/* KeyLockr 官網樣式 */

:root {
    --primary-color: #1DA1F2;
    --primary-hover: #0d8ddb;
    --primary-dark: #1a8cd8;
    --bs-primary: #1DA1F2;
    --bs-primary-rgb: 29, 161, 242;
}

/* 全局樣式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
}

/* 純藍色背景 */
.bg-gradient-primary {
    background-color: #1DA1F2;
}

/* 覆蓋 Bootstrap primary 色 */
.btn-primary {
    background-color: #1DA1F2;
    border-color: #1DA1F2;
    color: #fff;
}

.btn-primary:hover {
    background-color: #0d8ddb;
    border-color: #0d8ddb;
    color: #fff;
}

.btn-outline-primary {
    color: #1DA1F2;
    border-color: #1DA1F2;
}

.btn-outline-primary:hover {
    background-color: #1DA1F2;
    border-color: #1DA1F2;
    color: #fff;
}

.text-primary {
    color: #1DA1F2 !important;
}

.bg-primary {
    background-color: #1DA1F2 !important;
}

/* Dark mode 支持 */
[data-bs-theme="dark"] .bg-gradient-primary {
    background-color: #1a8cd8;
}

[data-bs-theme="dark"] .btn-primary {
    background-color: #1a8cd8;
    border-color: #1a8cd8;
}

[data-bs-theme="dark"] .btn-primary:hover {
    background-color: #2196f3;
    border-color: #2196f3;
}

/* Hero 區域 */
.hero-section {
    min-height: auto;
    display: flex;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
}

/* 功能特色卡片 */
.feature-card {
    transition: transform 0.3s, box-shadow 0.3s;
    border-radius: 12px;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 下載卡片 */
.download-card {
    border-radius: 16px;
}

.download-card .btn {
    transform: none !important;
}

/* 下載按鈕 */
.btn.download-btn {
    border: none !important;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    background-color: #1DA1F2 !important;
}

.btn.download-btn:hover {
    background-color: #0d8ddb !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

[data-bs-theme="dark"] .btn.download-btn {
    background-color: #1a8cd8 !important;
}

[data-bs-theme="dark"] .btn.download-btn:hover {
    background-color: #2196f3 !important;
}

/* 步驟數字 */
.step-number {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

/* 按鈕動畫 */
.btn {
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* 響應式調整 */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }

    .display-4 {
        font-size: 2.5rem;
    }

    .download-card {
        margin-top: 2rem;
    }

    .feature-icon {
        width: 60px;
        height: 60px;
    }

    .d-flex.gap-4 {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* 平滑滾動 */
html {
    scroll-behavior: smooth;
}

/* 頂部浮動按鈕 */
.top-float-btns {
    position: fixed;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
}

.top-float-btns .btn,
.top-float-btns .home-logo {
    pointer-events: auto;
}

.top-float-btns .btn {
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

.home-logo img {
    border-radius: 8px;
}

[data-bs-theme="dark"] .top-float-btns .btn {
    background-color: rgba(33, 37, 41, 0.9);
}

/* 頁腳 */
footer a:hover {
    color: white !important;
}

/* 暗色主題調整 */
[data-bs-theme="dark"] .hero-section {
    background-color: #0d6eaa;
}

[data-bs-theme="dark"] .feature-card {
    background: var(--bs-dark);
    border: 1px solid var(--bs-border-color);
}

[data-bs-theme="dark"] .feature-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* 陰影增強 */
.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important;
}