/* ========================================================
   AZARCHAT - MINIMALIST, HIGH-CONTRAST & AUTHENTIC DESIGN
   ======================================================== */

:root {
    /* Dark Theme (Default) - Tuned for Sharp Legibility */
    --bg-page: #09090b;
    --bg-card: #141417;
    --bg-subtle: #1e1e24;
    --bg-input: #18181c;

    --border-subtle: #323238;
    --border-hover: #52525b;

    --text-main: #ffffff;
    --text-muted: #d4d4d8; /* Crisp, high-contrast light slate */
    --text-dim: #a1a1aa;   /* Clearly readable secondary gray */

    --color-primary: #ffffff;
    --color-primary-text: #09090b;
    --color-accent: #3b82f6;
    --color-danger: #ef4444;
    --color-success: #22c55e;
    --color-warning: #f59e0b;

    /* Message Bubbles */
    --bubble-you-bg: #27272a;
    --bubble-you-text: #ffffff;
    --bubble-stranger-bg: #18181c;
    --bubble-stranger-text: #ffffff;
    --bubble-stranger-border: #3f3f46;

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="light"] {
    --bg-page: #ffffff;
    --bg-card: #fafafa;
    --bg-subtle: #f4f4f5;
    --bg-input: #ffffff;

    --border-subtle: #e4e4e7;
    --border-hover: #d4d4d8;

    --text-main: #18181b;
    --text-muted: #4b5563;
    --text-dim: #6b7280;

    --color-primary: #18181b;
    --color-primary-text: #ffffff;
    --color-accent: #2563eb;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    --color-warning: #d97706;

    --bubble-you-bg: #18181b;
    --bubble-you-text: #ffffff;
    --bubble-stranger-bg: #f4f4f5;
    --bubble-stranger-text: #18181b;
    --bubble-stranger-border: #e4e4e7;
}

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

button {
    font-family: inherit;
    color: inherit;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-page);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
}

/* App Header */
.app-header {
    height: 52px;
    border-bottom: 1px solid var(--border-subtle);
    background-color: var(--bg-page);
}

.header-container {
    max-width: 1024px;
    height: 100%;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-group {
    cursor: pointer;
    user-select: none;
}

.brand-title {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.online-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 4px 10px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background-color: var(--bg-card);
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--color-success);
}

.status-dot.searching {
    background-color: var(--color-warning);
}

.status-dot.disconnected {
    background-color: var(--color-danger);
}

.nav-btn {
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.82rem;
    font-family: inherit;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.nav-btn:hover {
    color: var(--text-main);
    border-color: var(--border-hover);
    background-color: var(--bg-subtle);
}

/* Network Dropdown Menu */
.network-dropdown-container {
    position: relative;
}

.btn-network {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.network-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-accent);
}

.network-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    width: 250px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    display: none;
    flex-direction: column;
    z-index: 1000;
    overflow: hidden;
}

.network-dropdown-container:hover .network-dropdown,
.network-dropdown-container:focus-within .network-dropdown,
.network-dropdown.active {
    display: flex;
}

.network-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    text-decoration: none;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-subtle);
    transition: background 0.15s ease;
}

.network-item:last-child {
    border-bottom: none;
}

.network-item:hover {
    background-color: var(--bg-subtle);
}

.item-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.item-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.item-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
}

.item-desc {
    font-size: 0.75rem;
    color: var(--text-dim);
}

/* Sister Apps Section (Lobby Footer) */
.sister-apps-container {
    margin-top: 14px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sister-apps-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
}

.sister-apps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.sister-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background-color: var(--bg-card);
    text-decoration: none;
    color: inherit;
    transition: all 0.15s ease;
}

.sister-card:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-subtle);
    transform: translateY(-1px);
}

.sister-icon {
    font-size: 1.35rem;
    line-height: 1.2;
}

.sister-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.sister-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
}

.sister-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.35;
}

/* App Main & Screen Router */
.app-main {
    height: calc(100% - 52px);
    width: 100%;
    position: relative;
}

.screen {
    display: none;
    width: 100%;
    height: 100%;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

/* ========================================================
   SCREEN 1: LOBBY
   ======================================================== */
#screen-lobby {
    overflow-y: auto;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
}

.lobby-container {
    max-width: 580px;
    width: 100%;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.lobby-header {
    text-align: center;
}

.main-title {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.8px;
    color: var(--text-main);
    margin-bottom: 8px;
}

.main-desc {
    font-size: 1rem;
    color: var(--text-muted);
}

/* Mode Selection Cards */
.mode-selection {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.btn-mode {
    padding: 22px 18px;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: all 0.15s ease;
    border: 1px solid var(--border-subtle);
    background-color: var(--bg-card);
    color: var(--text-main);
}

.btn-mode:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-subtle);
}

.mode-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.2px;
    color: var(--text-main);
}

.mode-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Interests Box */
.interests-box {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 20px;
    background-color: var(--bg-card);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.interests-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.interests-label {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-main);
}

.interests-help {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.tags-wrapper {
    background-color: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.tags-wrapper:focus-within {
    border-color: var(--border-hover);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-badge {
    background-color: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 3px 8px;
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tag-remove {
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.tag-remove:hover {
    color: var(--color-danger);
}

