/* ===== Reset & Variables ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --green-deep:  #005B2E;
    --green-mid:   #00843D;
    --green-light: #4CAF7D;
    --green-glow:  rgba(0, 132, 61, 0.35);
    --gold:        #C9A84C;
    --bg:          #040E1C;
    --glass:       rgba(255, 255, 255, 0.07);
    --glass-border:rgba(255, 255, 255, 0.12);
    --text:        #FFFFFF;
    --text-dim:    rgba(255, 255, 255, 0.5);
    --danger:      #E53935;
    --danger-glow: rgba(229, 57, 53, 0.4);
    --success:     #4CAF7D;
}

html, body {
    width: 100%; height: 100%;
    overflow: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: 'Manrope', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ===== Screen system ===== */
.screen {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    transition: opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.screen-hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(1.03);
}

/* ===== Background decorations ===== */
.welcome-bg, .calling-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
}

.bg-glow-1 {
    width: 500px; height: 500px;
    bottom: -200px; left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(0,132,61,0.2) 0%, transparent 65%);
}

.bg-glow-2 {
    width: 300px; height: 300px;
    top: 5%; right: 8%;
    background: radial-gradient(circle, rgba(201,168,76,0.1) 0%, transparent 70%);
}

.bg-noise {
    position: absolute;
    inset: 0;
    opacity: 0.35;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
    background-size: 300px;
}

/* ===========================
   SCREEN 1 — WELCOME
   =========================== */

#screen-welcome {
    background: var(--bg);
    align-items: center;
    justify-content: space-between;
}

/* Header */
.welcome-header {
    width: 100%;
    padding: 2rem 2.5rem;
    z-index: 1;
    display: flex;
    justify-content: center;
}

.um6ss-logo-img {
    height: auto;
    width: 610px;
    object-fit: contain;
}

/* Main area */
.welcome-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.2rem;
    z-index: 1;
    padding: 2rem;
}

/* CTA wrapper — les anneaux émanent du bouton */
.cta-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3.5rem;
}

.orb-ring {
    position: absolute;
    border-radius: 100px;
    border: 1px solid var(--green-mid);
    pointer-events: none;
    animation: orbBreath 5s ease-in-out infinite;
}

/* Les anneaux épousent la forme pill du bouton */
.orb-ring-1 { width: calc(100% - 4rem);  height: calc(100% - 4rem);  opacity: 0.5;  animation-delay: 0s; }
.orb-ring-2 { width: calc(100% - 1.5rem); height: calc(100% - 1.5rem); opacity: 0.25; animation-delay: 1s; }
.orb-ring-3 { width: 100%;                height: 100%;                opacity: 0.1;  animation-delay: 2s; }

@keyframes orbBreath {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.04); filter: drop-shadow(0 0 10px var(--green-glow)); }
}

/* Welcome text */
.welcome-copy { text-align: center; }

.welcome-title {
    font-family: 'Poppins', ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: clamp(2.4rem, 6vw, 3.6rem);
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1.15;
    color: var(--text);
    margin-bottom: 0.8rem;
}

.welcome-sub {
    font-family: 'Poppins', ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 1.3rem;
    color: var(--text-dim);
    max-width: 660px;
    line-height: 1.7;
    font-weight: 400;
    margin: 0 auto;
}

/* CTA button */
.cta-btn {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 1.05rem 2.6rem;
    background: linear-gradient(135deg, var(--green-deep) 0%, var(--green-mid) 100%);
    border: 1px solid rgba(76, 175, 125, 0.45);
    border-radius: 100px;
    color: #fff;
    font-family: 'Manrope', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 6px 32px rgba(0, 132, 61, 0.38);
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.cta-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 60%);
    pointer-events: none;
}

.cta-btn:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 12px 48px rgba(0, 132, 61, 0.55), 0 0 0 6px rgba(0, 132, 61, 0.1);
}

.cta-btn:active { transform: translateY(0) scale(0.97); }

.cta-phone {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cta-phone svg { width: 19px; height: 19px; }

.welcome-tagline {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.3);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 600;
}

.welcome-footer {
    padding: 1.5rem;
    font-size: 0.68rem;
    color: rgba(255,255,255,0.2);
    letter-spacing: 0.08em;
    z-index: 1;
}

