/* ============================================
   AI SUPPORT WIDGET — Nilphamari District Bar Association
   Self-contained component. Include on any page.
   ============================================ */

/* ---------- Variables ---------- */
:root {
    --ai-navy: #071B3A;
    --ai-navy-light: #0d1b5e;
    --ai-gold: #C9A227;
    --ai-gold-light: #E5C76B;
    --ai-ivory: #F7F4EC;
    --ai-white: #FFFFFF;
    --ai-text: #172033;
    --ai-muted: #64748B;
    --ai-border: #E2E8F0;
    --ai-shadow: 0 8px 32px rgba(7,27,58,.18);
    --ai-shadow-lg: 0 16px 48px rgba(7,27,58,.22);
    --ai-radius: 20px;
}

/* ---------- Reset widget scope ---------- */
#ai-widget * { box-sizing: border-box; }

/* ---------- Floating Button ---------- */
#ai-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 99999;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ai-navy) 0%, var(--ai-navy-light) 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(7,27,58,.35), 0 0 0 0 rgba(201,162,39,.4);
    transition: transform .3s ease, box-shadow .3s ease;
    outline: none;
}
#ai-fab:hover { transform: scale(1.08); box-shadow: 0 6px 28px rgba(7,27,58,.4), 0 0 0 0 rgba(201,162,39,.4); }
#ai-fab:active { transform: scale(.96); }
#ai-fab .ai-fab-icon { color: #fff; font-size: 22px; line-height: 1; }
#ai-fab .ai-fab-badge {
    position: absolute;
    top: -2px; right: -2px;
    width: 22px; height: 22px;
    background: var(--ai-gold);
    color: var(--ai-navy);
    font-size: 9px;
    font-weight: 800;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    border: 2px solid var(--ai-white);
    letter-spacing: .3px;
}
#ai-fab .ai-fab-tooltip {
    position: absolute;
    right: 72px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--ai-navy);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s;
}
#ai-fab:hover .ai-fab-tooltip { opacity: 1; }
#ai-fab .ai-fab-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 5px solid transparent;
    border-left-color: var(--ai-navy);
}

/* Pulse ring */
#ai-fab::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid var(--ai-gold);
    opacity: 0;
    animation: ai-pulse-ring 2.5s ease-out infinite;
}
@keyframes ai-pulse-ring {
    0% { transform: scale(.85); opacity: .6; }
    100% { transform: scale(1.25); opacity: 0; }
}

/* ---------- Chat Window ---------- */
#ai-chat {
    position: fixed;
    bottom: 96px;
    right: 24px;
    z-index: 99998;
    width: 380px;
    height: 560px;
    max-height: 70vh;
    border-radius: var(--ai-radius);
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(226,232,240,.6);
    box-shadow: var(--ai-shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(.9) translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: transform .35s cubic-bezier(.34,1.56,.64,1), opacity .25s ease;
    font-family: 'Inter', 'Hind Siliguri', sans-serif;
}
#ai-chat.ai-open {
    transform: scale(1) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* ---------- Header ---------- */
.ai-header {
    background: linear-gradient(135deg, var(--ai-navy) 0%, var(--ai-navy-light) 100%);
    padding: 16px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.ai-header-avatar {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--ai-gold) 0%, var(--ai-gold-light) 100%);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.ai-header-info { flex: 1; min-width: 0; }
.ai-header-title { color: #fff; font-size: 14px; font-weight: 700; line-height: 1.2; }
.ai-header-sub { color: rgba(255,255,255,.6); font-size: 11px; margin-top: 1px; }
.ai-header-status {
    display: flex; align-items: center; gap: 5px;
    color: #4ade80; font-size: 11px; font-weight: 600; margin-top: 3px;
}
.ai-header-status::before {
    content: '';
    width: 7px; height: 7px;
    background: #4ade80;
    border-radius: 50%;
    display: inline-block;
    animation: ai-status-blink 2s ease infinite;
}
@keyframes ai-status-blink {
    0%,100% { opacity: 1; }
    50% { opacity: .4; }
}
.ai-header-actions { display: flex; gap: 4px; }
.ai-header-btn {
    width: 32px; height: 32px;
    border-radius: 8px;
    border: none;
    background: rgba(255,255,255,.1);
    color: rgba(255,255,255,.7);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s, color .2s;
    font-size: 14px;
}
.ai-header-btn:hover { background: rgba(255,255,255,.2); color: #fff; }

/* ---------- Messages ---------- */
.ai-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}
.ai-messages::-webkit-scrollbar { width: 4px; }
.ai-messages::-webkit-scrollbar-track { background: transparent; }
.ai-messages::-webkit-scrollbar-thumb { background: var(--ai-border); border-radius: 4px; }

.ai-msg { display: flex; gap: 8px; max-width: 88%; animation: ai-msg-in .3s ease; }
@keyframes ai-msg-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.ai-msg.ai { align-self: flex-start; }
.ai-msg.user { align-self: flex-end; flex-direction: row-reverse; }

.ai-msg-avatar {
    width: 30px; height: 30px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 2px;
}
.ai-msg.ai .ai-msg-avatar {
    background: linear-gradient(135deg, var(--ai-gold) 0%, var(--ai-gold-light) 100%);
}
.ai-msg.user .ai-msg-avatar {
    background: var(--ai-navy);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
}

.ai-msg-bubble {
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 13px;
    line-height: 1.55;
    color: var(--ai-text);
}
.ai-msg.ai .ai-msg-bubble {
    background: var(--ai-white);
    border: 1px solid var(--ai-border);
    border-bottom-left-radius: 4px;
}
.ai-msg.user .ai-msg-bubble {
    background: var(--ai-navy);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.ai-msg-time {
    font-size: 10px;
    color: var(--ai-muted);
    margin-top: 4px;
    padding: 0 2px;
}
.ai-msg.user .ai-msg-time { text-align: right; }

