/* ============================================
   WebMessenger — MSN Messenger Classic Theme
   Inspired by Windows Live Messenger / MSN
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Tahoma&display=swap');

:root {
    /* MSN classic colors */
    --msn-blue-dark: #1a3f7a;
    --msn-blue: #2b5daa;
    --msn-blue-light: #4b8bce;
    --msn-blue-lighter: #7eb4ea;
    --msn-blue-pale: #d6e9f8;
    --msn-green: #73b84d;
    --msn-green-dark: #5a9a3a;
    --msn-orange: #f08c28;
    --msn-red: #d14836;
    --msn-gray: #ece9d8;
    --msn-gray-dark: #aca899;
    --msn-gray-darker: #716f64;
    --msn-white: #ffffff;
    --msn-toolbar: #f0eedf;
    --msn-surface: #f5f4eb;
    --msn-border: #aca899;
    --msn-text: #000000;
    --msn-text-secondary: #555555;
    --msn-chat-bg: #ffffff;
    --msn-sent: #e8f0fe;
    --msn-received: #f0f0f0;
    --msn-online: #73b84d;
    --msn-offline: #999999;
    --msn-busy: #d14836;
    --msn-away: #f08c28;
    --msn-gradient-top: #4b8bce;
    --msn-gradient-bottom: #2b5daa;
    --radius: 0px;
    --radius-sm: 2px;
}

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

body {
    font-family: 'Tahoma', 'Segoe UI', Geneva, Verdana, sans-serif;
    background: linear-gradient(180deg, #4b8bce 0%, #2b5daa 30%, #1a3f7a 100%);
    color: var(--msn-text);
    height: 100vh;
    overflow: hidden;
    font-size: 12px;
}

a { color: var(--msn-blue); }

/* ============================================
   Auth Pages — MSN Sign-in Window
   ============================================ */

.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(180deg, #4b8bce 0%, #2b5daa 50%, #1a3f7a 100%);
}

.auth-card {
    background: var(--msn-gray);
    border: 2px solid var(--msn-blue-dark);
    border-radius: 8px;
    padding: 0;
    width: 100%;
    max-width: 380px;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.5);
    overflow: hidden;
}

.auth-header {
    background: linear-gradient(180deg, var(--msn-gradient-top), var(--msn-gradient-bottom));
    padding: 20px 24px;
    text-align: center;
    border-bottom: 1px solid var(--msn-blue-dark);
}

.auth-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.auth-header p {
    color: rgba(255,255,255,0.85);
    font-size: 11px;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.form-group label {
    font-size: 11px;
    font-weight: 700;
    color: var(--msn-text);
}

.form-group input {
    padding: 6px 8px;
    border: 1px solid var(--msn-border);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--msn-text);
    font-size: 12px;
    font-family: inherit;
    outline: none;
}

.form-group input:focus {
    border-color: var(--msn-blue);
    box-shadow: 0 0 3px rgba(75,139,206,0.5);
}

.form-group small {
    font-size: 10px;
    color: var(--msn-text-secondary);
}

.error-message {
    color: var(--msn-red);
    font-size: 11px;
    padding: 6px 8px;
    background: #fce4e4;
    border: 1px solid #e0b0b0;
    border-radius: var(--radius-sm);
}

.status-message {
    color: var(--msn-blue);
    font-size: 11px;
    padding: 6px 8px;
    background: var(--msn-blue-pale);
    border: 1px solid var(--msn-blue-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

/* MSN-style buttons */
.btn {
    padding: 6px 16px;
    border: 1px solid var(--msn-border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    background: linear-gradient(180deg, #ffffff 0%, #ece9d8 100%);
    color: var(--msn-text);
    box-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.btn:hover {
    background: linear-gradient(180deg, #f0eedf 0%, #ddd9c6 100%);
}

.btn:active {
    background: linear-gradient(180deg, #ddd9c6 0%, #f0eedf 100%);
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.2);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(180deg, #7eb4ea 0%, #4b8bce 50%, #2b5daa 100%);
    color: white;
    border-color: var(--msn-blue-dark);
    text-shadow: 0 1px 1px rgba(0,0,0,0.2);
}

.btn-primary:hover {
    background: linear-gradient(180deg, #8ec0f0 0%, #5a9add 50%, #3366bb 100%);
}

.btn-primary:active {
    background: linear-gradient(180deg, #2b5daa 0%, #4b8bce 100%);
}

.auth-footer {
    text-align: center;
    padding: 12px 24px 16px;
    font-size: 11px;
    color: var(--msn-text-secondary);
    border-top: 1px solid var(--msn-border);
    background: var(--msn-toolbar);
}

