:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --rx-color: #10b981;
    --tx-color: #f59e0b;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 0% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Nav Styles */
.glass-nav {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

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

.brand {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, #818cf8, #6366f1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
}

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

.card-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
}

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

.stat-item {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 0.75rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.125rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
}

.rx-text { color: var(--rx-color); }
.tx-text { color: var(--tx-color); }

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

/* Footer */
.glass-footer {
    margin-top: 4rem;
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--glass-border);
}

@keyframes pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
    100% { opacity: 1; transform: scale(1); }
}

/* Period Selector */
.period-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 0.4rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
    outline: none;
    cursor: pointer;
}

.period-select:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}
/* Global Form Controls */
.form-control {
    width: 100%;
    padding: 0.75rem;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--glass-border);
    border-radius: 0.5rem;
    color: var(--text-main);
    outline: none;
    transition: border-color 0.3s, background 0.3s;
}

.form-control:focus {
    border-color: var(--primary-color);
    background: rgba(30, 41, 59, 1);
}

/* Fix for Select Dropdown Options */
select.form-control option {
    background-color: #1e293b;
    color: #f8fafc;
}

/* Tabs System */
.tabs-container {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.25rem;
    border-radius: 0.75rem;
    border: 1px solid var(--glass-border);
}

.tab-btn {
    padding: 0.5rem 1.25rem;
    border-radius: 0.6rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.tab-btn:hover:not(.active) {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.onu-info-col {
    display: none;
}

.tab-content {
    display: none;
    animation: fadeInTab 0.4s ease-out;
}

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

@keyframes fadeInTab {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* OLT Monitoring Styles */
.olt-card {
    display: flex !important;
    flex-direction: column;
    min-height: 250px;
    height: 100%;
}

.olt-stats-wrapper {
    margin-top: auto;
    padding-top: 1.5rem;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .olt-dashboard h1 {
        font-size: 1.5rem !important;
    }

    .hide-mobile {
        display: none !important;
    }

    .card-v2-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .status-badges {
        align-items: flex-start;
        width: 100%;
    }

    .olt-card {
        padding: 1.25rem !important;
        width: 100%;
        overflow: hidden;
    }

    .olt-card p {
        font-size: 0.8rem !important;
    }

    .olt-mini-label {
        font-size: 0.55rem !important;
    }

    .olt-mini-value {
        font-size: 1.1rem !important;
    }

    .onu-info-col {
        display: table-cell !important;
    }

    .onu-desktop-only {
        display: none !important;
    }

    .onu-table {
        min-width: 0 !important; /* Allow collapse */
    }

    .onu-table td, .onu-table th {
        padding: 0.75rem 0.5rem !important;
    }

    /* Stack admin header */
    .admin-header {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 1.5rem;
    }

    .admin-actions {
        width: 100%;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .admin-actions .btn-add, 
    .admin-actions .tab-btn {
        flex: 1;
        min-width: calc(50% - 0.5rem);
        justify-content: center;
        font-size: 0.75rem;
        padding: 0.5rem;
    }

    /* Router header stacking */
    .router-header {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 1rem;
    }

    .router-info-bar {
        width: 100%;
        justify-content: space-between;
    }

    /* Iface row in manage router */
    .iface-row {
        grid-template-columns: 1fr !important;
        gap: 0.5rem !important;
    }

    .iface-row .form-control {
        order: 2;
    }
    
    .iface-row .btn-remove {
        position: absolute;
        right: 1rem;
        top: 1rem;
    }

    .iface-row {
        position: relative;
    }
}

/* Table Responsive Wrapper */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 1rem;
}

.table-responsive table {
    width: 100%;
    min-width: 600px; /* Force scroll on small screens */
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 0.5rem;
    color: #fff;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

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

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

/* Common Admin Styles */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.6rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    font-family: inherit;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-test {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.btn-test:hover {
    background: rgba(16, 185, 129, 0.2);
    transform: translateY(-2px);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Custom Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.6);
}

/* V2 Minimalist Cards */
.mini-card-v2 {
    cursor: pointer;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.8));
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1.25rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mini-card-v2:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.3);
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 1));
}

.card-v2-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-title-v2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
}

.status-badges {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
}

.badge {
    padding: 0.25rem 0.6rem;
    border-radius: 0.5rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.rate-badge {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.sfp-badge-v2 {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
    min-width: 80px;
    text-align: center;
}

.sfp-badge-v2.non-sfp {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* No Traffic Alert */
.no-traffic-alert {
    border-color: #ef4444 !important;
    box-shadow: 0 0 20px -5px rgba(239, 68, 68, 0.4) !important;
    animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
    0% { box-shadow: 0 0 20px -5px rgba(239, 68, 68, 0.4); }
    50% { box-shadow: 0 0 30px 2px rgba(239, 68, 68, 0.6); }
    100% { box-shadow: 0 0 20px -5px rgba(239, 68, 68, 0.4); }
}

.stats-container-v2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-box-v2 {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label-v2 {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.stat-value-v2 {
    font-size: 1.25rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.025em;
}

.download .stat-value-v2 { color: var(--rx-color); }
.upload .stat-value-v2 { color: var(--tx-color); }
.download .stat-label-v2 i { color: var(--rx-color); }
.upload .stat-label-v2 i { color: var(--tx-color); }

/* Modal Styles */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 2rem;
}

@media (max-width: 768px) {
    .modal-overlay {
        padding: 0 !important;
    }

    .modal-content {
        width: 100% !important;
        height: 100vh !important;
        margin: 0 !important;
        border-radius: 0 !important;
    }

    .modal-header {
        padding: 1rem !important;
    }

    .modal-body {
        padding: 1rem !important;
    }

    .chart-container-large {
        height: 300px !important;
    }

    .history-charts-grid {
        grid-template-columns: 1fr !important;
    }

    .stat-box-v2 .stat-value-v2 {
        font-size: 1.1rem !important;
    }

    .stat-label-v2 {
        font-size: 0.65rem !important;
    }
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: 0.3s;
}

.close-btn:hover { background: #ef4444; }

.modal-body {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* Fallback for all tables */
@media (max-width: 768px) {
    table {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

.chart-container-large {
    height: 500px;
    width: 100%;
}