/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-text-primary);
    background: linear-gradient(
        135deg,
        var(--color-background) 0%,
        var(--color-primary-dark) 100%
    );
    min-height: 100vh;
    padding: var(--spacing-md);
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    background-color: rgba(26, 43, 74, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: linear-gradient(
        180deg,
        var(--color-primary-dark) 0%,
        var(--color-primary) 100%
    );
    border-bottom: 2px solid var(--color-accent);
}

.ornamental-line {
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-accent) 50%,
        transparent 100%
    );
    margin: var(--spacing-md) auto;
    max-width: 200px;
}

.title {
    font-family: "pf-marlet-display", sans-serif;
    font-weight: 200;

    font-size: var(--font-size-xl);

    color: var(--color-text-primary);
}

.subtitle {
    font-family: var(--font-primary);
    font-size: var(--font-size-md);
    font-style: italic;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* Intro Section */
.intro-section {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.intro-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 2;
    max-width: 700px;
    margin: 0 auto;
    font-style: italic;
}

/* Section Titles */
.section-title {
    font-family: var(--font-secondary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-accent) 50%,
        transparent 100%
    );
}

/* Download Section */
.download-section {
    margin-bottom: var(--spacing-xl);
}

.download-card {
    background-color: var(--color-background-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.download-description {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.download-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--color-accent);
    background: linear-gradient(
        135deg,
        var(--color-primary) 0%,
        var(--color-secondary) 100%
    );
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    background: linear-gradient(
        135deg,
        var(--color-secondary) 0%,
        var(--color-accent) 100%
    );
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-text-primary);
}

.btn-icon {
    font-size: 1.5rem;
}

/* Instructions Section */
.instructions-section {
    margin-bottom: var(--spacing-xl);
}

.instructions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.instruction-card {
    background-color: var(--color-background-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.instruction-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.device-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(
        135deg,
        var(--color-secondary) 0%,
        var(--color-accent) 100%
    );
    box-shadow: var(--shadow-sm);
}

.device-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-text-primary);
}

.instruction-title {
    font-family: var(--font-secondary);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.instruction-list {
    color: var(--color-text-secondary);
    line-height: 1.9;
    padding-left: var(--spacing-lg);
}

.instruction-list li {
    margin-bottom: var(--spacing-sm);
}

.instruction-list ul {
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    list-style-type: circle;
}

.instruction-list strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.instruction-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: rgba(91, 127, 168, 0.15);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Additional Info */
.additional-info {
    margin-bottom: var(--spacing-xl);
}

.info-card {
    background-color: var(--color-background-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.info-title {
    font-family: var(--font-secondary);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.info-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-style: italic;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(
        180deg,
        var(--color-primary) 0%,
        var(--color-primary-dark) 100%
    );
    border-top: 2px solid var(--color-accent);
}

.footer-text {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-style: italic;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }

    .title {
        font-size: var(--font-size-lg);
    }

    .subtitle {
        font-size: var(--font-size-base);
    }

    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .section-title {
        font-size: var(--font-size-md);
    }

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

    .btn {
        width: 100%;
        justify-content: center;
    }

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

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .title {
        font-size: var(--font-size-md);
        letter-spacing: 1px;
    }

    .subtitle {
        font-size: var(--font-size-sm);
    }

    .intro-text {
        font-size: var(--font-size-sm);
    }
}

/* Device Detection Styles */
.device-detection-message {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: linear-gradient(
        135deg,
        rgba(91, 127, 168, 0.2) 0%,
        rgba(58, 90, 127, 0.2) 100%
    );
    border: 1px solid var(--color-accent);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: fadeIn 0.5s ease-in;
}

.detection-icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: linear-gradient(
        135deg,
        var(--color-accent) 0%,
        var(--color-secondary) 100%
    );
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-text-primary);
    font-weight: bold;
}

.device-detection-message p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* Active Device Highlighting */
.instruction-card.active-device {
    border: 2px solid var(--color-accent);
    box-shadow: 0 0 20px rgba(91, 127, 168, 0.4);
    animation: pulse 2s ease-in-out;
}

.instruction-card.inactive-device {
    opacity: 0.5;
    transition: opacity var(--transition-normal);
}

.instruction-card.inactive-device.hidden {
    display: none;
}

.instruction-card.inactive-device:not(.hidden) {
    opacity: 0.5;
}

/* Button Highlighting */
.btn-recommended {
    border: 2px solid var(--color-text-primary);
    box-shadow: 0 0 15px rgba(91, 127, 168, 0.5);
    animation: pulse 2s ease-in-out;
}

.btn-secondary {
    opacity: 0.7;
}

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

/* Toggle Instructions Button */
.toggle-instructions-btn {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-md) auto var(--spacing-lg);
    display: block;
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
}

.toggle-instructions-btn:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-accent);
    color: var(--color-text-primary);
}

.toggle-instructions-btn.expanded {
    background-color: var(--color-primary-light);
    color: var(--color-text-primary);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%,
    100% {
        box-shadow: 0 0 15px rgba(91, 127, 168, 0.3);
    }
    50% {
        box-shadow: 0 0 25px rgba(91, 127, 168, 0.6);
    }
}

/* Responsive adjustments for device detection */
@media (max-width: 480px) {
    .device-detection-message {
        flex-direction: column;
        text-align: center;
    }

    .device-detection-message p {
        font-size: var(--font-size-sm);
    }
}