:root {
    --primary: #0088cc;
    --primary-light: #33a1ff;
    --primary-dark: #0070a8;
    --secondary: #31a24c;
    --danger: #f23645;
    --warning: #ffa500;
    --success: #31a24c;
    --info: #0088cc;
    --light: #f5f5f5;
    --lighter: #ffffff;
    --dark: #1c1c1c;
    --gray: #999999;
    --gray-light: #e8e8e8;
    --gray-lighter: #f0f0f0;

    --border-radius: 12px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-xs: 12px;
    --line-height-base: 1.5;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.2);

    --transition: all 0.3s ease;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--dark);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-md);
}

small {
    font-size: var(--font-size-xs);
}

.fw-600 {
    font-weight: 600;
}

/* ===== LAYOUT ===== */
.main-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 1400px;
    margin: 0 auto;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
}

.content-center {
    background: var(--lighter);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
}
.sidebar-content{
    position: absolute;
}
.sidebar-left,
.sidebar-right {
    position: sticky;
    top: var(--spacing-md);
    height: fit-content;
}

/* ===== ADVERTISEMENT BANNERS ===== */
.ad-banner {
    background: var(--gray-lighter);
    border: 2px dashed var(--gray-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.ad-top {
    width: 100%;
    height: 90px;
    margin-bottom: var(--spacing-lg);
}

.ad-vertical {
    width: 100%;
    height: 600px;
    position: sticky;
    top: var(--spacing-md);
}

.ad-bottom-1,
.ad-bottom-2 {
    height: 90px;
    margin-bottom: var(--spacing-md);
}

.ad-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: linear-gradient(45deg, #f0f0f0 25%, transparent 25%, transparent 75%, #f0f0f0 75%, #f0f0f0),
                linear-gradient(45deg, #f0f0f0 25%, transparent 25%, transparent 75%, #f0f0f0 75%, #f0f0f0);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    background-color: #fafafa;
}

.ads-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

/* ===== HEADER ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    padding: var(--spacing-xl);
    text-align: center;
}

.logo {
    font-size: 2.1rem;
    font-weight: 700;
    margin: 0 0 var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    text-align: center;
}

.logo i {
    font-size: 2.2rem;
}

.tagline {
    font-size: 1.1rem;
    opacity: 0.95;
    margin: 0;
}

/* ===== FORMS ===== */
.upload-section,
.results-section {
    padding: var(--spacing-lg);
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.section-title i {
    color: var(--primary);
    font-size: 1.3rem;
}

.file-count {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 400;
}

/* ===== DROP ZONE ===== */
.drop-zone {
    border: 3px dashed var(--gray-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--gray-lighter);
}

.drop-zone:hover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 136, 204, 0.05), rgba(51, 161, 255, 0.05));
}

.drop-zone.dragover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 136, 204, 0.1), rgba(51, 161, 255, 0.1));
    transform: scale(1.02);
}

.drop-zone-content i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.drop-zone-content h3 {
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.drop-zone-content p {
    margin: 0 0 var(--spacing-sm);
    color: var(--gray);
}

/* ===== FILE PREVIEW ===== */
.preview-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-md);
}

.file-preview {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--gray-lighter);
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.file-preview:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.file-preview img {
    width: 100%;
    height: 60%;
    object-fit: cover;
    background: var(--gray-lighter);
}

.file-preview-info {
    flex: 1;
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: white;
}

.file-preview-name {
    font-size: var(--font-size-xs);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-preview-size {
    font-size: var(--font-size-xs);
    color: var(--gray);
}

.remove-file {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(242, 54, 69, 0.9);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: var(--transition);
    opacity: 0;
}

.file-preview:hover .remove-file {
    opacity: 1;
}

.remove-file:hover {
    background: var(--danger);
    transform: scale(1.1);
}

/* ===== FORM CONTROLS ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--dark);
    margin: 0;
}

.form-control,
.form-control-lg,
.form-control-sm {
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: inherit;
    transition: var(--transition);
}

.form-control:focus,
.form-control-lg:focus,
.form-control-sm:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 136, 204, 0.1);
    outline: none;
}

.form-control-lg {
    padding: 1rem 1.25rem;
    font-size: 1rem;
}

.form-control-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.input-group .form-control {
    flex: 1;
}

.input-group .btn {
    padding: 0.75rem 1.25rem;
}

.resize-inputs {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: end;
    gap: var(--spacing-sm);
}

.resize-separator {
    text-align: center;
    font-weight: 600;
    color: var(--gray);
    padding-bottom: 0.75rem;
}

