:root {
    --primary-bg: #0d1117;
    --secondary-bg: #161b22;
    --accent: #58a6ff;
    --accent-hover: #3182ce;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --danger: #f85149;
    --success: #238636;
    --glass-bg: rgba(22, 27, 34, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Auth Pages */
.auth-body-split {
    display: flex;
    min-height: 100vh;
    background: #ffffff;
}

.auth-left {
    flex: 1;
    background: linear-gradient(135deg, #101623, #161b22, #0d1117);
    color: #fff;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

@media (max-width: 900px) {
    .auth-left {
        display: none;
    }
}

.auth-left-content {
    max-width: 500px;
    position: relative;
    z-index: 2;
    width: 100%;
}

.auth-right {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #ffffff;
    padding: 20px;
}

.auth-container {
    width: 100%;
}

.light-theme {
    --primary-bg: #ffffff;
    --secondary-bg: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
}

.light-card .input-group input {
    background: #ffffff;
    border: 1px solid #d1d5db;
    color: #111827;
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.light-card .input-group input:focus {
    border-color: #0d1117;
    box-shadow: 0 0 0 2px rgba(13, 17, 23, 0.2);
}

.light-card .google-btn {
    border: 1px solid #d1d5db;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.light-card .google-btn:hover {
    background: #f9fafb !important;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
}

.logo-text .highlight {
    color: var(--accent);
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 0.9rem;
}

.auth-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 10px;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 40px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: color 0.2s;
}

.toggle-password:hover {
    color: var(--text-primary);
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.form-options {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.forgot-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.85rem;
}

.primary-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

.divider {
    text-align: center;
    margin: 25px 0;
    position: relative;
}

.divider::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
    z-index: 1;
}

.divider span {
    background: var(--secondary-bg);
    padding: 0 10px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    position: relative;
    z-index: 2;
}

.google-btn {
    width: 100%;
    padding: 12px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.google-btn:hover {
    background: #21262d;
}

.google-icon {
    width: 20px;
    height: 20px;
}

.text-btn {
    width: 100%;
    padding: 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    margin-top: 10px;
}

.message-box {
    margin-top: 20px;
    text-align: center;
    font-size: 0.9rem;
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 260px;
    background: var(--secondary-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.nav-item {
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.nav-item:hover, .nav-item.active {
    background: rgba(88, 166, 255, 0.1);
    color: var(--accent);
    border-right: 3px solid var(--accent);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-navbar {
    height: 64px;
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    position: relative;
}

.profile-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    min-width: 150px;
    z-index: 100;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
}

.content-area {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    background: var(--primary-bg);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.chart-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.chart-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.chart-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* Upload Section */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-zone:hover {
    border-color: var(--accent);
    background: rgba(88, 166, 255, 0.05);
}

/* AI Query Box */
.query-container {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-top: 24px;
}

.query-input-wrapper {
    display: flex;
    gap: 12px;
}

.query-input {
    flex: 1;
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
}

.query-input:focus {
    outline: none;
    border-color: var(--accent);
}

.btn-icon {
    padding: 0 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}