:root {
    --primary-color: #4a5e73;
    --secondary-color: #5c6773;
    --background-color: #1a1e26;
    --surface-color: #252b36;
    --text-color: #e2e8f0;
    --accent-color: #5a6b7f;
    --error-color: #b23c3c;
    --border-radius: 16px;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    --url-bg: #2f3744;
    --button-bg: #5a6b7f;
    --button-text: #e2e8f0;
    --button-hover-bg: #6b7b8f;
    --border-color: rgba(255, 255, 255, 0.15);
    --placeholder-color: #94a3b8;
    --secondary-text: #cbd5e1;
    --input-bg: #2f3744;
    --qr-bg: #000000;
    --qr-fg: #ffffff;
    --gradient: linear-gradient(135deg, #4a5e73, #5a6b7f);
    --icon-color-1: #60a5fa;
    --icon-color-2: #34d399;
    --icon-color-3: #f87171;
}

[data-theme="light"] {
    --primary-color: #80a3ee;
    --secondary-color: #9ca3af;
    --background-color: #f9fafb;
    --surface-color: #ffffff;
    --text-color: #111827;
    --accent-color: #4b5563;
    --error-color: #dc2626;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    --url-bg: #e5e7eb;
    --button-bg: #e5e7eb;
    --button-text: #111827;
    --button-hover-bg: #d1d5db;
    --border-color: rgba(0, 0, 0, 0.15);
    --placeholder-color: #6b7280;
    --secondary-text: #4b5563;
    --input-bg: #f3f4f6;
    --qr-bg: #ffffff;
    --qr-fg: #000000;
    --gradient: linear-gradient(135deg, #80a3ee, #9ca3af);
    --icon-color-1: #2563eb;
    --icon-color-2: #059669;
    --icon-color-3: #dc2626;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1000px;
    width: 100%;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 40px;
    margin: 32px auto;
    border: 1px solid var(--border-color);
    transition: box-shadow 0.3s ease;
}

.container:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

h1 {
    font-size: 2.25rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-color);
    background: var(--gradient);
    -webkit-background-clip: text;
}

.theme-toggle {
    position: fixed;
    top: 24px;
    right: 24px;
    background: var(--gradient);
    color: var(--button-text);
    padding: 10px 20px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: box-shadow 0.3s ease;
    z-index: 1000;
    touch-action: manipulation;
}

.theme-toggle:hover {
    box-shadow: var(--shadow);
}

.theme-toggle:active {
    transform: scale(0.98);
}

.theme-toggle .icon {
    font-size: 1.3rem;
}

form {
    display: flex;
    gap: 16px;
    max-width: 800px;
    margin: 0 auto 2.5rem;
    align-items: center;
}

input[type="text"] {
    flex: 1;
    padding: 14px 20px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-color);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 94, 115, 0.2);
    outline: none;
}

input[type="text"]::placeholder {
    color: var(--placeholder-color);
    opacity: 0.8;
}

button[type="submit"] {
    background: var(--gradient);
    color: var(--button-text);
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: box-shadow 0.3s ease;
}

button[type="submit"]:hover {
    box-shadow: var(--shadow);
}

button[type="submit"]:active {
    transform: scale(0.98);
}

.result {
    margin-top: 2.5rem;
    background: var(--input-bg);
    padding: 24px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.result h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.result .url {
    display: flex;
    align-items: center;
    padding: 12px;
    background: var(--surface-color);
    border-radius: 10px;
    margin: 12px 0;
    border: 1px solid var(--border-color);
}

.result .url input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-color);
    font-size: 0.95rem;
    padding: 10px;
}

.copy-btn {
    background: var(--gradient);
    color: var(--button-text);
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: box-shadow 0.3s ease;
}

.copy-btn:hover {
    box-shadow: var(--shadow);
}

.copy-btn:active {
    transform: scale(0.98);
}

.copy-btn i {
    margin-right: 6px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 1.5rem 0;
    padding: 16px;
    background: var(--surface-color);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.qr-container img {
    max-width: 180px;
    height: auto;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.qr-container img:hover {
    transform: scale(1.05);
}

.result.error {
    color: var(--error-color);
    text-align: center;
    font-weight: 500;
    padding: 16px;
    background: var(--surface-color);
    border-radius: 10px;
    border: 1px solid var(--error-color);
}

.stats-btn {
    display: inline-block;
    background: var(--gradient);
    color: var(--button-text);
    padding: 14px 28px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: box-shadow 0.3s ease;
}

