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

:root {
    --primary-color: #0e78f9;
    --primary-hover: #0c6ae4;
    --danger-color: #f93e3e;
    --danger-hover: #e43434;
    --success-color: #31c48d;
    --dark-bg: #1a1d21;
    --darker-bg: #101214;
    --light-bg: #2d3136;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border-color: #3a3f45;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

/* Home Page Styles */
.home-page {
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 480px;
}

.main-card {
    background: var(--light-bg);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.logo-container {
    text-align: center;
    margin-bottom: 40px;
}

.logo-container h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
}

.action-section {
    margin-bottom: 30px;
}

.section-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    font-weight: 600;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
    font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 120, 249, 0.1);
}

.input-group input::placeholder {
    color: #666;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(14, 120, 249, 0.1);
}

.btn-icon {
    font-size: 1.2rem;
}

.divider {
    display: flex;
    align-items: center;
    margin: 30px 0;
    color: var(--text-secondary);
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    padding: 0 20px;
    font-size: 0.9rem;
}

.create-section {
    text-align: center;
}

.hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 10px;
}

.features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.feature-icon {
    font-size: 1.2rem;
}

.footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.error-message {
    background: rgba(249, 62, 62, 0.1);
    color: var(--danger-color);
    padding: 12px 16px;
    border-radius: 8px;
    margin-top: 20px;
    display: none;
    font-size: 0.9rem;
    border: 1px solid rgba(249, 62, 62, 0.3);
}

/* Room Page Styles */
.room-page {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
    min-height: 60px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.room-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.room-code {
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

.btn-copy {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-copy:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

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

.participants-count {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--dark-bg);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.btn-invite {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-invite:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-invite svg {
    stroke: currentColor;
}

.room-container {
    flex: 1;
    display: flex;
    position: relative;
    overflow: hidden;
}

.videos-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    padding: 24px;
    overflow-y: auto;
    align-content: start;
}

.video-tile {
    position: relative;
    background: var(--darker-bg);
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16/9;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.video-tile:hover {
    border-color: var(--border-color);
    transform: translateY(-2px);
}

.local-video {
    border-color: var(--primary-color);
}

.video-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--darker-bg);
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.user-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: white;
}

.media-status {
    display: flex;
    gap: 8px;
}

.mic-status,
.cam-status {
    font-size: 0.9rem;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 4px;
}

/* Sidebars */
.participants-sidebar,
.chat-sidebar {
    width: 320px;
    background: var(--light-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    position: absolute;
    right: 0;
    top: 0;
    bottom: 80px;
    z-index: 100;
}

.participants-sidebar.active,
.chat-sidebar.active {
    transform: translateX(0);
}

.sidebar-header,
.chat-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h3,
.chat-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-close-sidebar,
.btn-close-chat {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.btn-close-sidebar:hover,
.btn-close-chat:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.participants-list {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.participant-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    background: var(--dark-bg);
    transition: all 0.2s ease;
}

.participant-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.participant-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
}

.participant-info {
    flex: 1;
}

.participant-name {
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.participant-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Chat Styles */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}

.chat-message.system {
    align-self: center;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    width: 100%;
}

.chat-message.user {
    align-self: flex-start;
}

.chat-message.own {
    align-self: flex-end;
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
    font-size: 0.85rem;
}

.message-sender {
    font-weight: 600;
    color: var(--text-primary);
}

.message-time {
    color: var(--text-secondary);
}

.message-content {
    padding: 12px 16px;
    background: var(--dark-bg);
    border-radius: 12px;
    font-size: 0.95rem;
    line-height: 1.4;
}

.chat-message.own .message-content {
    background: var(--primary-color);
    color: white;
}

.chat-input-container {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.chat-input-container input {
    flex: 1;
    padding: 12px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.chat-input-container input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-send {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.btn-send:hover {
    background: var(--primary-hover);
    transform: scale(1.05);
}

.btn-send svg {
    stroke: currentColor;
}

/* Controls */
.controls-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: var(--light-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    z-index: 1000;
}

.controls-center {
    display: flex;
    gap: 16px;
}

.btn-control {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--dark-bg);
    border: none;
    border-radius: 24px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-control:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.btn-control.active {
    background: var(--primary-color);
    color: white;
}

.btn-control.muted {
    background: var(--danger-color);
    color: white;
}

.btn-leave {
    background: var(--danger-color);
    color: white;
}

.btn-leave:hover {
    background: var(--danger-hover);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--light-bg);
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.invite-code {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--dark-bg);
    padding: 16px;
    border-radius: 12px;
    margin: 16px 0;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    font-family: 'Courier New', monospace;
}

.invite-link {
    display: flex;
    gap: 12px;
    margin: 16px 0;
}

.invite-link input {
    flex: 1;
    padding: 14px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.btn-copy-small {
    background: var(--primary-color);
    border: none;
    border-radius: 8px;
    color: white;
    cursor: pointer;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .videos-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .videos-grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }
    
    .video-tile {
        max-width: 100%;
    }
    
    .participants-sidebar,
    .chat-sidebar {
        width: 100%;
    }
    
    .controls-center {
        gap: 8px;
    }
    
    .btn-control {
        padding: 12px 16px;
    }
    
    .btn-text {
        display: none;
    }
    
    .room-header {
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
    }
    
    .header-left,
    .header-right {
        width: 100%;
        justify-content: space-between;
    }
}