:root {
    --bg-color: #1a1a1a;
    --primary-color: #00f5d4;
    --secondary-color: #9b5de5;
    --text-color: #ffffff;
    --muted-text-color: #adb5bd;
    --card-bg: #2c2c2c;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    padding-top: 70px;
}

.navbar {
    background: rgba(26, 26, 26, 0.85) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 15px 0;
    transition: all 0.3s ease-in-out;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    margin: 0 10px;
    padding: 8px 16px !important;
    border-radius: 25px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-link:hover, .nav-link.active {
    background-color: var(--primary-color);
    color: var(--bg-color) !important;
    transform: translateY(-3px);
}

section {
    padding: 100px 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-section {
    background: linear-gradient(145deg, #1a1a1a 0%, #2c2c2c 100%);
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-content .hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--muted-text-color);
    max-width: 600px;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-color);
    font-weight: 600;
    padding: 12px 30px;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.btn-primary:hover {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: scale(1.05);
}

.btn-outline-light {
    border-color: var(--text-color);
    color: var(--text-color);
    font-weight: 600;
    padding: 12px 30px;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
    transform: scale(1.05);
}

.profile-img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    border: 5px solid var(--primary-color);
    box-shadow: 0 0 40px rgba(0, 245, 212, 0.3);
    transition: all 0.4s ease-in-out;
    object-fit: cover;
    animation: float 3s ease-in-out infinite;
}

.profile-img:hover {
    transform: rotate(5deg) scale(1.1);
    border-color: var(--secondary-color);
    box-shadow: 0 0 50px rgba(155, 93, 229, 0.4);
}

.social-icons a {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 15px;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    color: var(--primary-color);
    transform: translateY(-5px);
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 4rem;
    position: relative;
    display: inline-block;
    color: var(--primary-color);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
}

.custom-card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: all 0.3s ease;
    overflow: hidden;
    padding: 2rem;
}

.custom-card.project-card {
    animation: slideIn 1s ease-out forwards;
}

.skill-item {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    height: 100%;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.skill-item:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.skill-icon {
    font-size: 3rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.progress {
    height: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.accordion-item {
    background-color: var(--card-bg) !important;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 1rem;
    border-radius: 15px !important;
}

.accordion-header {
    border-radius: 15px !important;
}

.accordion-button {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
    font-weight: 600;
    border-radius: 15px !important;
}

.accordion-button:not(.collapsed) {
    color: var(--primary-color) !important;
    box-shadow: none;
}

.accordion-button::after {
    filter: brightness(0) invert(1);
}

.accordion-body {
    color: var(--muted-text-color);
}

.experience-item {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    border-left: 5px solid var(--primary-color);
    transition: all 0.3s ease;
}

.experience-item:hover {
    transform: translateX(10px);
    border-left-color: var(--secondary-color);
}

.experience-duration {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-color);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.project-img {
    border-radius: 15px 15px 0 0;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 1.5rem;
    width: 40px;
    text-align: center;
}

.form-control {
    background-color: #2c2c2c;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border-radius: 10px;
    padding: 12px;
}

.form-control:focus {
    background-color: #2c2c2c;
    color: var(--text-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 245, 212, 0.2);
}

.footer {
    background-color: #1a1a1a;
    padding: 50px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-top.active {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    .profile-img {
        margin-top: 3rem;
    }
}

@media (max-width: 768px) {
    .navbar-collapse {
        background: rgba(26, 26, 26, 0.98);
        padding: 1rem;
        border-radius: 15px;
        margin-top: 10px;
    }
    .nav-link {
        margin: 10px 0;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 2.2rem;
    }
    .section-title {
        font-size: 2.5rem;
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 245, 212, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 245, 212, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 245, 212, 0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}