.auth-footer a {
    color: var(--msn-blue);
    text-decoration: underline;
    font-weight: 700;
}

/* ============================================
   Messenger Layout — MSN Window
   ============================================ */

.messenger {
    display: flex;
    height: 100vh;
    max-width: 1100px;
    margin: 0 auto;
    background: var(--msn-gray);
    border: 2px solid var(--msn-blue-dark);
    box-shadow: 3px 3px 15px rgba(0,0,0,0.5);
}

/* ============================================
   Sidebar — MSN Contact List
   ============================================ */

.sidebar {
    width: 280px;
    min-width: 240px;
    border-right: 1px solid var(--msn-border);
    display: flex;
    flex-direction: column;
    background: var(--msn-surface);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    background: linear-gradient(180deg, var(--msn-gradient-top), var(--msn-gradient-bottom));
    border-bottom: 1px solid var(--msn-blue-dark);
    min-height: 48px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    border: 2px solid rgba(255,255,255,0.5);
}

.user-name {
    font-weight: 700;
    font-size: 12px;
    color: white;
    text-shadow: 0 1px 1px rgba(0,0,0,0.3);
}

.sidebar-actions {
    display: flex;
    gap: 2px;
}

.btn-icon {
    background: none;
    border: 1px solid transparent;
    font-size: 14px;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    transition: all 0.1s;
    color: white;
    line-height: 1;
}

.btn-icon:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.3);
}

/* New chat search panel */
.new-chat-panel {
    padding: 8px;
    border-bottom: 1px solid var(--msn-border);
    background: var(--msn-toolbar);
}

.search-input {
    width: 100%;
    padding: 5px 8px;
    border: 1px solid var(--msn-border);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--msn-text);
    font-size: 11px;
    font-family: inherit;
    outline: none;
}

.search-input:focus {
    border-color: var(--msn-blue);
}

.search-results {
    margin-top: 4px;
    max-height: 200px;
    overflow-y: auto;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 6px;
    cursor: pointer;
    border: 1px solid transparent;
}

.search-result-item:hover {
    background: var(--msn-blue-pale);
    border-color: var(--msn-blue-light);
}

.result-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--msn-blue-light);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 11px;
    flex-shrink: 0;
}

.result-avatar.online {
    background: var(--msn-green);
}

.result-name {
    font-weight: 700;
    font-size: 11px;
    flex: 1;
}

.result-status {
    font-size: 10px;
    color: var(--msn-offline);
}

.result-status.online {
    color: var(--msn-online);
    font-weight: 700;
}

/* Status indicators */
.status-online {
    color: var(--msn-online) !important;
    font-weight: 700;
}

.status-typing {
    color: var(--msn-blue) !important;
    font-style: italic;
}

.conv-status-text {
    font-size: 10px;
    color: var(--msn-offline);
}

.conv-status-text.online {
    color: var(--msn-online);
    font-weight: 700;
}

.conv-encrypted {
    font-size: 10px;
    color: var(--msn-text-secondary);
}

/* Conversation list — MSN Buddy List */
.conversation-list {
    flex: 1;
    overflow-y: auto;
    background: white;
    border: 1px solid var(--msn-border);
    margin: 4px;
}

.empty-state {
    text-align: center;
    color: var(--msn-text-secondary);
    padding: 30px 16px;
    font-size: 11px;
    font-style: italic;
}

.conversation-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    cursor: pointer;
    border-bottom: 1px solid #f0eedf;
    transition: background 0.1s;
}

.conversation-item:hover {
    background: var(--msn-blue-pale);
}

.conversation-item.active {
    background: var(--msn-blue-pale);
    border-left: 3px solid var(--msn-blue);
}

.conv-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--msn-blue-light);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
    position: relative;
    border: 2px solid #ccc;
}

.conv-avatar.online {
    border-color: var(--msn-green);
}

.conv-avatar.online::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 10px;
    height: 10px;
    background: var(--msn-green);
    border-radius: 50%;
    border: 2px solid white;
}

.conv-info {
    flex: 1;
    min-width: 0;
}

.conv-name {
    font-weight: 700;
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--msn-text);
}

.conv-preview {
    font-size: 10px;
    color: var(--msn-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 1px;
}

.conv-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.conv-time {
    font-size: 10px;
    color: var(--msn-text-secondary);
}

/* ============================================
   Chat Area — MSN Chat Window
   ============================================ */

.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--msn-surface);
    position: relative;
}

