:root {
    /* Color Palette - Cream & Dark Brown */
    --bg-color: #F5E9D8;
    --surface-color: #EDE1D1;
    --surface-light: #E5D9C9;
    --primary-color: #3E2C23;
    --primary-hover: #5A4438;
    --accent-brown: #8D6E63;
    --text-main: #3E2C23;
    --text-dim: #6D5C54;
    --border-color: rgba(62, 44, 35, 0.15);
    
    /* Points/Positions - Adjusted for light theme */
    --gold: #D4AF37;
    --silver: #9E9E9E;
    --bronze: #A1887F;
    --participation: #7986CB;
    
    /* Effects */
    --shadow-sm: 0 4px 6px -1px rgba(62, 44, 35, 0.1);
    --shadow-md: 0 10px 25px -5px rgba(62, 44, 35, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
}

.app-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header & Navigation */
header {
    text-align: center;
    margin-bottom: 3rem;
}

.brand h1 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.brand h1 span {
    color: var(--accent-brown);
}

.top-navbar {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    background: var(--surface-color);
    padding: 0.4rem;
    border-radius: 1rem;
    margin: 2rem auto;
    max-width: fit-content;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 1.4rem;
    color: var(--text-dim);
    text-decoration: none;
    font-weight: 700;
    border-radius: 0.7rem;
    cursor: pointer;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color);
    background: rgba(62, 44, 35, 0.05);
}

.nav-link.active {
    background: var(--primary-color);
    color: #F5E9D8;
}

.nav-link .badge {
    background: rgba(245, 233, 216, 0.2);
    padding: 0.1rem 0.5rem;
    border-radius: 1rem;
    font-size: 0.7rem;
}

/* Dashboard Section */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.main-points-card {
    background: var(--primary-color);
    padding: 2.5rem;
    border-radius: 1.5rem;
    color: #F5E9D8;
    text-align: center;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.main-points-card .label {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.main-points-card .points {
    font-size: 4.5rem;
    font-weight: 900;
}

.overview-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.mini-stat {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: 1.2rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.mini-stat:hover { background: var(--surface-light); border-color: var(--primary-color); }
.mini-stat i { font-size: 1.4rem; color: var(--accent-brown); margin-bottom: 0.4rem; }
.mini-stat .val { display: block; font-size: 1.8rem; font-weight: 800; color: var(--primary-color); }
.mini-stat .lbl { font-size: 0.75rem; color: var(--text-dim); text-transform: uppercase; font-weight: 700; }

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.chart-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid var(--border-color);
}

.chart-card h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.progress-row { margin-bottom: 1.2rem; }
.progress-info { display: flex; justify-content: space-between; font-weight: 700; margin-bottom: 0.4rem; font-size: 0.85rem; color: var(--text-dim); }
.progress-track { height: 8px; background: rgba(62, 44, 35, 0.08); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary-color); width: 0%; transition: width 1s ease; }

/* Grid & Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.achievement-card {
    background: var(--surface-color);
    padding: 1.8rem;
    border-radius: 1.2rem;
    border: 1px solid var(--border-color);
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.achievement-card:hover { transform: translateY(-3px); border-color: var(--primary-color); box-shadow: var(--shadow-md); }

.card-tag {
    background: rgba(62, 44, 35, 0.1);
    color: var(--primary-color);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 0.2rem 0.8rem;
    border-radius: 2rem;
    text-transform: uppercase;
}

.card-points {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary-color);
    position: absolute;
    top: 1.8rem;
    right: 1.8rem;
}

.card-body h3 { margin: 1.2rem 0 0.8rem 0; font-size: 1.2rem; font-weight: 800; }
.card-meta { color: var(--text-dim); font-size: 0.85rem; }
.card-meta div { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.3rem; }
.card-meta i { color: var(--accent-brown); width: 14px; }

.card-actions {
    margin-top: 1.2rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.icon-btn:hover { color: var(--primary-color); transform: scale(1.1); }

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    color: #F5E9D8;
    border: none;
    padding: 0.9rem 1.8rem;
    border-radius: 0.8rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
}

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

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(62, 44, 35, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal {
    background: var(--bg-color);
    border: 1px solid var(--primary-color);
    border-radius: 1.5rem;
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.form-group { margin-bottom: 1.2rem; }
label { display: block; margin-bottom: 0.4rem; font-size: 0.85rem; font-weight: 700; color: var(--text-dim); }
input, select {
    width: 100%;
    padding: 0.8rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.6rem;
    color: var(--text-main);
    font-family: inherit;
}

input:focus, select:focus { outline: none; border-color: var(--primary-color); }

/* Footer Actions */
.footer-btn-container {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

/* Utils */
.hidden { display: none !important; }

/* Positions */
.pos-1st { border-left: 5px solid var(--gold); }
.pos-2nd { border-left: 5px solid var(--silver); }
.pos-3rd { border-left: 5px solid var(--bronze); }

/* Responsive Adjustments */
@media (max-width: 900px) {
    .hero-stats { grid-template-columns: 1fr; }
    .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
    .app-wrapper { padding: 1rem 0.5rem; }
    .brand h1 { font-size: 2rem; }
    
    .top-navbar {
        width: 100%;
        border-radius: 0.8rem;
        gap: 0.2rem;
        padding: 0.3rem;
    }
    
    .nav-link {
        padding: 0.6rem 0.8rem;
        font-size: 0.85rem;
        flex-direction: column;
        gap: 0.3rem;
    }

    .nav-link i { font-size: 1.1rem; }
    .nav-link span:not(.badge) { font-size: 0.7rem; }

    .main-points-card .points { font-size: 3.5rem; }
    
    .modal {
        padding: 1.5rem;
        margin: 0.5rem;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 400px) {
    .nav-link { padding: 0.5rem; }
    .nav-link span:not(.badge) { display: none; } /* Icon only on very small screens */
    .brand h1 { font-size: 1.8rem; }
}

@media (max-width: 600px) {
    .charts-grid { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr; }
}