:root {
    --bg-body: #0f172a;
    --bg-navbar: #1e293b;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --bg-input: #0f172a;
    --border-color: #334155;
    --accent-blue: #3b82f6;
    --accent-blue-hover: #1d4ed8;
    --accent-gold: #f59e0b;
    --accent-cyan: #06b6d4;
    --accent-green: #10b981;
    --accent-rose: #f43f5e;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

input, select, textarea {
    background-color: var(--bg-input) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-main) !important;
    padding: 10px 14px !important;
    border-radius: 8px !important;
    font-size: 0.9rem !important;
    outline: none !important;
    width: 100%;
    transition: all 0.2s ease !important;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--accent-cyan) !important;
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2) !important;
}

/* Navbar */
.navbar {
    background-color: var(--bg-navbar);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand {
    font-family: 'Fira Code', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}
.badge-java {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

.nav-links { display: flex; gap: 8px; }
.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.2s;
}
.nav-btn:hover { background-color: var(--bg-card-hover); color: var(--text-main); }
.nav-btn.active { background-color: var(--accent-blue); color: #fff; }

/* Container */
.container { padding: 32px; max-width: 1400px; margin: 0 auto; width: 100%; flex: 1; }

/* Dashboard Cards */
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-bottom: 32px; }
.card-stat {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}
.stat-val { font-size: 1.8rem; font-weight: 800; margin-top: 6px; }
.stat-label { color: var(--text-muted); font-size: 0.85rem; font-weight: 500; }
.stat-icon { width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; }

/* Main Section Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}
.card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }

/* Forms Grid */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); }

/* Table */
.table-responsive { overflow-x: auto; border-radius: 8px; border: 1px solid var(--border-color); }
table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.88rem; }
th { background-color: #0f172a; color: var(--text-muted); font-weight: 600; padding: 12px 16px; border-bottom: 1px solid var(--border-color); text-transform: uppercase; font-size: 0.75rem; }
td { padding: 14px 16px; border-bottom: 1px solid var(--border-color); vertical-align: middle; }
tr:hover { background-color: var(--bg-card-hover); }

/* Badges & Buttons */
.badge { padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; display: inline-block; }
.bg-aceptado { background-color: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid #10b981; }
.bg-rechazado { background-color: rgba(244, 63, 94, 0.15); color: #fb7185; border: 1px solid #f43f5e; }
.bg-pendiente { background-color: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid #f59e0b; }

.btn {
    padding: 10px 20px; border-radius: 8px; border: none; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; font-size: 0.88rem; text-decoration: none; transition: all 0.2s;
}
.btn-primary { background-color: var(--accent-blue); color: #fff; }
.btn-primary:hover { background-color: var(--accent-blue-hover); }
.btn-success { background-color: var(--accent-green); color: #fff; }
.btn-success:hover { background-color: #059669; }
.btn-danger { background-color: var(--accent-rose); color: #fff; }
.btn-secondary { background-color: #475569; color: #fff; }
.btn-secondary:hover { background-color: #334155; }
.btn-sm { padding: 6px 12px; font-size: 0.78rem; border-radius: 6px; }

.btn-icon { background: rgba(255,255,255,0.05); color: var(--text-main); border: 1px solid var(--border-color); padding: 6px 10px; border-radius: 6px; text-decoration: none; font-size: 0.8rem; display: inline-flex; align-items: center; gap: 4px; cursor: pointer; }
.btn-icon:hover { background: var(--accent-cyan); color: #fff; border-color: var(--accent-cyan); }