:root {
    --bg-primary: #ffffff;
    --bg-secondary: #e9ecef;
    --text-primary: #333;
    --text-secondary: #666;
    --text-tertiary: #777;
    --text-muted: #999;
    --border-color: #e7e7e7;
    --border-light: #ddd;
    --accent-color: #2B879E;
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-tertiary: #a0a0a0;
    --text-muted: #808080;
    --border-color: #404040;
    --border-light: #4a4a4a;
    --accent-color: #3fa8c4;
}

body {
    font-family: 'Roboto Condensed', sans-serif;
    scroll-behavior: smooth;
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 14px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

* {
    box-sizing: border-box;
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Container */
.container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Text utilities */
.text-center {
    text-align: center;
}

/* Navbar */
.navbar {
    background: var(--bg-primary);
    border-top: 7px solid var(--accent-color);
    position: relative;
    z-index: 500;
}

.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 15px;
}

.navbar-header {
    display: flex;
    align-items: center;
}

.navbar-brand {
    color: var(--text-secondary) !important;
    font-weight: 400;
    font-size: 25px;
    text-decoration: none;
    padding: 0;
}

.navbar-brand .two {
    color: var(--text-muted);
}

.navbar-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 9px 10px;
    cursor: pointer;
}

.navbar-toggle .icon-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--text-tertiary);
    border-radius: 1px;
    margin: 4px 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    display: block;
    padding: 0 14px;
    line-height: 80px;
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--text-primary);
}

/* Responsive navbar */
@media (max-width: 825px) {
    .navbar-inner {
        flex-wrap: wrap;
    }
    
    .navbar-header {
        width: 100%;
        justify-content: space-between;
        flex-direction: row-reverse;
        height: 60px;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .navbar-brand {
        line-height: 20px;
        padding-top: 15px;
        padding-bottom: 10px;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        line-height: 20px;
        padding: 10px 15px;
        border-top: 1px solid var(--border-color);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: normal;
    line-height: 1.42857143;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s;
}

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

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

.btn-lg {
    padding: 10px 16px;
    font-size: 18px;
    line-height: 1.3333333;
    border-radius: 6px;
}

/* Jumbotron */
.jumbotron {
    background-image: url('img/mirror.png');
    background-size: clamp(550px, 65vw, 1200px) auto;
    background-position: bottom clamp(-425px, 90%, -200px) right -15em;
    background-repeat: no-repeat;
    background-color: var(--bg-secondary);
    padding: clamp(30px, 8vw, 50px) 15px;
    margin-bottom: 20px;
    position: relative;
}

.jumbotron h1 {
    margin-top: 0;
}

/* Grid system */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
    gap: clamp(20px, 4vw, 30px);
}

/* Video container */
.video-container {
    position: relative;
    max-width: 66.666667%;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid var(--text-muted);
}

/* Demo GIF container */
.demo-container {
    max-width: 66.666667%;
    margin: 0 auto;
}

.demo-gif {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.demo-gif:hover {
    transform: scale(1.02);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 100%;
    max-height: 100vh;
    width: auto;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10001;
    transition: color 0.3s;
}

.modal-close:hover {
    color: #ccc;
}

@media (max-width: 825px) {
    .video-container,
    .demo-container {
        max-width: 100%;
    }
}

/* Centered content */
.centered-content {
    max-width: 750px;
    margin: 0 auto;
}
/* Fade-in animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive image */
.responsive-img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    padding: 15px 0;
    margin-top: 0;
}

.footer a {
    color: var(--text-muted);
}

/* Lead text */
.lead {
    font-size: clamp(18px, 3.5vw, 21px);
    font-weight: 300;
    line-height: 1.4;
    margin: 5px 5px 25px 5px;
}

/* MagPi images */
.magpi-logo {
    max-width: 150px;
    margin: 0 auto 20px;
}

.magpi-logo img {
    max-width: 100%;
    height: auto;
}

a:has(.magpi-floating) {
    display: block;
    text-align: center;
    line-height: 0;
    position: relative;
}

.magpi-floating {
    position: absolute;
    z-index: 9999;
    top: -55px;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: clamp(80px, 20vw, 120px);
    animation-name: appear;
    animation-duration: 2s;
    animation-delay: 1s;
    transform: scale(0,0);
    animation-fill-mode: forwards;
    filter: drop-shadow(2px 2px 0px rgba(0,0,0,0.1));
}

@keyframes appear {
    from {
        transform: scale(0,0) rotate(30deg);
    }
    to {
        transform: scale(1,1) rotate(-1deg);
    }
}

@media (max-width: 1500px) {


    .jumbotron {
        margin-top: 35px;
    }
}

.section {
    margin-top: clamp(50px, 10vw, 100px);
    margin-bottom: 0;
}

h1.logo {
    font-size: clamp(50px, 10vw, 100px);
    font-weight: 100;
    margin-top: 10px;
    margin-bottom: 0;
}

h1.logo .two {
    color: var(--text-muted);
}

h2 {
    font-size: clamp(24px, 5vw, 30px);
    font-weight: 500;
    margin-bottom: 10px;
}

h3 {
    font-size: clamp(20px, 4vw, 24px);
    font-weight: 400;
    margin-bottom: 0;
}

p {
    color: var(--text-secondary);
    line-height: 1.4;
}

.payoff {
    color: var(--text-secondary);
}

.links {
    margin-bottom: -50px;
}

.links .btn {
    margin-bottom: 50px;
}

.line {
    border-bottom: 3px solid var(--accent-color);
    width: 75px;
    display: inline-block;
}

.nav-donate a {
    border-radius: 3px;
    border: 0;
    background-image: linear-gradient(100deg, rgb(0, 112, 186), rgb(0, 48, 135));
    color: white !important;
    line-height: 40px;
    margin: 20px 0;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0 14px;
    font-size: 16px;
    transition: color 0.3s;
    line-height: 40px;
    margin: 20px 0;
}

.theme-toggle:hover {
    color: var(--text-primary);
}

@media (max-width: 825px) {
    .nav-donate a {
        border-radius: 0;
        line-height: inherit;
        margin: 0;
    }

    .theme-toggle {
        line-height: inherit;
        border-top: 1px solid var(--border-color
    }
}

.donate-spacer {
    display:flex;
    margin-top: 3rem;
    margin-bottom: 3rem;
    align-items: center;
}

.donate-spacer > .spacer-body {
    text-transform: uppercase;
    margin-left: 1rem;
    margin-right: 1rem;
    color: #aaa;
    font-size: 11px;
}

.donate-spacer > .spacer-line {
    flex: 1;
    border-top: 1px solid #ddd;
}