/* ===== Global Styles ===== */
:root {
    --primary-color: #4e73df;
    --primary-hover: #2e59d9;
    --secondary-color: #6c757d;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
    --body-bg: #f8f9fc;
    --text-color: #2d3748;
    --card-bg: #ffffff;
    --header-bg: #1a1a2e;
    --footer-bg: #1a1a2e;
    --border-color: #e2e8f0;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    
    /* Dark theme colors */
    --dark-bg: #1a202c;
    --dark-card: #2d3748;
    --dark-text: #e2e8f0;
    --dark-border: #4a5568;
}

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--body-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

/* ===== Top Bar ===== */
.top-bar {
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.social-icons a {
    display: inline-block;
    transition: transform 0.3s ease;
}

.social-icons a:hover {
    transform: translateY(-2px);
}

/* ===== Navigation ===== */
.navbar {
    padding: 0.8rem 0;
    background-color: var(--dark-color) !important;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-nav .nav-link {
    font-weight: 600;
    padding: 0.5rem 1rem;
    margin: 0 0.2rem;
    border-radius: 0.25rem;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    background-color: rgba(255,255,255,0.1);
}

.dropdown-menu {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
    border-radius: 0.5rem;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.dropdown-item {
    padding: 0.5rem 1.5rem;
    font-weight: 500;
}

/* ===== Sidebar ===== */
.sidebar {
    background-color: #1a1d20;
    min-height: calc(100vh - 73px);
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.7);
    padding: 0.6rem 1rem;
    margin-bottom: 0.2rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.1);
    color: #fff;
    padding-left: 1.25rem;
}

.sidebar .nav-link i {
    width: 20px;
    text-align: center;
    margin-right: 0.5rem;
}

/* Server Status Card */
.server-status {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
    position: relative;
}

.server-status:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: inherit;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    70% {
        transform: scale(2.5);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.server-status.online {
    background-color: var(--success-color);
}

.server-status.offline {
    background-color: var(--danger-color);
}

/* Theme Toggle */
#themeToggle {
    border: none;
    background: none;
    color: rgba(255, 255, 255, 0.85);
    padding: 0.5rem;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

#themeToggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

#themeToggle i {
    font-size: 1.1rem;
}

/* ===== Calculator Styles ===== */
.calculator-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.calculator-card {
    background: var(--card-bg);
    border-radius: 0.5rem;
    box-shadow: var(--box-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.calculator-title {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-weight: 700;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.calculator-form .form-group {
    margin-bottom: 1.5rem;
}

.calculator-form label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.calculator-form .input-group-text {
    background-color: var(--light-color);
    border-color: var(--border-color);
    color: var(--text-color);
}

.calculator-form .form-control {
    border-color: var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
}

.calculator-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(78, 115, 223, 0.25);
}

.calculator-table {
    width: 100%;
    margin-top: 1.5rem;
    background: var(--card-bg);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.calculator-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    padding: 0.75rem;
    text-align: center;
    vertical-align: middle;
}

.calculator-table td {
    padding: 0.75rem;
    vertical-align: middle;
    text-align: center;
    border-color: var(--border-color);
}

.calculator-table tbody tr:nth-child(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

.calculator-table tbody tr:hover {
    background-color: rgba(78, 115, 223, 0.1);
    transition: background-color 0.2s ease;
}

.calculator-note {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-style: italic;
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .calculator-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

/* Dark theme adjustments */
[data-bs-theme="dark"] .calculator-card,
[data-bs-theme="dark"] .calculator-table {
    background: var(--dark-card);
    border-color: var(--dark-border);
}

[data-bs-theme="dark"] .calculator-table tbody tr:nth-child(odd) {
    background-color: rgba(255, 255, 255, 0.05);
}

[data-bs-theme="dark"] .calculator-form .form-control {
    background-color: var(--dark-card);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

[data-bs-theme="dark"] .calculator-form .input-group-text {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

