:root {
    --bg-color: linear-gradient(120deg, #092261 0%, #02254e 60%, #0c0f2b 100%);
    --header-bg: #092261;
    --header-shadow: #031347 0px 6px 18px;
    --text-color: #ffffff;
    --block-bg: #1a2363;
}

body.light-mode {
    --bg-color: linear-gradient(120deg, #f5f7fa 0%, #c3cfe2 60%, #a0b6d6 100%);
    --header-bg: #f5f7fa;
    --header-shadow: #d1d9e6 0px 6px 18px;
    --text-color: #22223b;
    --block-bg: #f0f4fa;
    background: var(--bg-color);
    color: var(--text-color);
}

html, body {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    box-sizing: border-box;
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Arial, Helvetica, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    transition: background 0.6s;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--header-bg);
    box-shadow: 0 6px 24px 0 #0002, var(--header-shadow);
    padding: .5rem 1rem;
    border-radius: 0 0 18px 18px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
}

/* Hide scrollbar for Webkit browsers */
.header::-webkit-scrollbar {
    display: none;
}

.header h1 {
    margin: 0;
    font-size: 1.5rem;
}

.header-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: nowrap;
}

.header-buttons a {
    text-decoration: none;
}

.header-buttons a button,
.header-buttons > button {
    all: unset;
    background-color: var(--header-bg);
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 6px;
    padding: 0.5rem 0.9rem;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
    text-align: center;
}

.header-buttons a button:hover,
.header-buttons > button:hover {
    background-color: #e3eaf6;
    color: #162447;
}

body.dark-mode .header-buttons a button,
body.dark-mode .header-buttons > button {
    background-color: var(--header-bg);
    color: #fff;
}

body.dark-mode .header-buttons a button:hover,
body.dark-mode .header-buttons > button:hover {
    background-color: #1f4068;
    color: #fff;
}

.lang-switch-container {
    width: 100%;
    display: flex;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-right: 4.25rem;
}

.lang-switch {
    all: unset;
    background-color: #02254e;
    color: #fff;
    font-size: 1.15rem;
    font-weight: bold;
    border-radius: 8px;
    padding: 0.6rem 1.75rem 0.6rem 1.5rem;
    cursor: pointer;
    border: 2px solid #1f4068;
    box-shadow: 0 4px 16px #0001;
    letter-spacing: 1px;
    margin-right: -.25rem;
    transition: background 0.3s, color 0.3s, border 0.3s, box-shadow 0.3s;
}

.lang-switch:hover {
    background-color: #1f4068;
    color: #fff;
    border: 2px solid #2141ad;
    box-shadow: 0 6px 24px #0004;
}

body.light-mode .lang-switch {
    background-color: #e0e6f0;
    color: #22223b;
    border: 2px solid #c3cfe2;
}

body.light-mode .lang-switch:hover {
    background-color: #c3cfe2;
    color: #162447;
    border: 2px solid #a0b6d6;
}

main {
    max-width: 900px;
    margin: 2.5rem auto;
    padding: 0 1.2rem;
}

#home {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    background: var(--block-bg);
    box-shadow: 0 6px 32px #0002;
    padding: 2.5rem 2rem;
    margin: 4rem auto 3rem auto;
    border-radius: 22px 60px 22px 60px;
    min-height: 280px;
    max-width: 900px;
}

.home-texts {
    flex: 2 1 320px;
    min-width: 240px;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.2rem;
}

.home-texts h2 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.8rem;
    letter-spacing: 1px;
}

.home-name {
    font-size: 2.5rem;
    font-weight: bold;
    margin: -1rem 0 0.3rem 0;
    color: var(--text-color);
    text-align: center;
    letter-spacing: 1px;
}

.home-brief,
.home-extra {
    font-size: 1.08rem;
    margin: 0.5rem 0;
    color: var(--text-color);
    line-height: 1.5;
}

.cv-btn {
    padding: 0.9rem 2.2rem;
    font-size: 1.1rem;
    border-radius: 8px;
    background-color: #25305a;
    color: #fff;
    font-weight: bold;
    border: none;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
    margin-top: 1.2rem;
    box-shadow: 0 2px 8px #0001;
}

