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

:root {
    --bg: #f0f4f8;
    --card: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --muted: #64748b;
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --primary-light: #e0f2fe;
    --accent: #06b6d4;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --green: #16a34a;
    --red: #dc2626;
    --gray: #64748b;
    --nav-bg: #0f172a;
    --nav-text: #cbd5e1;
    --nav-active: #38bdf8;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.04);
    --radius: 8px;
}

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

/* ===== NAVIGATION ===== */

nav {
    background: var(--nav-bg);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: #fff;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.nav-brand strong {
    color: var(--nav-active);
}

.nav-logo {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    object-fit: cover;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-links a {
    color: var(--nav-text);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    transition: all 0.15s ease;
}

.nav-links a:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.nav-links a.active {
    color: var(--nav-active);
    background: rgba(56,189,248,0.1);
}

.nav-logout {
    background: none;
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--nav-text);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    margin-left: 0.5rem;
    transition: all 0.15s ease;
}

.nav-logout:hover {
    color: #fff;
    border-color: rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.06);
}

/* ===== MAIN CONTENT ===== */

main {
    max-width: 1040px;
    margin: 1.75rem auto;
    padding: 0 1.25rem;
}

h1 { margin-bottom: 1rem; font-size: 1.5rem; font-weight: 700; color: var(--text); }
h2 { margin-bottom: 0.75rem; font-size: 1.2rem; font-weight: 600; }

.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.header-row h1 { margin-bottom: 0; }

.header-row .btn + .btn { margin-left: 0.5rem; }

/* ===== TABLE ===== */

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

th, td { padding: 0.75rem 1rem; text-align: left; }

th {
    background: #f8fafc;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    border-bottom: 2px solid var(--border);
}

td { border-top: 1px solid var(--border); }

tbody tr:hover { background: #f8fafc; }

.disabled-row { opacity: 0.45; }

code {
    background: #f1f5f9;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-size: 0.88em;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}

/* ===== BADGES ===== */

.badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-green { background: #dcfce7; color: var(--green); }
.badge-red { background: #fee2e2; color: var(--red); }
.badge-gray { background: #f1f5f9; color: var(--gray); }

/* ===== BUTTONS ===== */

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    line-height: 1.4;
    transition: all 0.15s ease;
}

.btn:hover { border-color: #cbd5e1; background: #f8fafc; }

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

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

.btn-danger {
    color: var(--danger);
    border-color: #fecaca;
    background: #fff5f5;
}

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

.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.82rem; }

.btn-ssh {
    background: var(--nav-bg);
    color: var(--nav-active);
    border-color: var(--nav-bg);
}

.btn-ssh:hover {
    background: #1e293b;
    color: #fff;
}

.btn-block { width: 100%; text-align: center; padding: 0.65rem 1rem; }

.btn-link {
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0;
}

.btn-link:hover { color: var(--primary); }

.inline { display: inline; }

.actions { white-space: nowrap; }
.actions form, .actions a { margin-right: 0.3rem; }

/* ===== FORMS ===== */

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    color: var(--text);
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    background: #fff;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(2,132,199,0.15);
}

.form-group small {
    display: block;
    margin-top: 0.35rem;
    color: var(--muted);
    font-size: 0.82rem;
}

.form-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }

.form-fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    background: #fafbfc;
}

.form-fieldset legend {
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0 0.5rem;
    color: var(--text);
}

.form-check label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

/* ===== LOGIN ===== */

.login-wrapper {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: var(--nav-bg);
    z-index: 200;
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: var(--card);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    text-align: center;
}

.login-logo img {
    width: 72px;
    height: 72px;
    border-radius: 14px;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 0.25rem;
    font-size: 1.6rem;
    color: var(--nav-bg);
}

.login-box h1 strong {
    color: var(--primary);
}

.login-subtitle {
    color: var(--muted);
    font-size: 0.88rem;
    margin-bottom: 1.75rem;
}

.login-box .form-group { text-align: left; }

.login-box .btn-primary {
    margin-top: 0.5rem;
    font-size: 0.95rem;
    padding: 0.7rem 1rem;
}

/* ===== PORTAL ===== */

.portal-welcome {
    text-align: center;
    padding: 2rem 0;
}

.portal-hero {
    margin-bottom: 2.5rem;
}

.portal-logo {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    margin-bottom: 1rem;
}

.portal-hero h1 {
    font-size: 1.5rem;
    margin-bottom: 0.35rem;
}

.portal-hero h1 strong {
    color: var(--primary);
}

.portal-hero p {
    color: var(--muted);
    font-size: 0.95rem;
}

.portal-tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 320px));
    gap: 1.25rem;
    justify-content: center;
}

.portal-tool-card {
    display: block;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.portal-tool-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.portal-tool-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
    color: var(--text);
}

.portal-tool-card p {
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* ===== SETTINGS ===== */

.settings-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    max-width: 600px;
}

.settings-card h2 {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
}

.settings-desc {
    color: var(--muted);
    font-size: 0.88rem;
    margin-bottom: 1.5rem;
}

.form-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.25rem 0;
}

/* ===== FLASH MESSAGES ===== */

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-left: 4px solid transparent;
}

.flash-success {
    background: #dcfce7;
    color: var(--green);
    border-left-color: var(--green);
}

.flash-error {
    background: #fee2e2;
    color: var(--red);
    border-left-color: var(--red);
}

/* ===== STATUS / CARDS ===== */

.status-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.empty {
    color: var(--muted);
    padding: 3rem 0;
    text-align: center;
    font-size: 0.95rem;
}

.empty a { color: var(--primary); }

.footer-actions { margin-top: 1.5rem; }

/* ===== CONNECTION INFO ===== */

.btn-connect-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid var(--primary);
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.7rem;
    font-weight: 700;
    cursor: pointer;
    margin-left: 0.4rem;
    vertical-align: middle;
    transition: all 0.15s ease;
}

