/* === CSS Variables === */
:root {
    /* Light Theme */
    --primary: #6c5ce7;
    --secondary: #a29bfe;
    --accent: #fd79a8;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: rgba(255, 255, 255, 0.2);
    --card-border: 1px solid rgba(255, 255, 255, 0.3);
    --input-bg: rgba(255, 255, 255, 0.8);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --message-user: #6c5ce7;
    --message-peer: #ffffff;
    --message-system: rgba(255, 255, 255, 0.2);
    --vh: 1vh; /* Dynamic viewport unit */
}

.dark-mode {
    /* Dark Theme */
    --primary: #a29bfe;
    --secondary: #6c5ce7;
    --accent: #ff7675;
    --text-primary: #f5f6fa;
    --text-secondary: #dfe6e9;
    --bg-gradient: linear-gradient(135deg, #2c3e50 0%, #4ca1af 100%);
    --card-bg: rgba(0, 0, 0, 0.3);
    --card-border: 1px solid rgba(255, 255, 255, 0.1);
    --input-bg: rgba(0, 0, 0, 0.3);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --message-user: #a29bfe;
    --message-peer: #34495e;
    --message-system: rgba(0, 0, 0, 0.3);
}

/* === Base Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background 0.5s ease, color 0.3s ease, transform 0.2s ease;
}

html, body {
    overflow-x: hidden;
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    min-height: calc(var(--vh, 1vh) * 100);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    color: var(--text-primary);
    line-height: 1.6;
}

/* === Container === */
.container {
    width: 100%;
    max-width: 1000px;
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
    max-height: -webkit-fill-available;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: var(--card-border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* === Header === */
.header {
    padding: 15px 25px;
    background: rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--card-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.logo-icon {
    font-size: 1.8rem;
    color: var(--accent);
}

.header-controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

.theme-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(30deg);
}

/* === Connection Status === */
.connection-status {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.8rem;
    display: flex;
    gap: 10px;
}

/* === Content Area === */
.content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* === Sidebar === */
.sidebar {
    width: 250px;
    padding: 20px;
    border-right: var(--card-border);
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow-y: auto;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.user-info {
    flex: 1;
}

.username {
    font-weight: 600;
    color: white;
}

.user-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.your-peer-id {
    margin-top: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.your-peer-id h3 {
    color: white;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.peer-id-display {
    padding: 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    word-break: break-all;
    font-size: 0.8rem;
    margin-bottom: 10px;
    color: white;
}

.copy-btn {
    width: 100%;
    padding: 8px;
    border-radius: 20px;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 0.8rem;
}

.copy-btn:hover {
    background: var(--secondary);
}

.connect-form {
    margin-top: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.connect-form h3 {
    color: white;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

#peer-id-input {
    width: 100%;
    padding: 10px 15px;
    border-radius: 20px;
    border: none;
    background: var(--input-bg);
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.connect-btn {
    width: 100%;
    padding: 10px;
    border-radius: 20px;
    border: none;
    background: var(--accent);
    color: white;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.connect-btn:hover {
    background: #e84393;
}

.user-list {
    margin-top: 15px;
    flex: 1;
    overflow-y: auto;
}

.user-list h3 {
    color: white;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.users {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.05);
}

.user-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.user-item-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.9rem;
}

.user-item-name {
    flex: 1;
    font-size: 0.9rem;
    color: white;
}

.user-item-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #00b894;
}

/* === Chat Area === */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.video-container {
    display: none;
    padding: 15px;
    gap: 15px;
    background: rgba(0, 0, 0, 0.1);
    border-bottom: var(--card-border);
}

.video-container.active {
    display: flex;
}

.video-box {
    flex: 1;
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    background: #000;
}

.video-box video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-label {
    position: absolute;
    bottom: 8px;
    left: 8px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    z-index: 2;
}

.chat-box {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding-bottom: 80px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    position: relative;
    animation: floatIn 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    word-break: break-word;
}

@keyframes floatIn {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.message.user {
    align-self: flex-end;
    background: var(--message-user);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.peer {
    align-self: flex-start;
    background: var(--message-peer);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

