/* chatroom.css — IA: clear thread context, scannable messages */

/* Uses design tokens from styles.css */

.chatroom-container {
    max-width: 900px;
    margin: var(--space-8) auto;
    background: var(--color-surface-overlay);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    min-height: 70vh;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.chatroom-header {
    background: var(--color-surface-elevated);
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    border-top-left-radius: var(--radius-xl);
    border-top-right-radius: var(--radius-xl);
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.chatroom-title {
    text-align: center;
}

.chatroom-title h1 {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin: 0;
    letter-spacing: -0.02em;
}

.chatroom-title a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    display: block;
    margin-top: var(--space-2);
    transition: color 0.2s ease;
    word-break: break-all;
    font-weight: var(--font-weight-medium);
}

.chatroom-title a:hover {
    color: var(--color-primary);
}

.chatroom-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-3);
    background: var(--color-surface);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.action-btn {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-4);
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
}

.action-btn:hover {
    background: var(--color-primary-muted);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Chat Messages Section */
.chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.15);
    scrollbar-width: thin;
    scrollbar-color: var(--gold) rgba(0, 0, 0, 0.2);
}

.chat-messages::-webkit-scrollbar {
    width: 10px;
}

.chat-messages::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-pill);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--gold), var(--gold-soft));
    border-radius: var(--radius-pill);
}

.chat-message {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    padding: 20px;
    background: var(--bubble-bg);
    backdrop-filter: blur(8px);
    border-radius: 20px;
    border: 1px solid var(--bubble-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    transition: all 0.35s var(--transition-bounce);
}

.chat-message:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-glow), 0 12px 32px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 217, 61, 0.2);
}

.message-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.message-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--gold);
    object-fit: cover;
    object-position: center;
    flex-shrink: 0;
    overflow: hidden;
    background: var(--bubble-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s var(--transition-bounce);
}

.chat-message:hover .message-avatar {
    transform: scale(1.08);
}

.message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.message-info {
    display: flex;
    flex-direction: column;
}

.chatroom-container .username {
    font-size: 1.05rem;
    color: var(--gold);
    font-weight: 800;
}

.chatroom-container .timestamp {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
    font-weight: 600;
}

.message-content {
    font-size: 0.95rem;
    color: #ffffff;
    line-height: 1.6;
    font-weight: 600;
}

.message-content img {
    max-width: 200px;
    max-height: 200px;
    border-radius: 16px;
    margin-top: 12px;
    display: block;
    border: 2px solid var(--bubble-border);
    transition: transform 0.3s var(--transition-bounce);
}

.message-content img:hover {
    transform: scale(1.02);
}

.message-actions {
    margin-top: 12px;
    display: flex;
    gap: 12px;
}

.reply-btn {
    background: var(--bubble-bg);
    border: 2px solid var(--bubble-border);
    color: var(--gold);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    transition: all 0.35s var(--transition-bounce);
}

.reply-btn:hover {
    background: rgba(255, 217, 61, 0.2);
    border-color: var(--gold);
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--shadow-glow);
}

/* View / Hide replies button */
.view-replies-btn {
    background: var(--bubble-bg);
    border: 2px solid var(--bubble-border);
    color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    transition: all 0.35s var(--transition-bounce);
}

.view-replies-btn:hover {
    background: rgba(129, 236, 236, 0.15);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-2px) scale(1.02);
}

/* Reply threads: hidden by default, shown when toggled */
.replies-container {
    display: none;
    margin-top: 16px;
    padding-left: 24px;
    border-left: 3px solid rgba(255, 217, 61, 0.4);
    flex-direction: column;
    gap: 16px;
}

.replies-container[aria-hidden="false"] {
    display: flex;
}

.replies-container[aria-hidden="true"] {
    display: none;
}

/* Nested replies: single indent level, full width, more spacing (no sandwich) */
.chat-message.reply {
    margin-left: 0;
    margin-top: 0;
    margin-bottom: 0;
    padding: 16px 20px;
    border-left: none;
    padding-left: 20px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--bubble-border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.chat-message.reply:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 217, 61, 0.2);
}

