:root {
    --bg-color: #0c1317;
    --sidebar-bg: #111b21;
    --header-bg: #202c33;
    --active-chat: #2a3942;
    --text-primary: #e9edef;
    --text-secondary: #8696a0;
    --whatsapp-green: #00a884;
    --msg-incoming: #202c33;
    --msg-outgoing: #005c4b;
    --primary-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --heading-font: 'Outfit', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--primary-font);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
}

/* Custom Scrollbar for all overflow elements */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(134, 150, 160, 0.2);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(134, 150, 160, 0.4);
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Landing Page */
#landing-page {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    background: #0b141a;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
    z-index: 10;
}

/* Top Navigation */
.top-nav {
    width: 100%;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    position: fixed;
    top: 0;
    left: 0;
    background: rgba(11, 20, 26, 0.7);
    backdrop-filter: blur(15px);
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-logo {
    font-family: var(--heading-font);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-login-btn {
    background: transparent;
    border: 2px solid var(--whatsapp-green);
    color: var(--whatsapp-green);
    font-family: var(--heading-font);
    font-size: 1rem;
    font-weight: 600;
    padding: 8px 24px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-login-btn.user-name-display {
    border-color: rgba(0, 168, 132, 0.3);
    background: rgba(0, 168, 132, 0.05);
    padding: 8px 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: 20px;
}

.nav-login-btn.user-name-display::after {
    content: '\f0d7';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.8em;
}

.nav-user-container {
    position: relative;
    display: inline-block;
}

.logout-menu {
    position: absolute;
    top: 110%;
    right: 0;
    background: var(--sidebar-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    min-width: 150px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    display: none;
    z-index: 1001;
    overflow: hidden;
}

.logout-menu button {
    width: 100%;
    padding: 12px 15px;
    background: none;
    border: none;
    color: #ff5c5c;
    text-align: left;
    cursor: pointer;
    font-family: var(--heading-font);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s;
}

.logout-menu button:hover {
    background: rgba(255, 92, 92, 0.1);
}

.nav-login-btn:hover {
    background: var(--whatsapp-green);
    color: var(--bg-color);
}

.landing-hero {
    min-height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.landing-content {
    display: flex;
    max-width: 1200px;
    width: 90%;
    z-index: 2;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.landing-text {
    flex: 1;
    color: var(--text-primary);
    opacity: 0;
    transform: translateY(30px);
}

.landing-title {
    font-size: 4em;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.1;
}

.highlight {
    color: var(--whatsapp-green);
}

.landing-subtitle {
    font-size: 1.25em;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.5;
    max-width: 80%;
}

.landing-btn {
    padding: 16px 32px;
    font-family: var(--heading-font);
    font-size: 1.1em;
    font-weight: 600;
    color: #fff;
    background: var(--whatsapp-green);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 15px rgba(0, 168, 132, 0.3);
}

.landing-btn:hover {
    background: #00bf96;
    transform: translateY(-2px);
    box-shadow: 0 12px 20px rgba(0, 168, 132, 0.4);
}

.landing-animation {
    flex: 1;
    display: flex;
    justify-content: center;
    opacity: 0;
}

#lottie-container {
    width: 500px;
    height: 500px;
}

/* Background Decorations */
.background-decorations {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: var(--whatsapp-green);
    top: -200px;
    right: -100px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: #0a4d40;
    bottom: -100px;
    left: -100px;
}

.floating-shape {
    position: absolute;
    color: var(--whatsapp-green);
    opacity: 0.1;
    font-size: 3rem;
    z-index: 1;
}

.shape-1 { top: 20%; left: 10%; }
.shape-2 { top: 60%; right: 15%; }
.shape-3 { bottom: 10%; left: 20%; }

/* Features Section */
.features-section {
    padding: 80px 20px;
    width: 100%;
    max-width: 1200px;
    z-index: 2;
    text-align: center;
    margin-bottom: 50px;
}

/* Auto-scrolling Marquee */
.marquee-section {
    width: 100%;
    background: var(--whatsapp-green);
    padding: 25px 0; min-height: 80px;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    z-index: 2;
    transform: rotate(-1deg) scale(1.05);
    margin-bottom: 40px;
}

.marquee-container {
    width: 100%;
    overflow: hidden;
    display: flex;
    white-space: nowrap;
}

.marquee-content {
    display: flex;
    flex-shrink: 0;
    animation: scroll-marquee 20s linear infinite;
}

