:root {
    --primary-bg: #00a884;
    --secondary-bg: #008069;
    --dark-bg: #111b21;
    --panel-bg: #202c33;
    --app-bg: #0b141a;
    --chat-bg: #0b141a;
    --chat-bg-pattern: #06090c;
    --message-sent-bg: #005c4b;
    --message-received-bg: #202c33;
    --text-primary: #e9edef;
    --text-secondary: #8696a0;
    --white: #ffffff;
    --border-color: #222d34;
    --panel-header-bg: #202c33;
    --hover-bg: #2a3942;
    --input-bg: #2a3942;
    --icon-color: #aebac1;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--dark-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: var(--text-primary);
}

#app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    max-width: 1600px;
    background-color: var(--dark-bg);
    overflow: hidden;
}

#sidebar {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30%;
    min-width: 300px;
    max-width: 450px;
    border-right: 1px solid var(--border-color);
    background-color: var(--dark-bg);
}

#sidebar-footer {
    padding: 5px 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

#sidebar-footer button {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--icon-color);
    width: 40px;
    height: 40px;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

#sidebar-footer button:hover {
    background-color: var(--hover-bg);
}

#main-content {
    display: flex;
    flex-direction: column;
    width: 70%;
    background-color: var(--chat-bg);
    position: relative;
}

/* WhatsApp-style chat background pattern */
#main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.06;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.header {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    background-color: var(--panel-bg);
    height: 59px;
    flex-shrink: 0;
}

.profile-pic {
    width: 100%;
    height: 100%;
}

.profile-pic-container {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    padding: 5px;
    flex-shrink: 0;
}

.logo-large-container {
    width: 250px;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-large-container .profile-pic {
    width: 100%;
    height: 100%;
}

.header-icons {
    margin-left: auto;
    display: flex;
    gap: 10px;
}

.header-icons button {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--icon-color);
    width: 40px;
    height: 40px;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-icons button:hover {
    background-color: var(--hover-bg);
}

.header-icons button svg {
    display: block;
}

.search-bar {
    padding: 8px 12px;
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
}

.search-bar input {
    width: 100%;
    padding: 8px 32px 8px 12px;
    border: none;
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.search-bar input::placeholder {
    color: var(--text-secondary);
}

#contact-list {
    flex-grow: 1;
    overflow-y: auto;
    background-color: var(--dark-bg);
}

/* Custom scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.16);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.24);
}

.contact {
    display: flex;
    align-items: center;
    padding: 12px;
    cursor: pointer;
    transition: background-color 0.15s;
    position: relative;
}

.contact:hover {
    background-color: var(--hover-bg);
}

.contact.active {
    background-color: var(--hover-bg);
}

.contact-details {
    flex-grow: 1;
    margin-left: 15px;
    overflow: hidden; /* Prevents long names from pushing time away */
}

.contact-name-and-time {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.contact-name {
    font-weight: 400;
    color: var(--text-primary);
    font-size: 16px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.last-message-time {
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
    margin-left: 6px;
}

.unknown-badge {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--primary-bg);
    color: var(--white);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}

#chat-header {
    flex-shrink: 0;
}

#chat-header .profile-pic-container {
    margin-right: 15px;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 400;
    font-size: 16px;
    color: var(--text-primary);
}

.chat-status {
    font-size: 13px;
    color: var(--text-secondary);
}

#chat-window {
    flex-grow: 1;
    padding: 20px 20px 8px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}


.no-chat-selected {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
}

.welcome-screen {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
    overflow-y: auto;
}

.welcome-screen h1 {
    color: var(--text-primary);
    font-size: 32px;
    font-weight: 300;
    margin-bottom: 10px;
}

.welcome-screen .tagline {
    font-size: 16px;
    max-width: 500px;
    margin-bottom: 40px;
}

.features {
    display: flex;
    gap: 30px;
    justify-content: center;
    max-width: 900px;
    margin-bottom: 40px;
}

