:root {
    --gt-bg-dark: #0d1117;
    --gt-bg-panel: #161b22;
    --gt-bg-card: #21262d;
    --gt-cyan: #00d2ff;
    --gt-emerald: #00e676;
    --gt-text: #f0f6fc;
    --gt-muted: #8b949e;
    --gt-border: #30363d;
    --gt-bubble-self: #0d443c;
    --gt-bubble-peer: #1f242c;
    --gt-danger: #f85149;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    user-select: none;
}

body, html {
    background-color: #03060a;
    color: var(--gt-text);
    height: 100%;
    width: 100%;
    overflow: hidden;
}

#smsgtpro-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 480px;
    margin: 0 auto;
    background-color: var(--gt-bg-dark);
    position: relative;
    border-left: 1px solid var(--gt-border);
    border-right: 1px solid var(--gt-border);
}

/* Cabecera Principal */
.gt-header {
    background-color: var(--gt-bg-panel);
    padding: 14px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gt-border);
}

.gt-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--gt-text);
    display: flex;
    align-items: center;
    gap: 6px;
}
.gt-brand span { color: var(--gt-cyan); }

.gt-header-tools {
    display: flex;
    gap: 16px;
}
.gt-tool-btn {
    background: none;
    border: none;
    color: var(--gt-muted);
    font-size: 18px;
    cursor: pointer;
}
.gt-tool-btn:hover { color: var(--gt-cyan); }

/* Filtros */
.gt-filter-bar {
    display: flex;
    gap: 8px;
    padding: 10px 16px;
    background-color: var(--gt-bg-panel);
    overflow-x: auto;
}
.gt-chip {
    padding: 6px 14px;
    border-radius: 16px;
    background-color: var(--gt-bg-card);
    color: var(--gt-muted);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    border: 1px solid transparent;
}
.gt-chip.active {
    background-color: rgba(0, 210, 255, 0.15);
    color: var(--gt-cyan);
    border-color: var(--gt-cyan);
}

/* Lista de Chats */
.gt-chat-list {
    flex: 1;
    overflow-y: auto;
}
.gt-chat-entry {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    cursor: pointer;
}
.gt-chat-entry:hover { background-color: var(--gt-bg-panel); }

.gt-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1f242c, #2b323c);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--gt-cyan);
    border: 2px solid var(--gt-border);
    margin-right: 14px;
    flex-shrink: 0;
}
.gt-chat-info { flex: 1; min-width: 0; }
.gt-chat-row { display: flex; justify-content: space-between; margin-bottom: 4px; }
.gt-chat-title { font-size: 15px; font-weight: 600; color: var(--gt-text); }
.gt-chat-time { font-size: 12px; color: var(--gt-muted); }
.gt-chat-sub { font-size: 13px; color: var(--gt-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Vista de Conversación */
.gt-active-chat {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--gt-bg-dark);
    display: flex; flex-direction: column;
    z-index: 50;
}
.gt-messages-box {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.gt-bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.4;
    word-break: break-word;
}
.gt-bubble-out {
    align-self: flex-end;
    background-color: var(--gt-bubble-self);
    border-bottom-right-radius: 2px;
}
.gt-bubble-in {
    align-self: flex-start;
    background-color: var(--gt-bubble-peer);
    border-bottom-left-radius: 2px;
}
.gt-bubble-footer {
    display: flex;
    justify-content: flex-end;
    gap: 4px;
    font-size: 10px;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

/* Reproductor de Audio / Nota de voz */
.gt-voice-player {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 0;
}
.gt-play-btn {
    width: 36px; height: 36px;
    border-radius: 50%;
    background-color: var(--gt-cyan);
    color: #03060a;
    border: none;
    cursor: pointer;
    font-size: 14px;
    display: flex; align-items: center; justify-content: center;
}
.gt-wave {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 3px;
    height: 22px;
}
.gt-bar {
    width: 3px;
    border-radius: 2px;
    background-color: var(--gt-muted);
}

/* Barra de Entrada */
.gt-input-container {
    background-color: var(--gt-bg-panel);
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-top: 1px solid var(--gt-border);
}
.gt-input-box {
    flex: 1;
    background-color: var(--gt-bg-card);
    border-radius: 20px;
    padding: 6px 14px;
    display: flex;
    align-items: center;
    border: 1px solid var(--gt-border);
}
.gt-input-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--gt-text);
    outline: none;
    font-size: 14px;
}
.gt-mic-btn {
    width: 42px; height: 42px;
    border-radius: 50%;
    background-color: var(--gt-cyan);
    color: #03060a;
    border: none;
    cursor: pointer;
    font-size: 18px;
    display: flex; align-items: center; justify-content: center;
}

