/* RESET & GLOBAL */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(145deg, #D4E6F1 0%, #BBDEF0 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

/* Vibrant background orbs - blue tones */
.bg-orb-1 {
    position: fixed;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(30, 136, 229, 0.3) 0%, rgba(30, 136, 229, 0) 70%);
    border-radius: 50%;
    top: -30vh;
    left: -20vw;
    z-index: 0;
    animation: floatOrb 18s infinite alternate ease-in-out;
}

.bg-orb-2 {
    position: fixed;
    width: 50vw;
    height: 50vw;
    bottom: -25vh;
    right: -15vw;
    top: auto;
    left: auto;
    background: radial-gradient(circle, rgba(13, 71, 161, 0.25) 0%, rgba(13, 71, 161, 0) 70%);
    animation: floatOrb 22s infinite alternate-reverse;
}

.bg-orb-3 {
    position: fixed;
    width: 40vw;
    height: 40vw;
    bottom: 10%;
    left: -10%;
    background: radial-gradient(circle, rgba(66, 165, 245, 0.2) 0%, rgba(66, 165, 245, 0) 70%);
    animation: floatOrb 20s infinite alternate;
    z-index: 0;
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(45px, 35px) scale(1.12); }
}

/* main container */
.app-container {
    width: 100%;
    max-width: 900px;
    height: 85vh;
    min-height: 620px;
    z-index: 10;
    position: relative;
}

/* glass panel with blue accents */
.chat-glass-panel {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(24px);
    border-radius: 52px;
    box-shadow: 0 35px 60px -20px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.6) inset;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    transition: all 0.3s ease;
}

/* header styling - deep blue */
.chat-header {
    padding: 22px 30px;
    background: rgba(255, 255, 255, 0.75);
    border-bottom: 2px solid rgba(30, 136, 229, 0.5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    backdrop-filter: blur(8px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-wrapper {
    position: relative;
    background: linear-gradient(145deg, #1E88E5, #0D47A1);
    width: 56px;
    height: 56px;
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.9rem;
    box-shadow: 0 14px 26px rgba(13, 71, 161, 0.45);
    animation: subtleGlow 2s infinite alternate;
}

@keyframes subtleGlow {
    0% { box-shadow: 0 14px 26px rgba(13, 71, 161, 0.3); }
    100% { box-shadow: 0 18px 32px rgba(30, 136, 229, 0.6); }
}

.pulse-dot {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background: #00e676;
    border-radius: 50%;
    border: 2.5px solid white;
    animation: pulseGreen 1.6s infinite;
}

@keyframes pulseGreen {
    0% { transform: scale(0.9); opacity: 1; }
    70% { transform: scale(1.5); opacity: 0.5; }
    100% { transform: scale(0.9); opacity: 1; }
}

.brand-text h2 {
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #0D2B42, #1565C0);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.brand-text h2 span {
    background: linear-gradient(145deg, #1E88E5, #0D47A1);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

.brand-text p {
    font-size: 0.75rem;
    color: #1565C0;
    letter-spacing: 0.4px;
    font-weight: 600;
}

.header-badge {
    background: linear-gradient(115deg, rgba(30, 136, 229, 0.2), rgba(13, 71, 161, 0.15));
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #0D47A1;
    display: flex;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(30, 136, 229, 0.5);
}

/* messages area */
.messages-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 22px 28px;
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
}

.messages-wrapper::-webkit-scrollbar {
    width: 6px;
}

.messages-wrapper::-webkit-scrollbar-track {
    background: #eef5fa;
    border-radius: 10px;
}

.messages-wrapper::-webkit-scrollbar-thumb {
    background: #1E88E5;
    border-radius: 10px;
}

.messages-container {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

/* message bubbles */
.message {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    animation: fadeSlideUp 0.3s ease-out;
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-message {
    flex-direction: row-reverse;
}

.avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.user-avatar {
    background: linear-gradient(145deg, #1E88E5, #0D47A1);
    color: white;
    box-shadow: 0 8px 18px rgba(13, 71, 161, 0.35);
}