.cv-btn:hover {
    background-color: #1f4068;
    color: #fff;
}

body.light-mode .cv-btn {
    background-color: #e0e6f0;
    color: #22223b;
}

body.light-mode .cv-btn:hover {
    background-color: #c3cfe2;
    color: #162447;
}

.skills-cards {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 1.5rem;
    justify-content: center;
    align-items: stretch;
    width: 100%;
    margin-top: 2.5rem;
    overflow-x: auto;
    padding-bottom: 2rem;
}

.skills-block,
.skills-block-big {
    background: var(--block-bg);
    border-radius: 18px 48px 18px 48px;
    box-shadow: 0 8px 32px #0003;
    padding: 1.7rem 1.1rem 1.1rem 1.1rem;
    margin: 0;
    min-width: 180px;
    max-width: 320px;
    width: 260px;
    min-height: 340px;
    text-align: left;
    transition: background 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border: 2px solid #1f4068;
    position: relative;
}

.skills-title {
    margin: 0 0 0.7rem 0;
    font-size: 1.18rem;
    color: var(--text-color);
    font-weight: bold;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.skills-desc {
    font-size: 1.02rem;
    color: var(--text-color);
    line-height: 1.5;
    margin-top: 0.5rem;
    margin-bottom: 0.7rem;
}

.skills-usage {
    font-size: 0.98rem;
    color: #a3b1cc;
    font-style: italic;
    line-height: 1.5;
    margin-top: auto;
    padding-bottom: 1rem;
}

.skills-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 0.7rem;
    margin-right: 0.7rem;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px #0002);
    background: transparent;
    border-radius: 10px;
    display: block;
}

.projects-icon {
    width: 42px;
    height: 42px;
    margin-top: 3rem;
    margin-bottom: 0.7rem;
    margin-right: 0.7rem;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px #0002);
    background: transparent;
    border-radius: 10px;
    display: block;
}

.projects-cards {
    
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.7rem; 
    justify-content: center;
    align-items: stretch;
    width: 100%;
    margin-top: 2.5rem;
    overflow-x: auto;
    padding-bottom: 2rem;
}

.project-block {
    display: flex;
    margin: 0 1rem;
    flex-direction: column;
    background: var(--block-bg);
    border-radius: 18px 48px 18px 48px;
    box-shadow: 0 8px 32px #0003;
    padding: 2.2rem 1.5rem 1.5rem 1.5rem;
    max-width: 400px;
    width: 100%;
    min-width: 240px;
    min-height: 400px;
    border: 2px solid #1f4068;
    position: relative;
}

.project-title {
    margin: -2.5rem 4rem 0.7rem 0;
    font-size: 1.18rem;
    color: var(--text-color);
    font-weight: bold;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.project-subtitle {
    margin: -2.75rem 0 1rem 4rem;
    font-size: 1.18rem;
    color: var(--text-color);
    font-weight: bold;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.project-desc {
    font-size: 1.08rem;
    color: var(--text-color);
    line-height: 1.5;
    margin-bottom: 1.2rem;
    width: 100%;
}

.project-usage {
    font-size: 0.98rem;
    color: #a3b1cc;
    font-style: italic;
    line-height: 1.5;
    margin-top: auto;
}

.projects-cards img.skills-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 0.7rem;
    margin-right: 0.7rem;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px #0002);
    background: transparent;
    border-radius: 10px;
    display: block;
}

.profile-img-home {
    width: 240px;
    height: 240px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 6px 32px 0 #0003, 0 2px 12px #0002;
    margin: 1.5rem 0 0 2.5rem;
    background: #172150;
    display: block;
    transition: box-shadow 0.3s, background 0.3s;
}

body.light-mode .profile-img-home {
    background: #c3cfe2;
}

@media (max-width: 900px) {
    .profile-img-home {
        margin: 2rem auto 0 auto;
        display: block;
    }
}

