:root {
    --bg: #090f1d;
    --panel: #1A2925;
    --panel-raised: #21332D;
    --line: #2A3D36;
    --text: #ECE6D8;
    --text-dim: #8FA39A;
    --teal: #6FA98A;
    --gold: #D4B94E;
    --danger: #9C3B4A;
    --green: #4CAF7D;
    --font: 'Inter', sans-serif;
}

body.light, html.light-mode, body.light-mode, :root.light-mode {
    --bg-gradient: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
    --bg: #f0f4f8;
    --panel: rgba(255, 255, 255, 0.85);
    --panel-raised: rgba(255, 255, 255, 1);
    --line: rgba(0, 0, 0, 0.08); /* Crisp visible border */
    --line-glow: rgba(255,255,255,0.7);
    --text: #2d3748;
    --text-dim: #718096;
    --teal: #667eea;
    --teal-glow: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gold: #ed8936;
    --glass-blur: blur(16px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    transition: background 0.3s, color 0.3s;
    overflow: hidden;
}

/* Header */
.rc-header {
    flex-shrink: 0;
    z-index: 100;
}

/* ---- Header ---- */
.rc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 10;
}

.rc-back {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.rc-back:hover {
    color: var(--text);
}

.rc-back svg {
    width: 18px;
    height: 18px;
}

.rc-back img {
    height: 24px;
    width: auto;
    object-fit: contain;
    display: block;
    background: transparent;
    mix-blend-mode: lighten;
}

.light .rc-back img,
html.light-mode .rc-back img {
    mix-blend-mode: normal;
}

.rc-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
}

.rc-logo-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.rc-theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-dim);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.rc-theme-btn:hover {
    background: var(--panel-raised);
    color: var(--text);
}

.rc-theme-btn svg {
    width: 18px;
    height: 18px;
}

/* ---- Main / Screens ---- */
.rc-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: calc(100% - 66px);
    width: 100%;
    position: relative;
}

.rc-screen {
    display: none;
    width: 100%;
    height: 100%;
}

.rc-screen.active {
    display: flex;
    flex-direction: column;
}

/* Idle Screen with self-contained scrolling to its footer */
#rc-idle.active {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
}

.rc-idle-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 480px;
    margin: auto auto;
    padding: 40px 20px 20px;
    text-align: center;
    gap: 18px;
    flex-shrink: 0;
    min-height: min-content;
}

/* Footer inside idle screen */
#rc-global-footer {
    flex-shrink: 0;
    margin-top: 40px;
    width: 100%;
}

.rc-pulse-ring {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid var(--teal);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    animation: ring-pulse 2.5s ease-in-out infinite;
}

.rc-pulse-ring::before,
.rc-pulse-ring::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 1.5px solid var(--teal);
    opacity: 0;
    animation: ring-expand 2.5s ease-out infinite;
}

.rc-pulse-ring::before {
    width: 130%;
    height: 130%;
    animation-delay: 0.4s;
}

.rc-pulse-ring::after {
    width: 165%;
    height: 165%;
    animation-delay: 0.8s;
}

@keyframes ring-expand {
    0% {
        transform: scale(0.7);
        opacity: 0.6;
    }

    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.rc-pulse-dot {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--teal), var(--gold));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.rc-idle-content h1 {
    font-size: clamp(22px, 5vw, 32px);
    font-weight: 700;
    color: var(--text);
}

.rc-sub {
    font-size: 14px;
    color: var(--text-dim);
    max-width: 380px;
    line-height: 1.6;
}

.rc-tags-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 380px;
    text-align: left;
}

.rc-tags-wrap label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dim);
}

.rc-tags-wrap label span {
    font-weight: 400;
    opacity: 0.7;
}

.rc-tags-wrap input {
    width: 100%;
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text);
    font-family: var(--font);
    transition: border-color 0.2s;
}

.rc-tags-wrap input:focus {
    outline: none;
    border-color: var(--teal);
}

.rc-tags-wrap input::placeholder {
    color: var(--text-dim);
}

.rc-btn-primary {
    background: linear-gradient(135deg, var(--teal), #4a8f75);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 15px 48px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition: transform 0.15s, filter 0.15s, box-shadow 0.15s;
    box-shadow: 0 4px 20px rgba(111, 169, 138, 0.35);
}