[data-bs-theme="dark"] .calculator-form label {
    color: var(--dark-text);
}

/* Dark Mode Styles */
[data-bs-theme="dark"] {
    --body-bg: #0f172a;
    --text-color: #e2e8f0;
    --card-bg: #1e293b;
    --border-color: #334155;
    --header-bg: #0f172a;
    --dark-color: #1e293b;
}

[data-bs-theme="dark"] .top-bar {
    background-color: var(--header-bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

[data-bs-theme="dark"] .navbar-toggler {
    color: var(--text-color);
}

[data-bs-theme="dark"] .form-control {
    background-color: #1e293b;
    border-color: #334155;
    color: #e2e8f0;
}

[data-bs-theme="dark"] .form-control:focus {
    background-color: #1e293b;
    border-color: #4f46e5;
    color: #e2e8f0;
    box-shadow: 0 0 0 0.25rem rgba(79, 70, 229, 0.25);
}

/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .navbar-collapse {
        padding: 1rem;
        margin: 0.5rem -1rem;
        background-color: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 0.5rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }
    
    .navbar-nav {
        margin-top: 1rem;
    }
    
    .nav-item {
        margin-bottom: 0.25rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        margin: 0.125rem 0;
        border-radius: 0.25rem;
    }
    
    .dropdown-menu {
        position: static !important;
        transform: none !important;
        width: 100%;
        margin: 0.25rem 0 0 1rem;
        box-shadow: none;
        background-color: rgba(15, 23, 42, 0.8);
        border: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .dropdown-item {
        color: rgba(255, 255, 255, 0.85);
        padding: 0.5rem 1.25rem;
    }
    
    .dropdown-item:hover,
    .dropdown-item:focus {
        background-color: rgba(79, 70, 229, 0.2);
        color: white;
    }
    
    .server-status-bar {
        position: relative;
        padding: 0.25rem 0;
    }
    
    .server-status-bar .d-flex {
        flex-wrap: wrap;
    }
    
    .server-status-bar .me-4 {
        margin-right: 0.5rem !important;
        margin-bottom: 0.25rem;
    }
    
    .server-status-bar .ms-auto {
        margin-left: auto !important;
    }
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #6f42c1 0%, #0dcaf0 100%);
    background-clip: padding-box;
    -webkit-background-clip: padding-box;
    color: white;
    padding: 5rem 0;
    margin-bottom: 3rem;
    border-radius: 0.5rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('/assets/images/pattern.png') repeat;
    opacity: 0.1;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* Cards */
.card {
    border: none;
    border-radius: 0.5rem;
    overflow: hidden;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
}

.card-img-top {
    height: 180px;
    object-fit: cover;
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #5a32a3;
    border-color: #5a32a3;
    transform: translateY(-2px);
}

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

/* ===== Footer ===== */
.footer {
    background-color: #1a1d20;
    padding: 3rem 0 1.5rem;
    color: rgba(255,255,255,0.7);
}

.footer h5 {
    color: #fff;
    margin-bottom: 1.5rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer h5::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background: var(--primary-color);
}

.footer ul li {
    margin-bottom: 0.75rem;
}

.footer a {
    color: rgba(255,255,255,0.7);
    transition: all 0.3s ease;
}

.footer a:hover {
    color: #fff;
    padding-left: 5px;
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    margin-top: 2rem;
}

/* Back to Top Button */
#backToTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: none;
    z-index: 99;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-align: center;
    line-height: 1;
    padding: 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* ===== Responsive Styles ===== */
@media (max-width: 991.98px) {
    .sidebar {
        min-height: auto;
        margin-bottom: 2rem;
    }
    
    .main-content {
        padding: 1.5rem 0;
    }
}

@media (max-width: 767.98px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .navbar-brand {
        font-size: 1.5rem;
    }
    
    .footer {
        text-align: center;
    }
    
    .footer h5::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-bottom {
        text-align: center;
    }
    
    .footer-bottom .text-md-end {
        text-align: center !important;
        margin-top: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Dark Mode Toggle */
[data-bs-theme="dark"] {
    color-scheme: dark;
    --bs-body-color: #dee2e6;
    --bs-body-bg: #212529;
    --bs-border-color: #495057;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}