:root {
    /* --- THEME PALETTE: Tropical Rainforest & Cute Sloth --- */

    /* The Sloth (Warm, cute, soft browns for interactive elements) */
    --color-accent: #c49a6c; /* Cute Caramel/Tan (Buttons, Avatars) */
    --color-accent-hover: #a67c52; /* Deep Sloth Fur (Hover States, Dashed Borders) */

    /* The Rainforest (Deep, rich jungle greens for UI structure) */
    --color-bg-secondary: #34463f; /* Lighter Canopy (User Cards, Chat Bubbles) */
    --color-bg-panel: #25322d; /* Mid Jungle (Main App Area, Login Box) */
    --color-bg-deep: #1a2421; /* Deepest Shadows (Sidebar, Inputs, Background) */

    /* --- TEXT & SEMANTICS --- */
    --color-text-main: #f4ecd8; /* Sloth Face Cream (Warm Off-White Text) */

    /* Tropical accents for actions */
    --color-danger: #e05a6d; /* Tropical Flora Pink/Red (Stop Voice, Delete) */
    --color-danger-hover: #ff768a; /* Bright Flora (Error Messages, Delete Hover) */
    --color-success: #75d977; /* Bright Tree-frog Green (Active Speaker Indicator) */

    /* --- OPACITIES & SHADOWS --- */
    --color-accent-alpha: rgba(
        196,
        154,
        108,
        0.15
    ); /* Faint caramel for hover backgrounds */
    --color-overlay-dark: rgba(0, 0, 0, 0.25);
    --shadow-light: rgba(0, 0, 0, 0.5);
    --shadow-mid: rgba(0, 0, 0, 0.6);
    --shadow-heavy: rgba(0, 0, 0, 0.7);
}
body {
    font-family:
        system-ui,
        -apple-system,
        sans-serif;
    background-color: var(--color-bg-deep); /* Fallback */
    background-image: url("forest.jpg");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    color: var(--color-text-main);
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

/* --- UTILITY CLASSES --- */
.hidden {
    display: none !important;
}
.login-subtitle {
    font-size: 0.8rem;
    color: var(--color-accent-hover);
    margin-bottom: 20px;
}
.view-title {
    margin: 0;
}
.button-group {
    display: flex;
    gap: 10px;
}
.btn-half {
    flex: 1;
}
.btn-main {
    flex: 2;
}
.current-user-name {
    font-weight: bold;
    flex: 1;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.user-name {
    flex: 1;
}
.empty-text {
    color: var(--color-accent-hover);
    font-size: 0.9rem;
    text-align: center;
}

/* Authentication Views */
#login {
    background: var(--color-bg-panel);
    padding: 2rem;
    border-radius: 8px;
    width: 350px;
    max-width: 90vw;
    box-sizing: border-box;
    box-shadow: 0 10px 30px var(--shadow-mid);
}
.auth-view {
    display: none;
    flex-direction: column;
    gap: 15px;
}
.auth-view.active {
    display: flex;
}
.version-tag {
    text-align: center;
    color: var(--color-accent-hover);
    font-size: 0.8rem;
    margin-top: 10px;
    font-weight: bold;
}

.user-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 5px;
}
.user-card {
    background: var(--color-bg-secondary);
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: 0.2s;
    font-weight: bold;
    position: relative;
}
.user-card:hover {
    background: var(--color-accent-hover);
    color: var(--color-bg-deep);
    transform: translateY(-2px);
}
.user-card .avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--color-accent);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-bg-deep);
    font-size: 1.2rem;
}

/* THE SHIFT + HOVER DELETE BUTTON */
.delete-btn {
    display: none;
    position: absolute;
    right: 10px;
    background: var(--color-danger);
    color: var(--color-text-main);
    border: none;
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.8rem;
    cursor: pointer;
    font-weight: bold;
}
.delete-btn:hover {
    background: var(--color-danger-hover);
}
body.shift-down .user-card:hover .delete-btn {
    display: block;
}

