/* for dark theme (default), light theme overrides below */
:root {
    --primary-glow: rgba(99, 102, 241, 0.4);
    --secondary-glow: rgba(168, 85, 247, 0.4);
    --bg-color: #0f172a;
    --surface-color: rgba(30, 41, 59, 0.7);
    --surface-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --navbar-background: rgba(15, 23, 42, 0.8); /* intentionally identical, so it looks better */
    --link-color: #8b5cf6;
    --link-hover-color: #a855f7;
    --nav-link-hover-color: #fffc;
    --veryweak-anti-shadow: rgba(255, 255, 255, 0.05);
    --weak-anti-shadow: rgba(255, 255, 255, 0.2);
    --weak-shadow: rgba(0, 0, 0, 0.2);
    --half-shadow: rgba(0, 0, 0, 0.5);
    --dropdown-menu-hover-color: rgba(255, 255, 255, 0.1);
    --jumbotron-gradient1: rgba(30, 41, 59, 0.8);
    --jumbotron-gradient2: rgba(15, 23, 42, 0.9);
    --alternate-gradient1: #a855f7;
    --alternate-gradient2: #6366d1;
    --ip-color: #38bdf8;
    --footer-background-color: rgba(15, 23, 42, 0.8);
    --footer-link-color: #f8fafc;
    --footer-link-hover-color: #8b5cf6;
    --btn-primary-gradient1: #8b5cf6;
    --btn-primary-gradient2: #6366f1;
    --btn-primary-shadow: rgba(99, 102, 241, 0.4);
    --btn-primary-hover-gradient1: #7c3aed;
    --btn-primary-hover-gradient2: #4f46e5;
    --alert-danger-background: rgba(239, 68, 68, 0.3);
    --alert-danger-border: rgba(239, 68, 68, 0.2);
    --alert-danger-text-color: #fca5a5;
    --alert-warning-background: rgba(245, 158, 11, 0.3);
    --alert-warning-border-color: rgba(245, 158, 11, 0.2);
    --alert-warning-text-color: #fcd34d;
    --alert-success-background: rgba(16, 185, 129, 0.3);
    --alert-success-border-color: rgba(16, 185, 129, 0.2);
    --alert-success-text-color: #6ee7b7;
    --alert-info-background: rgba(56, 189, 248, 0.3);
    --alert-info-border-color: rgba(56, 189, 248, 0.2);
    --alert-info-text-color: #7dd3fc;
}

html[data-bs-theme="light"] {
    --primary-glow: rgba(156, 153, 14, 0.05);
    --secondary-glow: rgba(87, 170, 8, 0.05);
    --bg-color: #fefdfa;
    --surface-color: rgba(248, 245, 241, 0.7);
    --surface-border: rgba(0, 0, 0, 0.1);
    --text-primary: #070503;
    --text-secondary: #6b5c47;
    --navbar-background: rgba(15, 23, 42, 0.8); /* intentionally identical, so it looks better */
    --link-color: rgba(var(--bs-link-color-rgb), var(--bs-link-opacity, 1));
    --link-hover-color: #a855f7;
    --nav-link-hover-color: #fffc;
    --veryweak-anti-shadow: rgba(0, 0, 0, 0.05);
    --weak-anti-shadow: rgba(0, 0, 0, 0.2);
    --weak-shadow: rgba(255, 255, 255, 0.2);
    --half-shadow: rgba(255, 255, 255, 0.5);
    --dropdown-menu-hover-color: rgba(0, 0, 0, 0.1);
    --jumbotron-gradient1: rgba(225, 214, 194, 0.4);
    --jumbotron-gradient2: rgba(240, 232, 213, 0.45);
    --alternate-gradient1: #262a7b;
    --alternate-gradient2: #3966f1;
    --ip-color: #1c5e7c;
    --footer-background-color: rgba(221, 221, 221, 1);
    --footer-link-color: rgb(13, 110, 253);
    --footer-link-hover-color: rgb(10, 88, 202);
    --btn-primary-gradient1: #74a30920; /* alpha is intentionally low - almost background-color will be seen */
    --btn-primary-gradient2: #9c990e20;
    --btn-primary-shadow: rgba(99, 102, 241, 0.4);
    --btn-primary-hover-gradient1: #83c51210;
    --btn-primary-hover-gradient2: #b0b91a10;
    --alert-danger-background: rgba(239, 68, 68, 0.3);
    --alert-danger-border: rgba(239, 68, 68, 0.2);
    --alert-danger-text-color: #785252;
    --alert-warning-background: rgba(245, 158, 11, 0.3);
    --alert-warning-border-color: rgba(245, 158, 11, 0.2);
    --alert-warning-text-color: #786926;
    --alert-success-background: rgba(16, 185, 129, 0.3);
    --alert-success-border-color: rgba(16, 185, 129, 0.2);
    --alert-success-text-color: #377368;
    --alert-info-background: rgba(56, 189, 248, 0.3);
    --alert-info-border-color: rgba(56, 189, 248, 0.2);
    --alert-info-text-color: #3e667e;
}

body {
    padding-top: 5.5rem;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif;
    position: relative;
    overflow-x: hidden;
}