/* Replying To Indicator */
.replying-to {
    background: var(--bubble-bg);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    border: 1px solid var(--bubble-border);
}

.cancel-reply-btn {
    background: none;
    border: none;
    color: var(--gold);
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s var(--transition-bounce);
}

.cancel-reply-btn:hover {
    transform: scale(1.1);
}

/* Input Section - sticky bubbly input */
.chat-input-section {
    background: rgba(255, 217, 61, 0.06);
    padding: 20px 24px;
    border-top: 2px solid rgba(255, 217, 61, 0.25);
    position: sticky;
    bottom: 0;
    z-index: 10;
    border-bottom-left-radius: 28px;
    border-bottom-right-radius: 28px;
    backdrop-filter: blur(16px);
}

.chat-form {
    display: flex;
    align-items: center;
    gap: 16px;
}

.chatroom-container .input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--bubble-bg);
    border-radius: var(--radius-pill);
    padding: 10px 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    border: 2px solid var(--bubble-border);
    transition: all 0.35s var(--transition-bounce);
}

.chatroom-container .input-wrapper:focus-within {
    border-color: var(--gold);
    box-shadow: var(--shadow-glow);
    transform: scale(1.01);
}

#chatMessage {
    flex: 1;
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 600;
    resize: none;
    padding: 10px;
    outline: none;
    max-height: 100px;
    overflow-y: auto;
}

#chatMessage::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.send-btn {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-soft) 100%);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1a1a1a;
    cursor: pointer;
    transition: all 0.35s var(--transition-bounce);
    font-size: 0;
    box-shadow: 0 6px 24px rgba(255, 217, 61, 0.4);
}

.send-btn:hover {
    transform: scale(1.12) rotate(-5deg);
    box-shadow: var(--shadow-glow), 0 8px 32px rgba(255, 217, 61, 0.5);
}

.send-btn::before {
    content: '➤';
    font-size: 1.3rem;
    font-weight: bold;
}

/* Page-Specific Search Bar Styling */
.chatroom-search-container {
    padding: 16px 24px;
    z-index: 1002;
}

.chatroom-search-container .search-bar {
    margin: 0 auto;
    padding-right: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .chatroom-container {
        margin: 12px;
        min-height: 60vh;
        border-radius: 24px;
    }

    .chatroom-header {
        padding: 18px;
        gap: 12px;
        border-top-left-radius: 24px;
        border-top-right-radius: 24px;
    }

    .chatroom-title h1 {
        font-size: 1.35rem;
    }

    .chatroom-title a {
        font-size: 0.85rem;
    }

    .chatroom-actions {
        gap: 10px;
        padding: 12px;
    }

    .action-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }

    .chat-messages {
        padding: 18px;
    }

    .chat-message {
        padding: 16px;
        margin-bottom: 16px;
        border-radius: 18px;
    }

    .message-avatar {
        width: 38px;
        height: 38px;
    }

    .message-header {
        gap: 10px;
    }

    .reply {
        margin-left: 20px;
        padding-left: 14px;
    }

    .chat-input-section {
        padding: 16px 18px;
        border-bottom-left-radius: 24px;
        border-bottom-right-radius: 24px;
    }

    .chat-form {
        gap: 12px;
    }

    .send-btn {
        width: 44px;
        height: 44px;
    }

    .send-btn::before {
        font-size: 1.15rem;
    }

    .chatroom-search-container {
        padding: 12px 16px;
    }

    .chat-input-section {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }

    .chat-form input,
    .chat-form textarea {
        min-height: 44px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .chatroom-container {
        margin: 8px;
        margin-left: max(8px, env(safe-area-inset-left));
        margin-right: max(8px, env(safe-area-inset-right));
    }

    .chatroom-header {
        padding: 14px 16px;
    }

    .chatroom-title h1 {
        font-size: 1.2rem;
    }

    .chat-messages {
        padding: 14px;
    }

    .chat-input-section {
        padding: 14px 16px;
    }
}

/* ========== My Messages (DM) page ========== */
.dm-page {
    min-height: 70vh;
    padding: 24px 0;
}

.dm-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 0;
    min-height: 500px;
    background: var(--glass);
    backdrop-filter: blur(24px);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    border: 1px solid var(--bubble-border);
}