.stats-btn:hover {
    box-shadow: var(--shadow);
}

.stats-btn:active {
    transform: scale(0.98);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeInModal 0.3s ease;
}

.modal-content {
    background: var(--surface-color);
    padding: 32px;
    border-radius: var(--border-radius);
    max-width: 450px;
    width: 90%;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
}

.modal-content img {
    max-width: 320px;
    height: auto;
    border-radius: 12px;
    margin-bottom: 20px;
}

.close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
}

.close-btn:hover {
    color: var(--primary-color);
    transform: rotate(90deg);
}

.download-btn {
    background: var(--gradient);
    color: var(--button-text);
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: box-shadow 0.3s ease;
}

.download-btn:hover {
    box-shadow: var(--shadow);
}

.download-btn:active {
    transform: scale(0.98);
}

.download-btn i {
    margin-right: 6px;
}

.notification {
    position: fixed;
    top: 24px;
    right: 90px;
    background: var(--gradient);
    color: var(--button-text);
    padding: 12px 24px;
    border-radius: 12px;
    display: none;
    box-shadow: var(--shadow);
    font-size: 0.95rem;
    opacity: 0;
    animation: slideIn 0.3s forwards;
    z-index: 1000;
}

.notification.fade-out {
    animation: slideOut 2s forwards;
}

.description {
    background: var(--url-bg);
    padding: 32px;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    text-align: left;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s ease;
}

.description:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.description h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--button-text);
    letter-spacing: 0.05em;
}

.description p {
    font-size: 1rem;
    color: var(--button-text);
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

.description ul {
    list-style: none;
    padding: 0;
    margin-bottom: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.description ul li {
    font-size: 0.95rem;
    color: var(--button-text);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: transform 0.2s ease, background 0.2s ease;
}

.description ul li:hover {
    transform: translateX(8px);
    background: rgba(255, 255, 255, 0.2);
}

.description ul li i {
    font-size: 1.2rem;
    transition: transform 0.2s ease;
}

.description ul li:hover i {
    transform: scale(1.2);
}

.description ul li:nth-child(1) i { color: var(--icon-color-1); }
.description ul li:nth-child(2) i { color: var(--icon-color-2); }
.description ul li:nth-child(3) i { color: var(--icon-color-3); }

.description.hidden {
    display: none;
}

.share-section {
    margin-top: 2rem;
    padding: 24px;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow);
}

.share-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-color);
}

.share-section p {
    font-size: 0.95rem;
    color: var(--secondary-text);
    margin-bottom: 1.5rem;
    max-width: 570px;
    margin-left: auto;
    margin-right: auto;
}

.share-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: opacity 0.3s ease, transform 0.2s ease;
}

.share-btn:hover {
    opacity: 0.8;
}

.share-btn i {
    font-size: 1.2rem;
    color: #fff;
}

.share-btn.telegram {
    background: #0088cc;
}

.share-btn.whatsapp {
    background: #25d366;
}

.share-btn.vk {
    background: #4a76a8;
}

.share-btn.link {
    background: var(--primary-color);
}

.decode-link {
    margin-top: 1.5rem;
    padding: 16px;
    background: var(--url-bg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
    text-align: center;
    transition: transform 0.3s ease, background 0.3s ease;
}

.decode-link p {
    font-size: 1rem;
    color: var(--secondary-text);
    margin-bottom: 1rem;
}

.decode-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-color);
    color: var(--button-text);
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: background 0.3s ease, transform 0.2s ease;
}

.decode-link a:hover {
    background: var(--button-hover-bg);
}

.decode-link a i {
    font-size: 1.2rem;
}

.compact-total-links {
    margin: 0 auto;
    padding: 3px 0px;
    background: var(--surface-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
    max-width: 300px;
    font-size: 0.95rem;
    color: var(--secondary-text);
    transition: box-shadow 0.2s ease;
}

.compact-total-links:hover {
    box-shadow: var(--shadow);
}

.compact-total-links span {
    font-weight: 600;
    color: var(--primary-color);
}

.import-section {
    margin: 2rem 0;
    padding: 20px;
    background: var(--input-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.import-section p {
    font-size: 0.95rem;
    color: var(--secondary-text);
    margin-bottom: 1rem;
}

.import-section input[type="file"] {
    padding: 8px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 100%;
    box-sizing: border-box;
    color: var(--text-color);
    font-size: 0.9rem;
}

.import-section button {
    background: var(--gradient);
    color: var(--button-text);
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.3s ease;
}

.import-section button:hover {
    background: linear-gradient(135deg, #8fa3c1, #6a85a3);
}