/* ===========================
   SCREEN 2 — CALLING
   =========================== */

#screen-calling {
    background: var(--bg);
    align-items: center;
    justify-content: center;
}

.calling-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.8rem;
    z-index: 1;
}

.calling-avatar {
    position: relative;
    width: 148px; height: 148px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.call-ring {
    position: absolute;
    border-radius: 50%;
    border: 1.5px solid var(--green-mid);
    animation: ringExpand 2.5s cubic-bezier(0.2, 0, 0.8, 1) infinite;
}

.call-ring-1 { width: 100%; height: 100%; animation-delay: 0s; }
.call-ring-2 { width: 145%; height: 145%; animation-delay: 0.75s; }
.call-ring-3 { width: 195%; height: 195%; animation-delay: 1.5s; }

@keyframes ringExpand {
    0%   { transform: scale(0.85); opacity: 0.9; }
    100% { transform: scale(1.35); opacity: 0;   }
}

.calling-core {
    width: 74%; height: 74%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--green-deep) 0%, var(--green-mid) 100%);
    border: 1.5px solid rgba(76, 175, 125, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 36px var(--green-glow);
    z-index: 1;
    color: #fff;
}

.calling-info { text-align: center; }

.calling-title {
    font-family: 'Cormorant', serif;
    font-size: 2.1rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    margin-bottom: 0.55rem;
}

.calling-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    font-size: 0.88rem;
    color: var(--text-dim);
    font-weight: 500;
    margin-bottom: 1.1rem;
}

.dot-anim span {
    animation: dotBlink 1.5s infinite;
    font-size: 1.3rem;
    line-height: 0;
    vertical-align: middle;
}
.dot-anim span:nth-child(2) { animation-delay: 0.25s; }
.dot-anim span:nth-child(3) { animation-delay: 0.5s; }

@keyframes dotBlink {
    0%, 80%, 100% { opacity: 0.15; }
    40%            { opacity: 1;    }
}

.calling-msg {
    font-size: 0.76rem;
    color: rgba(255,255,255,0.28);
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* ===========================
   SCREEN 3 — CALL ACTIVE
   =========================== */

#screen-call { background: #000; }

#avatar-video {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}

/* Top bar */
.call-topbar {
    position: absolute;
    top: 0; left: 0; right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.4rem 1.75rem;
    background: linear-gradient(to bottom, rgba(0,0,0,0.72) 0%, transparent 100%);
    z-index: 10;
}

.call-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.28rem 0.75rem;
    background: rgba(0,0,0,0.45);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text);
}

.status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #666;
    transition: background 0.3s;
    flex-shrink: 0;
}

.status-badge.connected .status-dot    { background: var(--success); animation: dotPulse 2s infinite; }
.status-badge.connecting .status-dot   { background: #ffa502; animation: dotPulse 0.8s infinite; }
.status-badge.error .status-dot        { background: var(--danger); }

@keyframes dotPulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.35; }
}

.call-brand-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    text-shadow: 0 1px 6px rgba(0,0,0,0.6);
    letter-spacing: 0.02em;
}

.call-timer {
    font-size: 0.85rem;
    font-weight: 700;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.1em;
    padding: 0.28rem 0.8rem;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-variant-numeric: tabular-nums;
}

/* Speaking indicator */
.speaking-indicator {
    display: none;
    position: absolute;
    top: 5.5rem;
    left: 50%;
    transform: translateX(-50%);
    align-items: center;
    gap: 0.65rem;
    z-index: 10;
    padding: 0.4rem 1.1rem;
    background: rgba(0, 100, 50, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(76, 175, 125, 0.4);
    border-radius: 100px;
    white-space: nowrap;
}

.speaking-indicator.visible { display: flex; }

.speaking-label {
    font-size: 0.7rem;
    color: var(--green-light);
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.speaking-bars {
    display: flex;
    align-items: center;
    gap: 3px;
}

.speaking-bar {
    width: 3px;
    border-radius: 2px;
    background: var(--green-light);
    animation: speakAnim 0.75s ease-in-out infinite alternate;
}

