/* CSS for RandomCallTool Official Website */

body {
    background-color: rgb(222, 242, 242);
    font-family: MiSans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 0;
    padding-top: 45px;
    color: #333;
}

a, a:hover, a:active, a:visited {
    text-decoration: none;
    color: #448AFF;
}

.header {
    background-color: rgb(255, 255, 255);
    height: 45px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    margin: 0 auto;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.header b {
    font-size: 18px;
    margin: 0;
    margin-left: 20px;
    padding: 0;
    text-align: center;
    line-height: 45px;
    display: inline-block;
}

.header a {
    color: rgb(102, 102, 102);
    margin-left: 15px;
}

.header-right {
    font-size: 16px;
    margin: 0;
    margin-right: 20px;
    padding: 0;
    text-align: center;
    line-height: 45px;
    display: block;
    float: right;
}

.header-right a {
    color: rgb(102, 102, 102);
    transition: transform 0.5s ease;
    display: inline-block;
}

.header-right a:hover {
    color: #448AFF;
}

.header-right a:hover img {
    transform: scale(1.1);
}

.header-right img {
    padding-top: 12px;
    vertical-align: top;
}

@keyframes colorChange {
    0% { color: rgb(65, 105, 225); }
    9.09% { color: rgb(70, 130, 180); }
    18.18% { color: rgb(100, 149, 237); }
    27.27% { color: rgb(123, 104, 238); }
    36.36% { color: rgb(135, 206, 250); }
    45.45% { color: rgb(100, 149, 237); }
    54.55% { color: rgb(65, 105, 225); }
    63.63% { color: rgb(72, 61, 139); }
    72.72% { color: rgb(100, 149, 237); }
    81.81% { color: rgb(70, 130, 180); }
    100% { color: rgb(65, 105, 225); }
}

.main {
    margin: 0 auto;
    max-width: 960px;
}

.hero {
    text-align: center;
    padding: 60px 20px 40px;
}

.hero img {
    margin-bottom: 20px;
}

.hero h1 {
    animation: colorChange 5s infinite;
    font-size: 2.5em;
    margin: 10px 0;
}

.hero .subtitle {
    font-size: 1.2em;
    color: #666;
    margin: 5px 0;
    letter-spacing: 2px;
}

.hero p {
    color: #555;
    font-size: 1.05em;
    margin: 15px 0;
}

.hero-buttons {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.button {
    font-family: "MiSans-SemiBold", MiSans, sans-serif;
    padding: 14px 32px;
    border-radius: 10px;
    display: inline-block;
    font-size: 1em;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.button.primary:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.button.secondary {
    background-color: rgba(255, 255, 255, 0.8);
    color: #448AFF !important;
    border: 2px solid #448AFF;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.button.secondary:hover {
    background-color: rgba(68, 138, 255, 0.1);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.section {
    margin: 40px 20px;
    scroll-margin-top: 60px;
}

.section h2 {
    text-align: center;
    font-size: 1.8em;
    color: #444;
    margin-bottom: 30px;
    position: relative;
}

.section h2::after {
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    margin: 10px auto 0;
    border-radius: 2px;
}

.about-content {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #ccc;
    max-width: 700px;
    margin: 0 auto;
}

.about-content p {
    line-height: 1.8;
    margin: 10px 0;
    color: #444;
}

.about-info {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    justify-content: center;
}

.info-item {
    background-color: rgba(255, 255, 255, 0.6);
    padding: 10px 18px;
    border-radius: 8px;
    border: 1px solid #ddd;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
}

.info-label {
    font-size: 0.85em;
    color: #888;
    margin-bottom: 4px;
}

.info-value {
    font-weight: 600;
    color: #444;
    font-size: 1.05em;
}

.features-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.feature-card {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 10px;
    max-width: 280px;
    min-width: 240px;
    flex: 0 1 calc(33.333% - 30px);
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.feature-card.small {
    max-width: 220px;
    min-width: 180px;
    flex: 0 1 calc(25% - 20px);
}

.feature-icon {
    font-size: 2em;
    margin-bottom: 10px;
}

.feature-card h3 {
    font-size: 1.1em;
    color: #444;
    margin: 10px 0;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
    font-size: 0.95em;
}