.btn-connect-info:hover {
    background: var(--primary);
    color: #fff;
}

.connect-info td {
    padding: 0 !important;
    border-top: none !important;
}

.connect-box {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
    padding: 1.25rem 1.5rem;
    margin: 0 0.5rem 0.75rem;
}

.connect-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.connect-header h4 {
    font-size: 0.9rem;
    color: var(--text);
    font-weight: 600;
    margin: 0;
}

.connect-backend {
    font-size: 0.78rem;
    color: var(--muted);
    background: #e2e8f0;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

/* Tabs */
.connect-tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 2px solid var(--border);
    margin-bottom: 1rem;
    padding-bottom: 0;
}

.tab-btn {
    padding: 0.45rem 0.85rem;
    border: none;
    background: none;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.15s ease;
}

.tab-btn:hover {
    color: var(--text);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-desc {
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 0.75rem;
}

.tab-note {
    font-size: 0.78rem;
    color: var(--muted);
    margin-top: 0.75rem;
    font-style: italic;
}

.tab-note code {
    font-style: normal;
}

/* Copy groups */
.copy-group {
    margin-bottom: 0.6rem;
}

.copy-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.copy-row {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.copy-value {
    flex: 1;
    display: block;
    background: var(--nav-bg);
    color: #e2e8f0;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 0.82rem;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
    word-break: break-all;
    line-height: 1.5;
    margin: 0;
    white-space: pre-wrap;
}

.config-block {
    font-size: 0.8rem;
    line-height: 1.6;
}

.btn-copy {
    padding: 0.5rem 0.65rem;
    border: none;
    background: #334155;
    color: #94a3b8;
    cursor: pointer;
    font-size: 0.9rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    transition: all 0.15s ease;
    min-width: 36px;
}

.btn-copy:hover {
    background: #475569;
    color: #fff;
}

.btn-copy.copied {
    background: var(--green);
    color: #fff;
}

/* Config tables (PuTTY, WinSCP, etc.) */
.config-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: none;
    border: 1px solid var(--border);
}

.config-table th {
    background: #eef2f7;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--primary);
    padding: 0.45rem 0.75rem;
    text-align: left;
    border-bottom: none;
}

.config-table td {
    padding: 0.4rem 0.75rem;
    border-top: 1px solid #f1f5f9;
    vertical-align: middle;
}

.config-table td:first-child {
    font-weight: 500;
    color: var(--muted);
    width: 40%;
    font-size: 0.82rem;
}

.copy-val {
    cursor: pointer;
    background: var(--nav-bg);
    color: #e2e8f0;
    padding: 0.15rem 0.45rem;
    border-radius: 3px;
    font-size: 0.82rem;
    transition: all 0.15s ease;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}

.copy-val:hover {
    background: var(--primary);
    color: #fff;
}

.copied-flash {
    background: var(--green) !important;
    color: #fff !important;
    transition: background 0.1s ease;
}

/* ===== WEB SSH TERMINAL ===== */

.webssh-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 56px - 3.5rem);
}

.webssh-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.webssh-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.webssh-title h1 { margin: 0; }

.webssh-target {
    font-size: 0.85rem;
    color: var(--nav-active);
    background: var(--nav-bg);
    padding: 0.2rem 0.65rem;
    border-radius: 4px;
    font-family: 'SF Mono', 'Cascadia Code', monospace;
}

.webssh-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.webssh-status {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.25rem 0.65rem;
    border-radius: 9999px;
}

.status-on {
    background: #dcfce7;
    color: var(--green);
}

.status-off {
    background: #f1f5f9;
    color: var(--gray);
}

.webssh-login {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.webssh-login-card {
    width: 100%;
    max-width: 380px;
    background: var(--card);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

.webssh-login-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.webssh-login-info {
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 1.25rem;
}

.webssh-terminal {
    flex: 1;
    background: #0f172a;
    border-radius: var(--radius);
    padding: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.webssh-terminal #terminal {
    height: 100%;
}

/* ===== METRICS ===== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
    box-shadow: var(--shadow);
    border-top: 3px solid var(--primary);
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 0.35rem;
}

.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.chart-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    font-size: 0.82rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.connection-status {
    text-align: center;
    padding: 0.45rem;
    font-size: 0.8rem;
    border-radius: 6px;
    margin-top: 1rem;
    color: var(--muted);
    font-weight: 500;
}

.connection-status.connected {
    color: var(--green);
    background: #dcfce7;
}

.connection-status.disconnected {
    color: var(--red);
    background: #fee2e2;
}

/* ===== REPORT ===== */

.range-selector {
    display: flex;
    gap: 0.35rem;
}

.range-btn {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--card);
    color: var(--text);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    transition: all 0.15s ease;
}

.range-btn:hover { border-color: var(--primary); color: var(--primary); }

.range-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.report-tables {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ===== FOOTER ===== */

.app-footer {
    text-align: center;
    padding: 1.25rem 1rem;
    color: var(--muted);
    font-size: 0.78rem;
    border-top: 1px solid var(--border);
    margin-top: 3rem;
    letter-spacing: 0.02em;
}

.app-footer span {
    font-weight: 600;
    color: var(--text);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
    nav {
        padding: 0 1rem;
        height: auto;
        flex-wrap: wrap;
        gap: 0.5rem;
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
    }

    .nav-links { gap: 0.15rem; }
    .nav-links a { font-size: 0.82rem; padding: 0.35rem 0.5rem; }

    .charts-row, .report-tables { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    main { padding: 0 0.75rem; margin-top: 1.25rem; }

    .header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}