/* ===== CAPTCHA ===== */
.captcha-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-lighter);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.captcha-image-wrapper {
    display: flex;
    justify-content: center;
    background: white;
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 2px solid var(--gray-light);
}

.captcha-image {
    max-width: 100%;
    height: auto;
    max-height: 120px;
}

.captcha-input-group {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-sm);
}

/* ===== BUTTONS ===== */
.btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled,
.btn-primary[disabled] {
    background: var(--gray);
    cursor: not-allowed;
    transform: none;
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

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

.btn-outline-secondary {
    border: 2px solid var(--gray-light);
    color: var(--gray);
    background: white;
    padding: 0.625rem 1.25rem;
}

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

.btn-lg {
    padding: 1.125rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* ===== PROGRESS BAR ===== */
.progress-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--gray-lighter);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
}

.progress {
    height: 8px;
    background: var(--gray-light);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    height: 100%;
    transition: width 0.3s ease;
}

.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 40px 0;
    }
}

/* ===== ALERTS ===== */
.alerts-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-lg) 0;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    border: none;
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideIn 0.3s ease;
}

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

.alert-success {
    background: rgba(49, 162, 76, 0.1);
    color: var(--success);
    border-color: var(--success);
}

.alert-danger {
    background: rgba(242, 54, 69, 0.1);
    color: var(--danger);
    border-color: var(--danger);
}

.alert-warning {
    background: rgba(255, 165, 0, 0.1);
    color: var(--warning);
    border-color: var(--warning);
}

.alert-info {
    background: rgba(0, 136, 204, 0.1);
    color: var(--info);
    border-color: var(--info);
}

.btn-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-size: 1.5rem;
    opacity: 0.7;
    transition: var(--transition);
    margin-left: auto;
}

.btn-close:hover {
    opacity: 1;
}

/* ===== RESULTS ===== */
.results-section {
    border-top: 2px solid var(--gray-light);
    padding-top: var(--spacing-lg);
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.results-item {
    background: var(--gray-lighter);
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.results-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.results-item-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--success);
}

.results-item-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: white;
    border-radius: 8px;
    border: 1px solid var(--gray-light);
    overflow: hidden;
}

.results-item-link code {
    flex: 1;
    font-size: 0.85rem;
    color: var(--primary);
    word-break: break-all;
    font-family: "Monaco", "Courier New", monospace;
}

.copy-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.copy-btn:hover {
    background: var(--primary-dark);
}

.copy-btn:active {
    transform: scale(0.95);
}

/* ===== FOOTER ===== */
.page-footer {
    border-top: 1px solid var(--gray-light);
    padding: var(--spacing-lg);
    color: var(--gray);
    font-size: var(--font-size-sm);
}

.footer-content p {
    margin-bottom: var(--spacing-md);
}

.footer-content p:last-child {
    margin-bottom: 0;
}

/* ===== INFO CARDS (SIDEBAR) ===== */
.info-card {
    background: var(--gray-lighter);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--gray-light);
    margin-bottom: var(--spacing-md);
}

.info-card h6 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.info-card ul li {
    padding: var(--spacing-xs) 0;
    color: var(--gray);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1199px) {
    .sidebar-left,
    .sidebar-right {
        display: none !important;
    }

    .main-wrapper {
        grid-template-columns: 1fr;
    }

    .content-center {
        max-width: 100%;
        margin: 0;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 20px;
    }

    .main-wrapper {
        padding: var(--spacing-sm);
        gap: var(--spacing-md);
    }

    .page-header {
        padding: var(--spacing-lg);
    }

    .logo {
        font-size: 1.75rem;
    }

    .logo i {
        font-size: 1.5rem;
    }

    .upload-section,
    .results-section {
        padding: var(--spacing-md);
    }

    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }

    .form-control,
    .form-control-lg {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .btn {
        padding: 0.75rem 1.25rem;
    }

    .btn-lg {
        padding: 1rem 1.5rem;
    }

    .resize-inputs {
        grid-template-columns: 1fr auto 1fr;
    }

    .results-item-link {
        flex-direction: column;
        align-items: stretch;
    }

    .copy-btn {
        width: 100%;
    }

    .ad-vertical {
        display: none !important;
    }

    .ads-bottom {
        padding: 0 var(--spacing-sm) var(--spacing-sm);
    }

    .ad-bottom-1,
    .ad-bottom-2 {
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 12px;
        --spacing-lg: 12px;
        --border-radius: 10px;
        --font-size-base: 14px;
    }

    .page-header {
        padding: var(--spacing-md);
    }

    .logo {
        font-size: 1.5rem;
    }

    .logo i {
        font-size: 1.25rem;
    }

    .tagline {
        font-size: 0.95rem;
    }

    .upload-section,
    .results-section {
        padding: var(--spacing-md);
    }

    .section-title {
        font-size: 1rem;
    }

    .drop-zone {
        padding: var(--spacing-lg);
    }

    .drop-zone-content i {
        font-size: 2rem;
    }

    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    }

    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.95rem;
    }

    .btn-lg {
        padding: 0.875rem 1.25rem;
        font-size: 1rem;
    }

    .resize-inputs {
        grid-template-columns: 1fr 0.5fr 1fr;
    }

    .form-control,
    .form-control-lg {
        padding: 0.625rem 0.875rem;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .ad-banner,
    .ads-bottom,
    .btn,
    .page-header {
        display: none !important;
    }
}

/* ===== ТЁМНАЯ ТЕМА ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --dark: #e8e8e8;
        --lighter: #1c1c1c;
        --gray-lighter: #2a2a2a;
        --gray-light: #404040;
    }

    body {
        background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
        color: var(--dark);
    }

    .content-center {
        background: var(--lighter);
        color: var(--dark);
    }

    .form-control {
        background: var(--gray-lighter);
        color: var(--dark);
        border-color: var(--gray-light);
    }

    .results-item-link {
        background: var(--gray-lighter);
    }

    /* Bootstrap красит .text-muted в тёмно-серый — на тёмном фоне он плохо читается */
    .text-muted {
        color: #ffffff !important;
        opacity: 0.75;
    }
}

/* ===== LANGUAGE SWITCH ===== */
.page-header {
    position: relative;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.brand-mark {
    color: #fff;
    font-size: 1.4rem;
    line-height: 1;
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition);
}

.brand-mark:hover {
    color: #fff;
    opacity: 1;
}

.lang-switch {
    display: flex;
    gap: var(--spacing-xs);
}

.lang-switch a {
    color: #fff;
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid transparent;
    transition: var(--transition);
}

.lang-switch a:hover {
    background: rgba(255, 255, 255, 0.32);
}

.lang-switch a.active {
    background: #fff;
    color: var(--primary-dark);
    pointer-events: none;
}

/* ===== ADDITIONAL SETTINGS (collapsible block) ===== */
.more-settings {
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--gray-lighter);
}

.more-settings > summary {
    cursor: pointer;
    padding: var(--spacing-md);
    font-weight: 600;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.more-settings > summary::-webkit-details-marker {
    display: none;
}

.more-settings > summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: auto;
    font-size: var(--font-size-sm);
    transition: transform 0.2s ease;
}

.more-settings[open] > summary::after {
    transform: rotate(180deg);
}

.more-settings > summary i {
    color: var(--primary);
}

.more-settings-hint {
    flex-basis: 100%;
    order: 3;
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--gray);
}

.more-settings-body {
    padding: 0 var(--spacing-md) var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-select.form-control-lg {
    width: 100%;
}

/* ===== SEO CONTENT ===== */
.seo-content {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-light);
    font-size: var(--font-size-sm);
    line-height: 1.65;
}

.seo-content h2 {
    font-size: 1.3rem;
}

.seo-content h3 {
    font-size: 1.05rem;
    margin-top: var(--spacing-lg);
}

.seo-content ul,
.seo-content ol {
    padding-left: 1.3rem;
    margin-bottom: var(--spacing-md);
}

.seo-content li {
    margin-bottom: var(--spacing-sm);
}

.faq details {
    border: 1px solid var(--gray-light);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.faq summary {
    cursor: pointer;
    font-weight: 600;
}

.faq details p {
    margin: var(--spacing-sm) 0 0;
}

/* ===== DONATE BLOCK ===== */
.donate-block {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-light);
    text-align: center;
}

.donate-title {
    font-size: 1.1rem;
}

.donate-title i {
    color: #f7931a;
}

.donate-block .results-item-link code {
    word-break: break-all;
}

.donate-open {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* ===== VIEW / DELETE PAGES ===== */
.gallery-preview-img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    cursor: zoom-in;
    box-shadow: var(--shadow-sm);
}

.btn-danger-solid {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

.btn-danger-solid:hover:not(:disabled) {
    background: #cf2230;
    color: #fff;
}

.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
    padding: 20px;
}

.lightbox img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 4px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}