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

:root {
    --purple: #ff0000; /* Rot */
    --blue: #ff7f7f;   /* Helleres Rot */
    --background-dark: #111827;
    --background-light: #dbdbdb;
    --card-dark: #1f2937;
    --card-light: #ffffff;
    --text-dark: #ffffff;
    --text-light: #111827;
    --border-dark: #374151;
    --border-light: #e5e7eb;
    --footer-bg: #1f2937;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--background-light);
    color: var(--text-light);
    transition: background-color 0.3s, color 0.3s;
}

body.dark {
    background-color: var(--background-dark);
    color: var(--text-dark);
}

/* Loader */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.5s;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 64px;
    height: 64px;
    border: 4px solid transparent;
    border-top-color: var(--purple);
    border-right-color: var(--blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(31, 41, 55, 0.9);
    backdrop-filter: blur(8px);
    z-index: 100;
    padding: 1rem;
}

body:not(.dark) nav {
    background-color: rgba(255, 255, 255, 0.9);
}

.nav-content {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(to right, var(--purple), var(--blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    background: none;
    border: none;
    color: inherit;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--purple);
}

.theme-toggle {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
}

body.dark .sun-icon,
body:not(.dark) .moon-icon {
    display: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.5rem;
}



.mobile-menu {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background-color: var(--card-dark);
    position: absolute;
    top: 50px; /* Adjust based on your navbar height */
    right: 10px;
    width: 200px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease-out, opacity 0.3s ease-out, visibility 0.3s;
}

body:not(.dark) .mobile-menu {
    background-color: var(--card-light);
}

.mobile-menu.show {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-link {
    background: none;
    border: none;
    color: inherit;
    font-size: 1rem;
    padding: 0.75rem;
    text-align: left;
    cursor: pointer;
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

/* Staggered animations */
.mobile-menu.show .mobile-link {
    opacity: 1;
    transform: translateX(0);
}

.mobile-menu.show .mobile-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.show .mobile-link:nth-child(2) { transition-delay: 0.2s; }
.mobile-menu.show .mobile-link:nth-child(3) { transition-delay: 0.3s; }


/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
#home {
    padding-top: 6rem;
}

body:not(.dark) #home{
    background-color: rgb(229 229 226) !important;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.profile-image-container {
    position: relative;
    perspective: 1000px;
}

.image-backdrop {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.15), transparent 70%);
    z-index: -1;
    border-radius: 2rem;
    transform: translateZ(-50px);
}

.profile-image {
    width: 65%;
    height: 400px;
    object-fit: cover;
    border-radius: 2rem;
    transition: transform 0.3s;
}

.profile-image:hover {
    transform: rotate(0deg) scale(1.05);
}

.hero-content {
    padding: 2rem;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(to right, var(--purple), var(--blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(to right, var(--purple), var(--blue));
    border-radius: 50%;
    color: white;
    transition: opacity 0.3s;
}

.social-link:hover {
    opacity: 0.9;
}

.cta-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(to right, var(--purple), var(--blue));
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: opacity 0.3s;
}

.cta-button:hover {
    opacity: 0.9;
}

/* Projects Section */
#projects {
    padding: 4rem 0;
    background-color: rgba(31, 41, 55, 0.5);
}

body:not(.dark) #projects {
    background-color: rgba(243, 244, 246, 0.5);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--card-dark);
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.3s;

    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

body:not(.dark) .project-card {
    background-color: var(--card-light);
}

.project-card:hover {
    transform: translateY(-0.5rem);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-grow: 1;
    padding: 1.5rem;
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.project-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(to right, var(--purple), var(--blue));
    border-radius: 0.75rem;
    color: white;
}

.project-header h3 {
    font-size: 1.25rem;
}

.project-content p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-button {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(to right, var(--purple), var(--blue));
    border: none;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: opacity 0.3s;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}

.project-button:hover {
    opacity: 0.9;
}


/* Services Section */
.services-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

body:not(.dark) .services-card{
    background: var(--background-light);
}

.service-container{
    padding: 70px 0;
}

.service-card {
    background: var(--surface);
    border-radius: 12px;
    padding: 2rem;
    border: 2px solid var(--primary);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 450px;
    width: auto;
    display: inline-block;
    opacity: 0;
    transition: transform 0.5s ease-out, opacity 0.5s ease-out, box-shadow 0.3s;
}