.ai-msg-bubble a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
    padding: 5px 12px;
    background: var(--ai-navy);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: background .2s;
}
.ai-msg-bubble a:hover { background: var(--ai-navy-light); }

/* ---------- Quick Actions ---------- */
.ai-quick {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}
.ai-quick-btn {
    padding: 6px 12px;
    border-radius: 20px;
    border: 1.5px solid var(--ai-border);
    background: var(--ai-white);
    color: var(--ai-navy);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
    white-space: nowrap;
}
.ai-quick-btn:hover {
    border-color: var(--ai-gold);
    background: #FFFBEB;
    color: var(--ai-navy);
    box-shadow: 0 2px 8px rgba(201,162,39,.12);
}

/* ---------- Typing ---------- */
.ai-typing { display: flex; align-items: center; gap: 8px; padding: 4px 0; }
.ai-typing-dots { display: flex; gap: 3px; }
.ai-typing-dots span {
    width: 6px; height: 6px;
    background: var(--ai-muted);
    border-radius: 50%;
    animation: ai-dot-bounce .6s ease infinite;
}
.ai-typing-dots span:nth-child(2) { animation-delay: .15s; }
.ai-typing-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes ai-dot-bounce {
    0%,60%,100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}
.ai-typing-text { font-size: 11px; color: var(--ai-muted); font-style: italic; }

/* ---------- Input ---------- */
.ai-input-wrap {
    padding: 12px 14px;
    border-top: 1px solid var(--ai-border);
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,.8);
    flex-shrink: 0;
}
.ai-input {
    flex: 1;
    border: 1.5px solid var(--ai-border);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 13px;
    color: var(--ai-text);
    background: var(--ai-white);
    outline: none;
    transition: border-color .2s, box-shadow .2s;
    font-family: inherit;
    resize: none;
    min-height: 40px;
    max-height: 80px;
}
.ai-input:focus { border-color: var(--ai-navy); box-shadow: 0 0 0 3px rgba(7,27,58,.08); }
.ai-input::placeholder { color: #94A3B8; }

.ai-input-btn {
    width: 36px; height: 36px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s;
    font-size: 14px;
    flex-shrink: 0;
}
.ai-input-btn.ai-voice { background: var(--ai-ivory); color: var(--ai-navy); }
.ai-input-btn.ai-voice:hover { background: #ede8d8; }
.ai-input-btn.ai-attach { background: var(--ai-ivory); color: var(--ai-navy); }
.ai-input-btn.ai-attach:hover { background: #ede8d8; }
.ai-input-btn.ai-send {
    background: var(--ai-navy);
    color: #fff;
}
.ai-input-btn.ai-send:hover { background: var(--ai-navy-light); }
.ai-input-btn.ai-send:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
    #ai-fab {
        bottom: 16px;
        right: 16px;
        width: 54px;
        height: 54px;
    }
    #ai-fab .ai-fab-icon { font-size: 20px; }
    #ai-fab .ai-fab-tooltip { display: none; }

    #ai-chat {
        bottom: 0;
        right: 0;
        width: 100vw;
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }
}
@media (min-width: 641px) and (max-width: 1024px) {
    #ai-chat { width: 340px; height: 520px; }
}

/* ---------- Human Support Panel ---------- */
.ai-human-panel {
    margin-top: 10px;
    padding: 10px;
    background: var(--ai-ivory);
    border-radius: 12px;
    border: 1px solid rgba(201,162,39,.2);
}
.ai-human-panel p { font-size: 12px; color: var(--ai-text); margin-bottom: 8px; }
.ai-human-btns { display: flex; flex-wrap: wrap; gap: 6px; }
.ai-human-btn {
    padding: 5px 10px;
    border-radius: 8px;
    border: 1px solid var(--ai-border);
    background: var(--ai-white);
    font-size: 11px;
    font-weight: 600;
    color: var(--ai-navy);
    cursor: pointer;
    transition: all .2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.ai-human-btn:hover { border-color: var(--ai-gold); background: #FFFBEB; }

/* ---------- Admin Panel (hidden by default) ---------- */
#ai-admin-panel {
    display: none;
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100000;
    width: 480px;
    max-width: 95vw;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--ai-white);
    border-radius: 16px;
    box-shadow: 0 24px 64px rgba(0,0,0,.25);
    padding: 24px;
    font-family: 'Inter', sans-serif;
}
#ai-admin-panel h3 { font-size: 18px; font-weight: 700; color: var(--ai-navy); margin-bottom: 16px; }
#ai-admin-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 99999;
}
.ai-admin-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--ai-border);
}
.ai-admin-row label { font-size: 13px; font-weight: 600; color: var(--ai-text); }
.ai-admin-row input[type="text"],
.ai-admin-row textarea {
    width: 220px;
    padding: 6px 10px;
    border: 1px solid var(--ai-border);
    border-radius: 8px;
    font-size: 12px;
    font-family: inherit;
}
.ai-admin-toggle {
    width: 40px; height: 22px;
    border-radius: 11px;
    background: var(--ai-border);
    border: none;
    cursor: pointer;
    position: relative;
    transition: background .2s;
}
.ai-admin-toggle.on { background: var(--ai-gold); }
.ai-admin-toggle::after {
    content: '';
    position: absolute;
    top: 3px; left: 3px;
    width: 16px; height: 16px;
    background: #fff;
    border-radius: 50%;
    transition: transform .2s;
}
.ai-admin-toggle.on::after { transform: translateX(18px); }