/* Base Styles */
:root {
    --primary-color: #4CAF50;
    --secondary-color: #388E3C;
    --accent-color: #8BC34A;
    --text-color: #333333;
    --text-light: #666666;
    --background-color: #FFFFFF;
    --background-alt: #F9F9F9;
    --border-color: #EEEEEE;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --transition-slow: 0.5s ease;
    --transition-medium: 0.3s ease;
    --transition-fast: 0.2s ease;
    --ml-color-1: #4285F4;
    --ml-color-2: #34A853;
    --ml-color-3: #FBBC05;
    --ml-color-4: #EA4335;
}

/* Dark theme variables inspired by Next.js starter aesthetics */
[data-theme="dark"] {
    --primary-color: #60a5fa; /* tailwind sky-400 */
    --secondary-color: #93c5fd;
    --accent-color: #1f2937; /* slate-800 */
    --text-color: #e5e7eb; /* gray-200 */
    --text-light: #9ca3af; /* gray-400 */
    --background-color: #0b1220; /* deep slate/ink */
    --background-alt: #0f172a; /* slate-900 */
    --border-color: #1f2937;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary-color);
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1.5rem;
}

ul {
    list-style: none;
}

/* Noise Overlay */
.noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/noise.svg');
    opacity: 0.03;
    pointer-events: none;
    z-index: 9999;
}

/* Custom Cursor */
.cursor {
    position: fixed;
    width: 10px;
    height: 10px;
    background-color: var(--primary-color);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    transition: transform 0.1s ease;
}

.cursor-follower {
    position: fixed;
    width: 30px;
    height: 30px;
    border: 1px solid var(--primary-color);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9998;
    transition: transform 0.3s ease, width 0.3s ease, height 0.3s ease;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 0;
    z-index: 100;
    transition: padding var(--transition-medium), background-color var(--transition-medium);
}

header.scrolled {
    padding: 1rem 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 5px 20px var(--shadow-color);
    backdrop-filter: saturate(180%) blur(8px);
    -webkit-backdrop-filter: saturate(180%) blur(8px);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] header.scrolled {
    background-color: rgba(15, 23, 42, 0.9);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-medium);
}

nav a:hover::after {
    width: 100%;
}

nav a.active::after {
    width: 100%;
}

.contact-link {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    transition: background-color var(--transition-fast);
}

.contact-link:hover {
    background-color: var(--secondary-color);
    color: white;
}

.contact-link::after {
    display: none;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 6rem 0;
    background: radial-gradient(1200px 600px at 10% -10%, rgba(96, 165, 250, 0.25), transparent 60%),
                radial-gradient(800px 400px at 90% 10%, rgba(52, 211, 153, 0.25), transparent 60%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-image {
    max-width: 400px;
    margin: 0 auto 2rem;
}

.hero-cta {
    margin-bottom: 3rem;
}

.download-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--ml-color-1);
    color: white;
    border-radius: 30px;
    font-weight: 500;
    transition: all var(--transition-medium);
    box-shadow: 0 5px 15px rgba(66, 133, 244, 0.3);
}

.download-button:hover {
    background-color: var(--ml-color-2);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(52, 168, 83, 0.4);
    color: white;
}

.button-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    margin-left: 0.75rem;
    border-radius: 30px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    transition: background-color var(--transition-medium), color var(--transition-medium), transform var(--transition-medium), border-color var(--transition-medium);
}

.button-secondary:hover {
    background-color: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-light);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 10px;
}

.wheel {
    width: 4px;
    height: 8px;
    background-color: var(--text-light);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(15px);
        opacity: 0;
    }
}

.arrow span {
    display: block;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--text-light);
    border-right: 2px solid var(--text-light);
    transform: rotate(45deg);
    margin: -5px;
    animation: arrow 1.5s infinite;
}

.arrow span:nth-child(2) {
    animation-delay: -0.2s;
}

.arrow span:nth-child(3) {
    animation-delay: -0.4s;
}

@keyframes arrow {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-5px, -5px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(45deg) translate(5px, 5px);
    }
}

/* Background Elements */
.background-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: -1;
}

/* Gradient headline like Next.js starter */
.gradient-text {
    background: linear-gradient(90deg, var(--ml-color-1), var(--ml-color-2), var(--ml-color-3), var(--ml-color-4));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Theme toggle */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover { 
    background-color: var(--background-alt);
    transform: translateY(-2px);
}

.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.element {
    position: absolute;
    background-color: var(--accent-color);
    opacity: 0.1;
    border-radius: 50%;
}

.element-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 5%;
    animation: float 15s infinite alternate;
}

.element-2 {
    width: 200px;
    height: 200px;
    bottom: 20%;
    right: 10%;
    animation: float 12s infinite alternate-reverse;
}

.element-3 {
    width: 150px;
    height: 150px;
    top: 40%;
    right: 20%;
    animation: float 10s infinite alternate;
}

.element-4 {
    width: 100px;
    height: 100px;
    bottom: 10%;
    left: 20%;
    animation: float 8s infinite alternate-reverse;
}

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    100% {
        transform: translate(20px, 20px) rotate(10deg);
    }
}

/* Animation Classes */
.reveal-text {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-text.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-image {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-image.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.reveal-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-card.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}