/* Responsive styles */
@media (max-width: 1200px) {
    .skills-cards {
        gap: 1rem;
    }
    .skills-block,
    .skills-block-big {
        min-width: 150px;
        max-width: 220px;
        width: 180px;
        padding: 1.1rem 0.7rem 0.9rem 0.7rem;
        border-radius: 12px 32px 12px 32px;
    }
    .projects-cards {
        gap: 1rem;
    }
    .project-block {
        min-width: 150px;
        max-width: 220px;
        width: 180px;
        padding: 1.1rem 0.7rem 0.9rem 0.7rem;
        border-radius: 12px 32px 12px 32px;
    }
}

@media (max-width: 900px) {
    main {
        max-width: 100vw;
        padding: 0 0.5rem;
    }
    #home {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
        padding: 1.5rem 0.5rem;
        min-height: 0;
        max-width: 98vw;
        border-radius: 18px;
        margin: 2rem auto 1.5rem auto;
    }
    .home-texts {
        align-items: center;
        max-width: 100%;
        text-align: center;
        padding: 0 0.5rem;
    }
    .skills-cards {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        width: 100%;
    }
    .skills-block,
    .skills-block-big {
        max-width: 98vw;
        min-width: 0;
        width: 100%;
    }
    .projects-cards {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        width: 100%;
    }
    .project-block {
        max-width: 98vw;
        min-width: 0;
        width: 100%;
    }
}

@media (max-width: 600px) {
    main {
        max-width: 100vw;
        padding: 0 0.2rem;
    }
    #contact {
        font-size: 1.1rem;
        padding: 0;
        min-height: 0;
    }
    .header {
        display: flex;
        flex-direction: row;
        align-items: center;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 0.18rem 1rem;
        min-width: 0;
        border-radius: 0 0 18px 18px;
        height: 52px;
        max-height: 52px;
        background-color: var(--header-bg);
        box-shadow: 0 6px 24px 0 #0002, var(--header-shadow);
        backdrop-filter: none;
        font-size: 1rem;
    }
    .header-buttons {
        gap: 0.5rem;
        flex-wrap: nowrap;
        width: auto;
        justify-content: flex-end;
    }
    .header-buttons a button,
    .header-buttons > button {
        all: unset;
        background-color: var(--header-bg);
        color: var(--text-color);
        font-size: 1.1rem;
        font-weight: bold;
        border-radius: 6px;
        padding: 0.5rem 0.9rem;
        cursor: pointer;
        transition: background 0.3s, color 0.3s;
        text-align: center;
    }
    .header-buttons a button:hover,
    .header-buttons > button:hover {
        background-color: #e3eaf6;
        color: #162447;
    }
    body.dark-mode .header-buttons a button,
    body.dark-mode .header-buttons > button {
        background-color: var(--header-bg);
        color: #fff;
    }
    body.dark-mode .header-buttons a button:hover,
    body.dark-mode .header-buttons > button:hover {
        background-color: #1f4068;
        color: #fff;
    }
    .mode-switch {
        background: #fff;
        color: #2141ad;
        border-radius: 18px;
        font-size: 1.1rem;
        font-weight: 600;
        padding: 0.32rem 0.85rem;
        margin-left: 0.2rem;
        box-shadow: 0 1px 6px #0001;
        border: none;
        transition: background 0.3s, color 0.3s;
    }
    .mode-switch:hover {
        background: #e3eaf6;
        color: #162447;
    }
}

.project-btn {
    display: block;
    align-items: left;
    padding: 0.9rem 2.2rem;
    font-size: 1.1rem;
    border-radius: 8px;
    background-color: #25305a;
    color: #fff;
    font-weight: bold;
    border: none;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
    box-shadow: 0 2px 8px #0001;
}

.project-btn:hover {
    background-color: #1f4068;
    color: #fff;
}

body.light-mode .project-btn {
    background-color: #e0e6f0;
    color: #22223b;
}

body.light-mode .project-btn:hover {
    background-color: #c3cfe2;
    color: #162447;
}

.contact-usage {
    font-size: 1rem;
    color: #a3b1cc;
    font-style: italic;
    margin-top: 2rem;
    text-align: center;
    width: 100%;
}

