/* --- GLOBAL RESET AND FONTS --- */
:root {
    --primary-color: #48bb78;
    --secondary-color: #63b3ed;
    --text-dark: #e2e8f0;
    --text-muted: #a0aec0;
    --background-light: #1a202c;
    --card-bg: #2d3748;
    --header-bg: #171e2e;
    --border-color: #4a5568;
    --input-bg: #1a202c;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-light);
    line-height: 1.6;
    color: var(--text-dark);
}

/* --- HEADER & NAVIGATION --- */
header {
    background: var(--header-bg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo a {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links a, .btn-primary {
    padding: 0.5rem 1rem;
    margin-left: 10px;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s;
    color: var(--text-dark);
}

/* --- UTILITY CLASSES (Flash Messages) --- */
.flash {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
    font-weight: bold;
}
.flash.error {
    background-color: #742a2a;
    color: #feb2b2;
    border: 1px solid #9b2c2c;
}
.flash.success {
    background-color: #1c4532;
    color: #9ae6b4;
    border: 1px solid #276749;
}
.flash.warning {
    background-color: #5c3d11;
    color: #fbd38d;
    border: 1px solid #7b5314;
}
.flash.info {
    background-color: #1a365d;
    color: #90cdf4;
    border: 1px solid #2a4a7f;
}

/* --- MAIN LAYOUT & FORMS --- */
main {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.form-container, .task-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

label {
    display: block;
    margin-top: 1rem;
    font-weight: bold;
    color: var(--text-dark);
}

input[type="text"], input[type="password"], textarea, select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    background-color: var(--input-bg);
    color: var(--text-dark);
}

input[type="text"]:focus, input[type="password"]:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(72, 187, 120, 0.25);
}

select option {
    background-color: var(--card-bg);
    color: var(--text-dark);
}

textarea {
    resize: vertical;
    height: 100px;
}

.btn-primary, .btn-submit {
    background-color: var(--primary-color);
    color: #1a202c;
    border: none;
    cursor: pointer;
    padding: 12px 25px;
    margin-top: 15px;
    font-size: 1rem;
    border-radius: 6px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-primary:hover, .btn-submit:hover {
    background-color: #38a169;
}

.btn-primary:disabled, .btn-submit:disabled {
    background-color: #4a5568;
    color: var(--text-muted);
    cursor: not-allowed;
}

/* --- TASK CARD STYLING --- */

.task-card {
    display: flex;
    flex-direction: column;
    border-left: 4px solid var(--secondary-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.task-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.task-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 10px;
    gap: 8px;
}

.task-title {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.reward-badge {
    background-color: #2c4a3e;
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--primary-color);
}

.reward-badge span {
    margin-left: 8px;
    font-size: 0.95rem;
}

.reward-badge--large {
    font-size: 1.1rem;
    padding: 10px 18px;
}

.reward-badge--large span {
    font-size: 1.15rem;
    font-weight: bold;
}

/* Status Indicators */
.status-open {
    color: var(--primary-color);
    font-weight: bold;
}

.status-claimed {
    color: #f6ad55;
    font-weight: bold;
}

.status-completed {
    color: var(--text-muted);
    font-weight: bold;
}

.status-pending {
    color: #f6ad55;
    font-weight: bold;
}

/* Nav */
.nav-username {
    margin-left: 10px;
    color: var(--text-muted);
    font-weight: 500;
}

.btn-nav {
    background-color: var(--secondary-color);
    color: #1a202c !important;
    font-weight: bold;
}

/* Completed task cards */
.task-card--completed {
    opacity: 0.45;
}

.task-card--completed:hover {
    opacity: 0.7;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Table on task detail page */
table td {
    color: var(--text-dark);
    padding: 6px 0;
}

/* --- RESPONSIVENESS --- */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        padding-bottom: 10px;
    }
    .nav-links a, .btn-primary {
        margin: 5px 0;
        display: block;
        width: 100%;
        text-align: center;
    }
}