/* --- Base and Theme Variables --- */
:root {
    --bg-color-dark: #212529;
    --text-color-dark: #dee2e6;
    --card-bg-dark: #2a3035;
    --border-color-dark: #495057;

    --bg-color-light: #f8f9fa;
    --text-color-light: #212529;
    --card-bg-light: #ffffff;
    --border-color-light: #dee2e6;

    --accent-color: #00aaff;
    --accent-color-hover: #0088cc;
}

[data-bs-theme="dark"] {
    --bs-body-bg: var(--bg-color-dark);
    --bs-body-color: var(--text-color-dark);
    --bs-border-color: var(--border-color-dark);
}

[data-bs-theme="light"] {
    --bs-body-bg: var(--bg-color-light);
    --bs-body-color: var(--text-color-light);
    --bs-border-color: var(--border-color-light);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
}

.section-padding {
    padding: 65px 0;
}

.accent-text {
    color: var(--accent-color);
}

.accent-bg{
    background-color: var(--accent-color);
    color: var(--text-color-dark);
}

/* --- Navbar --- */
.navbar {
    background-color: rgba(var(--bs-body-bg-rgb), 0.8);
    backdrop-filter: blur(10px);
}

.navbar-brand .ai-logo {
    width: 18%;
    height: auto;
    margin-right: 8px;
    vertical-align: middle;
}

.qqs-logo{
    width: 50%;
    background-color: #000 !important;
    padding:5px;
    border-radius: 40px;
}

/* --- Theme Toggle Switch --- */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

.theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 50px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 16px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 16px;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* --- Hero Section --- */
#hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 90vh;
}

.hero-logo {
    max-width: 120px;
    margin-bottom: 2rem;
}

/* --- Service Cards --- */
.service-card {
    background: var(--card-bg-light);
    border: 1px solid var(--border-color-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

[data-bs-theme="dark"] .service-card {
    background: var(--card-bg-dark);
    border: 1px solid var(--border-color-dark);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

[data-bs-theme="dark"] .service-card:hover {
    box-shadow: 0 8px 25px rgba(0, 170, 255, 0.15);
}

.service-card-body{
    background-color: rgba(240, 244, 247, 0.8);
}

[data-bs-theme="dark"] .service-card-body{
    background-color: rgba(0,0,0, 0.8);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    background: rgba(0, 170, 255, 0.1);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-img{
    max-height: 350px;
}

.service-card a{
    text-decoration: none;
}

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

/* --- Footer --- */
footer {
    border-top: 1px solid var(--bs-border-color);
}
.footer-links a {
    color: var(--bs-body-color);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--accent-color);
}

.header-buttons {
    display: flex;
    gap: 20px;
}

.modal-header{
    flex-direction: row;
    justify-content: space-between;
}