:root {
    /* Light Mode Colors */
    --bg-color: #f4f6f8;
    --text-color: #1a1a1a;
    --card-text: #212529;
    --nav-bg: #ffffff;
    --nav-text: #0b2239;
    --card-bg: #ffffff;
    --sidebar-bg: #f9fafc;
    --footer-bg: #0b2239;
    --accent-blue: #0066cc;
    --accent-red: #ff3b30;
    --border-color: #e0e0e0;
    --link-hover: rgba(0, 102, 204, 0.3);
}

[data-theme="dark"] {
    /* Dark Mode Colors */
    --bg-color: #0d1117;
    --text-color: #e6edf3;
    --card-text: #f0f3f8;
    --nav-bg: #161b22;
    --nav-text: #f4f6f8;
    --card-bg: #1c2128;
    --sidebar-bg: #1e2630;
    --footer-bg: #001a33;
    --accent-blue: #3b82f6;
    --accent-red: #ff4d4f;
    --border-color: #2c3e50;
    --link-hover: rgba(59, 130, 246, 0.3);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', 'Poppins', sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

/* Navbar */
.navbar {
    background: var(--nav-bg);
    border-bottom: 2px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.navbar-brand {
    font-weight: 700;
    color: var(--nav-text) !important;
}

.navbar-nav .nav-link {
    color: var(--nav-text);
    transition: color 0.2s;
}

.navbar-nav .nav-link:hover {
    color: var(--accent-blue);
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: none;
    color: var(--accent-blue);
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.3s ease, color 0.3s;
}

.theme-toggle:hover {
    transform: rotate(15deg);
    color: var(--accent-red);
}

/* Cards */
.post-card {
    background: var(--card-bg);
    color: var(--card-text);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

/* Fix text visibility inside post body */
.post-card h2, .post-card h3, .post-card p, .post-card a {
    color: var(--card-text) !important;
}
.post-card {
    cursor: pointer;
    transition: all 0.3s ease;
}
.post-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.2);
}
.stretched-link::after {
    position: absolute;
    inset: 0;
    content: "";
}

/* Sidebar */
.sidebar {
    background: var(--sidebar-bg);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

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

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

/* Footer */
footer {
    background: var(--footer-bg);
    color: #fff;
    padding: 40px 0;
    margin-top: 60px;
}

footer a {
    color: #f4f4f4;
    transition: color 0.2s;
}

footer a:hover {
    color: var(--accent-red);
}

/* Alerts */
.alert {
    border-radius: 10px;
}

/* Subtle hover glow for links */
a:hover {
    text-shadow: 0 0 4px var(--link-hover);
}

/* Smooth transitions */
* {
    transition: background-color 0.3s, color 0.3s, border 0.3s;
}