.import-section button i {
    margin-right: 5px;
}

.import-section.hidden .import-content {
    display: none;
}

.import-section .toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 1rem;
    background: var(--input-bg);
    border: none;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    transition: background 0.3s ease;
}

.import-section .toggle-btn:hover {
    background: var(--primary-color);
    color: var(--button-text);
}

.import-section .toggle-btn i {
    transition: transform 0.3s ease;
}

.import-section.hidden .toggle-btn i {
    transform: rotate(-90deg);
}

.import-content {
    padding: 1rem;
}

.import-content form {
    display: flex;
    gap: 12px;
    align-items: center;
}

.result.import-result {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 12px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
}

.import-result table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    color: var(--text-color);
}

.import-result th, .import-result td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.import-result th {
    background: var(--input-bg);
    font-weight: 600;
    color: var(--text-color);
}

.import-result tr:hover {
    background: var(--primary-color);
    color: var(--button-text);
}

.import-result .url {
    display: flex;
    align-items: center;
    gap: 8px;
}

.import-result input {
    flex: 1;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

.import-result .copy-btn {
    background: var(--gradient);
    padding: 8px 12px;
    border-radius: 8px;
    font-weight: 600;
    color: var(--button-text);
    border: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.3s ease;
}

.import-result .copy-btn:hover {
    background: linear-gradient(135deg, #8fa3c1, #6a85a3);
}

@keyframes fadeInModal {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideOut {
    0% { opacity: 1; transform: translateY(0); }
    80% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(-20px); }
}

/* Media Queries */
@media (max-width: 768px) {
    .container {
        padding: 24px;
        margin: 16px auto;
    }

    h1 {
        font-size: 1.75rem;
    }

    form {
        flex-direction: column;
        gap: 12px;
    }

    input[type="text"], button[type="submit"] {
        padding: 12px;
        font-size: 0.95rem;
    }

    .qr-container img {
        max-width: 150px;
    }

    .modal-content {
        max-width: 85%;
        padding: 24px;
    }

    .modal-content img {
        max-width: 280px;
    }

    .notification {
        top: 16px;
        right: 70px;
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .description {
        padding: 24px;
    }

    .description h2 {
        font-size: 1.5rem;
    }

    .description p {
        font-size: 0.9rem;
    }

    .description ul {
        grid-template-columns: 1fr;
    }

    .description ul li {
        font-size: 0.9rem;
    }

    .share-section, .decode-link {
        padding: 16px;
    }

    .share-section h2 {
        font-size: 1.3rem;
    }

    .share-section p, .decode-link p {
        font-size: 0.9rem;
    }

    .share-btn {
        width: 36px;
        height: 36px;
    }

    .share-btn i {
        font-size: 1.1rem;
    }

    .decode-link a {
        padding: 8px 16px;
        font-size: 0.95rem;
    }

    .compact-total-links {
        padding: 10px 16px;
        font-size: 0.9rem;
    }

    .import-section {
        padding: 15px;
    }

    .import-content form {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 600px) {
    .import-result table, .import-result thead, .import-result tbody, .import-result th, .import-result td, .import-result tr {
        display: block;
    }

    .import-result th {
        display: none;
    }

    .import-result td {
        display: flex;
        flex-direction: column;
        gap: 8px;
        padding: 12px;
        border-bottom: none;
        position: relative;
    }

    .import-result td:before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-color);
        margin-bottom: 4px;
    }

    .import-result td[data-label="Действие"] {
        align-items: center;
        flex-direction: row;
        justify-content: flex-start;
    }

    .import-result .url {
        flex-direction: column;
        align-items: stretch;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 16px;
        margin: 8px auto;
    }

    h1 {
        font-size: 1.5rem;
    }

    input[type="text"], button[type="submit"] {
        font-size: 0.9rem;
        padding: 10px;
    }

    .qr-container img {
        max-width: 120px;
    }

    .modal-content img {
        max-width: 240px;
    }

    .notification {
        right: 60px;
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .description {
        padding: 16px;
    }

    .description h2 {
        font-size: 1.25rem;
    }

    .description p {
        font-size: 0.85rem;
    }

    .description ul li {
        font-size: 0.85rem;
    }

    .share-section, .decode-link {
        padding: 12px;
    }

    .share-btn {
        width: 32px;
        height: 32px;
    }

    .share-btn i {
        font-size: 1rem;
    }

    .decode-link a {
        font-size: 0.9rem;
    }

    .compact-total-links {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .result .url input {
        word-break: break-word;
        width: 100%;
    }
}