:root {
    --primary-color: #007bff;
    --secondary-color: #28a745;
    --dark-bg: #2c3e50;
    --light-bg: #ffffff;
    --danger-color: #dc3545;
    --pending-color: #ffc107;
    --completed-color: #28a745;
    --shadow-deep: 0 10px 25px rgba(0, 0, 0, 0.2);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

/* --- HEADER STYLES --- */
header {
    background-color: var(--dark-bg);
    color: white;
    padding: 10px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.5em;
    margin: 0;
    text-align: left;
}

/* Right side of header (Wallet + Icon) */
.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

#currentBalanceDisplay {
    background-color: var(--secondary-color);
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 1.1em;
    display: none; /* Hidden until logged in */
}

#profileIconButton {
    background: none;
    border: 2px solid white;
    color: white;
    font-size: 24px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1;
    transition: background-color 0.3s;
}
#profileIconButton:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* --- MAIN CONTAINER --- */
.container {
    width: 90%;
    max-width: 800px;
    margin: 40px auto;
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* === ARTICLE/GUIDE STYLING === */
.guide-article {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f9f9f9;
    border-left: 5px solid var(--primary-color);
    border-radius: 5px;
}
.guide-article h3 {
    color: var(--primary-color);
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
}
.guide-article strong {
    color: var(--danger-color);
}
.guide-article ol {
    margin-left: 0;
    padding-left: 20px;
}
.guide-article .call-to-action {
    text-align: center;
    margin-top: 20px;
    padding: 10px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 5px;
    font-weight: bold;
}
/* === END ARTICLE/GUIDE STYLING === */


/* --- FORM STYLING --- */
.form-group label {
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.form-group-flex {
    display: flex;
    gap: 20px;
}

.form-group-flex > div {
    flex: 1;
}

#coinsRequiredDisplay {
    font-weight: bold;
    color: var(--danger-color);
    margin-top: 10px;
    display: block;
    font-size: 1.2em;
    text-align: right;
    padding: 10px;
    border: 1px solid #eee;
    border-radius: 5px;
}

#submitTaskButton {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-size: 1.1em;
    margin-top: 20px;
    transition: background-color 0.3s;
}
#submitTaskButton:hover {
    background-color: #0056b3;
}
#submitTaskButton:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/* --- HISTORY STYLING --- */
.history-section {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.history-table th, .history-table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
    font-size: 0.9em;
}
.history-table th {
    background-color: #f4f4f4;
}

.status-pending { color: var(--pending-color); font-weight: bold; }
.status-completed, .status-approved { color: var(--completed-color); font-weight: bold; }
.status-rejected { color: var(--danger-color); font-weight: bold; }

/* --- AUTH MODAL STYLING --- */
.modal {
    display: none; 
    position: fixed;
    z-index: 100; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 12px;
    width: 90%; 
    max-width: 400px;
    box-shadow: var(--shadow-deep);
    position: relative;
}

.close-btn {
    color: #aaa;
    position: absolute;
    top: 15px;
    right: 25px;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
}

#authTitle {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 25px;
    font-size: 1.8em;
}

.auth-form input {
    border: 1px solid #ddd;
    border-radius: 6px;
    margin-bottom: 15px;
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
}

.auth-form button {
    background-color: var(--primary-color);
    color: white;
    padding: 10px;
    border: none;
    border-radius: 4px;
    width: 100%;
    cursor: pointer;
}

.auth-toggle {
    margin-top: 20px;
    text-align: center;
}

.auth-toggle a {
    font-weight: bold;
    color: var(--primary-color);
    cursor: pointer;
}