.marquee-content span {
    font-family: var(--heading-font);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--bg-color);
    margin: 0 40px;
    letter-spacing: 2px;
}

@keyframes scroll-marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); } 
}

.features-title {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 50px;
}

.features-container {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.feature-card {
    flex: 1;
    min-width: 300px;
    background: rgba(32, 44, 51, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(40px);
}

.feature-card:hover {
    transform: translateY(-10px) rotateX(5deg) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    background: rgba(32, 44, 51, 0.8);
}

.feature-icon {
    font-size: 3rem;
    color: var(--whatsapp-green);
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Login Page */
#login-page {
    flex: 1;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(180deg, var(--whatsapp-green) 0%, var(--whatsapp-green) 120px, var(--bg-color) 120px, var(--bg-color) 100%);
    position: relative;
}

.back-btn {
    position: absolute;
    top: 30px;
    left: 30px;
    background: rgba(0,0,0,0.2);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s;
}

.back-btn:hover {
    background: rgba(0,0,0,0.4);
}

.login-card {
    background: var(--sidebar-bg);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 17px 50px 0 rgba(0, 0, 0, .19), 0 12px 15px 0 rgba(0, 0, 0, .24);
    width: 380px;
    text-align: center;
}

.login-card h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.login-card input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    background: var(--header-bg);
    border: 1px solid #313d45;
    border-radius: 6px;
    color: var(--text-primary);
    outline: none;
}

.login-card button {
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    background: var(--whatsapp-green);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.login-card button:hover {
    background: #008f71;
}

/* Chat Layout */
#chat-page {
    display: none;
    flex: 1;
    flex-direction: row;
    height: 100%;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.sidebar {
    width: 30%;
    min-width: 350px;
    background: var(--sidebar-bg);
    border-right: 1px solid rgba(134, 150, 160, 0.15);
    display: flex;
    flex-direction: column;
}

.main-chat {
    flex: 1;
    background: #0b141a;
    background-image: url('https://user-images.githubusercontent.com/15075759/28719144-86dc0f70-73b1-11e7-911d-60d70fcded21.png');
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    height: 60px;
    background: var(--header-bg);
    display: flex;
    align-items: center;
    padding: 0 16px;
    justify-content: space-between;
}

.user-profile {
    display: flex;
    align-items: center;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #6a7175;
    margin-right: 12px;
    object-fit: cover;
}

/* Chat List */
.chat-list {
    flex: 1;
    overflow-y: auto;
}

.chat-item {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s;
}

.chat-item:hover {
    background: var(--header-bg);
}

.chat-item.active {
    background: var(--active-chat);
}

.chat-info {
    flex: 1;
    border-bottom: 1px solid rgba(134, 150, 160, 0.15);
    padding-bottom: 10px;
}

.chat-header {
    display: flex;
    justify-content: space-between;
}

.chat-name {
    font-weight: 500;
}

.unread-badge {
    background-color: var(--whatsapp-green);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-left: 8px;
    animation: badge-in 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes badge-in {
    from { transform: scale(0); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.last-msg {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Message Area */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px 40px;
    display: flex;
    flex-direction: column;
}

.message {
    max-width: 60%;
    padding: 8px 12px;
    border-radius: 8px;
    margin-bottom: 4px;
    position: relative;
    font-size: 0.95em;
    word-wrap: break-word;
}

.message.incoming {
    align-self: flex-start;
    background: var(--msg-incoming);
}

.message.outgoing {
    align-self: flex-end;
    background: var(--msg-outgoing);
}

.msg-content {
    white-space: pre-wrap;
    word-break: break-word;
    font-family: inherit;
    line-height: 1.5;
}

/* Code Highlights in Messages */
.msg-content code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
}

.msg-content .code-block {
    background: #011627;
    padding: 12px;
    border-radius: 8px;
    margin: 8px 0;
    display: block;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #d6deeb;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85em;
    overflow-x: auto;
}

/* Copy Button */
.copy-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(32, 44, 51, 0.8);
    border: none;
    color: #8696a0;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
    z-index: 10;
}

.message:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    color: var(--whatsapp-green);
    background: rgba(32, 44, 51, 1);
}

.copy-btn.copied {
    color: var(--whatsapp-green);
}

.avatar-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #2a3942;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #8696a0;
    font-size: 1.2rem;
}

.avatar-small {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-container {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.msg-sender {
    font-size: 0.8em;
    font-weight: bold;
    color: var(--whatsapp-green);
    margin-bottom: 4px;
}

