/* CSS Custom Properties for Theme */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --black: #000000;

    /* Light theme variables */
    --bg-color: #ffffff;
    --text-color: #333333;
    --section-bg: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.1);

    /* Fonts */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    --font-accent: 'Raleway', sans-serif;
}

/* Dark theme variables */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --section-bg: #252525;
    --card-bg: #2a2a2a;
    --border-color: #404040;
    --shadow: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--text-color);
}

.section-title {
    font-family: var(--font-accent);
    font-weight: 600;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    color: var(--text-color);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* Theme Toggle Button */
#theme-toggle {
    z-index: 1001;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

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

/* Navigation */
.navbar {
    transition: all 0.3s ease;
    background-color: var(--dark-color) !important;
}

.navbar-brand {
    font-family: var(--font-accent);
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--section-bg) 100%);
    padding-top: 80px;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23007bff" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

.profile-img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border: 5px solid var(--primary-color);
    box-shadow: 0 10px 30px var(--shadow);
    transition: transform 0.3s ease;
    animation: fadeInRight 1s ease-out 0.3s both;
}

.profile-img:hover {
    transform: scale(1.05);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-link:hover {
    background-color: var(--dark-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--shadow);
}

/* Typing Animation */
#typing-text {
    font-weight: 600;
}

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* About Section */
#about {
    background-color: var(--bg-color);
}

.stat-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 10px var(--shadow);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px var(--shadow);
}

/* Skills Section */
#skills {
    background-color: var(--section-bg);
}

.skill-item .progress {
    height: 10px;
    border-radius: 5px;
    background-color: var(--border-color);
}

.skill-item .progress-bar {
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 1.5s ease-in-out;
}

/* Projects Section */
.project-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px var(--shadow);
}

.project-image {
    position: relative;
    overflow: hidden;
}

.project-image img {
    transition: transform 0.3s ease;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 123, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-content {
    background-color: var(--card-bg);
}

.project-title {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.project-description {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* Contact Section */
#contact {
    background-color: var(--section-bg);
}

.contact-form {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow);
    border: 1px solid var(--border-color);
}

.form-control {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    background-color: var(--bg-color);
    border-color: var(--primary-color);
    color: var(--text-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-control.is-valid {
    border-color: var(--success-color);
}

.form-control.is-valid:focus {
    border-color: var(--success-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-control.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-label {
    color: var(--text-color);
    font-weight: 500;
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--danger-color);
}

.invalid-feedback.d-block {
    display: block !important;
}

.contact-item {
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

/* Alert customizations for contact form */
#contact .alert {
    border-radius: 8px;
    border: none;
}

#contact .alert-success {
    background-color: var(--success-color);
    color: white;
}

#contact .alert-danger {
    background-color: var(--danger-color);
    color: white;
}

#contact .alert-warning {
    background-color: var(--warning-color);
    color: var(--dark-color);
}

/* Footer */
footer {
    background-color: var(--dark-color) !important;
    color: var(--light-color) !important;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
    padding: 0.75rem 2rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.4);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
    padding: 0.75rem 2rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.4);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .profile-img {
        width: 250px;
        height: 250px;
        margin-top: 2rem;
    }

    .hero-buttons {
        margin-top: 1.5rem;
    }

    .btn-lg {
        padding: 0.5rem 1.5rem;
        font-size: 1rem;
    }

    .social-links {
        justify-content: center;
        margin-top: 1.5rem;
    }

    #theme-toggle {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .profile-img {
        width: 200px;
        height: 200px;
    }

    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin: 0.5rem 0;
    }

    .social-link {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}

/* Dark Mode Styles */
[data-theme="dark"] .navbar {
    background-color: #1a1a1a !important;
}

[data-theme="dark"] .form-control {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .form-control:focus {
    background-color: var(--card-bg);
    border-color: var(--primary-color);
    color: var(--text-color);
}

[data-theme="dark"] .badge {
    background-color: var(--primary-color) !important;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation for Skills */
.skill-item .progress-bar {
    animation: slideInLeft 1.5s ease-in-out;
}

@keyframes slideInLeft {
    from {
        width: 0;
    }
}

/* Hover Effects */
.project-tech .badge {
    transition: all 0.3s ease;
}

.project-tech .badge:hover {
    transform: scale(1.1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--section-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* Print Styles */
@media print {

    .navbar,
    #theme-toggle,
    .social-links,
    #contact {
        display: none !important;
    }

    body {
        background-color: white !important;
        color: black !important;
    }

    .section-title {
        color: black !important;
    }
}