/* --- Global Styles for Landing Page --- */
:root {
--color-bg: #FEFEFE;
--color-text: #333;
--color-accent: #28a745;
--color-primary-btn-bg: #007bff;
--color-primary-btn-text: #fff;
--color-secondary-btn-bg: #f8f9fa;
--color-secondary-btn-text: #333;
--color-secondary-btn-border: #ccc;
}
body.dark-mode {
--color-bg: #121212;
--color-text: #e0e0e0;
--color-secondary-btn-bg: #2a2a2a;
--color-secondary-btn-text: #e0e0e0;
--color-secondary-btn-border: #444;
}

body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
margin: 0;
background-color: var(--color-bg);
color: var(--color-text);
text-align: center;
line-height: 1.6;
}

/* --- Header --- */
.header {
padding: 20px;
border-bottom: 1px solid var(--color-secondary-btn-border);
display: flex;
justify-content: space-between;
align-items: center;
}
.header .logo {
font-weight: bold;
font-size: 24px;
}
.header .logo img {
max-width: 120px;
vertical-align: middle;
}

/* --- Hero Section --- */
.hero {
padding: 80px 20px;
}
.hero h1 {
font-size: 48px;
margin-bottom: 20px;
font-weight: 700;
}
.hero p {
font-size: 18px;
max-width: 600px;
margin: 0 auto 30px auto;
color: #6c757d;
}
body.dark-mode .hero p {
color: #888;
}

/* --- Call to Action Buttons --- */
.cta-buttons {
display: flex;
gap: 15px;
justify-content: center;
}
.btn {
padding: 12px 25px;
text-decoration: none;
border-radius: 8px;
font-size: 16px;
font-weight: 600;
border: 1px solid transparent;
transition: all 0.2s ease;
}
.btn-primary {
background-color: var(--color-primary-btn-bg);
color: var(--color-primary-btn-text);
}
.btn-primary:hover {
filter: brightness(90%);
}
.btn-secondary {
background-color: var(--color-secondary-btn-bg);
color: var(--color-secondary-btn-text);
border-color: var(--color-secondary-btn-border);
}
.btn-secondary:hover {
background-color: #e9ecef;
}
body.dark-mode .btn-secondary:hover {
background-color: #343a40;
}

/* --- Features Section --- */
.features {
padding: 60px 20px;
background-color: var(--color-secondary-btn-bg);
}
.features h2 {
font-size: 36px;
margin-bottom: 40px;
}
.features-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 30px;
max-width: 900px;
margin: 0 auto;
}
.feature {
text-align: left;
}
.feature i {
font-size: 24px;
color: var(--color-accent);
margin-bottom: 10px;
}
.feature h3 {
font-size: 20px;
margin: 0 0 10px 0;
}
.feature p {
font-size: 16px;
color: #6c757d;
}
body.dark-mode .feature p {
color: #888;
}

/* --- Footer --- */
.footer {
padding: 40px 20px;
margin-top: 60px;
border-top: 1px solid var(--color-secondary-btn-border);
}