-item text,
#performanceChart .highcharts-axis-title,
#performanceChart .highcharts-title,
#performanceChart .highcharts-legend-title,
#performanceChart .highcharts-data-labels text,
#performanceChart .highcharts-tooltip text {
    fill: #ffffff !important;
    color: #ffffff !important;
    text-shadow: none !important;
}

#performanceChart .highcharts-grid-line {
    stroke: rgba(255, 255, 255, 0.1);
}

#performanceChart .highcharts-axis-line {
    stroke: rgba(255, 255, 255, 0.3);
}

/* ── Navbar ── */
.navbar {
    background: rgba(8, 10, 24, 0.92);
    padding: 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid rgba(201, 168, 76, 0.3);
    height: 52px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    position: sticky;
    top: 0;
    z-index: 900;
}

/* 讓 navbar 內的 container 充滿全寬，不受 Bootstrap max-width 局限 */
.navbar>.container,
.navbar>.container-fluid {
    max-width: 100%;
    padding-left: 1.5rem;
    padding-right: 1rem;

    display: flex;
    align-items: center;
    /* 確保漢堡/Logo 垂直置中 */
    height: 100%;
}

/* ── RAY DCA 品牌 Logo ── */
.navbar-brand-logo {
    font-family: TESLA, sans-serif;
    font-size: 1.45rem;
    font-weight: 400;
    letter-spacing: 0.18em;
    line-height: 1;
    /* 不再用 52px 十容對齊，交給 flex 父層控制 */
    padding-left: 0;
    margin-right: auto;
    /* 把 nav 擠到右邊 */
    align-self: center;
    /* 在 flex 容器裡垂直置中 */
    position: relative;
    user-select: none;
    /* 金屬銀漸層文字 */
    background: linear-gradient(135deg,
            #a8acb8 0%,
            #e8eaf0 25%,
            #ffffff 40%,
            #d4d8e4 55%,
            #9fa3af 75%,
            #c8ccd8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    /* 光暈 */
    filter: drop-shadow(0 0 6px rgba(220, 228, 255, 0.55)) drop-shadow(0 0 14px rgba(180, 200, 255, 0.30));
    animation: logoGlow 4s ease-in-out infinite;
    transition: filter 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.navbar-brand-logo:hover {
    filter: drop-shadow(0 0 10px rgba(220, 228, 255, 0.85)) drop-shadow(0 0 24px rgba(201, 168, 76, 0.45));
    background: linear-gradient(135deg,
            #c8ccd8 0%,
            #ffffff 30%,
            #e8c56e 50%,
            #ffffff 70%,
            #c0c4d0 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

@keyframes logoGlow {

    0%,
    100% {
        filter: drop-shadow(0 0 5px rgba(200, 215, 255, 0.5)) drop-shadow(0 0 12px rgba(180, 200, 255, 0.25));
    }

    50% {
        filter: drop-shadow(0 0 9px rgba(220, 235, 255, 0.85)) drop-shadow(0 0 20px rgba(200, 220, 255, 0.45));
    }
}

/* ── Nav links ── */
.navbar-nav {
    gap: 0.5rem;
    margin-left: auto;
    /* 推離 logo */
    margin-right: 3rem;
    /* 不要緻造到最右端，居中間偏右 */
}

.nav-link {
    color: rgba(200, 189, 162, 0.85);
    transition: color 0.25s ease, background 0.25s ease;
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.88rem;
    letter-spacing: 0.03em;
}

.nav-link:hover,
.nav-link.active {
    color: #e8c56e;
    background: rgba(201, 168, 76, 0.1);
}

/* ── 自訂漢堡按鈕 ── */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    align-self: center;
    /* 在 flex 容器裡垂直置中 */
    width: 36px;
    height: 36px;
    gap: 5px;
    cursor: pointer;
    padding: 0;
    background: none;
    border: none;
    margin-right: 0.8rem;
    z-index: 1100;
    flex-shrink: 0;
}