/* Input Area */
.input-area {
    background: var(--header-bg);
    padding: 10px 16px;
    display: flex;
    align-items: flex-end; /* Align buttons to bottom of textarea */
}

.input-area textarea {
    flex: 1;
    background: #2a3942;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    color: var(--text-primary);
    margin: 0 10px;
    outline: none;
    resize: none;
    height: 40px;
    min-height: 40px;
    max-height: 200px;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.4;
    overflow-y: auto;
}

.send-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 5px;
}

.send-btn:hover {
    color: var(--text-primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.modal-content {
    background: var(--sidebar-bg);
    padding: 30px;
    border-radius: 10px;
    width: 400px;
}

/* Coding Community Styles */
.community-mobile-header, .close-sidebar-btn, .comm-toggle-btn {
    display: none;
}

#community-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    background: var(--bg-color);
    z-index: 1000;
}

.community-sidebar {
    width: 320px;
    background: var(--sidebar-bg);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
}

.community-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 20px;
    align-items: center;
}

.community-nav {
    padding: 10px;
}

.comm-nav-item {
    width: 100%;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 12px 15px;
    text-align: left;
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s;
}

.comm-nav-item.active, .comm-nav-item:hover {
    background: var(--header-bg);
    color: var(--whatsapp-green);
}

.who-to-follow {
    padding: 20px;
}

.user-list-mini {
    margin-top: 15px;
    max-height: 300px;
    overflow-y: auto;
    padding-right: 5px;
}

.who-to-follow h4 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.suggested-user {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.community-feed-container {
    width: 100%;
    max-width: 700px;
}

/* Composer Links */
.composer-links .input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(134, 150, 160, 0.05);
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid rgba(134, 150, 160, 0.1);
}

.composer-links input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-primary);
    outline: none;
    font-size: 0.95rem;
}

.composer-links i {
    color: var(--text-secondary);
    width: 20px;
    text-align: center;
}

.post-composer {
    background: var(--sidebar-bg);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.composer-header {
    display: flex;
    gap: 15px;
}

.composer-header textarea {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    resize: none;
    outline: none;
}

.code-textarea {
    width: 100%;
    background: #011627;
    color: #d6deeb;
    font-family: 'Courier New', Courier, monospace;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #1d3b53;
    margin-top: 10px;
    min-height: 150px;
}

.composer-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
}

.action-btn-text {
    background: none;
    border: none;
    color: var(--whatsapp-green);
    cursor: pointer;
    font-weight: 600;
}

.btn-primary-small {
    background: var(--whatsapp-green);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
}

.post-card {
    background: var(--sidebar-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.post-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.post-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.post-content {
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 12px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.post-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 15px;
}

.post-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(134, 150, 160, 0.1);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(134, 150, 160, 0.1);
    transition: all 0.2s;
}

.post-link-btn:hover {
    background: rgba(134, 150, 160, 0.2);
    border-color: var(--whatsapp-green);
    transform: translateY(-2px);
}

.post-link-btn i {
    font-size: 1.1rem;
}

.code-block {
    background: #011627;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    overflow-x: auto;
    position: relative;
    border: 1px solid #1d3b53;
}

.code-block pre {
    color: #d6deeb;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}

.post-actions {
    display: flex;
    gap: 20px;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
}

.action-btn:hover, .action-btn.active {
    color: var(--whatsapp-green);
}

.back-btn-small {
    background: var(--header-bg);
    border: none;
    color: var(--whatsapp-green);
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Landing Buttons */
.landing-btns {
    display: flex;
    gap: 15px;
}

.community-btn-alt {
    background: transparent !important;
    border: 2px solid var(--whatsapp-green) !important;
    color: var(--whatsapp-green) !important;
    box-shadow: none !important;
}

.community-btn-alt:hover {
    background: rgba(0, 168, 132, 0.1) !important;
    color: white !important;
}

.btn-follow {
    background: var(--whatsapp-green);
    color: white;
    border: none;
    padding: 5px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    cursor: pointer;
}

.btn-follow.following {
    background: rgba(134, 150, 160, 0.2);
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-follow.following:hover {
    background: rgba(255, 92, 92, 0.2);
    color: #ff5c5c;
}

/* Responsive Design */
@media (max-width: 900px) {
    .nav-logo { font-size: 1.2rem; }
    .nav-login-btn { padding: 6px 16px; font-size: 0.9rem; }
    
