#chat-widget-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Floating Chat Button */
#chat-widget-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    box-shadow: 0 10px 25px rgba(29, 78, 216, 0.35);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    outline: none;
}
#chat-widget-btn:hover {
    transform: scale(1.08) translateY(-3px);
    box-shadow: 0 14px 30px rgba(29, 78, 216, 0.45);
}
#chat-widget-btn:active {
    transform: scale(0.95);
}
#chat-widget-btn::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background: #10B981;
    border: 3px solid #fff;
    border-radius: 50%;
    top: 2px;
    right: 2px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Chat Widget Box */
#chat-widget-box {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 380px;
    height: 560px;
    max-height: calc(100vh - 120px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform-origin: bottom right;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    transform: scale(1) translateY(0);
}

#chat-widget-box.chat-closed {
    opacity: 0;
    transform: scale(0.85) translateY(20px);
    pointer-events: none;
}

/* Header */
#chat-widget-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 1.1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    z-index: 10;
}
.chat-header-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}
.chat-avatar-wrapper {
    position: relative;
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
.online-indicator {
    position: absolute;
    width: 10px;
    height: 10px;
    background: #10B981;
    border: 2px solid var(--primary);
    border-radius: 50%;
    bottom: -2px;
    right: -2px;
    animation: pulse-green 2s infinite;
}
@keyframes pulse-green {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.chat-header-text {
    display: flex;
    flex-direction: column;
}
.chat-header-text strong {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    line-height: 1.2;
    color: white;
}
.chat-header-text span {
    font-size: 0.75rem;
    opacity: 0.9;
    margin-top: 2px;
    color: rgba(255, 255, 255, 0.9);
}
.chat-header-close {
    background: rgba(255,255,255,0.15);
    border: none;
    color: white;
    cursor: pointer;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: all 0.2s;
}
.chat-header-close:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.05);
}
.chat-header-action-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    cursor: pointer;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: all 0.2s;
}
.chat-header-action-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

/* Setup Screen */
#chat-setup-screen {
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex: 1;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.03) 0%, rgba(248, 250, 252, 1) 100%);
    overflow-y: auto;
}
.setup-welcome {
    text-align: center;
    margin-bottom: 1.5rem;
}
.setup-icon-box {
    width: 64px;
    height: 64px;
    background: rgba(29, 78, 216, 0.1);
    color: var(--primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto 1.25rem;
}
.setup-welcome h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.5rem;
}
.setup-welcome p {
    font-size: 0.85rem;
    color: #64748b;
    line-height: 1.5;
    margin: 0;
}

.chat-input-wrapper {
    position: relative;
    margin-bottom: 1rem;
}
.chat-input-wrapper .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 0.95rem;
}
.chat-input-wrapper input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.6rem !important;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    font-size: 0.9rem;
    outline: none;
    background: white;
    transition: all 0.25s ease;
}
.chat-input-wrapper input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}
.chat-submit-btn {
    width: 100%;
    padding: 0.8rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(29, 78, 216, 0.2);
    transition: all 0.2s;
}
.chat-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(29, 78, 216, 0.3);
}

.chat-quick-actions {
    margin-top: 1.5rem;
    border-top: 1px solid #edf2f7;
    padding-top: 1.25rem;
}
.quick-title {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}
.quick-btn-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.quick-btn {
    background: white;
    border: 1px solid #e2e8f0;
    padding: 0.65rem 1rem;
    border-radius: 10px;
    font-size: 0.825rem;
    color: #475569;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}
.quick-btn i {
    color: var(--primary);
    font-size: 0.8rem;
}
.quick-btn:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    transform: translateX(4px);
    color: var(--primary);
}

/* Active Chat Screen */
#chat-active-screen {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    background: radial-gradient(circle at bottom left, rgba(99, 102, 241, 0.02) 0%, rgba(248, 250, 252, 1) 100%);
}
#chat-widget-messages {
    flex: 1;
    padding: 1.25rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
}

/* Message Bubbles Container */
.chat-message-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    margin-bottom: 14px;
    max-width: 85%;
}
.chat-message-row.student-row {
    align-self: flex-end;
    flex-direction: row-reverse;
}
.chat-message-row.admin-row {
    align-self: flex-start;
}

/* Avatar in Chat bubbles */
.chat-bubble-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.student-row .chat-bubble-avatar {
    background: #e2e8f0;
    color: #475569;
}

/* Bubbles */
.chat-bubble {
    padding: 10px 14px;
    font-size: 0.875rem;
    line-height: 1.45;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    word-break: break-word;
    position: relative;
}
.student-row .chat-bubble {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 16px 16px 4px 16px;
}
.admin-row .chat-bubble {
    background: white;
    color: #1e293b;
    border: 1px solid #e2e8f0;
    border-radius: 16px 16px 16px 4px;
}

.chat-bubble-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    font-size: 0.65rem;
    margin-top: 5px;
    opacity: 0.7;
}
.student-row .chat-bubble-meta {
    color: rgba(255, 255, 255, 0.9);
}
.admin-row .chat-bubble-meta {
    color: #64748b;
}
.chat-bubble-badge {
    background: rgba(29, 78, 216, 0.1);
    color: var(--primary);
    padding: 1px 4.5px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.6rem;
    text-transform: uppercase;
}
.student-row .chat-bubble-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Typing Indicator Styling */
#chat-typing-indicator {
    padding: 0 1.25rem 0.75rem 3.5rem;
    align-self: flex-start;
}
.typing-bubble {
    background: #e2e8f0;
    padding: 10px 14px;
    border-radius: 16px 16px 16px 4px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.typing-bubble .dot {
    width: 6px;
    height: 6px;
    background: #64748b;
    border-radius: 50%;
    animation: bounce-typing 1.4s infinite ease-in-out both;
}
.typing-bubble .dot:nth-child(1) { animation-delay: -0.32s; }
.typing-bubble .dot:nth-child(2) { animation-delay: -0.16s; }
@keyframes bounce-typing {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

/* Form */
#chat-widget-form {
    display: flex;
    border-top: 1px solid #e2e8f0;
    background: white;
    padding: 0.8rem 1rem;
    gap: 8px;
    align-items: center;
}
#chat-widget-input {
    flex: 1;
    border: 1px solid #e2e8f0;
    border-radius: 24px;
    padding: 0.7rem 1.1rem;
    outline: none;
    font-size: 0.875rem;
    transition: all 0.2s;
    background: #f8fafc;
}
#chat-widget-input:focus {
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.08);
}
.chat-send-btn {
    background: var(--primary);
    color: white;
    border: none;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.25s ease;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(29, 78, 216, 0.2);
}
.chat-send-btn:hover {
    transform: scale(1.08);
    background: var(--secondary);
    box-shadow: 0 6px 14px rgba(29, 78, 216, 0.3);
}
.chat-send-btn:active {
    transform: scale(0.95);
}

/* Responsive Breakpoints */
@media (max-width: 480px) {
    #chat-widget-box {
        position: fixed;
        bottom: 84px;
        right: 16px;
        left: 16px;
        width: auto;
        height: calc(100vh - 120px);
        max-height: none;
        border-radius: 20px;
    }
    #chat-widget-container {
        bottom: 16px;
        right: 16px;
    }
    #chat-widget-btn {
        width: 55px;
        height: 55px;
    }
}