/* Barra Inferior */
.gt-bottom-tabs {
    background-color: var(--gt-bg-panel);
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
    border-top: 1px solid var(--gt-border);
}
.gt-tab-button {
    background: none;
    border: none;
    color: var(--gt-muted);
    font-size: 11px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}
.gt-tab-button.active {
    color: var(--gt-cyan);
    font-weight: 600;
}

.gt-fab {
    position: absolute;
    bottom: 74px;
    right: 18px;
    width: 52px; height: 52px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--gt-cyan), var(--gt-emerald));
    color: #03060a;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 210, 255, 0.4);
}

.hidden { display: none !important; }

/* Buscador dinámico */
.gt-search-wrapper {
    background-color: var(--gt-bg-panel);
    padding: 8px 16px 12px;
    border-bottom: 1px solid var(--gt-border);
}
.gt-search-input-box {
    background-color: var(--gt-bg-card);
    border: 1px solid var(--gt-border);
    border-radius: 12px;
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.gt-search-input-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--gt-text);
    outline: none;
    font-size: 14px;
}

/* Menú Dropdown (3 puntos) */
.gt-dropdown {
    position: absolute;
    top: 55px;
    right: 14px;
    background-color: var(--gt-bg-card);
    border: 1px solid var(--gt-border);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.6);
    z-index: 100;
    min-width: 210px;
    padding: 6px 0;
}
.dropdown-item {
    padding: 12px 18px;
    font-size: 14px;
    color: var(--gt-text);
    cursor: pointer;
    transition: background 0.15s;
}
.dropdown-item:hover { background-color: rgba(255,255,255,0.06); }
.dropdown-item.danger { color: var(--gt-danger); }
.dropdown-divider { height: 1px; background-color: var(--gt-border); margin: 4px 0; }

/* Gaveta de Adjuntos (Clip) */
.gt-attach-drawer {
    background-color: var(--gt-bg-panel);
    padding: 18px 14px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    border-top: 1px solid var(--gt-border);
}
.gt-attach-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--gt-muted);
    cursor: pointer;
}
.gt-attach-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

/* Modales */
.gt-modal {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.75);
    backdrop-filter: blur(4px);
    z-index: 150;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.gt-modal-content {
    background-color: var(--gt-bg-panel);
    border: 1px solid var(--gt-border);
    border-radius: 18px;
    padding: 24px;
    width: 100%;
    max-width: 360px;
    text-align: center;
}
.gt-btn-block {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--gt-cyan), var(--gt-emerald));
    border: none;
    color: #03060a;
    font-weight: 700;
    cursor: pointer;
}

/* Pantalla de autenticación */
.gt-auth-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--gt-bg-dark);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.gt-auth-box {
    background-color: var(--gt-bg-panel);
    border: 1px solid var(--gt-border);
    border-radius: 18px;
    padding: 28px 22px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.gt-input-field {
    width: 100%;
    background-color: var(--gt-bg-card);
    border: 1px solid var(--gt-border);
    color: var(--gt-text);
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 14px;
    outline: none;
    margin-bottom: 12px;
}
.gt-input-field:focus { border-color: var(--gt-cyan); }

/* Banner de notificación superior flotante */
.gt-toast-notification {
    position: absolute;
    top: 14px;
    left: 14px;
    right: 14px;
    background-color: var(--gt-bg-card);
    border: 1px solid var(--gt-border);
    border-radius: 14px;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    cursor: pointer;
    animation: slideDownToast 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDownToast {
    from { transform: translateY(-40px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.gt-toast-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gt-cyan), var(--gt-emerald));
    color: #03060a;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.gt-toast-body { flex: 1; min-width: 0; }
.gt-toast-header { display: flex; justify-content: space-between; margin-bottom: 2px; }
.gt-toast-name { font-size: 14px; font-weight: 600; color: var(--gt-text); }
.gt-toast-time { font-size: 11px; color: var(--gt-muted); }
.gt-toast-msg { font-size: 13px; color: var(--gt-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Contador verde de mensajes no leídos en la lista */
.gt-unread-pill {
    background-color: var(--gt-emerald);
    color: #03060a;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
}