.slide-left {
    transform: translateX(-100%);
}

.slide-right {
    transform: translateX(100%);
}


.service-card.visible {
    transform: translateX(0);
    opacity: 1;
}

.service-card.visible:hover {
    transform: translateX(0) translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 131, 174, 0.615);
}

.service-card h3 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.service-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-card li {
    position: relative;
    padding-left: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.service-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary);
}

.glow-purple {
    box-shadow: 0 0 10px rgba(0, 115, 128, 0.877);
}


/* Review Section*/

.reviews {
    background: linear-gradient(to bottom, var(--background), var(--surface));
    padding: 100px 0;
}

body:not(.dark) .reviews{
    background: var(--background-light);
}

.reviews-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.reviews-intro {
    color: var(--text-secondary);
    font-size: 1.2rem;
    line-height: 1.6;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* Review Form */
.review-form {
    background: var(--background-dark);
    border-radius: 16px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

body:not(.dark) .review-form{
    background: var(--background-light);
}

.review-form h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
    outline: none;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.rating-input {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.rating-input input {
    width: 100px;
}

.rating-hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.rating-input input {
    -moz-appearance: textfield; /* Firefox */
    appearance: textfield; /* Standard */
}

.rating-input input::-webkit-outer-spin-button,
.rating-input input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Review Cards */
.review-card {
    background: linear-gradient(145deg, var(--surface), var(--background));
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.review-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.1;
    font-family: serif;
}

.review-card .stars {
    color: var(--primary);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 0.25rem;
}

.review-card .review-text {
    color: var(--text);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.review-card .review-author {
    color: var(--primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.review-card .review-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.1);
}

/* Glow Effect */
.glow-purple {
    border: 1px solid var(--primary);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
    transition: all 0.3s ease;
}

.glow-purple:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
}


/* Contact Section */
.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    margin-top: 2rem;
}

.contact-link {
    display: inline-block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--purple);
    text-decoration: none;
    transition: all 0.3s;
}

.contact-link span{
    color: var(--text-dark);
}

body:not(.dark) .contact-link span{
    color: var(--text-light);
}

.contact-link:hover {
    color: var(--blue);
    transform: translateY(-4px);
}


/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}


body:not(.dark) ::-webkit-scrollbar-track {
    background-color: var(--background-dark);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--purple), var(--blue));
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, #7c3aed, #2563eb);
}


.footer{
    background-color: var(--footer-bg);
    color: var(--text-dark);
    padding: 2rem;
    text-align: center;
    margin-top: 2rem;
    border: 2px solid rgb(111, 111, 111);
    border-top-left-radius: 50% 100%;
    border-top-right-radius: 50% 100%;
    position: relative;
    bottom: -1px;
}

body:not(.dark) .footer{
    background-color: rgb(220, 220, 220);
    color: var(--text-light);
}

/* Skills & Certificates Section */
.skills-section {
    padding: 4rem 0;
    background-color: var(--background-dark);
}

body:not(.dark) .skills-section {
    background-color: var(--background-light);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-card {
    background-color: var(--card-dark);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    border-left: 5px solid var(--purple);
}

body:not(.dark) .skill-card {
    background-color: var(--card-light);
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-card h3 {
    font-size: 1.25rem;
    color: var(--purple);
    margin-bottom: 1rem;
}

.skill-card ul {
    list-style: none;
    padding-left: 1rem;
}

.skill-card li {
    position: relative;
    margin-bottom: 0.5rem;
    padding-left: 1rem;
}

.skill-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--blue);
}

.skill-card.in-progress {
    border-left: 5px solid orange;
}

.skill-card.achieved {
    border-left: 5px solid limegreen;
}

/* Media Queries */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .mobile-menu.show {
        display: flex;
    }

    .profile-image {
        display: none;
    }

    .image-backdrop{
        display: none;
    }

    .hero-grid {
        grid-template-columns: 1fr;
    }

    .profile-image {
        height: 400px;
    }

    .hero-content {
        padding: 1rem 0;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

    .footer{
        border-top-left-radius: 33% 100%;
        border-top-right-radius: 33% 100%;
        bottom: -5px;
    }
}