    .landing-content {
        flex-direction: column-reverse;
        text-align: center;
        margin-top: 100px;
        gap: 20px;
    }

    .landing-title {
        font-size: 2.8em;
    }

    .landing-subtitle {
        max-width: 100%;
        margin: 0 auto 30px auto;
        font-size: 1.1em;
    }

    .landing-btns {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .landing-btn {
        width: 100%;
        justify-content: center;
    }

    #lottie-container {
        width: 100%;
        max-width: 350px;
        height: auto;
    }
}

@media (max-width: 768px) {
    /* Community Mobile Styles */
    .community-mobile-header {
        display: flex;
        width: 100%;
        height: 60px;
        background: var(--header-bg);
        align-items: center;
        justify-content: space-between;
        padding: 0 15px;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 1002;
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .sidebar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px;
        background: var(--header-bg);
    }

    .sidebar-header #community-back-btn {
        display: none;
    }

    .community-sidebar {
        position: fixed;
        top: 0;
        left: -320px; /* Hidden by default */
        height: 100%;
        z-index: 2000;
        transition: left 0.3s ease;
        box-shadow: 10px 0 30px rgba(0,0,0,0.5);
    }

    .community-sidebar.active {
        left: 0;
    }

    .community-main {
        padding: 80px 15px 20px 15px;
    }

    .community-feed-container {
        max-width: 100%;
    }

    .comm-toggle-btn {
        background: none;
        border: none;
        color: var(--whatsapp-green);
        font-size: 1.5rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .close-sidebar-btn {
        background: none;
        border: none;
        color: var(--text-secondary);
        font-size: 1.5rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .composer-header textarea {
        font-size: 1rem;
    }

    /* Original Chat Sidebar/Main */
    .sidebar {
        width: 100%;
        min-width: 100%;
        border-right: none;
        display: flex;
    }

    .main-chat {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 10;
    }
    /* ... existing chat logic ... */
}

@media (max-width: 480px) {
    header {
        padding: 0 10px;
    }

    .chat-info {
        padding-bottom: 5px;
    }
}
/* Front Page Mobile Refinements */
@media (max-width: 480px) {
    .landing-title { 
        font-size: 1.8em !important; 
        margin-bottom: 15px !important;
    }
    .landing-subtitle { 
        font-size: 1rem !important; 
        margin-bottom: 30px !important;
    }
    
    .hero-actions {
        margin-bottom: 40px !important;
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .landing-btn {
        width: 100% !important;
        justify-content: center;
    }

    .marquee-section {
        padding: 25px 0 !important;
        margin: 40px 0 !important;
        transform: rotate(-1deg) scale(1.1) !important;
    }

    .marquee-content span {
        font-size: 1.1rem !important;
    }
}

/* Stylish Footer Branding */
.landing-footer {
    width: 100%;
    padding: 60px 20px;
    text-align: center;
    position: relative;
    z-index: 2;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--heading-font);
    font-size: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 40px;
}

.landing-footer p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

.landing-footer .signature {
    color: var(--whatsapp-green);
    font-weight: 700;
    text-transform: uppercase;
    background: linear-gradient(90deg, #00a884, #00d2ad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    padding-bottom: 2px;
}

.landing-footer .signature::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--whatsapp-green);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.landing-footer:hover .signature::after {
    transform: scaleX(1);
}

.landing-footer:hover p {
    opacity: 1;
    transition: opacity 0.3s;
}

/* Ensure footer works on mobile */
@media (max-width: 480px) {
    .landing-footer {
        padding: 40px 20px;
        font-size: 0.85rem;
    }
}

/* Mobile Chat Navigation Fix */
@media (max-width: 768px) {
    .mobile-chat-active .sidebar {
        display: none !important;
    }

    .mobile-chat-active .main-chat {
        display: flex !important;
    }
}

/* Chat Back Button Styling for Mobile */
.chat-mobile-back {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-right: 15px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .chat-mobile-back {
        display: flex !important;
    }
}

/* Refined Back Button UI */
.chat-mobile-back {
    display: none;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: var(--text-secondary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    margin-right: 12px;
}

.chat-mobile-back:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    color: var(--whatsapp-green);
    transform: translateX(-2px);
}

.chat-mobile-back:active {
    scale: 0.95;
    background: var(--whatsapp-green) !important;
    color: white;
}

@media (max-width: 768px) {
    .chat-mobile-back {
        display: flex !important;
    }
}