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

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #58a6ff;
    --accent-hover: #79b8ff;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
    --border: #30363d;
    --radius: 6px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    text-align: center;
    padding: 60px 0 40px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* Hero section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 40px 0;
}

@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Features */
.features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.feature .icon {
    font-size: 2rem;
}

.feature h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Login section */
.login-section {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.login-section h2 {
    margin-bottom: 24px;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-google {
    background: white;
    color: #333;
}

.btn-google:hover {
    background: #f1f1f1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

/* How it works */
.how-it-works {
    padding: 60px 0;
}

.how-it-works h2 {
    text-align: center;
    margin-bottom: 40px;
    font-weight: 500;
}

.steps {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.steps li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    max-width: 280px;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    font-weight: 600;
    flex-shrink: 0;
}

.steps h4 {
    font-weight: 500;
    margin-bottom: 4px;
}

.steps p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
}

/* Dashboard styles */
.dashboard {
    padding: 20px 0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.user-name {
    font-weight: 500;
}

.user-email {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Machine cards */
.machines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.machine-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.machine-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.machine-name {
    font-weight: 500;
    font-size: 1.1rem;
}

.machine-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background: var(--success);
}

.status-dot.offline {
    background: var(--text-muted);
}

.machine-sessions {
    margin-bottom: 16px;
}

.session-list {
    list-style: none;
    margin-top: 8px;
}

.session-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    margin-bottom: 4px;
}

.session-name {
    font-family: monospace;
}

.machine-actions {
    display: flex;
    gap: 8px;
}

/* Add machine modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    max-width: 500px;
    width: 90%;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
}

.token-display {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    font-family: monospace;
    word-break: break-all;
    margin: 16px 0;
}

.copy-btn {
    margin-top: 8px;
}

/* Terminal styles */
.terminal-container {
    height: calc(100vh - 100px);
    display: flex;
    flex-direction: column;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.terminal-tabs {
    display: flex;
    gap: 4px;
}

.terminal-tab {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px 4px 0 0;
    cursor: pointer;
    color: var(--text-secondary);
}

.terminal-tab.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-bottom-color: var(--bg-primary);
}

#terminal {
    flex: 1;
    background: #000;
}

/* Responsive */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.8rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .login-section {
        padding: 24px;
    }

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

/* Loading */
.loading {
    display: flex;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state h3 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.alert-success {
    background: rgba(63, 185, 80, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}