.contact-usage a {
    color: #2141ad;
    transition: color 0.3s;
    font-style: normal;
    word-break: break-all;
}

body.light-mode .contact-usage a {
    color: #162447;
}

.contact-usage-note {
    margin-top: 0.7rem;
    font-size: 0.98rem;
    color: #888;
    font-style: normal;
    text-align: center;
}

#contact {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    width: 100%;
    background: none;
    font-weight: bold;
    font-size: 1.5rem;
}

.contact-form-block {
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--block-bg);
    border-radius: 18px 48px 18px 48px;
    box-shadow: 0 8px 32px #0003;
    padding: 2.2rem 1.5rem 1.5rem 1.5rem;
    max-width: 400px;
    width: 100%;
    min-width: 240px;
    min-height: 400px;
    border: 2px solid #1f4068;
    position: relative;
}

.contact-form-title {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    width: 100%;
    text-align: center;
}

.contact-form-icon {
    width: 48px;
    height: 48px;
    margin: 0;
    display: inline-block;
    -webkit-filter: invert(100%);
    filter: invert(100%);
}

body.light-mode .contact-form-icon {
    filter: none;
}

.contact-form-desc {
    font-size: 1.08rem;
    color: var(--text-color);
    line-height: 1.5;
    margin-bottom: 1.2rem;
    text-align: center;
    width: 100%;
}

.contact-form-block form {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    align-items: center;
    width: 100%;
    max-width: 350px;
}

.contact-form-block input,
.contact-form-block textarea {
    padding: 0.7rem 1rem;
    border-radius: 8px;
    border: 2px solid #2141ad;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
    background: #f5f7fa;
    color: #22223b;
    margin-bottom: 0.2rem;
    outline: none;
    transition: border 0.3s, background 0.3s, color 0.3s;
}

.contact-form-block input:focus,
.contact-form-block textarea:focus {
    border-color: #25305a;
    background: #e0e6f0;
}

body:not(.light-mode) .contact-form-block input,
body:not(.light-mode) .contact-form-block textarea {
    background: #ffffff;
    color: #000000;
    border: 2px solid #a0b6d6;
}

body:not(.light-mode) .contact-form-block input:focus,
body:not(.light-mode) .contact-form-block textarea:focus {
    border-color: #fff;
    background: #25305a;
    color: #fff;
}

.contact-form-usage {
    font-size: 1rem;
    color: #a3b1cc;
    font-style: italic;
    margin-top: 2rem;
    text-align: center;
    width: 100%;
}

.contact-form-usage a {
    color: #ffffff;
    transition: color 0.3s;
    font-style: normal;
    word-break: break-all;
}

body.light-mode .contact-form-usage a {
    color: #162447;
}

.contact-form-usage-note {
    margin-top: 0.7rem;
    font-size: 0.98rem;
    color: #888;
    font-style: normal;
    text-align: center;
}

/* Responsive styles to mobile version */
@media (max-width: 600px) {
    #home,
    .skills-block,
    .skills-block-big,
    .project-block,
    .contact-form-block {
        padding: 1.7rem 1.2rem;
        margin: 0.7rem auto 0.7rem auto;
        max-width: 80vw;
        border-radius: 12px 22px 12px 22px;
        box-shadow: 0 3px 12px #0002;
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }
    .home-texts {
        padding: 1.5rem 0.5rem;
        gap: 1.1rem;
        font-size: 1.22rem;
        width: 100%;
    }
    .skills-title,
    .skills-desc,
    .project-title,
    .project-subtitle,
    .project-desc,
    .contact-form-desc {
        font-size: 1.18rem;
    }
    .project-btn {
        padding-bottom: 2rem;
    }
}

@media (max-width: 600px) {
    #home {
        padding: 1.7rem 1.2rem;
        margin: 0.7rem auto 0.7rem auto;
        max-width: 85vw;
        border-radius: 12px 22px 12px 22px;
        box-shadow: 0 3px 12px #0002;
    }
    .home-texts {
        padding: 1.2rem 1.2rem;
        gap: 1rem;
        font-size: 1.18rem;
    }
    .skills-block,
    .skills-block-big {
        padding: 2rem 1.2rem;
    }
    .project-block {
        padding: 1.7rem 1.2rem;
    }
    .contact-form-block {
        padding: 1.7rem 1.2rem;
    }
    .project-btn {
        padding-bottom: 1.7rem;
        margin-bottom: 1rem;
    }
}

