/* Global Styles */
:root {
    /* Light Theme (default) */
    --primary-color: #2563eb;
    --secondary-color: #f472b6;
    --text-color: #1e293b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --shadow-color: rgba(37, 99, 235, 0.1);
    --transition: all 0.3s ease;
}

[data-theme='dark'] {
    --primary-color: #60a5fa;
    --secondary-color: #f9a8d4;
    --text-color: #f1f5f9;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --nav-bg: rgba(15, 23, 42, 0.95);
    --shadow-color: rgba(96, 165, 250, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: var(--nav-bg);
    box-shadow: 0 2px 10px var(--shadow-color);
    z-index: 1000;
}

.theme-toggle {
    margin-left: 2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-bg);
    color: var(--text-color);
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 5px var(--shadow-color);
    will-change: transform;
}

.theme-toggle:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.15rem;
    font-weight: bold;
    color: var(--primary-color);
    padding-left: 40px;
}

.nav-logo-img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%) scale(1.2);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin-left: auto;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
    will-change: transform;
}

.hamburger:hover span {
    background-color: var(--secondary-color);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-links.active {
    display: flex !important;
}