.message.system {
    align-self: center;
    background: var(--message-system);
    color: white;
    font-size: 0.85rem;
    padding: 8px 16px;
    border-radius: 50px;
    text-align: center;
    max-width: 90%;
}

.message .sender {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 0.8rem;
    display: block;
}

.message .timestamp {
    font-size: 0.7rem;
    opacity: 0.8;
    text-align: right;
    margin-top: 4px;
    display: block;
}

/* === Media Controls === */
.media-controls {
    position: fixed;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 15px;
    border-radius: 50px;
    z-index: 100;
}

.media-controls button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--accent);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.media-controls button:hover:not(:disabled) {
    transform: scale(1.1);
}

#video-quality {
    padding: 5px;
    border-radius: 5px;
    border: none;
    background: var(--input-bg);
    color: var(--text-primary);
}

/* === Message Controls === */
.controls {
    position: sticky;
    bottom: 0;
    background: var(--card-bg);
    border-top: var(--card-border);
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 90;
}

.message-controls {
    display: flex;
    gap: 10px;
}

#message-input {
    flex: 1;
    padding: 12px 20px;
    border-radius: 50px;
    border: none;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

#message-input::placeholder {
    color: var(--text-secondary);
}

.action-btn {
    padding: 12px;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    font-size: 1.2rem;
}

.action-btn:hover:not(:disabled) {
    background: var(--secondary);
    transform: translateY(-2px);
}

.action-btn:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

.video-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.video-btn {
    padding: 10px 20px;
    border-radius: 50px;
    border: none;
    background: var(--accent);
    color: white;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.video-btn:hover:not(:disabled) {
    transform: translateY(-2px);
}

.video-btn:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

#end-video {
    background: #d63031;
}

#end-video:hover:not(:disabled) {
    background: #ff7675;
}

/* === Login Screen === */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-gradient);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    gap: 30px;
}

.auth-container {
    max-width: 400px;
    width: 90%;
    margin: 0 auto;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(5px);
    box-shadow: var(--shadow);
    border: var(--card-border);
}

.auth-tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.auth-tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    color: white;
    font-weight: 500;
}

.auth-tab.active {
    border-bottom: 2px solid var(--accent);
    font-weight: bold;
}

.login-input {
    width: 100%;
    padding: 15px 20px;
    border-radius: 50px;
    border: none;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 20px;
    outline: none;
    text-align: center;
}

.login-btn {
    width: 100%;
    padding: 15px;
    border-radius: 50px;
    border: none;
    background: var(--accent);
    color: white;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background: #e84393;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* === Call Request === */
.call-request {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 15px;
    z-index: 1000;
    text-align: center;
    color: white;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
    display: none;
    width: 90%;
    max-width: 400px;
}

.call-request h3 {
    margin-bottom: 20px;
}

.call-request .video-controls {
    justify-content: center;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: var(--card-border);
        padding: 15px;
        height: auto;
        max-height: 200px;
    }
    
    .video-container {
        flex-direction: column;
    }
    
    .video-box {
        width: 100% !important;
        height: 200px;
    }
    
    .media-controls {
        bottom: 150px;
    }
    
    .connection-status {
        top: 60px;
        right: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        border-radius: 0;
        height: 100vh;
    }
    
    .header {
        padding: 10px 15px;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .auth-container {
        padding: 20px;
    }
    
    .controls {
        padding: 10px;
    }
    
    .action-btn {
        width: 45px;
        height: 45px;
    }
    
    input, textarea {
        font-size: 16px;
    }
    
    .message {
        max-width: 90%;
        padding: 10px 14px;
    }
}

/* === Animations === */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(253, 121, 168, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(253, 121, 168, 0); }
    100% { box-shadow: 0 0 0 0 rgba(253, 121, 168, 0); }
}

.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.glow {
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

/* === Mobile Specific === */
.mobile .message {
    padding: 8px 12px;
}

.mobile .video-btn {
    padding: 8px 15px;
    font-size: 0.8rem;
    }
/* Tawk.to Widget Styles */
#tawkto-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 9999;
}

#tawkto-button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: #4CAF50;
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
}

#tawkto-button:hover {
  background: #3e8e41;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

#tawkto-button svg {
  width: 20px;
  height: 20px;
}