/* Base Inputs & Buttons */
input[type="text"],
input[type="password"] {
    padding: 10px;
    border-radius: 6px;
    border: none;
    background: var(--color-bg-deep);
    color: var(--color-text-main);
    outline: none;
    flex: 1;
}

button {
    background: var(--color-accent);
    color: var(--color-bg-deep);
    border: none;
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
button:hover {
    background: var(--color-accent-hover);
    color: var(--color-bg-deep);
}
button.active {
    background: var(--color-danger);
    color: var(--color-text-main);
}

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text-main);
}
.btn-secondary:hover {
    background: var(--color-accent-hover);
    color: var(--color-bg-deep);
}
.btn-icon {
    background: transparent;
    font-size: 1.2rem;
    padding: 5px;
    color: var(--color-accent-hover);
}
.btn-icon:hover {
    background: var(--color-bg-secondary);
    color: var(--color-accent);
}

.btn-dashed {
    background: transparent;
    border: 2px dashed var(--color-accent-hover);
    color: var(--color-accent-hover);
    padding: 12px;
}
.btn-dashed:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-alpha);
}
.btn-dashed-sm {
    background: transparent;
    border: 1px dashed var(--color-accent-hover);
    color: var(--color-accent-hover);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-left: auto;
}
.btn-dashed-sm:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-alpha);
}

.error-msg {
    color: var(--color-danger-hover);
    font-size: 0.9rem;
    margin: 0;
    text-align: center;
}

/* --- RESPONSIVE APP LAYOUT --- */
#app {
    width: 95vw;
    max-width: 1200px;
    height: 90vh;
    background: var(--color-bg-panel);
    border-radius: 12px;
    box-shadow: 0 15px 40px var(--shadow-heavy);
    display: flex;
    overflow: hidden;
    position: relative;
}

/* Panel 1: Sidebar (Channels + Voice + Footer) */
.sidebar {
    width: 260px;
    background: var(--color-bg-deep);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--color-bg-panel);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
}
.sidebar-header {
    padding: 15px;
    font-weight: bold;
    border-bottom: 1px solid var(--color-bg-panel);
    display: flex;
    align-items: center;
}

#channelList {
    list-style: none;
    padding: 10px;
    margin: 0;
    flex: 1;
    overflow-y: auto;
}
#channelList li {
    padding: 8px 12px;
    margin-bottom: 5px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--color-accent-hover);
    transition: 0.1s;
}
#channelList li:hover {
    background: var(--color-bg-panel);
    color: var(--color-text-main);
}
#channelList li.active {
    background: var(--color-bg-secondary);
    color: var(--color-text-main);
    font-weight: bold;
}

/* Voice Section inside Sidebar */
.sidebar-voice {
    background: var(--color-bg-deep);
    padding: 10px 15px;
    border-bottom: 1px solid var(--color-bg-panel);
    max-height: 180px;
    overflow-y: auto;
}
.voice-header {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--color-accent-hover);
    text-transform: uppercase;
    margin-bottom: 8px;
}
#voiceList {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
}
#voiceList li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    color: var(--color-text-main);
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    transition: 0.1s;
}
.indicator.speaking {
    background: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
}

.sidebar-footer {
    padding: 10px 15px;
    background: var(--color-overlay-dark);
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
}

/* Panel 2: Chat */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}
.chat-header {
    padding: 15px;
    font-weight: bold;
    border-bottom: 1px solid var(--color-bg-deep);
    background: var(--color-bg-panel);
    display: flex;
    align-items: center;
    gap: 10px;
}
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text-main);
    font-size: 1.5rem;
    padding: 0;
    margin: 0;
}
#messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
#messages div {
    background: var(--color-bg-secondary);
    color: var(--color-text-main);
    padding: 8px 12px;
    border-radius: 6px;
    width: fit-content;
    max-width: 85%;
    word-wrap: break-word;
}
.input-area {
    padding: 1rem;
    background: var(--color-bg-panel);
    display: flex;
    gap: 10px;
}

/* --- MOBILE SPECIFIC FIXES --- */
@media (max-width: 768px) {
    #app {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
    }

    .sidebar {
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        box-shadow: 10px 0 20px var(--shadow-light);
    }
    .sidebar.active {
        transform: translateX(0);
    }

    .mobile-menu-btn {
        display: block;
    }
}