/* ==========================================
   SVEDKIJS IT-Systemhaus - Stylesheet
   Design System: Corporate Design Guide
   Colors: #FFFFFF, #258FE7, #3070CF, #5B5C9C, #1A1B53
   Fonts: Helvetica (headings), Fira Code (code/accents)
   ========================================== */

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-white: #FFFFFF;
    --color-blue: #258FE7;
    --color-blue-mid: #3070CF;
    --color-blue-dark: #5B5C9C;
    --color-navy: #1A1B53;
    --color-navy-light: #252670;
    --color-bg-light: #F4F7FB;
    --color-bg-alt: #EAF0F9;
    --color-text: #2D2D3A;
    --color-text-light: #6B7280;
    --color-border: #E2E8F0;

    --font-main: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-code: 'Fira Code', monospace;

    --container-max: 1200px;
    --section-padding: 6rem 0;
    --border-radius: 12px;
    --transition: 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    color: var(--color-text);
    line-height: 1.7;
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* --- Container --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.85rem 2rem;
    border-radius: 6px;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    text-align: center;
}

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

.btn--primary:hover {
    background: var(--color-blue-mid);
    border-color: var(--color-blue-mid);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(37, 143, 231, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn--outline:hover {
    background: var(--color-white);
    color: var(--color-navy);
    transform: translateY(-2px);
}

.btn--lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* --- Header / Navigation --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: background var(--transition), box-shadow var(--transition);
}

.header--scrolled {
    background: var(--color-white);
    box-shadow: 0 2px 20px rgba(26, 27, 83, 0.08);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav__logo-img {
    height: 32px;
    transition: opacity var(--transition);
}

/* Top: show symbol logo, hide full logo */
.nav__logo-symbol {
    height: 40px;
    display: block;
    border-radius: 8px;
}

.nav__logo-full {
    height: 32px;
    display: none;
}

/* Scrolled: hide symbol, show full logo */
.header--scrolled .nav__logo-symbol {
    display: none;
}

.header--scrolled .nav__logo-full {
    display: block;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav__link {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-white);
    border-radius: 6px;
    transition: all var(--transition);
}

.header--scrolled .nav__link {
    color: var(--color-text);
}

.nav__link:hover {
    color: var(--color-blue);
}

.nav__link--cta {
    background: var(--color-blue);
    color: var(--color-white) !important;
    margin-left: 0.5rem;
}

.nav__link--cta:hover {
    background: var(--color-blue-mid);
}

/* Hamburger */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.nav__toggle-line {
    width: 26px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition);
    border-radius: 2px;
}

.header--scrolled .nav__toggle-line {
    background: var(--color-navy);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-navy);
    overflow: hidden;
    padding-top: 80px;
}

.hero__video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 15, 35, 0.75) 0%, rgba(15, 40, 90, 0.65) 50%, rgba(20, 60, 120, 0.60) 100%);
    z-index: 1;
}

.hero__content {
    text-align: center;
    color: var(--color-white);
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero__logo {
    height: 128px;
    margin: 0 auto 1.5rem;
    filter: drop-shadow(0 0 18px rgba(74, 144, 226, 0.7)) drop-shadow(0 0 40px rgba(74, 144, 226, 0.35));
    border-radius: 12px;
}

.hero__tagline {
    font-family: var(--font-code);
    font-size: 1rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.8;
    margin-bottom: 1.5rem;
}

.hero__title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero__highlight {
    color: #5EE7FF;
}

.hero__subtitle {
    font-size: 1.2rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* --- Section Base --- */
.section {
    padding: var(--section-padding);
}

.section__title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-navy);
    text-align: center;
    margin-bottom: 0.75rem;
}

.section__title--left {
    text-align: left;
}

.section__subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 3.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Services Grid --- */
.leistungen {
    background: var(--color-bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    transition: all var(--transition);
    border: 1px solid var(--color-border);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(26, 27, 83, 0.1);
    border-color: var(--color-blue);
}

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

.service-card__icon svg {
    width: 100%;
    height: 100%;
}

.service-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.75rem;
}

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

/* --- Branchen Grid --- */
.branchen-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.branche-card {
    display: block;
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    text-align: center;
}

.branche-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(26, 27, 83, 0.1);
    border-color: var(--color-blue);
}

.branche-card__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.5rem;
    color: var(--color-blue);
}

.branche-card__icon svg {
    width: 100%;
    height: 100%;
}

.branche-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.75rem;
}

.branche-card__text {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.branche-card__link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-blue);
}

/* --- CTA Section --- */
.cta-section {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue-mid) 100%);
    color: var(--color-white);
}

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

.cta-box__title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.cta-box__text {
    font-size: 1.1rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-box__list {
    text-align: left;
    max-width: 500px;
    margin: 0 auto 2.5rem;
}

.cta-box__list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1rem;
    opacity: 0.9;
}

.cta-box__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #5EE7FF;
}

/* --- Vorteile Grid --- */
.vorteile {
    background: var(--color-bg-light);
}

.vorteile-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.vorteil-card {
    padding: 2rem;
}

.vorteil-card__number {
    font-family: var(--font-code);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-blue);
    opacity: 0.3;
    margin-bottom: 1rem;
    line-height: 1;
}

