/* Global chat panel — desktop right slide-in.
   Loaded on all authenticated pages alongside base.css / components.css.
   Mobile overrides live in chat.mobile.css (loaded at <=768px).

   Z-index ladder:
     .app-sidebar / .bottom-tabs  100
     .chat-panel                   90  ← here (below sidebar, above status menus)
     .status-menu                  70
     .status-bar                   50
     .modal-overlay              1000  (still above us — intentional)
*/

/* ===================================================================
   Chat toggle button (fixed bottom-right, desktop only)
   =================================================================== */
.chat-toggle-btn {
    /* Absolute so it pins to the bottom-right corner of .app-shell
       (its positioned ancestor), not the viewport. */
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    z-index: 90;

    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-0-5);
    width: 48px;
    height: 48px;
    padding: 0;

    background: var(--color-bg-panel-raised);
    border: 1px solid var(--color-border-active);
    border-radius: 50%;
    color: var(--color-accent-soft);
    cursor: pointer;
    font-family: var(--font-body);

    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.45);
    transition:
        background var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.chat-toggle-btn:hover {
    background: rgba(var(--color-accent-rgb), 0.12);
    border-color: var(--color-accent);
    color: var(--color-accent);
    box-shadow: 0 4px 20px rgba(var(--color-accent-rgb), 0.25);
}

.chat-toggle-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring), 0 4px 16px rgba(0, 0, 0, 0.45);
}

.chat-toggle-btn svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

/* ===================================================================
   Chat panel — slide-in drawer from the right
   =================================================================== */
#chat-panel {
    position: fixed;
    top: 0;                                 /* fill the full window height */
    right: 0;
    bottom: 0;
    z-index: 90;

    width: 390px;
    max-width: 100vw;

    display: flex;
    flex-direction: column;

    background: var(--color-bg-panel);
    border-left: 1px solid var(--color-border-subtle);
    box-shadow: -6px 0 24px rgba(0, 0, 0, 0.4);

    transform: translateX(100%);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    will-change: transform;
    overflow: hidden;
}

/* Open state — Alpine toggles this class */
#chat-panel.chat-panel--open {
    transform: translateX(0);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.55);
}

/* The full-screen .chat-page variant (comms/chat.html) is mobile-only;
   chat.mobile.css gives it display:flex below 768px. Hide it on desktop only.
   Scoped to a min-width query (not a bare rule) because comms/chat.html
   re-loads chat.css in its extra_css block *after* chat.mobile.css — a bare
   `.chat-page{display:none}` would then win at mobile width too and hide it. */
@media (min-width: 769px) {
    .chat-page {
        display: none;
    }
}

/* ===================================================================
   Panel header
   =================================================================== */
.chat-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-1);
    flex-shrink: 0;

    padding: 0 var(--space-2);
    height: 44px;

    background: var(--color-bg-panel-raised);
    border-bottom: 1px solid var(--color-border-subtle);
}

.chat-panel-title {
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.chat-panel-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-control);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.chat-panel-close:hover {
    background: rgba(var(--color-danger-rgb), 0.1);
    border-color: rgba(var(--color-danger-rgb), 0.35);
    color: var(--color-danger);
}

.chat-panel-close:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.chat-panel-close svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
}

/* ===================================================================
   Tab strip — Global / Federation
   =================================================================== */
.chat-tab-bar {
    display: flex;
    flex-shrink: 0;
    border-bottom: 1px solid var(--color-border-subtle);
    background: var(--color-bg-panel);
}

.chat-tab-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 var(--space-1);

    background: transparent;
    border: 0;
    border-bottom: 2px solid transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast),
        background var(--transition-fast);
    white-space: nowrap;
}

.chat-tab-btn:hover {
    color: var(--color-text-primary);
    background: rgba(var(--color-accent-rgb), 0.05);
}

.chat-tab-btn.active,
.chat-tab-btn[aria-selected="true"] {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.chat-tab-btn:focus-visible {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--color-accent);
    border-radius: 4px 4px 0 0;
}

/* Federation tab disabled when player has no federation */
.chat-tab-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* ===================================================================
   Message list (scrollable body)
   =================================================================== */
/* Error row above the input — replaces an inline style attribute, which the
   strict CSP (style-src-attr) blocks. */
.chat-error-row {
    padding: 0 var(--space-2) var(--space-1);
}

.chat-message-list {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 0;

    display: flex;
    flex-direction: column;
    gap: 0;

    padding: var(--space-1) 0;
    scroll-behavior: smooth;
    overscroll-behavior: contain;

    /* Thin scrollbar matching global style */
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-subtle) transparent;
}

.chat-message-list::-webkit-scrollbar {
    width: 6px;
}

.chat-message-list::-webkit-scrollbar-track {
    background: transparent;
}

.chat-message-list::-webkit-scrollbar-thumb {
    background: var(--color-border-subtle);
    border-radius: 3px;
}

.chat-message-list::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-active);
}

/* ===================================================================
   Individual message item
   =================================================================== */
.chat-message {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-0-5) var(--space-2);
    transition: background var(--transition-fast);
}

.chat-message:hover {
    background: rgba(255, 255, 255, 0.025);
}

/* Meta row: empire name + timestamp */
.chat-message-meta {
    display: flex;
    align-items: baseline;
    gap: var(--space-1);
    min-width: 0;
}

.chat-message-author {
    color: var(--color-accent-soft);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.chat-message-time {
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    flex-shrink: 0;
    white-space: nowrap;
}

/* Message body text */
.chat-message-body {
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    line-height: 1.45;
    word-break: break-word;
    overflow-wrap: anywhere;
}

/* ===================================================================
   Input row (pinned at panel bottom)
   =================================================================== */
.chat-input-row {
    flex-shrink: 0;
    display: flex;
    align-items: stretch;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    border-top: 1px solid var(--color-border-subtle);
    background: var(--color-bg-panel-raised);
}

.chat-input {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 36px;
    max-height: 96px;
    padding: var(--space-0-5) var(--space-1);
    resize: none;
    overflow-y: auto;

    background: var(--color-bg-input);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-control);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    line-height: 1.4;

    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.chat-input::placeholder {
    color: var(--color-text-muted);
}

.chat-input:hover {
    border-color: var(--color-border-active);
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: var(--focus-ring);
}

.chat-send-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    padding: 0;

    background: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-control);
    color: #061021;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.chat-send-btn:hover {
    background: var(--color-accent-soft);
    border-color: var(--color-accent-soft);
}

.chat-send-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.chat-send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.chat-send-btn svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}