:root[data-theme="light"] {
    --background-color: #f4f7f9;
    --background-gradient: linear-gradient(to bottom right, #e6e9f0, #f4f7f9);
    --text-color: #333;
    --header-color: #1a2533;
    --accent-color: #2a9d8f;
    --accent-color-light: #e9f5f4;
    --secondary-text-color: #6c757d;
    --widget-background-color: #ffffff;
    --sidebar-background-color: #fdfdfd;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.08);
}

:root[data-theme="dark"] {
    --background-color: #121212;
    --background-gradient: linear-gradient(to bottom right, #1a202c, #121212);
    --text-color: #e0e0e0;
    --header-color: #ffffff;
    --accent-color: #26a9e0;
    --accent-color-light: #2a3b4c;
    --secondary-text-color: #a0a0a0;
    --widget-background-color: #1e1e1e;
    --sidebar-background-color: #242424;
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.25);
}

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

body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    padding: 10px;
    background: var(--background-gradient, var(--background-color));
    color: var(--text-color);
    transition: background-color 0.4s, color 0.4s;
}

.container {
    max-width: 1200px;
    margin: 10px auto;
    display: grid;
    grid-template-columns: 1fr 340px;
    grid-template-rows: auto 1fr;
    grid-template-areas:
        "header sidebar"
        "main sidebar";
    gap: 30px;
    padding: 30px;
    background-color: var(--widget-background-color);
    border-radius: 15px;
    box-shadow: 0 6px 25px var(--shadow-color);
    border: 1px solid var(--border-color);
}

h1, h2, h3 {
    color: var(--header-color);
    font-weight: 600;
}

h2 {
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 8px;
    margin-bottom: 20px;
    font-size: 1.5em;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--header-color);
    text-decoration: none;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 5px;
}

.sidebar-header h2 {
    margin: 0;
    border: none;
    padding-bottom: 0;
}

.header-buttons {
    display: flex;
    gap: 8px;
}

.icon-button {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 0;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9em;
    text-decoration: none;
}

@media (hover: hover) {
    .icon-button:hover {
        background-color: var(--accent-color);
        color: #fff;
        border-color: var(--accent-color);
    }
}

.resume-header,
.resume-main,
.resume-sidebar {
    min-width: 0;
    overflow-wrap: break-word;
}

.resume-header {
    grid-area: header;
    display: flex;
    align-items: center;
    gap: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.profile-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-color);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.header-text h1 {
    font-size: 2.5em;
    margin-bottom: 5px;
}

.header-text p {
    font-size: 1.3em;
    color: var(--secondary-text-color);
    font-weight: 500;
}

.resume-main {
    grid-area: main;
}

.resume-main section {
    margin-bottom: 25px;
}

.about-me p {
    text-align: justify;
    font-size: 1em;
}

.job, .education-item, .achievement-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px dashed var(--border-color);
}

.job:last-child, .education-item:last-child, .achievement-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.job h3, .education-item h3 {
    color: var(--accent-color);
    margin-bottom: 4px;
    font-size: 1.2em;
}

.job-period, .education-period {
    font-style: italic;
    color: var(--secondary-text-color);
    margin-bottom: 10px;
    font-size: 0.9em;
}

.job ul, .achievement-item ul {
    list-style-type: none;
    padding-left: 0;
    margin-top: 10px;
}

.job ul li, .achievement-item ul li {
    padding-left: 25px;
    margin-bottom: 8px;
    position: relative;
}

.job ul li:before {
    content: "▸";
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 5px;
    font-size: 1.1em;
}

.achievement-item ul li:before {
    content: "✓";
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 5px;
    font-size: 1.1em;
}

.education-item p {
    margin-bottom: 5px;
}

.education-item strong {
    color: var(--text-color);
    font-weight: 600;
}

.resume-sidebar {
    grid-area: sidebar;
    background-color: var(--sidebar-background-color);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.resume-sidebar section {
    margin-bottom: 25px;
}

.resume-sidebar section:last-child {
    margin-bottom: 0;
}

.resume-sidebar h2 {
    font-size: 1.3em;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
}

.contacts ul, .skills ul, .languages ul {
    list-style: none;
    padding-left: 0;
}

.contacts li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 1em;
}

.contacts i {
    color: var(--accent-color);
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    font-size: 1.1em;
}

.skills li {
    background-color: var(--accent-color-light);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 8px;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
}

.skills li:hover {
    transform: translateX(4px);
    box-shadow: 0 3px 10px var(--shadow-color);
    border-left: 4px solid var(--accent-color);
}

.languages li {
    margin-bottom: 10px;
    padding: 8px 0;
    font-size: 1em;
}

@media (max-width: 992px) {
    .container {
        grid-template-columns: 1fr;
        grid-template-areas:
            "header"
            "main"
            "sidebar";
        padding: 20px;
        gap: 25px;
    }

    .resume-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 5px;
    }
    .container {
        padding: 15px;
    }

    .profile-photo {
        width: 110px;
        height: 110px;
    }

    .header-text h1 {
        font-size: 2em;
    }
}

@media print {
    .header-buttons {
        display: none;
    }

    .container, .resume-sidebar {
        box-shadow: none;
        border: none;
    }
}