.dm-conversations {
    border-right: 2px solid var(--bubble-border);
    padding: 20px;
    background: rgba(0, 0, 0, 0.15);
}

.dm-conversations h2 {
    margin: 0 0 16px;
    font-size: 1.3rem;
    color: var(--gold);
    font-weight: 800;
}

.dm-conversation-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dm-conversation-item {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: var(--bubble-bg);
    border: 1px solid var(--bubble-border);
    cursor: pointer;
    transition: all 0.25s ease;
}

.dm-conversation-item:hover,
.dm-conversation-item.active {
    background: rgba(255, 217, 61, 0.12);
    border-color: rgba(255, 217, 61, 0.35);
}

.dm-conversation-item .dm-other-username {
    font-weight: 700;
    color: #fff;
    display: block;
    margin-bottom: 4px;
}

.dm-conversation-item .dm-last-preview {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dm-thread {
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.dm-thread-placeholder {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 600;
    font-size: 1.05rem;
}

.dm-thread-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.dm-thread-header {
    padding: 16px 24px;
    border-bottom: 2px solid var(--bubble-border);
    background: rgba(255, 217, 61, 0.06);
}

.dm-thread-header h3 {
    margin: 0;
    font-size: 1.2rem;
    color: var(--gold);
    font-weight: 800;
}

.dm-messages {
    flex: 1;
    min-height: 200px;
    /* ~6 messages visible, then scroll (message + gap ≈ 70px each) */
    max-height: 420px;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}

.dm-message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.dm-message.sent {
    align-self: flex-end;
    background: linear-gradient(135deg, rgba(255, 217, 61, 0.25) 0%, rgba(129, 236, 236, 0.15) 100%);
    border: 1px solid rgba(255, 217, 61, 0.4);
}

.dm-message.received {
    align-self: flex-start;
    background: var(--bubble-bg);
    border: 1px solid var(--bubble-border);
}

.dm-message .dm-message-meta {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 6px;
}

.dm-send-form {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 2px solid var(--bubble-border);
    background: rgba(0, 0, 0, 0.1);
}

.dm-send-form textarea {
    flex: 1;
    padding: 12px 18px;
    border: 2px solid var(--bubble-border);
    border-radius: var(--radius-md);
    background: var(--bubble-bg);
    color: #fff;
    font-size: 1rem;
    resize: none;
    min-height: 48px;
}

.dm-send-form textarea:focus {
    outline: none;
    border-color: var(--gold);
}

.dm-send-form .send-btn {
    align-self: flex-end;
}

@media (max-width: 768px) {
    .dm-page {
        padding: 16px 0;
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
        padding-bottom: max(24px, env(safe-area-inset-bottom));
    }

    .dm-container {
        grid-template-columns: 1fr;
        min-height: 70vh;
        margin-left: 0;
        margin-right: 0;
    }

    .dm-conversations {
        border-right: none;
        border-bottom: 2px solid var(--bubble-border);
        padding: 16px;
    }

    .dm-conversation-item {
        min-height: 44px;
        padding: 14px 16px;
        display: flex;
        align-items: center;
    }

    .dm-thread-header {
        padding: 14px 20px;
    }

    .dm-messages {
        padding: 16px 20px;
        max-height: min(420px, 55vh);
    }

    .dm-send-form {
        padding: 14px 20px;
        padding-bottom: max(14px, env(safe-area-inset-bottom));
    }

    .dm-send-form textarea {
        min-height: 48px;
        font-size: 16px;
    }

    .dm-send-form .send-btn {
        min-width: 48px;
        min-height: 48px;
    }
}

@media (max-width: 480px) {
    .dm-page {
        padding: 12px 0;
    }

    .dm-container {
        border-radius: 20px;
    }

    .dm-conversations h2 {
        font-size: 1.15rem;
    }

    .dm-thread-header h3 {
        font-size: 1.1rem;
    }

    .dm-messages {
        max-height: min(380px, 50vh);
        padding: 14px 16px;
    }

    .dm-message {
        max-width: 90%;
        padding: 14px 16px;
    }
}