.tag-input {
    flex: 1;
    min-width: 180px;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
}

.tag-input::placeholder {
    color: var(--text-dim);
}

.suggested-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.suggested-title {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
}

.tag-chip {
    background: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    padding: 4px 10px;
    font-size: 0.8rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.tag-chip:hover {
    color: var(--text-main);
    border-color: var(--border-hover);
    background-color: var(--border-subtle);
}

.lobby-footer-note {
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-dim);
}

/* ========================================================
   SCREEN 2: CHAT INTERFACE
   ======================================================== */
#screen-chat {
    overflow: hidden;
}

.chat-layout {
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
}

/* Chat Topbar */
.chat-topbar {
    height: 48px;
    border-bottom: 1px solid var(--border-subtle);
    background-color: var(--bg-page);
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-status-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-text {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-main);
}

.common-badge {
    background-color: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

.btn-link {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
}

.btn-link:hover {
    color: var(--text-main);
    text-decoration: underline;
}

/* Chat Body */
.chat-body {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Video Stage */
.video-stage {
    flex: 1;
    min-width: 300px;
    background-color: #000000;
    display: flex;
    position: relative;
    border-right: 1px solid var(--border-subtle);
}

.remote-video-box {
    width: 100%;
    height: 100%;
    position: relative;
}

.remote-video-box video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay-status {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    background-color: #09090b;
}

.local-video-box {
    position: absolute;
    bottom: 14px;
    right: 14px;
    width: 170px;
    height: 128px;
    background-color: #121215;
    border: 1px solid #3f3f46;
    border-radius: var(--radius-sm);
    overflow: hidden;
    z-index: 5;
}

.local-video-box video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
}

.video-tag {
    position: absolute;
    top: 6px;
    left: 6px;
    background: rgba(0, 0, 0, 0.75);
    color: #ffffff;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 2px;
}

.video-controls {
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.btn-video-ctrl {
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid #52525b;
    color: #ffffff;
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 2px;
    cursor: pointer;
}

.btn-video-ctrl.muted {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
}

/* Messages Feed */
.messages-feed {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background-color: var(--bg-page);
}

.search-prompt {
    margin: auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.search-text {
    font-size: 1rem;
    color: var(--text-main);
}

.btn-cancel {
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.btn-cancel:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

.messages-stream {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 680px;
    width: 100%;
    margin: 0 auto;
}

.msg-row {
    display: flex;
    flex-direction: column;
}

.msg-row.you {
    align-items: flex-end;
}

.msg-row.stranger {
    align-items: flex-start;
}

.msg-bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    line-height: 1.45;
    word-break: break-word;
}

.msg-row.you .msg-bubble {
    background-color: var(--bubble-you-bg);
    color: var(--bubble-you-text);
}

.msg-row.stranger .msg-bubble {
    background-color: var(--bubble-stranger-bg);
    color: var(--bubble-stranger-text);
    border: 1px solid var(--bubble-stranger-border);
}

.msg-meta {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 3px;
    padding: 0 4px;
}

.msg-system {
    align-self: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 6px 12px;
    text-align: center;
}

.msg-system.disconnected {
    color: var(--color-danger);
    font-weight: 500;
}

.msg-system.connected {
    color: var(--text-main);
    font-weight: 500;
}

.typing-notice {
    font-size: 0.82rem;
    color: var(--text-muted);
    max-width: 680px;
    margin: 0 auto;
    width: 100%;
}

/* Chat Controls Bar */
.chat-controls {
    height: 64px;
    border-top: 1px solid var(--border-subtle);
    background-color: var(--bg-page);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.ctrl-btn-container {
    flex-shrink: 0;
}

.btn-step {
    height: 44px;
    min-width: 96px;
    padding: 0 14px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    transition: all 0.1s ease;
    user-select: none;
    border: 1px solid var(--border-subtle);
}

.control-key {
    font-size: 0.68rem;
    font-weight: 500;
    opacity: 0.8;
}

/* Step States */
.btn-step.btn-step-stop {
    background-color: var(--bg-subtle);
    color: var(--text-main);
    border-color: var(--border-subtle);
}

.btn-step.btn-step-stop:hover {
    background-color: var(--border-subtle);
    border-color: var(--border-hover);
}

.btn-step.btn-step-really {
    background-color: var(--color-danger);
    color: #ffffff;
    border-color: var(--color-danger);
}

.btn-step.btn-step-new {
    background-color: var(--color-primary);
    color: var(--color-primary-text);
    border-color: var(--color-primary);
}

.chat-form {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    height: 44px;
}

.input-msg {
    flex: 1;
    height: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0 14px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.92rem;
    outline: none;
}

.input-msg:focus {
    border-color: var(--border-hover);
}

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

.btn-submit {
    height: 100%;
    padding: 0 18px;
    background-color: var(--color-primary);
    color: var(--color-primary-text);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.15s;
}

.btn-submit:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-submit:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Utilities */
.d-none {
    display: none !important;
}

@media (max-width: 768px) {
    .mode-selection {
        grid-template-columns: 1fr;
    }

    .chat-body {
        flex-direction: column;
    }

    .video-stage {
        height: 40%;
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
    }

    .local-video-box {
        width: 110px;
        height: 82px;
    }
}