:root {
    --bg-primary: #0d0d0f;
    --bg-secondary: #151518;
    --bg-card: #1a1a1f;
    --bg-card-hover: #222228;

    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-glow: rgba(59, 130, 246, 0.3);

    --discord-blue: #5865F2;
    --discord-blue-hover: #4752c4;

    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.1);

    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);

    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);

    --border-color: #27272a;
    --border-radius: 12px;
    --border-radius-sm: 8px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--accent-glow);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    background-image:
            radial-gradient(ellipse at top, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
            radial-gradient(ellipse at bottom right, rgba(88, 101, 242, 0.05) 0%, transparent 50%);
}

.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--discord-blue));
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.header-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    filter: drop-shadow(0 0 10px var(--accent-glow));
}

.header-text {
    flex: 1;
}

.header-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: left;
}

.header-text .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
    text-align: left;
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 0.95rem;
}

.subtitle strong {
    color: var(--accent-secondary);
}

.link-form {
    margin-bottom: 28px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: all 0.2s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

.input-hint {
    display: block;
    margin-top: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.discord-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 24px;
    background: var(--discord-blue);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all 0.2s ease;
}

.discord-button:hover {
    background: var(--discord-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.4);
}

.discord-button:active {
    transform: translateY(0);
}

.discord-icon {
    width: 24px;
    height: 24px;
}

.error-message {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--error-bg);
    border: 1px solid var(--error);
    border-radius: var(--border-radius-sm);
    margin-bottom: 24px;
    color: var(--error);
    font-size: 0.875rem;
}

.error-message svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}

.error-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--error-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--border-radius-sm);
    margin-bottom: 24px;
    text-align: center;
}

.error-box svg {
    width: 48px;
    height: 48px;
    color: var(--error);
}

.error-box p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

.info-section {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.info-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.steps {
    list-style: none;
    counter-reset: steps;
}

.steps li {
    counter-increment: steps;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.steps li::before {
    content: counter(steps);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-secondary);
    flex-shrink: 0;
}

.steps code {
    font-family: var(--font-mono);
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85em;
    color: var(--accent-secondary);
}

.link-info {
    margin: 24px 0;
}

.link-pair {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.account {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    min-width: 140px;
}

.account-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.account-name {
    font-weight: 600;
    color: var(--text-primary);
}

.minecraft-account {
    border-color: rgba(34, 197, 94, 0.3);
}

.discord-account {
    border-color: rgba(88, 101, 242, 0.3);
}

.link-arrow svg {
    width: 24px;
    height: 24px;
    color: var(--text-muted);
}

.code-section {
    text-align: center;
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin: 24px 0;
}

.code-section h2 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.code-display {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.code-char {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 56px;
    background: var(--bg-secondary);
    border: 2px solid var(--accent-primary);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-secondary);
    box-shadow: 0 0 15px var(--accent-glow);
}

.copy-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-button:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.copy-button svg {
    width: 16px;
    height: 16px;
}

.instructions h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.final-steps {
    list-style: none;
}

.final-steps li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 12px 0;
}

.step-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--accent-primary);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content strong {
    display: block;
    margin-bottom: 2px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.step-content code {
    font-family: var(--font-mono);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    color: var(--accent-secondary);
}

.warning-box {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--warning-bg);
    border: 1px solid var(--warning);
    border-radius: var(--border-radius-sm);
    margin-top: 24px;
}

.warning-box svg {
    width: 20px;
    height: 20px;
    color: var(--warning);
    flex-shrink: 0;
    margin-top: 1px;
}

.warning-box p {
    color: var(--warning);
    font-size: 0.875rem;
    margin: 0;
}

.retry-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 24px;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--border-radius-sm);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.retry-button:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px);
}

.retry-button svg {
    width: 20px;
    height: 20px;
}

footer {
    text-align: center;
    padding-top: 32px;
}

footer p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (max-width: 480px) {
    .container {
        padding: 20px 16px;
    }

    .card {
        padding: 24px 20px;
    }

    .card-header {
        gap: 12px;
    }

    .header-logo {
        width: 48px;
        height: 48px;
    }

    .header-text h1 {
        font-size: 1.25rem;
    }

    .link-pair {
        flex-direction: column;
    }

    .link-arrow svg {
        transform: rotate(90deg);
    }

    .account {
        width: 100%;
    }

    .code-char {
        width: 40px;
        height: 48px;
        font-size: 1.25rem;
    }

    .popup {
        margin: 20px;
        padding: 24px;
    }
}

.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.popup {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: popupIn 0.3s ease;
}

@keyframes popupIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.popup-icon {
    margin-bottom: 20px;
}

.popup-icon svg {
    width: 64px;
    height: 64px;
    color: var(--discord-blue);
}

.popup h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.popup p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.6;
}

.popup-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.popup-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

.popup-button.primary {
    background: var(--discord-blue);
    color: white;
}

.popup-button.primary:hover {
    background: var(--discord-blue-hover);
    transform: translateY(-1px);
}

.popup-button.primary svg {
    width: 20px;
    height: 20px;
}

.popup-button.secondary {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.popup-button.secondary:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.mc-input-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mc-head {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.mc-status {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    min-height: 1.2em;
}

.mc-status.loading { color: var(--text-secondary); }
.mc-status.good { color: var(--success); }
.mc-status.bad { color: var(--error); }