/* ===== CSS Custom Properties ===== */
:root {
  /* Colors — neutral professional palette */
  --color-bg: #f5f6fa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-success: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
}
body, html {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}
h1, h2, h3, h4, p, ul {
    margin: 0;
    padding: 0;
}
ul {
    list-style: none;
}
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--color-primary-hover);
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.app-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}
.logo:hover {
    color: var(--color-primary);
}
.user-nav {
    display: flex;
    align-items: center;
    gap: 16px;
}
.user-name {
    font-weight: 500;
    color: var(--color-text-secondary);
}
.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
}
.btn-outline {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}
.btn-outline:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-text-secondary);
}
.main-content {
    padding: 32px 20px;
    min-height: calc(100vh - 140px);
}
.app-footer {
    padding: 24px 20px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ===== Components ===== */
/* Cards */
.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
    overflow: hidden;
}
.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    background-color: rgba(249, 250, 251, 0.5);
}
.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}
.card-body {
    padding: 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.875rem;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    font-family: var(--font-family);
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.btn-sm {
    padding: 6px 12px;
    font-size: 0.8125rem;
}
.btn-block {
    display: block;
    width: 100%;
}
.btn-primary {
    background-color: var(--color-primary);
    color: white;
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    color: white;
}
.btn-secondary {
    background-color: white;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-bg);
}
.btn-danger {
    background-color: var(--color-surface);
    color: var(--color-danger);
    border-color: var(--color-danger);
}
.btn-danger:hover:not(:disabled) {
    background-color: var(--color-danger);
    color: white;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}
label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text);
}
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 0.9375rem;
    transition: border-color 0.2s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}



/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.875rem;
}
.alert-danger {
    background-color: rgba(220, 38, 38, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

/* Login Page */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
}
.login-card {
    width: 100%;
    max-width: 400px;
    padding: 32px;
}
.login-header {
    text-align: center;
    margin-bottom: 24px;
}
.logo-large {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}
.subtitle {
    color: var(--color-text-secondary);
}

/* Dashboard VM Grid */
.dashboard-header {
    margin-bottom: 24px;
}
.page-title {
    font-size: 1.5rem;
    font-weight: 700;
}
.vm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.vm-card {
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.2s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}
.vm-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -4px rgba(0,0,0,0.05);
    transform: translateY(-2px);
    border-color: #d1d5db;
}

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

.vm-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.vm-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    color: var(--color-text);
}

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

.vm-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.vm-spec-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Colored Icons */
.spec-icon { 
    width: 36px; height: 36px; border-radius: 8px; 
    display: flex; align-items: center; justify-content: center; 
}
.icon-cpu { background: #eff6ff; color: #2563eb; }
.icon-ram { background: #ecfdf5; color: #059669; }
.icon-disk { background: #f5f3ff; color: #7c3aed; }
.icon-traffic { background: #fffbeb; color: #d97706; }

.vm-footer {
    border-top: 1px solid var(--color-border);
    padding-top: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.paid-until {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.paid-until::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #9ca3af;
}

.paid-until.text-warning::before { background: #f59e0b; }
.paid-until.text-danger::before { background: #ef4444; }

/* VM Detail Page */
.page-header {
    margin-bottom: 32px;
}
.back-link {
    display: inline-block;
    margin-bottom: 12px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}
.vm-title-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.spec-list li {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}
.spec-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.spec-label {
    color: var(--color-text-secondary);
    font-weight: 500;
}
.spec-value {
    font-weight: 600;
}

/* Resource Bars */
.resource-item {
    margin-bottom: 20px;
}
.resource-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 500;
}


/* Action Buttons */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* Utilities */
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 15px; }
.mb-4 { margin-bottom: 16px; }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.empty-state {
    padding: 40px;
    text-align: center;
    color: var(--color-text-secondary);
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s ease;
}
.toast.show {
    opacity: 1;
    transform: translateY(0);
}
.toast-success { background-color: var(--color-success); }
.toast-error { background-color: var(--color-danger); }

/* Admin Panel Styles */
.admin-form {
    padding: 20px;
}

/* Column flex layout */
.flex-col-gap { display: flex; flex-direction: column; gap: 1.5rem; }

/* Table section title (admin) */
.table-header-title {
    padding: 1rem 1.5rem;
    margin: 0;
    border-bottom: 1px solid #e2e8f0;
    font-size: 1.25rem;
    font-weight: 600;
}

/* Form rows for admin */
.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

/* Chart title */
.chart-title {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Card header with flex */
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Addon item in billing details */
.addon-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}
.addon-row-label {
    display: flex;
    align-items: center;
    color: var(--color-text);
    font-weight: 500;
}
.addon-row-label svg { margin-right: 8px; color: var(--color-primary); }
.addon-row-price { font-weight: 600; color: var(--color-text-secondary); }

/* Modern VM Detail Layout Styles */
.layout-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 992px) {
    .layout-grid {
        grid-template-columns: 1fr;
    }
}

.spec-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0;
    margin: 0;
}
.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px dashed var(--color-border);
}
.spec-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.spec-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}
.spec-icon {
    opacity: 0.7;
}
.spec-value {
    font-weight: 600;
    font-size: 0.9375rem;
}

