/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-gradient);
    transition: background 0.5s, color 0.5s;
}

/* Light mode variables */
:root {
    --bg-gradient: linear-gradient(135deg, #f8f9fa 0%, #e0eafc 100%);
    --text-color: #2c3e50;
    --about-bg: #d4edda;
    --contact-bg: #ffe5b4;
    --footer-bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --btn-bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --btn-shadow: rgba(102, 126, 234, 0.4);
    --btn-hover-shadow: rgba(102, 126, 234, 0.6);
}

/* Dark mode variables */
body.dark-mode {
    --bg-gradient: linear-gradient(135deg, #1e1e1e 0%, #3a3a3a 100%);
    --text-color: #f0f0f0;
    --about-bg: #2e4e2e;
    --contact-bg: #7a4e1a;
    --footer-bg-gradient: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    --btn-bg-gradient: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    --btn-shadow: rgba(118, 75, 162, 0.4);
    --btn-hover-shadow: rgba(118, 75, 162, 0.6);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--btn-bg-gradient);
    color: #fff;
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--btn-shadow);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--btn-hover-shadow);
}

/* Navbar Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: background 0.3s;
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: inherit;
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #007bff;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

#mode-toggle {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    margin-left: 20px;
    transition: transform 0.3s;
}

#mode-toggle:hover {
    transform: scale(1.1);
}

/* Sections */
.hero-section {
    background: linear-gradient(to right, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
    padding: 100px 0;
}

.about-section {
    background: var(--about-bg);
    transition: background 0.5s;
}

.services-section {
    background: #fff;
}

.contact-section {
    background: var(--contact-bg);
    transition: background 0.5s;
}

.contact-section form {
    max-width: 600px;
    margin: 0 auto;
}

.contact-section input,
.contact-section textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.contact-section button {
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.contact-section button:hover {
    background: #0056b3;
}

/* Footer */
.footer {
    background: var(--footer-bg-gradient);
    color: #fff;
    text-align: center;
    padding: 20px 0;
    transition: background 0.5s;
}

.footer-links {
    list-style: none;
    display: flex;
    justify-content: center;
    margin-top: 10px;
}

.footer-links li {
    margin: 0 10px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
}

/* Rainbow text animation for h1 and h2 */
@keyframes rainbow {
    0%, 100% { color: red; }
    14% { color: orange; }
    28% { color: yellow; }
    42% { color: green; }
    56% { color: blue; }
    70% { color: indigo; }
    84% { color: violet; }
}

h1, h2 {
    animation: rainbow 5s linear infinite;
}