.no-chat-selected {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--msn-text-secondary);
    gap: 8px;
    background: linear-gradient(180deg, #e8f0fe 0%, #d6e9f8 50%, #b8d4f0 100%);
}

.no-chat-icon {
    font-size: 48px;
    opacity: 0.6;
}

.no-chat-selected h2 {
    font-size: 16px;
    color: var(--msn-blue-dark);
    font-weight: 700;
}

.no-chat-selected p {
    font-size: 11px;
    color: var(--msn-text-secondary);
}

/* Chat header — MSN toolbar */
.chat-header {
    display: flex;
    align-items: center;
    padding: 6px 10px;
    background: linear-gradient(180deg, var(--msn-gradient-top), var(--msn-gradient-bottom));
    border-bottom: 1px solid var(--msn-blue-dark);
    min-height: 44px;
    gap: 8px;
}

.back-btn {
    display: none;
    font-size: 16px;
    color: white;
}

.chat-header-info {
    flex: 1;
}

.chat-name {
    font-weight: 700;
    font-size: 13px;
    display: block;
    color: white;
    text-shadow: 0 1px 1px rgba(0,0,0,0.3);
}

.chat-status {
    font-size: 10px;
    color: rgba(255,255,255,0.8);
}

.chat-status.status-online {
    color: #90ee90;
}

.chat-status.status-typing {
    color: #ffeb3b;
    font-style: italic;
}

.chat-header-actions {
    display: flex;
    gap: 4px;
    align-items: center;
}

.encryption-badge {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
}

/* Messages container — MSN chat history */
.messages-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    padding: 8px 10px;
    background: white;
    border: 1px solid var(--msn-border);
    margin: 4px 4px 2px 4px;
}

.messages {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: auto;
}

/* Message bubbles — MSN style */
.message {
    display: flex;
    flex-direction: column;
    max-width: 75%;
    animation: fadeIn 0.15s ease;
}

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

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

.message-received {
    align-self: flex-start;
}

.message-sender {
    font-size: 10px;
    font-weight: 700;
    color: var(--msn-blue);
    margin-bottom: 1px;
    padding-left: 8px;
}

.message-bubble {
    padding: 6px 10px;
    border-radius: 4px;
    position: relative;
    word-wrap: break-word;
    line-height: 1.4;
    border: 1px solid;
}

.message-sent .message-bubble {
    background: #e0eef9;
    border-color: #b0cde8;
    border-radius: 8px 2px 8px 8px;
}

.message-received .message-bubble {
    background: #f0f0f0;
    border-color: #d0d0d0;
    border-radius: 2px 8px 8px 8px;
}

.message-text {
    font-size: 12px;
    white-space: pre-wrap;
    color: var(--msn-text);
}

.message-time {
    font-size: 9px;
    color: var(--msn-text-secondary);
    text-align: right;
    margin-top: 2px;
}

/* File message */
.file-message {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px;
    background: rgba(0,0,0,0.03);
    border-radius: 3px;
    margin-bottom: 3px;
    border: 1px solid #ddd;
}

.file-icon {
    font-size: 22px;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 11px;
    font-weight: 700;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 10px;
    color: var(--msn-text-secondary);
}

.download-btn {
    font-size: 14px;
    color: var(--msn-blue);
}

/* ============================================
   Nudge Shake Animation
   ============================================ */

@keyframes nudgeShake {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-8px, -5px); }
    20% { transform: translate(8px, 5px); }
    30% { transform: translate(-6px, 3px); }
    40% { transform: translate(6px, -3px); }
    50% { transform: translate(-4px, 5px); }
    60% { transform: translate(4px, -5px); }
    70% { transform: translate(-3px, 2px); }
    80% { transform: translate(3px, -2px); }
    90% { transform: translate(-1px, 1px); }
}

.nudge-shake {
    animation: nudgeShake 0.6s ease-in-out;
}

/* Nudge message (system message style) */
.message-nudge {
    align-self: center !important;
    max-width: 100% !important;
}

.nudge-message {
    text-align: center;
    font-size: 11px;
    color: var(--msn-text-secondary);
    font-style: italic;
    padding: 4px 12px;
    background: #fff8e1;
    border: 1px dashed var(--msn-orange);
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nudge-icon {
    font-size: 16px;
    font-style: normal;
}

/* ============================================
   TTL Panel
   ============================================ */

.ttl-panel {
    background: var(--msn-toolbar);
    border-bottom: 1px solid var(--msn-border);
    padding: 8px 12px;
    margin: 0 4px;
}

.ttl-panel-content {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ttl-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
}

