/* ===================================
   CSS Reset & Variables
   =================================== */
:root {
    /* Colors */
    --color-bg: #0d0d0d;
    --color-bg-elevated: #1a1a1a;
    --color-text: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #6b6b6b;
    --color-accent: #5b7cff;
    --color-cyan: #00d4ff;
    --color-border: #2a2a2a;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-max: 1200px;
    
    /* Transitions */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===================================
   Header / Navigation
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(13, 13, 13, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    padding: 1.25rem 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo a {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
}

.nav-logo a:hover {
    color: var(--color-cyan);
}

.logo-accent {
    color: var(--color-cyan);
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-link {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--color-text);
}


.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger .bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--section-padding) 2rem;
    padding-top: calc(var(--section-padding) + 80px);
    position: relative;
    text-align: center;
    background-image: url('assets/bilder/MainBG.jpg');
    background-size: cover;
    background-position: center 70%;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(13, 13, 13, 0.75) 0%,
        rgba(13, 13, 13, 0.65) 60%,
        rgba(13, 13, 13, 0.85) 100%
    );
    z-index: 0;
}

.hero-content {
    max-width: var(--container-max);
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-label {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-cyan);
    margin-bottom: 2rem;
    font-weight: 600;
}

.hero-title {
    font-size: clamp(3rem, 7vw, 8rem);
    font-weight: 700;
    line-height: 0.95;
    margin-bottom: 2rem;
    letter-spacing: -0.04em;
    text-align: center;
}

.hero-name {
    display: inline;
    white-space: nowrap;
}

.hero-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.hero-services {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 3rem;
}

.service-tag {
    padding: 0.625rem 1.5rem;
    background-color: rgba(0, 212, 255, 0.16);
    border: 1px solid rgba(0, 212, 255, 0.4);
    border-radius: 50px;
    font-size: 0.95rem;
    color: var(--color-cyan);
    font-weight: 500;
    transition: all var(--transition);
}

.service-tag:hover {
    background-color: rgba(0, 212, 255, 0.26);
    border-color: var(--color-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.hero-visual {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    opacity: 0.4;
    z-index: 1;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background-color: #4a6ae6;
    transform: translateY(-2px);
}

.btn-secondary {
    border: 1px solid var(--color-text);
    background-color: transparent;
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.btn-outline {
    border: 1px solid var(--color-border);
    background-color: transparent;
    color: var(--color-text);
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

.btn-outline:hover {
    border-color: var(--color-text);
}

.btn-submit {
    width: 100%;
    background-color: var(--color-cyan);
    color: var(--color-bg);
    font-weight: 600;
    padding: 1rem 2rem;
}

.btn-submit:hover {
    background-color: #00bfe6;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}

/* ===================================
   Portfolio Section
   =================================== */
.portfolio {
    padding: var(--section-padding) 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--color-cyan);
    border-radius: 2px;
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--color-cyan);
    color: var(--color-cyan);
    background-color: rgba(0, 212, 255, 0.1);
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: start;
}

/* ===================================
   Services Section
   =================================== */
.services {
    padding: var(--section-padding) 0;
    background-color: var(--color-bg-elevated);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.service-card {
    padding: 2.5rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all var(--transition);
}

.service-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
    color: var(--color-cyan);
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.service-description {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ===================================
   Process Section
   =================================== */
.process {
    padding: var(--section-padding) 0;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.process-step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-cyan);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-cyan);
    transition: all var(--transition);
}

.process-step:hover .step-number {
    border-color: var(--color-cyan);
    background-color: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.step-description {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--section-padding) 0;
    background-color: var(--color-bg-elevated);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
    column-gap: 4rem;
    row-gap: 1rem;
}

.about-grid .section-title {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
    margin-bottom: 2rem;
}

.about-intro {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
}

.about-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.about-intro .about-text:last-child {
    margin-bottom: 0;
}

.about-extra {
    grid-column: 1 / 2;
    grid-row: 3 / 4;
}

.about-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.about-extra .details-toggle {
    font-size: 0.875rem;
}

.about-extra .details-content {
    padding-top: 0;
    margin-top: 0.5rem;
    border-top: none;
    font-size: inherit;
    color: inherit;
}

.about-skills-col {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
    align-self: start;
    margin-top: 2rem;
}

.tech-stack {
    width: 100%;
}

.tech-title {
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.tech-tag {
    padding: 0.5rem 1rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.tech-tag:hover {
    border-color: var(--color-text);
    color: var(--color-text);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--section-padding) 0;
}

.contact .section-title {
    text-align: center;
}

.contact-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 3rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    min-width: 0;
}

.contact-info {
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
}

.contact-info-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-cyan);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-info-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.25rem;
}

.contact-email-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-email {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-cyan);
    white-space: nowrap;
}

.copy-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    line-height: 0;
    flex-shrink: 0;
    transition: color var(--transition);
}

.copy-btn:hover {
    color: var(--color-cyan);
}

.copy-btn.copied {
    color: #4ade80;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6b6b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.form-group select option {
    background-color: var(--color-bg-elevated);
    color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-cyan);
    background-color: rgba(255, 255, 255, 0.02);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    flex-shrink: 0;
    width: 1.1rem;
    height: 1.1rem;
    margin-top: 0.15rem;
    border: 1.5px solid var(--color-border);
    border-radius: 3px;
    background-color: var(--color-bg-elevated);
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.checkbox-label input[type="checkbox"]:checked {
    background-color: var(--color-cyan);
    border-color: var(--color-cyan);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 10'%3E%3Cpolyline points='1.5,5 4.5,8 10.5,1.5' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 0.7rem;
}

.checkbox-label input[type="checkbox"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

label.required::after {
    content: " *";
    color: var(--color-cyan);
}

.required-mark {
    color: var(--color-cyan);
}

.privacy-link {
    color: var(--color-cyan);
    text-decoration: none;
}

.privacy-link:hover {
    text-decoration: underline;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo a {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-logo a:hover {
    color: var(--color-cyan);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-link {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-link:hover {
    color: var(--color-text);
}

.footer-legal {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        row-gap: 3rem;
    }

    .about-grid .section-title,
    .about-intro,
    .about-skills-col,
    .about-extra {
        grid-column: auto;
        grid-row: auto;
    }

    .about-skills-col {
        align-self: auto;
        margin-top: 0;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 77px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 77px);
        background-color: rgba(13, 13, 13, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 3rem 2rem;
        gap: 2rem;
        transition: left var(--transition);
        border-top: 1px solid var(--color-border);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        padding-top: calc(80px + 60px);
    }

    .hero-visual {
        bottom: 40px;
        width: 200px;
    }

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

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

    .process-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 60px;
    }

    .container {
        padding: 0 1.5rem;
    }

    .nav-container {
        padding: 1rem 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ===================================
   Scroll-to-Top Button
   =================================== */

.scroll-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 999;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-cyan);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: var(--transition);
}

.scroll-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background: var(--color-cyan);
    color: var(--color-bg);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.scroll-to-top svg {
    width: 20px;
    height: 20px;
}