.hamburger .bar {
    display: block;
    width: 22px;
    height: 1px;
    border-radius: 2px;
    background: rgba(220, 215, 200, 0.88);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.25s ease,
        width 0.3s ease;
    transform-origin: center;
}

/* 漢堡 → X 動畫 */
.hamburger.open .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.open .bar:nth-child(2) {
    opacity: 0;
    width: 0;
}

.hamburger.open .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── 暗幕遮罩（手機用）── */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s 0.31s;
    backdrop-filter: blur(2px);
    pointer-events: none;
}

.nav-overlay.show {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0s 0s;
    pointer-events: auto;
}

/* ── 手機響應（768px 以下）── */
@media (max-width: 768px) {
    .navbar {
        height: 50px;
    }

    .hamburger {
        display: flex;
    }

    /* Bootstrap 的 toggler + 原生 collapse 影響全部禁用 */
    .navbar-toggler {
        display: none !important;
    }

    /* 用 visibility+opacity 控制，繞開 Bootstrap 的 display:none */
    .navbar-collapse {
        display: block !important;
        /* 強制顯示，不讓 Bootstrap 用 display:none */
        visibility: hidden;
        opacity: 0;
        pointer-events: none;
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: auto;
        width: 220px;
        height: 100vh;
        background: linear-gradient(160deg, #0d1020 0%, #151830 100%);
        padding: 4.5rem 1.2rem 2rem;
        transform: translateX(100%);
        transition:
            transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
            opacity 0.3s ease,
            visibility 0s 0.36s;
        /* 關閉後再障藏 */
        z-index: 1000;
        border-left: 1px solid rgba(201, 168, 76, 0.2);
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.6);
    }

    .navbar-collapse.show {
        visibility: visible;
        opacity: 1;
        pointer-events: auto;
        transform: translateX(0);
        transition:
            transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
            opacity 0.3s ease,
            visibility 0s 0s;
        /* 開啟時立刻可見 */
    }

    .navbar-nav {
        flex-direction: column;
        gap: 0.4rem;
        margin-left: 0;
        /* 手機擺區不需要 */
        margin-right: 0;
    }

    /* 手機上 logo 不需要 letter-spacing 屁加 */
    .navbar-brand-logo {
        font-size: 1.2rem;
    }

    .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
        border-radius: 8px;
    }

    .nav-link:hover {
        background: rgba(201, 168, 76, 0.1);
    }
}

.footer {
    background: rgba(10, 12, 30, 0.95);
    padding: 1rem 0;
    margin-top: 3rem;
    border-top: 1px solid rgba(201, 168, 76, 0.3);
}

.footer p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.9rem;
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer a:hover {
    color: var(--text-color);
    text-decoration: underline;
}

.stock-request-form {
    display: flex;
    justify-content: flex-end;
}

.stock-request-form .input-group {
    max-width: 400px;
    background: #1e2240;
    border-radius: 8px;
    padding: 4px;
    border: 1px solid rgba(201, 168, 76, 0.25);
}

.stock-request-form .form-control {
    background: #1e2240;
    border: none;
    color: var(--text-color);
    padding: 8px 12px;
    font-size: 0.9rem;
}

.stock-request-form .form-control::placeholder {
    color: #8899aa;
}

.stock-request-form .form-control:focus {
    box-shadow: none;
    outline: none;
}

.stock-request-form .btn-accent {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    color: #0f1227;
    border: none;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.stock-request-form .btn-accent:hover {
    background: linear-gradient(45deg, var(--accent-color), #f5d78a);
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .stock-request-form {
        margin-top: 1rem;
        justify-content: center;
    }

    .stock-request-form .input-group {
        width: 100%;
    }
}

.btn-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    padding: 0.5rem;
    color: var(--text-muted);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.btn-close::before {
    content: '×';
    font-size: 2rem;
    line-height: 1;
    color: var(--text-color);
}

.btn-close:hover {
    opacity: 1;
}

@font-face {
    font-family: TESLA;
    src: url(./font/TESLA.ttf);
}