@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #131a2b;
    --bg-card: #18233c;
    --border-color: #24355a;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-accent: #38bdf8;
    --color-accent-glow: rgba(56, 189, 248, 0.15);
    --color-purple: #a855f7;
    
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.1);
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* --- Layout --- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2.5rem;
    padding-left: 0.5rem;
}

.logo span {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
    color: var(--text-secondary);
    border-radius: 8px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-item.active a,
.nav-item a:hover {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.nav-item.active a {
    border-left: 3px solid var(--color-accent);
    background-color: var(--color-accent-glow);
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.user-profile {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    font-size: 0.85rem;
}

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

.user-role {
    color: var(--text-muted);
}

.logout-btn {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: color var(--transition-fast);
}

.logout-btn:hover {
    color: var(--color-danger);
}

/* Main Content */
.main-content {
    margin-left: 260px;
    flex-grow: 1;
    padding: 2.5rem;
    max-width: 1600px;
    width: calc(100% - 260px);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.page-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.page-title p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Cards & Grid --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-icon.blue { background-color: var(--color-accent-glow); color: var(--color-accent); }
.stat-icon.green { background-color: var(--color-success-bg); color: var(--color-success); }
.stat-icon.yellow { background-color: var(--color-warning-bg); color: var(--color-warning); }
.stat-icon.red { background-color: var(--color-danger-bg); color: var(--color-danger); }

.stat-details h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 0.25rem;
}

/* --- Panels --- */
.panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.75rem;
    margin-bottom: 2rem;
}

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

.panel-title {
    font-size: 1.15rem;
    font-weight: 600;
}

/* --- Tables --- */
.table-responsive {
    overflow-x: auto;
}

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

th, td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    font-size: 0.95rem;
    vertical-align: middle;
}

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

/* --- Badges & Status --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge.active { background-color: var(--color-success-bg); color: var(--color-success); }
.badge.suspended { background-color: var(--color-warning-bg); color: var(--color-warning); }
.badge.expired { background-color: var(--color-danger-bg); color: var(--color-danger); }

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-indicator.online { background-color: var(--color-success); box-shadow: 0 0 8px var(--color-success); }
.status-indicator.offline { background-color: var(--color-danger); box-shadow: 0 0 8px var(--color-danger); }

/* --- Forms & Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-accent);
    color: #0b0f19;
}

.btn-primary:hover {
    background-color: #7dd3fc;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-card);
}

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

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

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

input, select, textarea {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    width: 100%;
    outline: none;
    transition: border-color var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--color-accent);
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* --- SVG Charts --- */
.chart-container {
    height: 300px;
    width: 100%;
    position: relative;
}

.svg-chart {
    width: 100%;
    height: 100%;
}

.chart-grid {
    stroke: #1e293b;
    stroke-width: 1;
}

.chart-line {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-area {
    fill: url(#chart-gradient);
    opacity: 0.3;
}

.chart-axis-text {
    fill: var(--text-secondary);
    font-size: 11px;
    font-family: var(--font-sans);
}

/* --- Login Page --- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1.5rem;
}

.login-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo h2 {
    font-size: 1.8rem;
    font-weight: 800;
}

.login-logo h2 span {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.login-error {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--color-danger);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* --- Error Logs Styling --- */
.error-item {
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 0;
}

.error-item:last-child {
    border-bottom: none;
}

.error-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.error-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.error-meta span.date {
    color: var(--text-muted);
}

.error-title {
    font-weight: 700;
    color: var(--color-danger);
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.error-message {
    color: var(--text-primary);
    font-family: monospace;
    background-color: var(--bg-primary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border-left: 3px solid var(--color-danger);
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-all;
    margin: 0.5rem 0;
}

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

.error-location strong {
    color: var(--text-primary);
    font-family: monospace;
}

.error-trace {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background-color: #0b1324;
    padding: 1rem;
    border-radius: 6px;
    font-family: monospace;
    overflow-x: auto;
    margin-top: 0.75rem;
    display: none;
    border: 1px solid #1e2d4a;
}

.trace-toggle {
    background: none;
    border: none;
    color: var(--color-accent);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0;
    font-family: var(--font-sans);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(11, 15, 25, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal.open .modal-content {
    transform: scale(1);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* --- Responzivita --- */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
        padding: 2rem 0.5rem;
        align-items: center;
    }
    .logo span, .nav-item span, .user-info, .sidebar-footer {
        display: none;
    }
    .logo {
        margin-bottom: 2rem;
        padding-left: 0;
    }
    .nav-item a {
        justify-content: center;
        padding: 0.75rem;
    }
    .main-content {
        margin-left: 80px;
        width: calc(100% - 80px);
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .btn {
        width: 100%;
    }
}