.resource-item {
    margin-bottom: 1.5rem;
}
.resource-item:last-child {
    margin-bottom: 0;
}
.resource-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}
.resource-header span:first-child {
    font-weight: 500;
    color: var(--color-text-secondary);
}
.resource-header span:last-child {
    font-weight: 600;
}
.progress-track {
    background-color: var(--color-border);
    border-radius: 999px;
    height: 8px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    border-radius: 999px;
    transition: width 0.5s ease-out;
}
.progress-blue { background-color: var(--color-primary); }
.progress-green { background-color: var(--color-success); }
.progress-orange { background-color: var(--color-warning); }

.power-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.btn-soft-danger {
    background-color: #fee2e2;
    color: #dc2626;
    border: 1px solid #fca5a5;
}
.btn-soft-danger:hover {
    background-color: #fca5a5;
    color: #991b1b;
}

.btn-warning {
    background-color: transparent;
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}
.btn-warning:hover {
    background-color: var(--color-warning);
    color: white;
}

.btn-dark {
    background-color: #334155;
    color: white;
}
.btn-dark:hover {
    background-color: #1e293b;
}
.btn-success {
    background-color: var(--color-success);
    color: white;
}

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

.status-badge {
    background-color: #f1f5f9;
    color: var(--color-text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.status-running {
    background-color: #d1fae5;
    color: #065f46;
}
.status-running .status-dot {
    background-color: var(--color-success);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}
.status-stopped {
    background-color: #fee2e2;
    color: #991b1b;
}
.status-stopped .status-dot {
    background-color: var(--color-danger);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}
.status-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-text-secondary);
    border-radius: 50%;
}
.status-transitioning {
    background-color: #fef3c7;
    color: #92400e;
}
.status-transitioning .status-dot {
    background-color: var(--color-warning);
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

/* Admin Plans Specific Styles */
.plan-name { font-weight: 600; color: var(--color-text); font-size: 0.9375rem; display: block; }
.plan-price { font-weight: 700; color: var(--color-primary); font-size: 1.125rem; }
.price-period { color: var(--color-text-secondary); font-size: 0.75rem; font-weight: 400; }
.resource-badges { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.25rem 0.5rem; border-radius: 4px; font-size: 0.75rem; font-weight: 500; background: #f1f5f9; color: #475569; border: 1px solid #e2e8f0; }
.badge svg { width: 12px; height: 12px; color: var(--color-text-secondary); }
.addon-capsule { display: inline-flex; flex-direction: column; background: #f8fafc; border: 1px dashed #cbd5e1; padding: 0.25rem 0.5rem; border-radius: 4px; font-size: 0.7rem; line-height: 1.2; color: var(--color-text-secondary); margin-right: 0.25rem; margin-bottom: 0.25rem; }
.addon-capsule span.val { font-weight: 600; color: var(--color-text); }

/* ===== Modern Admin Table Styles ===== */
.modern-table-container {
    background: #ffffff;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    overflow: hidden;
    margin-bottom: 2rem;
}

.modern-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.modern-table th {
    background-color: #f8fafc;
    padding: 1rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #e2e8f0;
    white-space: nowrap;
}

.modern-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    vertical-align: middle;
}

.modern-table tr:last-child td {
    border-bottom: none;
}

.modern-table tr:hover td {
    background-color: #f8fafc;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header .page-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.025em;
}

/* Custom Buttons (Modern) */
.btn-modern {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1.5;
}

.btn-modern-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.5);
}

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

.btn-modern-outline {
    background-color: white;
    color: #0f172a;
    border: 1px solid #e2e8f0;
}

.btn-modern-outline:hover {
    background-color: #f1f5f9;
}

.btn-modern-danger {
    background-color: #fee2e2;
    color: #dc2626;
    border: 1px solid #fca5a5;
}

.btn-modern-danger:hover {
    background-color: #fca5a5;
    color: #991b1b;
}

/* VNC Console Styles */
body.vnc-page, html.vnc-page {
    margin: 0;
    padding: 0;
    height: 100vh;
    width: 100vw;
    background-color: #111;
    color: #fff;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.vnc-toolbar {
    background-color: #222;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
    flex-shrink: 0;
}
.vnc-title {
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.vnc-status {
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 12px;
    background: #444;
}
.vnc-status.connected { background: var(--color-success); }
.vnc-status.disconnected { background: var(--color-danger); }
.vnc-status.connecting { background: var(--color-warning); }

.vnc-actions {
    display: flex;
    gap: 10px;
}
.btn-vnc-action {
    background: #444;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}
.btn-vnc-action:hover { background: #555; }
.btn-vnc-action.danger { background: var(--color-danger); }
.btn-vnc-action.danger:hover { background: var(--color-danger-hover); }

#vnc-container {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #000;
    position: relative;
}
#vnc-container canvas {
    outline: none;
}
.vnc-loading-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0,0,0,0.8);
    z-index: 10;
}
.vnc-spinner {
    border: 4px solid rgba(255,255,255,0.1);
    width: 40px; height: 40px;
    border-radius: 50%;
    border-left-color: var(--color-primary);
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }