:root {
    --telegram-bg: #0F1419;
    --telegram-bg-secondary: #17212B;
    --telegram-bg-chat: #212D3B;
    --telegram-bubble-out: #2B5278;
    --telegram-bubble-in: #182533;
    --telegram-bubble-info: #1E3A5F;
    --telegram-text-primary: #FFFFFF;
    --telegram-text-secondary: #8A8A8A;
    --telegram-text-muted: #5A6A75;
    --telegram-accent: #64B5EF;
    --telegram-accent-hover: #7EC4F0;
    --telegram-success: #4FAE4E;
    --telegram-warning: #FFB347;
    --telegram-online: #4DCD5E;
    --telegram-border: rgba(255, 255, 255, 0.08);
    --telegram-border-hover: rgba(255, 255, 255, 0.15);
    --telegram-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --telegram-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
    --animation-speed: 0.2s;
    --border-radius: 12px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --header-total-height: 160px;
    /* Ana header + telegram header */
}

* {
    box-sizing: border-box;
}

body {
    background: var(--telegram-bg);
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.telegram-container {
    min-height: 100vh;
    background: var(--telegram-bg);
    color: #fff;
    margin-top: 0;
    padding-top: 0;
    position: relative;
}

/* Header Improvements */
.channel-header {
    position: fixed;
    top: 80px;
    /* Ana header normal yüksekliği */
    left: 0;
    right: 0;
    background: var(--telegram-bg-secondary);
    background: linear-gradient(135deg, var(--telegram-bg-secondary) 0%, rgba(23, 33, 43, 0.95) 100%);
    border-bottom: 1px solid var(--telegram-border);
    border-top: none;
    /* Ana header ile boşluk olmaması için */
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 995;
    /* Ana header'dan düşük z-index */
    transition: top 0.2s ease, transform 0.2s ease;
    transform: translateY(0);
    will-change: transform;
    margin: 0;
    box-sizing: border-box;
}

.channel-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.channel-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--telegram-accent) 0%, var(--telegram-accent-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 2px 8px rgba(100, 181, 239, 0.3);
    flex-shrink: 0;
}

.channel-details {
    min-width: 0;
    flex: 1;
}

.channel-details h1 {
    color: var(--telegram-text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 0.125rem 0;
    letter-spacing: -0.01em;
}

.channel-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--telegram-text-secondary);
    font-size: 0.813rem;
    flex-wrap: wrap;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--telegram-online);
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.last-update {
    opacity: 0.8;
}

.channel-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.action-btn,
.notification-btn {
    background: none;
    border: none;
    color: var(--telegram-text-secondary);
    padding: var(--spacing-sm);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--animation-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.action-btn:hover,
.notification-btn:hover {
    background: var(--telegram-bg-chat);
    color: var(--telegram-text-primary);
    transform: scale(1.1);
}

.action-btn:focus,
.notification-btn:focus {
    outline: 2px solid var(--telegram-accent);
    outline-offset: 2px;
}

/* Loading Skeleton */
.loading-skeleton {
    padding: var(--spacing-lg);
}

.skeleton-message {
    background: var(--telegram-bubble-in);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    animation: skeleton-loading 1.5s ease-in-out infinite alternate;
}

@keyframes skeleton-loading {
    0% {
        opacity: 0.3;
    }

    100% {
        opacity: 0.7;
    }
}

.skeleton-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.skeleton-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--telegram-bg-chat);
}

.skeleton-name {
    width: 120px;
    height: 16px;
    background: var(--telegram-bg-chat);
    border-radius: 4px;
}

.skeleton-time {
    width: 40px;
    height: 14px;
    background: var(--telegram-bg-chat);
    border-radius: 4px;
    margin-left: auto;
}

.skeleton-title {
    width: 80%;
    height: 20px;
    background: var(--telegram-bg-chat);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
}

.skeleton-text {
    width: 100%;
    height: 16px;
    background: var(--telegram-bg-chat);
    border-radius: 4px;
    margin-bottom: var(--spacing-xs);
}

.skeleton-text.short {
    width: 60%;
}

/* Messages Container */
.messages-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    padding-top: 170px;
    /* Ana header (80px) + Duyuru header (70px) + minimal spacing */
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.message-wrapper {
    display: flex;
    justify-content: center;
    animation: slideIn 0.4s ease-out;
    scroll-margin-top: var(--header-total-height, 180px);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message-bubble {
    background: var(--telegram-bubble-in);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    width: 600px;
    max-width: 95%;
    position: relative;
    border: 1px solid var(--telegram-border);
    transition: all var(--animation-speed) ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-left: 0;
}

.message-bubble:hover {
    transform: translateY(-2px);
    box-shadow: var(--telegram-shadow-hover);
    border-color: var(--telegram-border-hover);
}

.message-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-sm);
}

.sender-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 0;
    flex: 1;
}

.sender-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--telegram-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.sender-name {
    color: var(--telegram-accent);
    font-weight: 600;
    font-size: 0.875rem;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.verified-badge {
    color: var(--telegram-success);
    flex-shrink: 0;
    animation: verified-pulse 3s ease-in-out infinite;
}

@keyframes verified-pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.message-time {
    color: var(--telegram-text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    flex-shrink: 0;
}

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

.message-title {
    color: var(--telegram-text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.message-text {
    color: var(--telegram-text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
    word-wrap: break-word;
    hyphens: auto;
}

/* Liste ve metin formatı stilleri */
.message-text ul,
.message-text ol {
    margin: var(--spacing-sm) 0 var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    color: var(--telegram-text-secondary);
}

.message-text ul {
    list-style-type: none;
    position: relative;
}

.message-text ul li {
    position: relative;
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-md);
}

.message-text ul li::before {
    content: "•";
    color: var(--telegram-accent);
    font-weight: bold;
    position: absolute;
    left: 0;
    top: 0;
}

.message-text ol {
    list-style-type: decimal;
    list-style-position: outside;
}

.message-text ol li {
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-xs);
}

.message-text ol li::marker {
    color: var(--telegram-accent);
    font-weight: 600;
}

.message-text li {
    line-height: 1.6;
}

.message-text h1,
.message-text h2,
.message-text h3,
.message-text h4,
.message-text h5,
.message-text h6 {
    color: var(--telegram-text-primary);
    font-weight: 600;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.message-text h1 {
    font-size: 1.5rem;
}

.message-text h2 {
    font-size: 1.25rem;
}

.message-text h3 {
    font-size: 1.125rem;
}

.message-text h4 {
    font-size: 1rem;
}

.message-text h5 {
    font-size: 0.938rem;
}

.message-text h6 {
    font-size: 0.875rem;
}

.message-text p {
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.6;
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-text a {
    color: var(--telegram-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all var(--animation-speed) ease;
}

.message-text a:hover {
    color: var(--telegram-accent-hover);
    border-bottom-color: var(--telegram-accent-hover);
}

.message-text blockquote {
    border-left: 3px solid var(--telegram-accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    background: rgba(100, 181, 239, 0.05);
    border-radius: 0 var(--spacing-xs) var(--spacing-xs) 0;
    font-style: italic;
    color: var(--telegram-text-secondary);
}

.message-text code {
    background: var(--telegram-bg-chat);
    color: var(--telegram-accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.813rem;
    border: 1px solid var(--telegram-border);
}

.message-text pre {
    background: var(--telegram-bg-chat);
    border: 1px solid var(--telegram-border);
    border-radius: var(--spacing-sm);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    overflow-x: auto;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.813rem;
    line-height: 1.4;
}

.message-text pre code {
    background: none;
    border: none;
    padding: 0;
    color: var(--telegram-text-primary);
}

.message-text strong,
.message-text b {
    color: var(--telegram-text-primary);
    font-weight: 600;
}

.message-text em,
.message-text i {
    font-style: italic;
    color: var(--telegram-text-primary);
}

.message-text hr {
    border: none;
    height: 1px;
    background: var(--telegram-border);
    margin: var(--spacing-lg) 0;
}

.message-text table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    font-size: 0.813rem;
}

.message-text th,
.message-text td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--telegram-border);
}

.message-text th {
    background: var(--telegram-bg-chat);
    color: var(--telegram-text-primary);
    font-weight: 600;
}

.message-text td {
    color: var(--telegram-text-secondary);
}

.message-text img {
    max-width: 100%;
    height: auto;
    border-radius: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Özel badge stilleri */
.message-text .badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    margin: 0 2px;
}

.message-text .badge-info {
    background: rgba(100, 181, 239, 0.2);
    color: var(--telegram-accent);
    border: 1px solid rgba(100, 181, 239, 0.3);
}

.message-text .badge-success {
    background: rgba(79, 174, 78, 0.2);
    color: var(--telegram-success);
    border: 1px solid rgba(79, 174, 78, 0.3);
}

.message-text .badge-warning {
    background: rgba(255, 179, 71, 0.2);
    color: var(--telegram-warning);
    border: 1px solid rgba(255, 179, 71, 0.3);
}

.expand-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--telegram-accent);
    text-decoration: none;
    font-size: 0.813rem;
    font-weight: 500;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    transition: all var(--animation-speed) ease;
    border-radius: 4px;
}

.expand-btn:hover {
    color: var(--telegram-accent-hover);
    gap: var(--spacing-sm);
    transform: translateX(2px);
}

.expand-btn:focus {
    outline: 2px solid var(--telegram-accent);
    outline-offset: 2px;
}

.message-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--telegram-border);
    gap: var(--spacing-sm);
}

.message-date {
    color: var(--telegram-text-muted);
    font-size: 0.75rem;
    font-weight: 500;
}

.message-reactions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.reaction-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--telegram-text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 4px;
    transition: all var(--animation-speed) ease;
}

.reaction-item:hover {
    color: var(--telegram-accent);
    background: rgba(100, 181, 239, 0.1);
    transform: scale(1.05);
}

.reaction-item.liked svg {
    fill: var(--telegram-accent);
}

/* Empty State */
.empty-channel {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: var(--spacing-xl);
}

.empty-content {
    text-align: center;
    color: var(--telegram-text-secondary);
    max-width: 400px;
}

.empty-icon {
    margin-bottom: var(--spacing-lg);
    opacity: 0.6;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

.empty-content h2 {
    color: var(--telegram-text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.empty-content p {
    font-size: 0.938rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.subscribe-btn {
    background: var(--telegram-accent);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--animation-speed) ease;
    box-shadow: 0 2px 8px rgba(100, 181, 239, 0.3);
}

.subscribe-btn:hover {
    background: var(--telegram-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(100, 181, 239, 0.4);
}

.subscribe-btn:focus {
    outline: 2px solid var(--telegram-accent);
    outline-offset: 3px;
}

/* Scroll to Top */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--telegram-accent);
    color: white;
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--telegram-shadow);
    transition: all var(--animation-speed) ease;
    z-index: 50;
}

.scroll-to-top:hover {
    background: var(--telegram-accent-hover);
    transform: translateY(-2px) scale(1.1);
    box-shadow: var(--telegram-shadow-hover);
}

.scroll-to-top:focus {
    outline: 2px solid var(--telegram-accent);
    outline-offset: 3px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .channel-header {
        padding: 12px 16px;
        top: 64px;
        /* Mobilde ana header yüksekliği - boşluksuz */
        z-index: 994;
        /* Mobilde daha düşük z-index */
        transition: top 0.2s ease, transform 0.2s ease, padding 0.2s ease;
    }

    .messages-container {
        padding: 144px var(--spacing-md) var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .channel-avatar {
        width: 40px;
        height: 40px;
        transition: width 0.2s ease, height 0.2s ease;
    }

    .channel-details h1 {
        font-size: 1rem;
    }

    .channel-status {
        font-size: 0.75rem;
    }

    .message-bubble {
        width: 100%;
        max-width: 95%;
        padding: var(--spacing-md);
    }

    .message-reactions {
        gap: var(--spacing-md);
    }

    .reaction-item {
        font-size: 0.688rem;
    }

    .scroll-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .channel-header {
        padding: 10px 12px;
        top: 64px;
        z-index: 993;
    }

    .messages-container {
        padding-top: 138px;
        /* Ana header (64px) + Duyuru header (~60px) + minimal spacing */
    }
}

@media (max-width: 375px) {
    .channel-header {
        padding: 8px 10px;
        top: 64px;
        /* Çok küçük ekranlarda ana header yüksekliği - boşluksuz */
        z-index: 992;
        /* En düşük z-index */
    }

    .messages-container {
        padding-top: 132px;
        /* Ana header (64px) + Duyuru header (~54px) + minimal spacing */
    }

    .channel-info {
        gap: var(--spacing-sm);
    }

    .channel-avatar {
        width: 36px;
        height: 36px;
    }

    .message-bubble {
        width: 100%;
        max-width: 95%;
    }

    .message-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .message-time {
        align-self: flex-end;
        margin-top: -1.5rem;
    }

    .sender-info {
        width: 100%;
    }

    .message-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .message-reactions {
        align-self: flex-end;
    }
}

/* Dark mode improvements */
@media (prefers-color-scheme: dark) {
    :root {
        --telegram-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        --telegram-shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.6);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .scroll-to-top:hover {
        transform: none;
    }

    .message-bubble:hover {
        transform: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --telegram-border: rgba(255, 255, 255, 0.3);
        --telegram-text-secondary: #B0B0B0;
        --telegram-text-muted: #A0A0A0;
    }
}

/* Print styles */
@media print {

    .channel-header,
    .scroll-to-top,
    .action-btn,
    .notification-btn {
        display: none;
    }

    .message-bubble {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .telegram-container {
        background: white;
        color: black;
    }
}