.bot-avatar {
    background: linear-gradient(145deg, #E3F2FD, #BBDEFB);
    color: #0D47A1;
    box-shadow: 0 4px 10px rgba(13, 71, 161, 0.15);
}

.bubble {
    max-width: 75%;
    padding: 14px 20px;
    border-radius: 28px;
    font-size: 0.94rem;
    line-height: 1.48;
    word-wrap: break-word;
    transition: all 0.2s;
}

.user-bubble {
    background: linear-gradient(135deg, #1E88E5, #0D47A1);
    color: white;
    border-bottom-right-radius: 8px;
    box-shadow: 0 12px 22px rgba(13, 71, 161, 0.35);
}

.bot-bubble {
    background: white;
    color: #1A2E42;
    border-bottom-left-radius: 8px;
    border: 1px solid rgba(30, 136, 229, 0.35);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
}

.message-text {
    display: block;
    white-space: pre-wrap;
}

.timestamp {
    font-size: 0.65rem;
    opacity: 0.7;
    margin-top: 6px;
    display: block;
}

.user-bubble .timestamp {
    text-align: right;
    color: rgba(255, 255, 255, 0.8);
}

/* typing indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 14px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.typing-indicator.active {
    opacity: 1;
    visibility: visible;
}

.typing-dots {
    background: white;
    padding: 14px 22px;
    border-radius: 40px;
    display: flex;
    gap: 8px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(30, 136, 229, 0.4);
}

.typing-dots span {
    width: 9px;
    height: 9px;
    background: #1E88E5;
    border-radius: 50%;
    display: inline-block;
    animation: waveTyping 1.3s infinite ease-in-out;
}

.typing-dots span:nth-child(1) { animation-delay: 0s; }
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes waveTyping {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-7px); opacity: 1; }
}

/* input panel - deep blue theme */
.input-panel {
    padding: 18px 28px 28px;
    background: rgba(255, 255, 255, 0.88);
    border-top: 2px solid rgba(30, 136, 229, 0.35);
}

.input-container {
    display: flex;
    align-items: center;
    gap: 14px;
    background: white;
    border-radius: 80px;
    padding: 6px 6px 6px 24px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05), 0 0 0 1px #CDE5F7;
    transition: all 0.25s;
}

.input-container:focus-within {
    box-shadow: 0 16px 32px rgba(13, 71, 161, 0.2), 0 0 0 3px #1E88E5;
}

.input-container input {
    flex: 1;
    border: none;
    padding: 16px 0;
    font-size: 0.98rem;
    background: transparent;
    outline: none;
    font-family: 'Inter', monospace;
    color: #0D2B42;
    font-weight: 500;
}

.input-container input::placeholder {
    color: #9AB8D9;
    font-weight: 500;
}

.mic-btn, .send-btn {
    background: transparent;
    border: none;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    cursor: pointer;
    transition: 0.25s;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mic-btn {
    color: #1E88E5;
}

.mic-btn:hover {
    background: #E3F2FD;
    color: #0D47A1;
    transform: scale(1.05);
}

.send-btn {
    background: linear-gradient(145deg, #1E88E5, #0D47A1);
    color: white;
    box-shadow: 0 8px 18px rgba(13, 71, 161, 0.45);
}

.send-btn:hover {
    background: linear-gradient(145deg, #1E79C4, #0B3D8F);
    transform: scale(1.05);
    box-shadow: 0 10px 22px rgba(13, 71, 161, 0.55);
}

.input-note {
    text-align: center;
    font-size: 0.72rem;
    margin-top: 16px;
    color: #1565C0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}

/* medical cross decoration */
.medical-cross {
    position: absolute;
    bottom: 20px;
    right: -8px;
    font-size: 100px;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

.medical-cross::before {
    content: "⚕️";
    font-size: 120px;
}

/* responsive */
@media (max-width: 650px) {
    .app-container {
        height: 92vh;
    }
    .bubble {
        max-width: 85%;
    }
    .chat-header {
        padding: 16px 20px;
    }
    .brand-text h2 {
        font-size: 1.4rem;
    }
    .icon-wrapper {
        width: 48px;
        height: 48px;
        font-size: 1.6rem;
    }
}