:root {
    --primary-color: #6366f1;
    --secondary-color: #a855f7;
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --font-family: 'Outfit', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-gradient);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 800px;
}

.hidden {
    display: none !important;
}

/* Glassmorphism Components */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.glass-header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 10px 20px;
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Typography */
h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    text-align: center;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 10px;
}

p {
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 30px;
}

/* Login Section */
.center-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
}

/* User Info */
.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

#user-pic {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
}

#user-name {
    font-weight: 600;
}

/* Buttons & Inputs */
.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-color);
}

.date-picker,
.select-input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    padding: 10px;
    border-radius: 8px;
    font-family: var(--font-family);
    margin-bottom: 20px;
    width: 100%;
    cursor: pointer;
}

/* Custom Calendar Icon Color */
.date-picker::-webkit-calendar-picker-indicator {
    filter: invert(1);
    /* Makes the calendar icon white */
    cursor: pointer;
}

.date-picker {
    background-color: rgba(30, 41, 59, 0.8);
    /* Dark Slate */
}

.select-input {
    width: auto;
    display: inline-block;
    cursor: pointer;
    background-color: rgba(30, 41, 59, 0.8);
    /* Darker Slate */
}

.select-input option {
    background-color: #1e1b4b;
    /* Dark Navy to match theme */
    color: #f8fafc;
    /* White text */
    padding: 10px;
}

/* Activity Grid */
.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.activity-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: background 0.2s;
}

.activity-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.activity-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.activity-item label {
    cursor: pointer;
    flex: 1;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-icon {
    background: rgba(255, 255, 255, 0.2);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    cursor: help;
    position: relative;
    color: var(--text-muted);
}

.info-icon:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    z-index: 10;
    pointer-events: none;
    border: 1px solid var(--glass-border);
}

/* Controls */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.nav-controls {
    display: flex;
    gap: 5px;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-color);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.chart-container {
    position: relative;
    height: 40vh;
    width: 100%;
}