:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --card-bg: #ffffff;
    --card-border: #e9ecef;
    --card-box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    --primary-gradient: linear-gradient(135deg, #8A2BE2 0%, #FFD700 100%);
    --btn-text: #ffffff;
    --accent-color: #8A2BE2;
    --bs-secondary-color: #6c757d;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --nav-bg: rgba(18, 18, 18, 0.95);
    --card-bg: #1e1e1e;
    --card-border: #333333;
    --card-box-shadow: 0 15px 30px rgba(255, 255, 255, 0.1);
    --primary-gradient: linear-gradient(135deg, #6a1b9a 0%, #c4a000 100%);
    --btn-text: #ffffff;
    --accent-color: #FFD700;
    --bs-secondary-color: #adb5bd;
}

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

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-muted,
.text-body-secondary {
    color: var(--bs-secondary-color);
}

.bg-gradient-custom {
    background: var(--primary-gradient);
    color: white !important;
}

.navbar {
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand,
.nav-link {
    color: var(--text-color) !important;
    font-weight: 600;
}

.nav-link:hover {
    color: var(--accent-color) !important;
}

#theme-toggle {
    background: none;
    border: 2px solid var(--text-color);
    color: var(--text-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s;
    margin-left: auto !important;
}

#theme-toggle:hover {
    background: var(--text-color);
    color: var(--bg-color);
}

.hero {
    padding: 120px 0 80px;
    min-height: 400px;
    display: flex;
    align-items: center;
}

.profile-img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid transparent;
    background: var(--primary-gradient) border-box;
    padding: 5px;
}

.btn-custom {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 30px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(138, 43, 226, 0.4);
    color: white;
}

section {
    padding: 80px 0;
}

.section-title {
    margin-bottom: 50px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-box-shadow);
}

.card-title,
.card-text {
    color: var(--text-color);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge-skill {
    background: var(--card-border);
    color: var(--text-color);
    padding: 8px 15px;
    font-size: 0.9rem;
    border-radius: 20px;
    margin: 5px;
    font-weight: 500;
}

.project-logo {
    width: 48px;
    height: 48px;
    display: block;
    margin: 0 auto;
}

.github-btn:hover {
    background-color: var(--text-color) !important;
    color: var(--bg-color) !important;
    border-color: var(--bg-color) !important;
}

.btn-outline-orange {
    background-color: var(--bg-color) !important;
    color: #FF5700 !important;
    border-color: #FF5700 !important;
}

.btn-outline-orange:hover {
    background-color: #FF5700 !important;
    color: var(--bg-color) !important;
    border-color: var(--bg-color) !important;
}

.btn-outline-light-orange {
    background-color: var(--bg-color) !important;
    color: #FFA116 !important;
    border-color: #FFA116 !important;
}

.btn-outline-light-orange:hover {
    background-color: #FFA116 !important;
    color: var(--bg-color) !important;
    border-color: var(--bg-color) !important;
}

footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--card-border);
    padding: 30px 0;
    text-align: center;
}