:root {
    --bg-dark: #050510;
    --bg-panel: #0a0a1f;
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-green: #00ff9d;
    --text-main: #e0e0e0;
    --text-dim: #8888aa;
    --font-head: 'Orbitron', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-mono);
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Effects */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0) 50%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0.1));
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 1000;
}

/* Login Screen */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background: radial-gradient(circle at center, #1a1a3a 0%, #000 100%);
}

.login-box {
    background: rgba(10, 10, 31, 0.9);
    padding: 3rem;
    border: 1px solid var(--neon-blue);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
    text-align: center;
    width: 400px;
    position: relative;
}

.login-box::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--neon-blue), transparent, var(--neon-pink));
    z-index: -1;
    filter: blur(5px);
    opacity: 0.5;
}

.logo-area h1 {
    font-family: var(--font-head);
    font-size: 2.5rem;
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
    margin: 10px 0;
}

.subtitle {
    letter-spacing: 4px;
    font-size: 0.8rem;
    color: var(--neon-pink);
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.input-group label {
    display: block;
    color: var(--neon-green);
    font-size: 0.8rem;
    margin-bottom: 5px;
}

input {
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--text-dim);
    border-radius: 4px;
    padding: 10px;
    color: var(--neon-blue);
    font-family: var(--font-mono);
    outline: none;
    transition: 0.3s;
}

input:focus {
    border-color: var(--neon-blue);
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.3);
}

/* Components */
.cyber-btn {
    background: transparent;
    border: 1px solid var(--neon-blue);
    color: var(--neon-blue);
    padding: 10px 20px;
    font-family: var(--font-head);
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
    width: 100%;
}

.cyber-btn:hover {
    background: var(--neon-blue);
    color: #000;
    box-shadow: 0 0 15px var(--neon-blue);
}

.cyber-btn-small {
    background: transparent;
    border: 1px solid var(--text-dim);
    color: var(--text-main);
    padding: 5px 10px;
    cursor: pointer;
    transition: 0.3s;
}

.cyber-btn-small:hover {
    border-color: var(--neon-green);
    color: var(--neon-green);
}

/* Dashboard */
.dashboard-container {
    display: flex;
    height: 100%;
}

.sidebar {
    width: 250px;
    background: var(--bg-panel);
    border-right: 1px solid #222;
    display: flex;
    flex-direction: column;
}

.brand {
    padding: 20px;
    font-family: var(--font-head);
    font-size: 1.2rem;
    color: var(--neon-blue);
    border-bottom: 1px solid #222;
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-profile {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid #222;
}

.avatar {
    width: 40px;
    height: 40px;
    background: #222;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--neon-pink);
}

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

.status.online {
    color: var(--neon-green);
    font-size: 0.7rem;
}

.nav-links {
    list-style: none;
    margin-top: 20px;
}

.nav-btn {
    padding: 15px 20px;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-dim);
}

.nav-btn:hover,
.nav-btn.active {
    background: rgba(0, 243, 255, 0.1);
    color: var(--neon-blue);
    border-right: 3px solid var(--neon-blue);
}

.nav-footer {
    margin-top: auto;
    padding: 20px;
}

.logout-btn {
    width: 100%;
    background: transparent;
    border: 1px solid #442222;
    color: #ff4444;
    padding: 10px;
    cursor: pointer;
}

.logout-btn:hover {
    background: #442222;
    color: #fff;
}

.main-content {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    padding: 20px;
    overflow: hidden;
}

.tab-content {
    display: none;
    height: 100%;
}

.tab-content.active {
    display: block;
}

/* Chat */
.chat-interface {
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid #222;
    background: rgba(0, 0, 0, 0.5);
}

.chat-header {
    padding: 15px;
    border-bottom: 1px solid #222;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h2 {
    font-family: var(--font-head);
    font-size: 1rem;
    color: var(--text-main);
}

.connection-status {
    font-size: 0.7rem;
    color: var(--neon-green);
    display: flex;
    align-items: center;
    gap: 5px;
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--neon-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 255, 157, 0.4);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(0, 255, 157, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(0, 255, 157, 0);
    }
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 4px;
    font-size: 0.9rem;
}

.message.bot {
    align-self: flex-start;
    border-left: 2px solid var(--neon-blue);
    background: rgba(0, 243, 255, 0.05);
}

.message.user {
    align-self: flex-end;
    border-right: 2px solid var(--neon-pink);
    background: rgba(255, 0, 255, 0.05);
    text-align: right;
}

.message.system {
    align-self: center;
    color: var(--text-dim);
    font-style: italic;
    font-size: 0.8rem;
    border: 1px dashed #333;
}

.chat-input-area {
    padding: 15px;
    border-top: 1px solid #222;
    display: flex;
    gap: 10px;
}

#chat-input {
    flex: 1;
}

/* Cloud Storage */
.cloud-interface {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.cloud-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--neon-blue);
    padding-bottom: 10px;
}

.cloud-header h2 {
    color: var(--neon-blue);
}

.file-list {
    flex: 1;
    overflow-y: auto;
    border: 1px solid #222;
    background: rgba(0, 0, 0, 0.3);
}

.file-item {
    display: flex;
    padding: 15px;
    border-bottom: 1px solid #222;
    align-items: center;
    transition: 0.2s;
}

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

.col-name {
    flex: 2;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
}

.col-size {
    width: 100px;
    color: var(--text-dim);
}

.col-date {
    width: 150px;
    color: var(--text-dim);
}

.col-actions {
    width: 100px;
    display: flex;
    gap: 5px;
    justify-content: flex-end;
}

/* Utilities */
.hidden {
    display: none !important;
}

.error-msg {
    color: #ff3333;
    margin-top: 10px;
    font-size: 0.8rem;
    text-shadow: 0 0 5px #ff0000;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #050510;
}

::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neon-blue);
}