.speaking-bar:nth-child(1) { height: 7px;  animation-delay: 0.00s; }
.speaking-bar:nth-child(2) { height: 16px; animation-delay: 0.12s; }
.speaking-bar:nth-child(3) { height: 22px; animation-delay: 0.24s; }
.speaking-bar:nth-child(4) { height: 16px; animation-delay: 0.36s; }
.speaking-bar:nth-child(5) { height: 7px;  animation-delay: 0.48s; }

@keyframes speakAnim {
    from { transform: scaleY(0.3); opacity: 0.45; }
    to   { transform: scaleY(1);   opacity: 1;    }
}

/* Subtitle overlay */
.subtitle-overlay {
    position: absolute;
    bottom: 170px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    max-width: 68%;
    text-align: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.subtitle-overlay.visible { opacity: 1; }

.subtitle-text {
    display: inline-block;
    padding: 0.65rem 1.6rem;
    background: rgba(0, 0, 0, 0.68);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 500;
    color: #fff;
    line-height: 1.55;
    text-shadow: 0 1px 6px rgba(0,0,0,0.8);
    border: 1px solid rgba(255,255,255,0.1);
    letter-spacing: 0.01em;
}

/* Bottom controls */
.call-controls {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 1.25rem 1.5rem 2.2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.88) 0%, rgba(0,0,0,0.5) 65%, transparent 100%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ctrl-input-row {
    display: flex;
    gap: 0.6rem;
    align-items: center;
}

#text-input {
    flex: 1;
    padding: 0.75rem 1.3rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    color: var(--text);
    font-family: 'Manrope', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    outline: none;
    transition: border-color 0.2s;
}

#text-input:focus { border-color: var(--green-light); }
#text-input::placeholder { color: rgba(255,255,255,0.28); }
#text-input:disabled { opacity: 0.3; cursor: not-allowed; }

.ctrl-send {
    width: 46px; height: 46px;
    border-radius: 50%;
    border: none;
    background: var(--green-mid);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
    box-shadow: 0 4px 16px rgba(0,132,61,0.35);
}

.ctrl-send svg { width: 18px; height: 18px; }
.ctrl-send:not(:disabled):hover { background: var(--green-light); transform: scale(1.08); }
.ctrl-send:disabled { opacity: 0.3; cursor: not-allowed; }

.ctrl-btns {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.6rem;
}

.ctrl-round {
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
}

.ctrl-round svg { width: 22px; height: 22px; }
.ctrl-round:not(:disabled):hover  { transform: scale(1.12); }
.ctrl-round:not(:disabled):active { transform: scale(0.93); }
.ctrl-round:disabled { opacity: 0.3; cursor: not-allowed; }

/* Mic button */
.ctrl-mic {
    width: 58px; height: 58px;
    background: var(--green-mid);
    color: #fff;
    box-shadow: 0 4px 22px rgba(0,132,61,0.45);
}

.ctrl-mic.muted {
    background: rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.6);
    box-shadow: none;
    border: 1px solid var(--glass-border);
}

/* Interrupt button */
.ctrl-pause {
    width: 50px; height: 50px;
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
    border: 1px solid var(--glass-border) !important;
}

/* End call button */
.ctrl-end {
    width: 68px; height: 68px;
    background: var(--danger);
    color: #fff;
    box-shadow: 0 6px 28px var(--danger-glow);
}

.ctrl-end:not(:disabled):hover {
    background: #ef5350;
    box-shadow: 0 8px 36px rgba(229, 57, 53, 0.6);
}

/* ===== Toast ===== */
#error-toast {
    display: none;
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--danger);
    color: #fff;
    padding: 0.75rem 1.6rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 999;
    max-width: 90vw;
    text-align: center;
    white-space: nowrap;
    font-family: 'Manrope', sans-serif;
    box-shadow: 0 4px 24px var(--danger-glow);
    animation: toastIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#error-toast.visible { display: block; }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(12px) scale(0.95); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .welcome-header   { padding: 1.5rem; }
    .welcome-main     { gap: 1.8rem; }
    .welcome-title    { font-size: 2.2rem; }
    .cta-btn          { padding: 0.95rem 2rem; font-size: 0.92rem; }
    .call-controls    { padding: 1rem 1rem 1.8rem; }
    .subtitle-overlay { bottom: 145px; max-width: 88%; }
    .subtitle-text    { font-size: 0.88rem; }
    .ctrl-btns        { gap: 1.2rem; }
}