.ttl-label input[type="checkbox"] {
    accent-color: var(--msn-blue);
}

.ttl-panel select {
    padding: 3px 6px;
    font-size: 11px;
    font-family: inherit;
    border: 1px solid var(--msn-border);
    border-radius: 2px;
    background: white;
}

.ttl-panel select:disabled {
    opacity: 0.5;
}

.btn-sm {
    padding: 3px 10px;
    font-size: 10px;
}

.ttl-indicator {
    font-size: 12px;
    color: var(--msn-orange);
}

.ttl-badge {
    font-size: 10px;
    color: var(--msn-orange);
}

/* ============================================
   Input Area — MSN Message Box
   ============================================ */

.input-area {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    padding: 4px;
    background: var(--msn-toolbar);
    border-top: 1px solid var(--msn-border);
    position: relative;
    margin: 0 4px 4px 4px;
    border: 1px solid var(--msn-border);
}

.input-area .btn-icon {
    color: var(--msn-text-secondary);
    font-size: 16px;
    padding: 4px;
}

.input-area .btn-icon:hover {
    background: var(--msn-blue-pale);
    border-color: var(--msn-blue-light);
}

.input-wrapper {
    flex: 1;
}

.input-wrapper textarea {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--msn-border);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--msn-text);
    font-size: 12px;
    font-family: inherit;
    resize: none;
    outline: none;
    max-height: 80px;
    line-height: 1.4;
}

.input-wrapper textarea:focus {
    border-color: var(--msn-blue);
}

.input-wrapper textarea::placeholder {
    color: var(--msn-text-secondary);
    font-style: italic;
}

.send-btn {
    color: var(--msn-blue);
    font-size: 18px;
}

/* ============================================
   Emoji Picker — MSN Emoticons panel
   ============================================ */

.emoji-picker {
    position: absolute;
    bottom: 50px;
    left: 40px;
    width: 280px;
    max-height: 300px;
    background: var(--msn-gray);
    border: 2px solid var(--msn-blue);
    border-radius: 4px;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 100;
}

.emoji-tabs {
    display: flex;
    border-bottom: 1px solid var(--msn-border);
    padding: 2px;
    gap: 1px;
    overflow-x: auto;
    flex-shrink: 0;
    background: var(--msn-toolbar);
}

.emoji-tab {
    background: linear-gradient(180deg, #ffffff 0%, #ece9d8 100%);
    border: 1px solid var(--msn-border);
    font-size: 14px;
    padding: 3px 5px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.emoji-tab:hover {
    background: var(--msn-blue-pale);
    border-color: var(--msn-blue-light);
}

.emoji-tab.active {
    background: var(--msn-blue-pale);
    border-color: var(--msn-blue);
}

.emoji-content {
    flex: 1;
    overflow-y: auto;
    padding: 4px;
    background: white;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 1px;
}

.emoji-item {
    background: none;
    border: 1px solid transparent;
    font-size: 18px;
    padding: 3px;
    cursor: pointer;
    border-radius: 2px;
    text-align: center;
    line-height: 1.2;
}

.emoji-item:hover {
    background: var(--msn-blue-pale);
    border-color: var(--msn-blue-light);
}

/* ============================================
   Scrollbar — Classic Windows style
   ============================================ */

::-webkit-scrollbar {
    width: 16px;
}

::-webkit-scrollbar-track {
    background: var(--msn-toolbar);
    border-left: 1px solid var(--msn-border);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #ffffff 0%, #ece9d8 100%);
    border: 1px solid var(--msn-border);
    border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #ece9d8 0%, #ddd9c6 100%);
}

::-webkit-scrollbar-button:start:decrement,
::-webkit-scrollbar-button:end:increment {
    display: block;
    height: 16px;
    background: linear-gradient(180deg, #ffffff 0%, #ece9d8 100%);
    border: 1px solid var(--msn-border);
}

/* ============================================
   Mobile Responsive
   ============================================ */

@media (max-width: 768px) {
    .messenger {
        border: none;
        box-shadow: none;
    }

    .sidebar {
        width: 100%;
        min-width: unset;
    }

    .chat-area {
        display: none;
    }

    .messenger.chat-open .sidebar {
        display: none;
    }

    .messenger.chat-open .chat-area {
        display: flex;
    }

    .messenger.chat-open .back-btn {
        display: block;
    }

    .message {
        max-width: 85%;
    }

    .emoji-picker {
        left: 5px;
        right: 5px;
        width: auto;
    }
}

@media (max-width: 480px) {
    .auth-card {
        border-radius: 0;
        border: none;
    }

    .emoji-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}