:root {
    --bg: #0f172a;
    --sidebar-bg: #1a1f3a;
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --border: #334155;
    --success: #10b981;
    --danger: #ef4444;
    --gold: #f59e0b;
}

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

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

body {
    display: flex;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, var(--bg) 0%, #1a1f3a 100%);
    color: var(--text-main);
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: 280px;
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, #162852 100%);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 32px 24px;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.3);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 48px;
    padding: 12px;
    border-radius: 12px;
    background: rgba(59, 130, 246, 0.1);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}

.logo-text .logo {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.logo-text .logo-subtitle {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 1px;
    margin-top: 2px;
}

.menu-items {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    padding-left: 16px;
}

.menu-item.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
    border-left-color: var(--accent);
    padding-left: 16px;
}

.menu-item i {
    width: 18px;
    text-align: center;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.user-profile:hover {
    background: rgba(59, 130, 246, 0.1);
}

.user-profile img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--accent);
}

.user-info {
    flex: 1;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.user-status {
    font-size: 11px;
    color: var(--success);
    font-weight: 500;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    padding: 32px 40px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.header-title h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-main) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-title p {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 400;
}

.upgrade-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.upgrade-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* ===== DASHBOARD GRID ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: linear-gradient(135deg, var(--card-bg) 0%, #1e3a5f 100%);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(59, 130, 246, 0.15);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--accent);
    flex-shrink: 0;
}

.card-icon.gold {
    background: rgba(245, 158, 11, 0.15);
    color: var(--gold);
}

.card-icon.crypto {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
}

.card-content {
    flex: 1;
}

.card-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.card-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.card-change {
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-change.positive {
    color: var(--success);
}

.card-change.negative {
    color: var(--danger);
}

/* ===== WELCOME SECTION ===== */
.welcome-section {
    margin-top: auto;
}

.welcome-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(59, 130, 246, 0.05) 100%);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 14px;
    padding: 28px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.welcome-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    flex-shrink: 0;
}

.welcome-content h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}

.welcome-content p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== FLOATING CHAT ===== */
.chat-icon {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
    z-index: 998;
    color: white;
    transition: all 0.3s ease;
}

.chat-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.45);
}

.chat-icon.active {
    transform: scale(0.95);
}

.notification-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: var(--danger);
    border: 3px solid var(--bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ===== CHAT CONTAINER ===== */
.chat-container {
    position: fixed;
    bottom: 100px;
    right: 32px;
    width: 400px;
    height: 600px;
    background: linear-gradient(135deg, var(--card-bg) 0%, #1e293b 100%);
    border: 1px solid var(--border);
    border-radius: 14px;
    display: flex;
    flex-direction: column;
    z-index: 999;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.8) translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.chat-container.active {
    transform: scale(1) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, var(--sidebar-bg) 0%, #1a3a52 100%);
    border-radius: 14px 14px 0 0;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--text-main);
    font-size: 15px;
}

.chat-title i {
    color: var(--accent);
}

.chat-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.chat-close:hover {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    padding: 12px 14px;
    border-radius: 10px;
    word-wrap: break-word;
    font-size: 13px;
    line-height: 1.5;
    max-width: 85%;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-message {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: white;
    border-radius: 10px 4px 10px 10px;
}

.ai-message {
    align-self: flex-start;
    background: var(--sidebar-bg);
    color: var(--text-main);
    border: 1px solid var(--border);
    border-radius: 4px 10px 10px 10px;
}

.ai-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border-color: var(--danger);
}

.ai-message.typing {
    display: flex;
    gap: 4px;
    padding: 16px 14px;
}

.ai-message.typing span {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: bounce 1.4s infinite;
}

.ai-message.typing span:nth-child(2) {
    animation-delay: 0.2s;
}

.ai-message.typing span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    0%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
}

.chat-input-area {
    display: flex;
    gap: 10px;
    padding: 16px;
    border-top: 1px solid var(--border);
    background: linear-gradient(180deg, transparent, rgba(59, 130, 246, 0.05));
}

.chat-input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text-main);
    font-size: 13px;
    outline: none;
    transition: all 0.2s ease;
}

.chat-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.chat-input::placeholder {
    color: var(--text-muted);
}

.chat-send-btn {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border: none;
    border-radius: 8px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 14px;
}

.chat-send-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.chat-send-btn:active {
    transform: translateY(0);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
        padding: 24px 16px;
    }

    .main-content {
        padding: 24px;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    body {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 16px;
    }

    .logo-container {
        margin-bottom: 0;
    }

    .menu-items {
        flex-direction: row;
        gap: 4px;
    }

    .menu-item span {
        display: none;
    }

    .sidebar-footer {
        border-top: none;
        margin-top: 0;
    }

    .main-content {
        flex: 1;
        padding: 20px;
    }

    .chat-container {
        width: calc(100% - 40px);
        height: 400px;
        bottom: 90px;
        right: 20px;
    }

    .chat-icon {
        bottom: 20px;
        right: 20px;
    }
}