:root {
    --bg-main: #0d1117;
    --bg-card: #161b22;
    --bg-card-hover: #1f242c;
    --border-color: #30363d;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-yellow: #d29922;
    --accent-red: #f85149;
    --text-primary: #c9d1d9;
    --text-muted: #8b949e;
    --font-mono: 'Consolas', 'Fira Code', 'Cascadia Code', monospace;
    --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-ui);
    overflow-x: hidden;
    height: 100vh;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.5rem;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.brand-icon {
    font-size: 1.6rem;
    color: var(--accent-blue);
}

.brand-title {
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.brand-title strong {
    color: var(--accent-blue);
}

.brand-subtitle {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-stats {
    display: flex;
    gap: 1rem;
}

.stat-pill {
    background-color: var(--bg-main);
    padding: 0.35rem 0.8rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.badge-online {
    color: var(--accent-green);
    font-weight: 600;
}

/* Views */
.main-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.hidden {
    display: none !important;
}

.view-section.hidden {
    display: none !important;
}

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

.text-muted { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.3rem; }
.text-accent { color: var(--accent-blue); }

/* Buttons */
.btn {
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: #238636;
    color: white;
}
.btn-primary:hover { background-color: #2ea043; }

/* Grid */
.computers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.2rem;
}

.computer-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.2rem;
    transition: transform 0.2s, border-color 0.2s;
}

.computer-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.card-body p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.card-footer {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
}

.status-online { background-color: rgba(63, 185, 80, 0.15); color: var(--accent-green); border: 1px solid var(--accent-green); }
.status-offline { background-color: rgba(248, 81, 73, 0.15); color: var(--accent-red); border: 1px solid var(--accent-red); }

.btn-term {
    background-color: #21262d;
    border: 1px solid #30363d;
    color: var(--text-primary);
    padding: 0.35rem 0.7rem;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
    text-decoration: none;
}
.btn-term:hover {
    background-color: #30363d;
    border-color: #8b949e;
}
.btn-term.btn-danger {
    color: #f85149;
    border-color: rgba(248, 81, 73, 0.4);
    background-color: rgba(248, 81, 73, 0.1);
}
.btn-term.btn-danger:hover {
    background-color: #f85149;
    color: #ffffff;
    border-color: #f85149;
}

/* Modal Stepper */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.prep-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    width: 90%;
    max-width: 540px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.prep-header {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
}

.spinner-ring {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--bg-main);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--accent-blue);
    transition: width 0.4s ease;
}

.progress-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.steps-checklist {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    font-size: 0.9rem;
}

.step-item {
    color: var(--text-muted);
    transition: color 0.3s;
}

.step-item.active {
    color: var(--accent-blue);
    font-weight: 600;
}

.step-item.completed {
    color: var(--accent-green);
}

/* Terminal View */
.terminal-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: #000;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.terminal-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.pulse-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--accent-green);
    border-radius: 50%;
    margin-right: 0.4rem;
    box-shadow: 0 0 8px var(--accent-green);
}

.pipe { margin: 0 0.5rem; color: var(--border-color); }

.btn-term {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.3rem 0.7rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    margin-left: 0.4rem;
}
.btn-term:hover { background-color: var(--bg-card-hover); }
.btn-danger { color: var(--accent-red); border-color: rgba(248, 81, 73, 0.4); }
.btn-danger:hover { background-color: rgba(248, 81, 73, 0.2); }

.quick-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background-color: #12161c;
    border-bottom: 1px solid #21262d;
    overflow-x: auto;
}

.quick-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    white-space: nowrap;
}

.pill {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--accent-blue);
    padding: 0.2rem 0.6rem;
    border-radius: 14px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    cursor: pointer;
    white-space: nowrap;
}
.pill:hover { background-color: #21262d; }

.xterm-mount {
    flex: 1;
    min-height: 420px;
    padding: 0.5rem;
}

.clickable {
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}
.clickable:hover {
    border-color: var(--accent-blue);
    background-color: var(--bg-card-hover);
}

.ai-prompt-bar {
    background-color: #12161c;
    border-top: 1px solid #21262d;
    padding: 0.75rem 1rem;
}

.ai-input-wrapper {
    display: flex;
    align-items: center;
    background-color: #0a0d12;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.25rem 0.5rem;
    transition: border-color 0.2s;
}

.ai-input-wrapper:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.ai-input {
    background-color: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: 0.55rem 0.75rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ai-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.ai-input-wrapper .ai-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.5rem 0.4rem;
    box-shadow: none;
}

.ai-input::placeholder {
    color: #484f58;
}

/* Grandezza Maggiore e Numeri Grandi per Campo OTP */
.otp-input-large {
    width: 100%;
    height: 64px;
    font-size: 2.2rem !important;
    font-weight: 800 !important;
    letter-spacing: 16px !important;
    text-align: center !important;
    color: #58a6ff !important;
    background: #0d1117 !important;
    border: 2px solid #388bfd !important;
    border-radius: 12px !important;
    box-shadow: inset 0 2px 6px rgba(0,0,0,0.6), 0 0 12px rgba(56, 139, 253, 0.25);
    box-sizing: border-box;
    transition: all 0.25s ease;
}

.otp-input-large:focus {
    border-color: #58a6ff !important;
    box-shadow: 0 0 18px rgba(88, 166, 255, 0.6);
    outline: none;
}

/* Stili Tabella Utenti */
.users-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.8rem;
    font-size: 0.85rem;
}

.users-table th, .users-table td {
    padding: 0.7rem 0.8rem;
    text-align: left;
    border-bottom: 1px solid #30363d;
}

.users-table th {
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
}

/* Navigation Tabs in Navbar */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-tab {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 0.45rem 0.9rem;
    border-radius: 6px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.nav-tab:hover {
    color: var(--text-primary);
    background-color: var(--bg-card-hover);
}

.nav-tab.active {
    background-color: #21262d;
    border-color: #388bfd;
    color: #58a6ff;
}

/* Pagina Unica Gestione Operatori Grid */
.operators-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.page-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.card-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.card-section-header h3 {
    font-size: 1.1rem;
    margin: 0;
}