/* Light and Calm Color Scheme */
:root {
    /* Primary colors - soft blues and greens */
    --primary-light: #E3F2FD;
    --primary: #90CAF9;
    --primary-dark: #64B5F6;

    /* Success/Completion - soft green */
    --success-light: #E8F5E9;
    --success: #81C784;
    --success-dark: #66BB6A;

    /* Neutral colors - warm grays */
    --bg-main: #FAFAFA;
    --bg-card: #FFFFFF;
    --border: #E0E0E0;
    --text-primary: #424242;
    --text-secondary: #757575;

    /* Other month days - muted */
    --other-month: #BDBDBD;

    /* Spacing and borders */
    --border-radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    background-color: var(--bg-card);
    padding: 20px 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-badge {
    background-color: var(--primary-light);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
}

.logout-btn {
    background-color: var(--bg-main);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 8px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.logout-btn:hover {
    background-color: var(--border);
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 20px;
}

.flash-message {
    padding: 12px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    box-shadow: var(--shadow);
}

.flash-error {
    background-color: #FFEBEE;
    color: #C62828;
    border-left: 4px solid #C62828;
}

.flash-success {
    background-color: var(--success-light);
    color: #2E7D32;
    border-left: 4px solid #2E7D32;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.login-card {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.login-card h2 {
    margin-bottom: 30px;
    font-weight: 500;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.login-btn {
    width: 100%;
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: background-color 0.2s;
}

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

/* Calendar Container */
.calendar-container {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* Calendar Header */
.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.calendar-header h2 {
    font-size: 28px;
    font-weight: 500;
}

.nav-btn {
    background-color: var(--primary-light);
    color: var(--text-primary);
    padding: 10px 20px;
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: background-color 0.2s;
}

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

/* Statistics Panel */
.stats-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--primary-light);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Calendar Grid */
.calendar-grid {
    margin-bottom: 20px;
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
}

.calendar-table th {
    padding: 15px;
    text-align: center;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
    border-bottom: 2px solid var(--border);
}

.calendar-day {
    width: 14.28%;
    height: 100px;
    border: 1px solid var(--border);
    padding: 10px;
    vertical-align: top;
    background-color: var(--bg-card);
    position: relative;
    transition: background-color 0.2s;
}

.calendar-day.clickable {
    cursor: pointer;
}

.calendar-day.clickable:hover {
    background-color: var(--primary-light);
}

.calendar-day.other-month {
    background-color: var(--bg-main);
    color: var(--other-month);
}

.calendar-day.completed {
    background-color: var(--success-light);
}

.calendar-day.completed.clickable:hover {
    background-color: var(--success);
}

.calendar-day.today {
    border: 2px solid var(--primary);
    border-radius: 4px;
}

.day-number {
    font-size: 18px;
    font-weight: 500;
}

.checkmark {
    position: absolute;
    bottom: 10px;
    right: 10px;
    font-size: 28px;
    color: var(--success-dark);
}

/* Info Message */
.info-message {
    text-align: center;
    padding: 15px;
    background-color: var(--primary-light);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    margin-top: 20px;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .stats-panel {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .calendar-day {
        height: 80px;
        padding: 5px;
    }

    .day-number {
        font-size: 14px;
    }

    .checkmark {
        font-size: 20px;
    }
}