/* Bytefriends Style */

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

:root {
    color-scheme: light dark;
    --color-primary: #ff6dff;
    --color-primary-hover: #ff00ff;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-border: #e5e7eb;
    --color-bg: #f9fafb;
    --color-white: #ffffff;
    --bubble-sent-bg: #d946ef;
    --bubble-sent-text: #ffffff;
    --bubble-recv-bg: #ffffff;
    --bubble-recv-text: #1f2937;
    --chat-header-bg: #ffffff;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-text: #d4d0c8;
        --color-bg: #1a1a1a;
        --color-border: #333;
        --bubble-recv-bg: #2a2a2a;
        --bubble-recv-text: #d4d0c8;
        --chat-header-bg: #222;
    }
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    font-size: clamp(13px, 1.8vw, 16px);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

/* ── Connect Screen ───────────────────────────────────────────────────────── */

.connect-screen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.connect-inner {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
    text-align: center;
}

.icon {
    color: var(--color-text-light);
    margin-bottom: 20px;
    margin-top: calc(30vh - 128px);
}

.icon svg {
    width: 128px;
    height: 128px;
}

.description {
    color: var(--color-text-light);
    font-size: 1em;
    margin-bottom: 25px;
}

.connect-unavailable {
    color: var(--color-text-light);
    font-size: 0.95em;
    line-height: 1.8;
    max-width: 360px;
    margin: 0 auto;
}

.connect-unavailable br {
    margin-bottom: 3ex;
}

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

.primary-button {
    background-color: var(--color-primary);
    border: none;
    border-radius: 3ex;
    padding: 14px 28px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.primary-button:hover {
    background-color: var(--color-primary-hover);
}

footer {
    padding: 20px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875em;
}

/* ── Chat Screen ──────────────────────────────────────────────────────────── */

.chat-screen {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
}

.chat-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: 52px;
    background-color: var(--chat-header-bg);
    border-bottom: 1px solid var(--color-border);
}

.header-channel {
    font-weight: 600;
    font-size: 1em;
    color: var(--color-text);
}

.disconnect-btn {
    background: none;
    border: none;
    font-size: 1.2em;
    cursor: pointer;
    color: var(--color-text-light);
    padding: 6px 8px;
    border-radius: 6px;
    line-height: 1;
}

.disconnect-btn:hover {
    color: #ef4444;
    background-color: rgba(239, 68, 68, 0.1);
}

/* ── Messages List ────────────────────────────────────────────────────────── */

.messages-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0 8px;
    display: flex;
    flex-direction: column;
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: var(--color-text-light);
    font-size: 0.95em;
}

/* Day header */
.day-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 16px 16px 8px;
    color: var(--color-text-light);
    font-size: 0.78em;
    font-weight: 600;
}

.day-header::before,
.day-header::after {
    content: "";
    flex: 1;
    height: 1px;
    background-color: var(--color-border);
}

/* Message row */
.msg-row {
    display: flex;
    align-items: flex-end;
    margin: 1px 12px;
    gap: 8px;
}

.msg-row.group-first {
    margin-top: 10px;
}

.msg-row.group-last {
    margin-bottom: 3px;
}

/* Received: avatar | bubble | spacer */
.msg-row-recv {
    flex-direction: row;
}

/* Sent: spacer | bubble (via justify-content) */
.msg-row-sent {
    justify-content: flex-end;
}

/* Avatar (emoji, no circle) */
.chat-avatar {
    font-size: 1.8em;
    line-height: 1;
    width: 36px;
    flex-shrink: 0;
    text-align: center;
    align-self: flex-end;
    user-select: none;
}

.chat-avatar-gap {
    width: 36px;
    flex-shrink: 0;
}

.msg-spacer {
    flex: 1;
    min-width: 48px;
    max-width: 60px;
}

/* Bubble */
.bubble {
    border-radius: 18px;
    padding: 8px 14px;
    max-width: min(72%, 380px);
    word-break: break-word;
    font-size: 0.97em;
}

.bubble-sent {
    background-color: var(--bubble-sent-bg);
    color: var(--bubble-sent-text);
    border-top-right-radius: 18px;
    border-bottom-right-radius: 18px;
}

.bubble-recv {
    background-color: var(--bubble-recv-bg);
    color: var(--bubble-recv-text);
}

/* Grouped corner flattening */
.bubble-tr-small { border-top-right-radius: 4px; }
.bubble-br-small { border-bottom-right-radius: 4px; }
.bubble-tl-small { border-top-left-radius: 4px; }
.bubble-bl-small { border-bottom-left-radius: 4px; }

.bubble-sender {
    font-weight: 700;
    font-size: 0.85em;
    margin-bottom: 2px;
}

.bubble-text {
    line-height: 1.45;
    white-space: pre-wrap;
}

.bubble-time {
    font-size: 0.75em;
    opacity: 0.7;
    margin-top: 3px;
    text-align: right;
}

.bubble-footer {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-top: 3px;
    gap: 8px;
}

.bubble-hops {
    font-size: 0.75em;
    opacity: 0.7;
}

.bubble-time-recv {
    font-size: 0.75em;
    opacity: 0.7;
    text-align: right;
}

/* ── Input Bar ────────────────────────────────────────────────────────────── */

.input-bar {
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 8px 12px;
    border-top: 1px solid var(--color-border);
    background-color: var(--chat-header-bg);
}

.message-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 1em;
    font-family: inherit;
    background-color: var(--color-bg);
    color: var(--color-text);
    resize: none;
    overflow-y: hidden;
    line-height: 1.45;
    max-height: 120px;
    overflow-y: auto;
}

.message-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

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

.send-btn {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    border-radius: 50%;
    border: none;
    background-color: var(--color-primary);
    color: white;
    font-size: 1.1em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    padding: 0;
    line-height: 1;
}

.send-btn:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
}

.send-btn:disabled {
    background-color: var(--color-text-light);
    cursor: not-allowed;
    opacity: 0.5;
}