/* Background Glow Effect */
body::before, body::after {
    content: '';
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    animation: float 20s ease-in-out infinite;
}

body::before {
    background-color: var(--primary-glow);
    top: -200px;
    left: -200px;
}

body::after {
    background-color: var(--secondary-glow);
    bottom: -200px;
    right: -200px;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(30px, -50px); }
    66% { transform: translate(-20px, 40px); }
}

html, body {
  height: 100%;
}

/* Typography Overrides */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Navbar */
.navbar {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--surface-border);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    transition: all 0.3s ease;
    background-color: var(--navbar-background) !important; /* required to override bootstrap's "important" */
}

.navbar-brand {
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
    transition: transform 0.2s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-brand>img {
    height: 50px;
    width: auto;
    filter: drop-shadow(0 0 8px var(--weak-anti-shadow));
}

.nav-link {
    font-weight: 500;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.nav-link:hover {
    color: var(--nav-link-hover-color);
    text-shadow: 0 0 8px var(--weak-anti-shadow);
    text-decoration: underline;
}

.dropdown-menu {
    background-color: var(--surface-color);
    backdrop-filter: blur(12px);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--half-shadow);
}

.dropdown-item {
    color: var(--text-primary);
    transition: all 0.2s;
}

.dropdown-item:hover {
    background-color: var(--dropdown-menu-hover-color);
    color: var(--text-primary);
}

/* Jumbotron Replacement */
.jumbotron-replacement {
    backdrop-filter: blur(16px);
    border: 1px solid var(--surface-border);
    border-radius: 16px !important;
    box-shadow: 0 20px 40px var(--half-shadow);
    padding: 1.0rem 3rem !important;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background-image: linear-gradient(135deg, var(--jumbotron-gradient1), var(--jumbotron-gradient2));
}

.jumbotron-replacement:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px var(--half-shadow);
}

.jumbotron-replacement h1 {
    font-size: 3rem;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    background-image: linear-gradient(to right, var(--alternate-gradient1), var(--alternate-gradient2));
}

.jumbotron-replacement h3,
.jumbotron-replacement h4 {
    color: var(--text-secondary);
}

.ipv4addr, .ipv6addr {
    font-weight: 600;
    color: var(--ip-color) !important;
}

/* Wrap & Footer */
.wrap {
    padding-bottom: 100px;
}

.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 1030;
    height: auto;
    padding-top: 0.3rem;
    padding-bottom: 0.3rem;
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--surface-border);
    color: var(--text-secondary);
    background-color: var(--footer-background-color);
}

.footer a {
    text-decoration: none;
    transition: color 0.2s;
    color: var(--footer-link-color);
}

.footer a:hover {
    color: var(--footer-link-hover-color);
}

/* Icons & Features Grid */
.fa-3x {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
    background-image: linear-gradient(135deg, var(--alternate-gradient1), var(--alternate-gradient2));
}

.col-sm-4:hover .fa-3x {
    transform: scale(1.15) rotate(5deg);
}

.col-sm-4 p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Cards & Containers */
.card {
    background-color: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--weak-shadow);
}

.card-header {
    border-bottom: 1px solid var(--surface-border);
    background-color: var(--veryweak-anti-shadow);
}

/* Buttons */
.btn-primary {
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-image: linear-gradient(135deg, var(--btn-primary-gradient1), var(--btn-primary-gradient2));
    box-shadow: 0 4px 15px var(--btn-primary-shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background-image: linear-gradient(135deg, var(--btn-primary-hover-gradient1), var(--btn-primary-hover-gradient2));
    box-shadow: 0 6px 20px var(--btn-primary-shadow);
}

/* Alerts */
.alert {
    border-radius: 12px;
    border: none;
    backdrop-filter: blur(8px);
}

.alert-danger {
    background-color: var(--alert-danger-background);
    border: 1px solid var(--alert-danger-border);
    color: var(--alert-danger-text-color);
}

.alert-warning {
    background-color: var(--alert-warning-background);
    border: 1px solid var(--alert-warning-border-color);
    color: var(--alert-warning-text-color);
}

.alert-success {
    background-color: var(--alert-success-background);
    border: 1px solid var(--alert-success-border-color);
    color: var(--alert-success-text-color);
}

.alert-info {
    background-color: var(--alert-info-background);
    border: 1px solid var(--alert-info-border-color);
    color: var(--alert-info-text-color);
}

a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--link-hover-color);
    text-decoration: underline;
}

a.nav-link {
    cursor: pointer;
}

a.nav-link:hover {
    color: var(--nav-link-hover-color);
    text-decoration: underline;
}

/* Base text elements */
body, p, li, td, th {
    color: var(--text-primary);
}

.text-muted {
    color: var(--text-secondary) !important;
}

/* Lists and Tables */
.table {
    color: var(--text-primary);
}

.table-striped>tbody>tr:nth-of-type(odd)>* {
    color: var(--text-primary);
}

.btn-group {
    margin: 0.2em;
}