*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    --bg-dark: #1a1a2e;
    --bg-light: #16213e;
    --card-bg: #0f3460;
    --accent-color: #e94560;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0c0;
    --border-color: rgba(233, 69, 96, 0.2);
    --shadow-color: rgba(233, 69, 96, 0.1);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap');

html {
    height: 100%;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    margin: 0;
    height: 100%;

}


.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem;


    display: flex;
    flex-direction: column;


    min-height: 100vh;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    margin-bottom: 1.5rem;
}

.logo {
    font-size: 1.5em;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-header {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 0.9em;
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: none;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.btn-header:hover {
    background-color: var(--card-bg);
    color: #fff;
    border-color: var(--accent-color);
}

.btn-header i {
    font-size: 1.1em;
}


.main-content {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 1.5rem;


    flex-grow: 1;
}

.panel {
    background-color: var(--bg-light);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 8px 24px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.connection-panel {
    max-width: 300px;
}

h2 {
    font-size: 1.5em;
    margin-top: 0;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.panel h2 {
    white-space: nowrap;
}


.download-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.desktop-downloads,
.mobile-downloads {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.download-card {
    background-color: var(--card-bg);
    padding: 1rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.download-card i {
    font-size: 2.5em;
    margin-bottom: 0;
    color: var(--accent-color);
}

.download-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1em;
    text-align: center;
}

.btn-download {
    display: block;
    width: 100%;
    padding: 8px 15px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9em;
    background-color: var(--accent-color);
    color: #fff;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
    transition: all 0.3s ease;
    text-align: center;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.6);
}


.btn-download-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    width: 100%;
}

.btn-download-group .btn-download {
    flex-grow: 1;
    text-align: center;
}

.config-item {
    margin-bottom: 1rem;
}

.config-label {
    display: block;
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: left;
}

.value-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 6px;
    font-family: 'Courier New', Courier, monospace;
    overflow-x: auto;
}

.config-value {
    color: #fff;
    flex-grow: 1;
    white-space: nowrap;
    font-size: 0.9em;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.copy-btn {
    background: none;
    border: 1px solid var(--text-secondary);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8em;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    flex-shrink: 0;
    box-sizing: border-box;
    width: 90px;
    height: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.copy-btn:focus {
    outline: none;
}

.copy-btn:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.copy-btn:active {
    background: #c9304a;
}

.copy-btn.copied {
    background-color: #28a745;
    color: #fff;
    border-color: #28a745;
}

.qr-code-wrapper {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-code-placeholder {
    width: 150px;
    height: 150px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 0.5rem auto 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.qr-code-placeholder img {
    max-width: 100%;
    max-height: 100%;
    display: block;
    transition: width 0.3s ease, height 0.3s ease;
}

.qr-code-placeholder {
    cursor: pointer;
    transition: width 0.3s ease, height 0.3s ease, transform 0.3s ease, top 0.3s ease, left 0.3s ease;
    position: relative;
}

.qr-code-placeholder.qr-code-expanded {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    background-color: var(--bg-dark);
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 30px rgba(233, 69, 96, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--expanded-qr-size, 220px);
    height: var(--expanded-qr-size, 220px);
    padding: 10px;
}

.qr-code-expanded img {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
    image-rendering: crisp-edges;
    image-rendering: -moz-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: pixelated;
}


.qr-code-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: none;
    transition: opacity 0.3s ease;
    opacity: 0;
}

.qr-code-overlay.active {
    display: block;
    opacity: 1;
}

.qr-code-placeholder i {
    font-size: 5em;
    color: var(--text-secondary);
    opacity: 0.5;
}


.site-footer {
    text-align: center;
    padding: 1.5rem 0 1rem 0;
    font-size: 0.9em;
    color: var(--text-secondary);

}


@media (max-width: 992px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .download-grid {
        flex-direction: column;
    }
}

@media (max-width: 576px) {
    .header-actions {
        gap: 0.5rem;
    }

    .btn-header {
        padding: 6px 10px;
    }

    .btn-header span {
        display: none;
    }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    color: white;
    font-size: 1.2em;
    display: none;
}

.loading-overlay>div {
    background-color: rgba(30, 40, 60, 0.9);
    padding: 30px 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.loading-spinner {
    border: 8px solid rgba(255, 255, 255, 0.3);
    border-top: 8px solid var(--accent-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}