.gallery-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.gallery-item {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 10px;
    max-width: 320px;
    flex: 0 1 calc(50% - 40px);
    min-width: 260px;
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gallery-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.gallery-item img {
    width: 100%;
    border-radius: 6px;
    border: 1px solid #eee;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.gallery-item p {
    margin-top: 10px;
    color: #666;
    font-size: 0.95em;
}

.modes-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.mode-card {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 25px;
    border: 1px solid #ccc;
    border-radius: 10px;
    max-width: 280px;
    min-width: 240px;
    flex: 0 1 calc(33.333% - 30px);
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.mode-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.mode-card h3 {
    font-size: 1.05em;
    color: #444;
    margin: 10px 0;
}

.mode-card p {
    color: #666;
    line-height: 1.7;
    font-size: 0.93em;
}

.mode-card code {
    background-color: rgba(0,0,0,0.06);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.95em;
    font-family: "Consolas", "Courier New", monospace;
}

.mode-badge {
    display: inline-block;
    padding: 3px 14px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
    margin: 8px 0;
}

.mode-badge.basic {
    background-color: rgba(68, 138, 255, 0.15);
    color: #448AFF;
}

.mode-badge.smart {
    background-color: rgba(102, 126, 234, 0.15);
    color: #667eea;
}

.mode-badge.weighted {
    background-color: rgba(118, 75, 162, 0.15);
    color: #764ba2;
}

.encode-content {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #ccc;
    max-width: 700px;
    margin: 0 auto;
}

.encode-content p {
    text-align: center;
    line-height: 1.8;
    color: #444;
    margin-bottom: 25px;
}

.encode-content code {
    background-color: rgba(0,0,0,0.06);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "Consolas", "Courier New", monospace;
}

.download-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.download-card {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 25px;
    border: 1px solid #ccc;
    border-radius: 10px;
    max-width: 280px;
    min-width: 240px;
    flex: 0 1 calc(33.333% - 30px);
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.download-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.download-card h3 {
    font-size: 1.15em;
    color: #444;
    margin: 10px 0;
}

.download-card p {
    color: #666;
    line-height: 1.6;
    font-size: 0.93em;
    margin: 12px 0;
}

.download-card .button {
    margin-top: 8px;
}

.download-note {
    color: #999 !important;
    font-size: 0.85em !important;
}

.build-content {
    background-color: rgba(255, 255, 255, 0.4);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #ccc;
    max-width: 700px;
    margin: 0 auto;
}

.build-content p {
    text-align: center;
    color: #444;
    margin-bottom: 15px;
}

.build-content ol {
    line-height: 2;
    color: #555;
    padding-left: 20px;
}

.build-content li {
    margin: 8px 0;
}

.build-content code {
    background-color: rgba(0,0,0,0.06);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "Consolas", "Courier New", monospace;
    font-size: 0.9em;
}

.footer {
    margin-top: 60px;
    padding: 25px 20px;
    text-align: center;
    color: #7a7a7a;
}

.footer p {
    margin: 5px 0;
}

.footer-note {
    font-size: 0.85em;
    color: #999;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.8em;
    }

    .feature-card {
        flex: 0 1 calc(50% - 20px);
        min-width: 180px;
    }

    .feature-card.small {
        flex: 0 1 calc(50% - 20px);
    }

    .gallery-item {
        flex: 0 1 100%;
        max-width: 360px;
    }

    .mode-card {
        flex: 0 1 calc(50% - 20px);
        min-width: 200px;
    }

    .download-card {
        flex: 0 1 calc(50% - 20px);
        min-width: 200px;
    }

    .about-info {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 40px;
    }

    .header b {
        font-size: 16px;
        margin-left: 12px;
    }

    .hero {
        padding: 40px 15px 30px;
    }

    .hero h1 {
        font-size: 1.5em;
    }

    .feature-card,
    .feature-card.small,
    .mode-card,
    .download-card {
        flex: 0 1 100%;
        max-width: 300px;
    }

    .section {
        margin: 30px 12px;
    }

    .section h2 {
        font-size: 1.4em;
    }

    .button {
        padding: 12px 24px;
        font-size: 0.9em;
    }
}