.feature {
    flex: 1;
    max-width: 280px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 15px;
    color: var(--primary-bg);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature h3 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 10px;
}

.feature p {
    font-size: 14px;
    line-height: 1.5;
}

.welcome-screen .call-to-action {
    font-size: 16px;
    color: var(--text-primary);
}

.logo-large {
    width: 250px;
    height: 250px;
}

.message {
    display: flex;
    margin-bottom: 2px;
    max-width: 65%;
}

.message-content {
    padding: 6px 7px 8px 9px;
    border-radius: 7.5px;
    position: relative;
    box-shadow: 0 1px 0.5px rgba(0, 0, 0, 0.13);
}

.message-content p {
    margin: 0;
    margin-bottom: 3px;
    font-size: 14.2px;
    line-height: 19px;
    word-wrap: break-word;
}

.message-info {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    margin-top: 2px;
}

.message-content .timestamp {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
}

.delivery-status {
    display: flex;
    align-items: center;
}

.check-mark {
    font-size: 12px;
    color: #8696a0; /* Grey color for check marks */
    margin-left: 2px;
    letter-spacing: -6px; /* Bring the double checks closer together */
}

.check-mark.single {
    /* Single grey check for delivered to network */
}

.check-mark.double {
    /* Double grey check for delivered to recipient */
}

.message.sent {
    align-self: flex-end;
}

.message.sent .message-content {
    background-color: var(--message-sent-bg);
    border-top-right-radius: 0;
}

.message.received {
    align-self: flex-start;
}

.message.received .message-content {
    background-color: var(--message-received-bg);
    border-top-left-radius: 0;
}

.message.received .message-content .timestamp {
    color: rgba(233, 237, 239, 0.6);
}

#message-input-container {
    display: flex;
    align-items: center;
    padding: 5px 16px;
    background-color: var(--panel-bg);
    min-height: 62px;
}

#message-input {
    flex-grow: 1;
    padding: 9px 12px 11px;
    border: none;
    border-radius: 21px;
    margin: 5px 10px 5px 5px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    resize: none;
    font-family: inherit;
}

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

#send-btn {
    background-color: transparent;
    color: var(--icon-color);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s;
}

#send-btn:not(:disabled):hover {
    color: var(--text-primary);
}

#send-btn:disabled {
    color: var(--border-color);
    cursor: not-allowed;
}

#send-btn svg {
    display: block;
}

/* Modal Styles */
.modal-container {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--panel-bg);
    padding: 24px;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 4px 60px rgba(0,0,0,0.5);
    position: relative;
}

.close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 24px;
    cursor: pointer;
    color: var(--icon-color);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.close-btn:hover {
    background-color: var(--hover-bg);
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 400;
    color: var(--text-primary);
}

.modal-content h3 {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-content p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.modal-content label {
    font-size: 14px;
    color: var(--text-secondary);
}

.disclaimer-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.disclaimer-checkbox input[type="checkbox"] {
    margin-bottom: 0;
    width: auto;
}

.modal-content textarea {
    width: 100%;
    min-height: 100px;
    background-color: var(--input-bg);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    resize: vertical;
    font-family: monospace;
    font-size: 13px;
    outline: none;
}

.modal-content input, .modal-content textarea {
    margin-bottom: 16px;
    padding: 12px;
}

.modal-content input {
    width: 100%;
    background-color: var(--input-bg);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}

.modal-content button {
    padding: 10px 24px;
    border: none;
    background-color: var(--primary-bg);
    color: white;
    cursor: pointer;
    border-radius: 8px;
    font-size: 14px;
    transition: background-color 0.15s;
}

.modal-content button:hover {
    background-color: var(--secondary-bg);
}

.setting-item {
    margin-bottom: 2rem;
}

.setting-item:last-child {
    margin-bottom: 0;
}

#add-contact-form {
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h2 {
    margin: 0;
}

.metrics-chart-container {
    width: 100%;
    height: 400px;
}