.rc-btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
    box-shadow: 0 8px 28px rgba(111, 169, 138, 0.5);
}

.rc-btn-primary:active {
    transform: translateY(0);
}

.rc-auto-connect-wrap {
    margin-top: -4px;
}

.rc-ac-label {
    font-size: 13px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.rc-ac-label input {
    cursor: pointer;
}

.rc-notice {
    font-size: 12px;
    color: var(--text-dim);
}

.rc-notice a {
    color: var(--teal);
    text-decoration: none;
}

/* ---- Searching Screen ---- */
.rc-search-anim {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    gap: 32px;
    padding: 40px 20px;
}

.rc-radar {
    width: 140px;
    height: 140px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rc-radar-ring {
    position: absolute;
    border-radius: 50%;
    border: 1.5px solid var(--teal);
    opacity: 0;
    animation: radar-ring 3s ease-out infinite;
}

.r1 {
    width: 60px;
    height: 60px;
    animation-delay: 0s;
}

.r2 {
    width: 100px;
    height: 100px;
    animation-delay: 0.8s;
}

.r3 {
    width: 140px;
    height: 140px;
    animation-delay: 1.6s;
}

@keyframes radar-ring {
    0% {
        opacity: 0.8;
        transform: scale(0.3);
    }

    100% {
        opacity: 0;
        transform: scale(1);
    }
}

.rc-radar-beam {
    position: absolute;
    width: 50%;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--teal));
    transform-origin: left center;
    left: 50%;
    top: 50%;
    margin-top: -1px;
    border-radius: 2px;
    animation: rotate-beam 2s linear infinite;
}

@keyframes rotate-beam {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.rc-radar-center {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--teal-glow);
    color: #fff;
    box-shadow: 0 0 12px var(--teal);
}

.rc-searching-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dim);
}

.rc-dots span {
    animation: blink 1.4s infinite;
    opacity: 0;
}

.rc-dots span:nth-child(1) {
    animation-delay: 0s;
}

.rc-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.rc-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {

    0%,
    80%,
    100% {
        opacity: 0;
    }

    40% {
        opacity: 1;
    }
}

.rc-btn-ghost {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text-dim);
    border-radius: 10px;
    padding: 11px 32px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: var(--font);
    transition: background 0.2s, color 0.2s;
}

.rc-btn-ghost:hover {
    background: var(--panel-raised);
    color: var(--text);
}

/* ---- Chat Screen ---- */
.rc-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    border-bottom: 1px solid var(--line);
    flex-shrink: 0;
}

.rc-partner-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rc-partner-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--panel-raised);
    border: 2px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-dim);
}

.rc-partner-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.rc-partner-status {
    font-size: 12px;
    color: var(--green);
    display: flex;
    align-items: center;
    gap: 4px;
}

.rc-partner-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    display: inline-block;
}

.rc-chat-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.rc-btn-icon {
    background: transparent;
    border: none;
    color: var(--text-dim);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.rc-btn-icon:hover {
    background: var(--panel-raised);
    color: var(--teal);
}

.rc-btn-skip {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--panel-raised);
    border: 1px solid var(--line);
    color: var(--text-dim);
    border-radius: 8px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font);
    transition: all 0.2s;
}

.rc-btn-skip svg {
    width: 14px;
    height: 14px;
}

.rc-btn-skip:hover {
    border-color: var(--teal);
    color: var(--teal);
}

.rc-btn-stop {
    background: var(--danger);
    border: none;
    color: #fff;
    border-radius: 8px;
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font);
    transition: filter 0.2s;
}

.rc-btn-stop:hover {
    filter: brightness(1.1);
}

.rc-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}

.rc-messages::-webkit-scrollbar {
    width: 4px;
}

.rc-messages::-webkit-scrollbar-track {
    background: transparent;
}

.rc-messages::-webkit-scrollbar-thumb {
    background: var(--line);
    border-radius: 4px;
}

.rc-sys-msg {
    text-align: center;
    font-size: 12px;
    color: var(--text-dim);
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 6px 18px;
    align-self: center;
    max-width: 80%;
}

.rc-icebreaker {
    text-align: center;
    font-size: 13px;
    color: #fff;
    background: linear-gradient(135deg, var(--teal), var(--gold));
    box-shadow: 0 4px 12px rgba(111, 169, 138, 0.2);
    border-radius: 20px;
    padding: 6px 18px;
    align-self: center;
    max-width: 80%;
    margin-top: -4px;
}