.vorteil-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.75rem;
}

.vorteil-card__text {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Ueber uns --- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.about-content__philosophy {
    font-family: var(--font-code);
    font-size: 1.1rem;
    color: var(--color-blue);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

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

.about-pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.pillar {
    padding: 1.5rem;
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--color-blue);
}

.pillar__icon {
    width: 2rem;
    height: 2rem;
    stroke: var(--color-blue);
    margin-bottom: 0.75rem;
    display: block;
}

.pillar__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.5rem;
}

.pillar__text {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-visual__card {
    border-radius: 24px;
    overflow: hidden;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1;
}

.about-visual__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

/* --- Blog Grid --- */
.blog {
    background: var(--color-bg-light);
}

/* --- Preise --- */
.preise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.preis-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

.preis-card--highlight {
    border-color: var(--color-blue);
    box-shadow: 0 8px 32px rgba(26, 27, 83, 0.1);
}

.preis-card__badge {
    display: inline-block;
    font-family: var(--font-code);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-blue);
    background: rgba(74, 144, 226, 0.08);
    padding: 0.2rem 0.6rem;
    border-radius: 2rem;
    width: fit-content;
}

.preis-card__header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.preis-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-navy);
}

.preis-card__price {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
}

.preis-card__amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-navy);
    line-height: 1;
}

.preis-card__unit {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.preis-card__features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    flex: 1;
}

.preis-card__features li {
    font-size: 0.9rem;
    color: var(--color-text);
    padding-left: 1.25rem;
    position: relative;
}

.preis-card__features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-blue);
    font-weight: 700;
}

/* --- Referenzen --- */
.referenzen-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.referenz-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.referenz-card__header {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.referenz-card__name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.3;
}

.referenz-card__size {
    font-size: 0.8rem;
    color: var(--color-blue);
    font-family: var(--font-code);
    letter-spacing: 0.03em;
}

.referenz-card__quote {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text);
    font-style: italic;
    margin: 0;
    padding-left: 1rem;
    border-left: 3px solid var(--color-blue);
}

.referenz-card__desc {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
}

/* --- Blog --- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.blog-card {
    display: block;
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(26, 27, 83, 0.1);
    border-color: var(--color-blue);
}

.blog-card__tag {
    display: inline-block;
    font-family: var(--font-code);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-blue);
    background: rgba(37, 143, 231, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.blog-card__text {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.blog-card__link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-blue);
}

/* --- Kontakt --- */
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.kontakt-info__item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.kontakt-info__icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--color-blue);
    margin-top: 0.2rem;
}

.kontakt-info__item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.25rem;
}

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

.kontakt-info__item a {
    color: var(--color-blue);
}

.kontakt-info__item a:hover {
    text-decoration: underline;
}

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

.kontakt-form__group--full {
    grid-column: 1 / -1;
}

.kontakt-form__label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 0.5rem;
}

.kontakt-form__input {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.kontakt-form__input:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(37, 143, 231, 0.15);
}

.kontakt-form__textarea {
    resize: vertical;
    min-height: 120px;
}

.kontakt-form .btn {
    grid-column: 1 / -1;
    justify-self: start;
}

/* --- Footer --- */
.footer {
    background: var(--color-navy);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
    height: 28px;
    filter: brightness(0) invert(1);
    margin-bottom: 1rem;
}

.footer__tagline {
    font-family: var(--font-code);
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 1rem;
}

.footer__desc {
    font-size: 0.9rem;
    opacity: 0.7;
    line-height: 1.6;
}

.footer__heading {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer__list li {
    margin-bottom: 0.75rem;
}

.footer__list a {
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity var(--transition);
}

.footer__list a:hover {
    opacity: 1;
    color: var(--color-blue);
}

.footer__bottom {
    padding-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.5;
}

/* --- Scroll Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in--visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .services-grid,
    .preise-grid,
    .referenzen-grid,
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .branchen-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .vorteile-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-pillars {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 4rem 0;
    }

    /* Mobile Navigation */
    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: var(--color-navy);
        flex-direction: column;
        align-items: flex-start;
        padding: 6rem 2rem 2rem;
        gap: 0;
        transition: right var(--transition);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.2);
        z-index: 1001;
    }

    .nav__menu--open {
        right: 0;
    }

    .nav__link,
    .header--scrolled .nav__link {
        color: var(--color-white);
        padding: 1rem 0;
        font-size: 1.1rem;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav__link--cta {
        margin-left: 0;
        margin-top: 1rem;
        text-align: center;
        border-bottom: none;
    }

    .nav__toggle--open .nav__toggle-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav__toggle--open .nav__toggle-line:nth-child(2) {
        opacity: 0;
    }

    .nav__toggle--open .nav__toggle-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Mobile overlay */
    .nav__overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition);
    }

    .nav__overlay--visible {
        opacity: 1;
        pointer-events: all;
    }

    /* Sections */
    .services-grid,
    .preise-grid,
    .referenzen-grid,
    .vorteile-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

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

    .kontakt-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .about-pillars {
        grid-template-columns: 1fr;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

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

@media (max-width: 480px) {
    .hero__logo {
        height: 44px;
    }

    .about-visual__card {
        max-width: 240px;
        padding: 3rem;
    }
}