.delay-3 {
    transition-delay: 0.6s;
}

/* Introduction Section */
.introduction {
    padding: 6rem 0;
    position: relative;
    background-color: var(--background-alt);
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro-image {
    max-width: 500px;
    margin: 0 auto 3rem;
}

.intro-content h2 {
    margin-bottom: 1.5rem;
}

.intro-content p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Skills Section */
.skills {
    padding: 6rem 0;
    position: relative;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-card {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-color);
}

.skill-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
}

.skill-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.skill-card h4 {
    margin: 1.5rem 0 0.5rem;
    font-size: 1rem;
    color: var(--text-color);
}

.skill-card ul {
    margin-top: 0.5rem;
}

.skill-card li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

/* Recent Work Section */
.recent-work {
    padding: 6rem 0;
    position: relative;
    background-color: var(--background-alt);
    text-align: center;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.work-item {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.work-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-color);
}

.work-image {
    height: 200px;
    overflow: hidden;
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.work-item:hover .work-image img {
    transform: scale(1.05);
}

/* Company logo banners */
.company-banner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.company-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    opacity: 0.92;
}

.company-logo-img {
    max-width: 160px;
    max-height: 70px;
    object-fit: contain;
    width: auto !important;
    height: auto !important;
    filter: brightness(0) invert(1) drop-shadow(0 2px 8px rgba(0,0,0,0.3));
    z-index: 2;
    position: relative;
    transition: transform var(--transition-medium), filter var(--transition-medium);
}

.work-item:hover .company-logo-img {
    transform: scale(1.08);
    filter: brightness(0) invert(1) drop-shadow(0 4px 16px rgba(0,0,0,0.5));
}

.company-abbr {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: rgba(255,255,255,0.75);
    text-transform: uppercase;
    z-index: 2;
    position: relative;
}

.company-badge {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 3;
}

.ttn-banner {
    background: linear-gradient(135deg, #c0392b 0%, #e74c3c 50%, #e67e22 100%);
}
.ttn-banner .company-badge { background: linear-gradient(90deg, #c0392b, #ff6b35); }

.hcl-banner {
    background: linear-gradient(135deg, #003f8a 0%, #0063c6 50%, #00a3e0 100%);
}
.hcl-banner .company-badge { background: linear-gradient(90deg, #003f8a, #00a3e0); }

.apisero-banner {
    background: linear-gradient(135deg, #006b5e 0%, #00c7b7 50%, #009bde 100%);
}
.apisero-banner .company-badge { background: linear-gradient(90deg, #00c7b7, #009bde); }

.sopra-banner {
    background: linear-gradient(135deg, #6a0d78 0%, #8c1d82 50%, #d9272e 100%);
}
.sopra-banner .company-badge { background: linear-gradient(90deg, #8c1d82, #d9272e); }

.microsoft-banner {
    background: linear-gradient(135deg, #00a4ef 0%, #7fba00 50%, #ffb900 100%);
}
.microsoft-banner .company-badge { background: linear-gradient(90deg, #00a4ef, #f25022); }

.work-item h3 {
    margin: 1.5rem 1rem 0.5rem;
    font-size: 1.25rem;
}

.work-item p {
    margin: 0 1rem 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.work-period {
    font-size: 0.8rem !important;
    font-weight: 500;
    color: var(--primary-color) !important;
    margin-bottom: 1rem !important;
}

.work-highlights {
    padding: 0 1rem 1.5rem;
    list-style-type: none;
}

.work-highlights li {
    position: relative;
    padding-left: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.4;
}

.work-highlights li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Notes Section */
.notes {
    padding: 6rem 0;
    position: relative;
    text-align: center;
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.note-item {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    text-align: left;
}

.note-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-color);
}

.note-item h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.note-item p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.read-more {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 500;
    position: relative;
}

.read-more::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-medium);
}

.read-more:hover::after {
    width: 100%;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    position: relative;
    background-color: var(--background-alt);
    text-align: center;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-weight: 500;
    margin-top: 2rem;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.contact-button:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-5px);
}

/* Footer */
footer {
    padding: 4rem 0;
    background-color: var(--background-color);
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.contact-info {
    margin-bottom: 1.5rem;
}

.contact-info p {
    display: inline-block;
    margin: 0 1rem 0.5rem;
    font-size: 0.9rem;
}

.contact-info span {
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--background-alt);
    color: var(--text-color);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

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

.copyright {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Responsive Styles */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .container {
        padding: 0 1.5rem;
    }

    nav ul {
        gap: 1rem;
    }

    .skills-grid,
    .work-grid,
    .notes-grid {
        grid-template-columns: 1fr;
    }
}

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

    h2 {
        font-size: 1.75rem;
    }

    .container {
        padding: 0 1rem;
    }

    nav ul {
        gap: 0.75rem;
    }

    .hero-image {
        max-width: 300px;
    }

    .intro-image {
        max-width: 300px;
    }
}

/* Preloader overlay */
.preloader {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background: var(--background-color);
    z-index: 10000;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.preloader .logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.loading-bar {
    width: 200px;
    height: 6px;
    background: var(--background-alt);
    border-radius: 9999px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.loading-progress {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--ml-color-1), var(--ml-color-2));
    animation: loadProgress 1.2s ease-in-out infinite;
}

@keyframes loadProgress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}