@media (max-width: 600px) {
    #home {
        padding: 1rem 0.7rem;
        margin: 0.7rem auto 0.7rem auto;
        max-width: 85vw;
        border-radius: 12px 22px 12px 22px;
        box-shadow: 0 3px 12px #0002;
    }
    .home-texts {
        padding: 0.5rem 0.7rem;
        gap: 0.7rem;
        font-size: 1.15rem;
    }
    .home-texts h2 {
        font-size: 1.35rem;
    }
    .home-name {
        font-size: 1.7rem;
    }
    .home-brief,
    .home-extra {
        font-size: 1.08rem;
    }
    .skills-title {
        font-size: 1.4rem;
    }
    .skills-desc {
        font-size: 1.2rem;
    }
    .skills-usage {
        font-size: 1.15rem;
    }
    .project-title,
    .project-subtitle {
        font-size: 1.15rem;
    }
    .project-desc {
        font-size: 1.12rem;
    }
    .contact-form-desc {
        font-size: 1.12rem;
    }
    .project-btn {
        padding-bottom: 1.5rem;
    }
}

@media (max-width: 600px) {
    .header {
        padding: 0.15rem 0.15rem;
        font-size: 0.85rem;
        min-width: 0;
        border-radius: 0 0 10px 10px;
        height: 48px;
        max-height: 48px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .header h1 {
        font-size: 1.2rem;
        margin-right: 0.5rem;
    }
    .header-buttons {
        gap: 0.2rem;
    }
    .header-buttons a button,
    .header-buttons > button {
        font-size: 0.85rem;
        padding: 0.2rem 0.5rem;
        border-radius: 4px;
    }
    .home-texts {
        align-items: flex-start;
        text-align: left;
        padding: 0 0.5rem;
        max-width: 100%;
    }
    .home-texts h2,
    .home-name,
    .home-brief,
    .home-extra {
        text-align: left;
        width: 100%;
    }
}

@media (max-width: 600px) {
    body {
        scrollbar-width: none; /* Firefox */
        -ms-overflow-style: none; /* Internet Explorer and Edge */
        background: linear-gradient(120deg, #092261 0%, #02254e 60%, #0c0f2b 150%);
        transition: background 0.6s;
    }
    body::-webkit-scrollbar {
        display: none; /* Chrome, Safari, Opera */
    }
    body.light-mode {
        background: linear-gradient(120deg, #f5f7fa 0%, #c3cfe2 60%, #a0b6d6 150%);
        transition: background 0.6s;
    }
}

@media (max-width: 600px) {
    .header {
        position: relative;
    }
    .header::before {
        display: none;
    }
    .header::after {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        width: 24px;
        height: 100%;
        pointer-events: none;
        z-index: 2;
        background: linear-gradient(to left, rgba(9,34,97,0.9) 80%, transparent 100%);
    }
}

@media (max-width: 600px) {
    .header-scroll-wrapper {
        position: relative;
        width: 100vw;
        max-width: 100vw;
        overflow: hidden;
        height: 48px;
    }
    .header {
        width: 100vw;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        height: 48px;
        max-height: 48px;
    }
    .header-scroll-wrapper::after {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        width: 24px;
        height: 100%;
        pointer-events: none;
        z-index: 10;
        background: linear-gradient(to left, rgba(9,34,97,0.9) 80%, transparent 100%);
    }
}

@media (max-width: 600px) {
    .header::after,
    .header-scroll-wrapper::after {
        display: none !important;
        content: none;
    }
}

@media (max-width: 600px) {
    body::before {
        content: "";
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 200vh;
        z-index: -1;
        background: linear-gradient(120deg, #092261 0%, #02254e 60%, #0c0f2b 150%);
        transition: background 0.6s;
        pointer-events: none;
    }
    body.light-mode::before {
        background: linear-gradient(120deg, #f5f7fa 0%, #c3cfe2 60%, #a0b6d6 150%);
    }
    body {
        background: none !important;
    }
}