frontend/src/components/VoiceCall.css

/* ========================================
   ARIA - VOICE CALL UI (Premium Aesthetics)
   ======================================== */

.voice-call-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: #020617; /* Deepest blue/black */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

/* Atmospheric Background Elements */
.voice-call-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.voice-call-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.15;
    animation: orb-flow 25s infinite alternate ease-in-out;
}

.orb-gold {
    width: 60vw;
    height: 60vw;
    background: #F5CE4D;
    top: -20%;
    left: -10%;
    animation-duration: 30s;
}

.orb-blue {
    width: 50vw;
    height: 50vw;
    background: #6366f1;
    bottom: -10%;
    right: -5%;
    animation-duration: 35s;
    animation-delay: -5s;
}

.orb-purple {
    width: 40vw;
    height: 40vw;
    background: #a855f7;
    top: 40%;
    left: 30%;
    animation-duration: 40s;
    animation-delay: -10s;
}

/* Star/Particle Effect */
.voice-call-stars {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(1px 1px at 20px 30px, #eee, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 40px 70px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 50px 160px, #ddd, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 90px 40px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 130px 80px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 160px 120px, #ddd, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 200px 200px;
    opacity: 0.1;
    animation: stars-twinkle 4s infinite alternate;
}

@keyframes stars-twinkle {
    from { opacity: 0.05; transform: scale(1); }
    to { opacity: 0.2; transform: scale(1.1); }
}

@keyframes orb-flow {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); }
    50% { transform: translate(100px, 50px) scale(1.1) rotate(60deg); }
    100% { transform: translate(-50px, 100px) scale(0.9) rotate(-30deg); }
}

/* Central Avatar & Pulse System */
.avatar-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 3rem;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.avatar-container.speaking {
    transform: scale(1.05);
}

.avatar-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245, 206, 77, 0.3) 0%, transparent 70%);
    opacity: 0.5;
    transition: all 0.5s ease;
}

.avatar-container.active .avatar-glow {
    animation: breathing-glow 4s infinite ease-in-out;
}

.avatar-container.speaking .avatar-glow {
    background: radial-gradient(circle, rgba(245, 206, 77, 0.6) 0%, transparent 70%);
    animation: resonance-glow 0.8s infinite alternate ease-in-out;
}

@keyframes breathing-glow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

@keyframes resonance-glow {
    0% { opacity: 0.5; transform: scale(1.1); }
    100% { opacity: 0.8; transform: scale(1.3); }
}

.avatar-image-wrapper {
    width: 240px;
    height: 240px;
    border-radius: 50%;
    padding: 8px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 5;
    overflow: hidden;
}

.avatar-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    transition: filter 1s ease;
}

.avatar-image.inactive {
    filter: grayscale(0.8) contrast(0.8);
}

/* Visualization Rings */
.ring {
    position: absolute;
    border: 1px solid rgba(245, 206, 77, 0.2);
    border-radius: 50%;
    pointer-events: none;
}

.ring-1 { width: 280px; height: 280px; animation: rotate-slow 20s infinite linear; }
.ring-2 { width: 320px; height: 320px; border-style: dashed; animation: rotate-slow 30s infinite linear reverse; }
.ring-3 { width: 400px; height: 400px; opacity: 0.1; animation: pulse-out 3s infinite ease-out; }

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse-out {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Typography & Info */
.voice-call-info {
    max-width: 600px;
    width: 100%;
    z-index: 10;
}

.status-label {
    font-size: 0.8rem;
    letter-spacing: 0.4em;
    color: #F5CE4D;
    text-transform: uppercase;
    font-weight: 800;
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.call-title {
    font-family: 'Playfair Display', serif;
    color: white;
    font-size: 3.5rem;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
    font-weight: 500;
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.transcript-panel {
    min-height: 120px;
    padding: 2rem;
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.25rem;
    line-height: 1.6;
    display: flex;
    align-items: center;
    justify-content: center;
    font-style: italic;
    font-weight: 300;
    box-shadow: 0 20px 80px rgba(0,0,0,0.4);
    transition: all 0.5s ease;
    animation: fade-in 1s ease-out;
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Controls */
.controls-bar {
    margin-top: auto;
    margin-bottom: 3rem;
    display: flex;
    gap: 2.5rem;
    align-items: center;
    padding: 1.25rem 2.5rem;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(25px);
    box-shadow: 0 25px 70px rgba(0,0,0,0.6);
    z-index: 100;
    animation: slide-up 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slide-up {
    from { transform: translateY(100px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    outline: none;
}

.control-btn:hover {
    transform: scale(1.1);
}

.btn-mute {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.btn-mute.muted {
    background: #F5CE4D;
    color: #020617;
    box-shadow: 0 0 30px rgba(245, 206, 77, 0.4);
}

.btn-end {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    background: #ef4444;
    color: white;
    box-shadow: 0 0 50px rgba(239, 68, 68, 0.4);
}

.btn-end:hover {
    background: #f87171;
    box-shadow: 0 0 60px rgba(239, 68, 68, 0.6);
    transform: scale(1.1) rotate(90deg);
}

.encryption-text {
    position: absolute;
    bottom: 2rem;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-transform: uppercase;
    font-weight: 500;
}

.sparkle-icon {
    color: #F5CE4D;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Audio Waveform Simulation */
.waveform-container {
    height: 40px;
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 2rem;
}

.wave-bar {
    width: 4px;
    height: 8px;
    background: #F5CE4D;
    border-radius: 2px;
    transition: height 0.1s ease;
}

.wave-bar.speaking {
    animation: wave-bounce 0.5s infinite alternate ease-in-out;
}

@keyframes wave-bounce {
    from { height: 8px; }
    to { height: 40px; }
}