.rc-msg {
    display: flex;
    flex-direction: column;
    gap: 3px;
    max-width: 72%;
    animation: msg-in 0.2s ease;
}

@keyframes msg-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rc-msg.mine {
    align-self: flex-end;
    align-items: flex-end;
}

.rc-msg.stranger {
    align-self: flex-start;
    align-items: flex-start;
}

.rc-msg-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.rc-msg.mine .rc-msg-label {
    color: var(--teal);
}

.rc-msg-bubble {
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
}

.rc-msg.mine .rc-msg-bubble {
    background: linear-gradient(135deg, var(--teal), #4a8f75);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.rc-msg.stranger .rc-msg-bubble {
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    border: 1px solid var(--line);
    color: var(--text);
    border-bottom-left-radius: 4px;
}

.rc-typing-dots {
    display: flex;
    gap: 3px;
    padding: 4px 6px;
}

.rc-typing-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-dim);
    animation: rc-bounce 1.4s infinite ease-in-out both;
}

.rc-typing-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.rc-typing-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes rc-bounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}

.rc-msg-time {
    font-size: 10px;
    color: var(--text-dim);
    opacity: 0.7;
}

/* ---- Compose ---- */
.rc-compose {
    display: flex;
    gap: 10px;
    padding: 14px 20px;
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 var(--line-glow), 0 4px 16px rgba(0,0,0,0.05);
    border-top: 1px solid var(--line);
    flex-shrink: 0;
    position: relative;
}

.rc-emoji-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 4px;
    transition: color 0.2s, transform 0.15s;
}

.rc-emoji-btn:hover {
    color: var(--teal);
    transform: scale(1.1);
}

.rc-emoji-btn svg {
    width: 24px;
    height: 24px;
}

.rc-emoji-panel {
    position: absolute;
    bottom: 75px;
    left: 20px;
    background: var(--panel-raised);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 10px;
    display: none;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 100;
}

.rc-emoji-panel.active {
    display: grid;
}

.rc-emoji-item {
    font-size: 22px;
    cursor: pointer;
    padding: 6px;
    text-align: center;
    border-radius: 8px;
    transition: background 0.2s, transform 0.15s;
    user-select: none;
}

.rc-emoji-item:hover {
    background: var(--line);
    transform: scale(1.15);
}

.rc-compose input {
    flex: 1;
    background: var(--panel-raised);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 12px 18px;
    font-size: 14px;
    color: var(--text);
    font-family: var(--font);
    transition: border-color 0.2s;
}

.rc-compose input:focus {
    outline: none;
    border-color: var(--teal);
}

.rc-compose input::placeholder {
    color: var(--text-dim);
}

.rc-send-btn {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--teal), #4a8f75);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.15s, filter 0.15s;
    box-shadow: 0 4px 12px rgba(111, 169, 138, 0.3);
}

.rc-send-btn:hover {
    transform: scale(1.08);
    filter: brightness(1.1);
}

.rc-send-btn svg {
    width: 18px;
    height: 18px;
    color: #fff;
}

/* ---- SEO block (visually hidden, out of flow) ---- */
.rc-seo-block {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0.001;
    font-size: 1px;
    overflow: hidden;
    pointer-events: none;
    left: -9999px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .rc-idle-content {
        padding: 40px 16px;
    }

    .rc-msg,
    .rc-sys-msg {
        max-width: 90%;
    }

    .rc-emoji-panel {
        grid-template-columns: repeat(5, 1fr);
        left: 10px;
        right: auto;
    }
}

@media (max-width: 480px) {
    .rc-idle-content {
        padding: 30px 12px;
        gap: 16px;
    }

    .rc-btn-primary {
        padding: 14px 36px;
        font-size: 15px;
    }

    .rc-messages {
        padding: 14px 12px;
    }

    .rc-compose {
        padding: 10px 12px;
        padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
        gap: 8px;
    }

    .rc-chat-header {
        padding: 12px 14px;
        padding-top: calc(12px + env(safe-area-inset-top, 0px));
    }

    .rc-emoji-panel {
        grid-template-columns: repeat(6, 1fr);
        padding: 8px;
        bottom: calc(70px + env(safe-area-inset-bottom, 0px));
    }
}