/* Dark mode by default */
:root {
    /* Dark theme variables */
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --card-bg: #2d2d2d;
    --border-color: #404040;
    --hover-color: #3a3a3a;
    --link-color: #64b5f6;
}

/* Light mode variables */
:root[data-theme="light"] {
    --bg-color: #ffffff;
    --text-color: #333333;
    --card-bg: #f8f9fa;
    --border-color: #dee2e6;
    --hover-color: #f0f0f0;
    --link-color: #0d6efd;
}

/* Theme toggle button styles */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    background: var(--hover-color);
}

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

.profile-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    transition: color 0.3s ease;
    text-decoration: none;
}

.social-links a:hover {
    color: var(--link-color);
}

.nav-tabs {
    border-bottom: 1px solid var(--border-color);
}

.nav-tabs .nav-link {
    color: var(--text-color);
    font-weight: 500;
    border: none;
    padding: 0.5rem 1rem;
    margin-right: 1rem;
    background: transparent;
}

.nav-tabs .nav-link:hover {
    border-color: transparent;
    color: var(--link-color);
}

.nav-tabs .nav-link.active {
    color: var(--link-color);
    background-color: transparent;
    border-bottom: 2px solid var(--link-color);
    font-weight: 600;
}

.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.about-content {
    text-align: left;
    line-height: 1.6;
}

.btn-primary {
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
}

.badge {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 22px;
    object-fit: cover;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    margin: 0 auto;
}

.card-body {
    padding: 1.5rem;
}

/* Section Titles */
.section-title {
    font-size: 1.8rem;
    color: var(--text-color);
    font-weight: 600;
    position: relative;
    padding-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--link-color);
    border-radius: 2px;
}

/* Mobile Apps Section */
.mobile-apps-container {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.app-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    width: 280px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.3);
}

.app-icon-container {
    width: 120px;
    height: 120px;
    margin: 0 auto 1rem;
    background: var(--card-bg);
    border-radius: 18px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.app-icon {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    background: var(--card-bg);
}

.app-title {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.app-description {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
    margin: 0.75rem 0;
}

.app-store-btn {
    display: inline-block;
}

.app-store-btn img {
    height: 32px;
    width: auto;
    transition: opacity 0.3s ease;
}

.app-store-btn:hover img {
    opacity: 0.8;
}

.stars {
    color: #ffd700;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.rating-text {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.8rem;
    margin-left: 0.3rem;
}

/* Website Cards */
.website-card {
    background: var(--card-bg);
    border-radius: 12px;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
}

.website-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.website-content {
    padding: 1.5rem;
}

.website-title {
    color: var(--text-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.website-description {
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 1.5rem;
}

.btn-outline-primary {
    color: var(--link-color);
    border-color: var(--link-color);
    background: transparent;
    border-width: 2px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background-color: var(--link-color);
    border-color: var(--link-color);
    color: var(--bg-color);
}

.binary-text {
    font-family: 'Courier New', monospace;
    font-size: 2rem;
    color: var(--text-color);
    letter-spacing: 0.2em;
    opacity: 0.8;
    text-align: center;
    padding: 2rem 0;
}